CN102120677B - Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method - Google Patents

Biological response system for multistage sewage treatment as well as manufacturing method and sewage treatment method Download PDF

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CN102120677B
CN102120677B CN201110028080A CN201110028080A CN102120677B CN 102120677 B CN102120677 B CN 102120677B CN 201110028080 A CN201110028080 A CN 201110028080A CN 201110028080 A CN201110028080 A CN 201110028080A CN 102120677 B CN102120677 B CN 102120677B
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pond
processing unit
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pool
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CN102120677A (en
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李金中
刘学功
李学菊
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TIANJIN WATER RESOURCES RESEARCH INSTITUTE
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TIANJIN WATER RESOURCES RESEARCH INSTITUTE
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Abstract

The invention discloses a biological response system for multistage sewage treatment as well as a manufacturing method and a sewage treatment method. The biological response system is formed by connecting a multistage precipitation pretreatment unit, a multistage hydrolysis and acidizing treatment unit, an aeration oxygenation treatment unit and a multistage undercurrent wetland treatment unit through pipelines; the multistage undercurrent wetland treatment unit comprises a water inlet wetland pool, two groups of decomposition and percolation wetland pools and a water outlet wetland pool which are sequentially arrayed; and the multistage precipitation pretreatment unit, the multistage hydrolysis and acidizing treatment unit and the aeration oxygenation treatment unit are sequentially arranged on one side of the multistage undercurrent wetland treatment unit in parallel and are connected with one another through pipelines. The biological response system provided by the invention has the advantages of scientific design, reasonable structure, fewer electromechanical devices due to the adoption of an automatic flow mode, low operation cost, low sewage treatment expense, small floor area, obvious sewage treatment effect, convenience for operation and maintenance management, low cost on project capital construction and operation, and capability of carrying out purification treatment all the year round, ; the treated sewage can be directly discharged into reservoirs, rivers and lakes and is in accordance with discharge standards in China; and a bioecological technology has stronger self-regulation capability and repair capability.

Description

Multistage WWT is with the making method and the sewage water treatment method of bio-reaction system
Technical field
The present invention relates to the treatment facility of a kind of waste water, sewage, relate in particular to making method and the sewage water treatment method of a kind of multistage WWT with bio-reaction system.
Background technology
The water pollution can cause the minimizing of species diversity of degeneration and river course, the water body in lake of the ecosystem; The many geographic surface water quality of China are poor at present, and are the trend of going from bad to worse, and the metropolitan stream pollution of flowing through is especially serious; In ecological degeneration, have a strong impact on the view in city.Usually the municipal sewage plant is to be process object with industry with city domestic sewage, and effluent quality is a secondary standard, and the river in the above-mentioned city of flowing through, the water quality of lake water are commonly five types or bad five types, do not suit to set up sewage work and carry out WWT.Since the 70's of 20th century, the artificial swamp water technology begins to receive people's attention, has advantages such as low investment, less energy-consumption, becomes water surrounding Study on Technology focus.
The technology that adopts in the world at present mainly contains three types: 1. chemical process: kill algae as adding chemical agent, add molysite promote phosphorus deposition, add lime denitrogenation etc., but be prone to cause secondary pollution; 2. physical method: dredge bed mud, diversion and dash and become silted up etc., but often cure the symptoms, not the disease; 3. ecology-biological method: be the very fast a kind of new technology of abroad in recent years development, water ecology-bioremediation technology is the original looks of going restore nature circle according to the nature self-law, strengthens the self-purification capacity of nature self and removes to administer contaminated water body.
The existing manual wetland comprises three key components: plant, mikrobe, matrix, the artificial filler of building different-grain diameter are the bed body that matrix forms bedding, the water-fast plant of bed surface plantation high-effective cleansing; Take root in matrix bed body; Matrix is being supported the root system of these plants, and matrix and root system of plant provide the carrier that adheres to for various mikrobes, forms microbial film in matrix and root system of plant surface; Water body has the latent layer porous filter bed of plant with undercurrent form infiltrate length; Soaking in the matrix bed body has expired water body, and through the physics in the current wetland, chemistry and biological action, the purification to water body is accomplished in optimum combination.But still have a lot of defectives and deficiency, and artificial swamp inside causes the aerobic microbiological effect of top layer aerobic zone to weaken under the lower situation of dissolved oxygen content, and the water quality of water outlet is relatively poor, and the water outlet dissolved oxygen concentration is lower, is unfavorable for the self-cleaning of receiving water body.It is main that matrix fill adopts the gravel filling bed mostly; The kind of matrix fill is more single with the composition texture ratio; The single formation osmosis system of the component of matrix fill is than homogeneous, and the operational process of water body is the simple horizontal motion, and upper and lower water body exchange is relatively poor; Cause the upper strata aerobic with lower floor be sick of district's water flow exchange a little less than, cause the purifying treatment effect to descend.Exchange and the prolongation flow path of portion water advection wetland for increasing the levels water body; The artificial stop log weir that is provided with in wetland treating pond bottom; Though increase the exchange intensity of levels water body and prolong flow path, form the slough easily, cause the decrease in efficiency of whole purifying treatment.
Summary of the invention
Main purpose of the present invention is to solve the problem that exists in the above-mentioned WWT, provides that a kind of preferential ecotype, environmental type, energy-saving technology, electromechanical equipment are few, multistage WWT with biological and ecological capacity of self-regulation and repair ability is with the making method and the sewage water treatment method of bio-reaction system.
Water treatment process method should be suited measures to local conditions according to different area features because treatment process is different, and floor space, treatment characteristic, required equipment quantity, processing cost, sludge output etc. also have nothing in common with each other, the selected sewage water treatment method that is fit to.
The factor that the present invention considers in the design WWT has: treating water gauge mould, water inlet and effluent quality, the changing conditions of water quality, the water yield; The floor space size, the complexity of maintenance management, economy comprise cost of erection and running cost; Influence to surrounding enviroment; The engineering practical situations, the handling property situation comprises stability, anti-shock loading performance, sludge output and the sludge stabilization degree etc. of treatment effect, processing.
The technical solution adopted for the present invention to solve the technical problems is:
Be connected to form through pipeline by multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit; The water inlet wetland pond of multistage current wetland processing unit, 2 component Xie Shenlvshidichi and go out the meadow bog pond and be arranged in order; One side of multistage current wetland processing unit sets gradually multi stage precipitation pretreatment unit, multistage acidication processing unit and aeration oxygen replenishing processing unit side by side; And be connected through pipeline, perhaps multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit are arranged in order and are provided with and are connected through pipeline.
Should under the prerequisite that guarantees water treatment effect, make full use of the condition of existing landform and landforms in the engineering design, suit measures to local conditions to design, reduce project occupation of land as far as possible, reduce the quantities of soil excavation.Should preferentially select the ecotype, environmental type, energy-saving technology for use according to the theory of recycling economy in the design process, reduce the consumption of Nonrenewable energy resources to greatest extent.According to different environment, zone and period, use each item technology, overall arrangement, scientific design obtains best water environment treatment effect, guarantees the safety of water delivery water quality.The design of engineering combines with surrounding enviroment view and ecological construction, under the prerequisite that satisfies the water surrounding improvement, beautifies surrounding environment.
All-work is according to the practical situation layout; Form by multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit; Layout totally is rectangle; Wherein multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit are arranged side by side in a side, and multistage current wetland processing unit is arranged in opposite side.Also can be in one line multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit, according to the WWT array of procedures.
Source of sewage comprises sewage and breeding wastewater; Source of sewage flows in the multi stage precipitation pretreatment unit after pipeline is collected certainly; The water outlet of multi stage precipitation pretreatment unit is again after flow in the multistage acidication processing unit, multistage acidication processing unit water outlet gets into the outlet sump that catchments, in water pump lifting gets into the aeration oxygen replenishing processing unit; Water outlet is from flowing into multistage current wetland processing unit behind aeration; After the reaction process of aerobic, anaerobism, nitrification and denitrification, be discharged into river course or lake, all open layout is adopted in design, is convenient to landscape construction.
The multi stage precipitation pretreatment unit is closed box; The casing inner route clapboard is separated at least 3 spaces, and its space respectively is deposition decomposing pool, fermentation settling tank and impoundment dedicated, and each top of space is provided with airtight slag removing hole; Install sealing cover on the slag removing hole, constitute airtight running space.
Be entrained with a certain amount of suspended substance, swimmer and silt and so in the source of sewage, directly get into the obstruction that multistage acidication processing unit and multistage current wetland processing unit can cause subsequent technique, influence the normal operation of total system.So; Before getting into multistage acidication processing unit and multistage current wetland processing unit; Should tackle suspended substance, swimmer and silt of carrying secretly in the source of sewage and so on; Be that suspended substance, swimmer and silt are implemented collection, harmless treatment, water yield adjusting and deposition function, a kind of pretreatment unit that in same flow process, carries out.The top of deposition decomposing pool, fermentation settling tank and impoundment dedicated is provided with slag removing hole, and slag removing hole loam cake top cover labyrinth keeps deposition decomposing pool, fermentation settling tank and impoundment dedicated to be in airtight environment.According to the water quality situation of source of sewage, the multi stage precipitation pretreatment unit can be separated according to design requirements and is arranged to a plurality of airtight spaces, implements the sewage pre-treatment.
The pool wall top of the deposition decomposing pool of multi stage precipitation pretreatment unit one side is provided with dirt inlet, and dirt inlet is introduced source of sewage through pipeline, on the pipeline of dirt inlet gate valve is set, the influx of control source of sewage, and source of sewage is sewage and breeding wastewater.Deposition decomposing pool and the fermentation dividing plate middle part between the settling tank is provided with at least 1 of the flow tube of inclination; The inlet of the flow tube of deposition decomposing pool is lower than the outlet of the flow tube of fermentation settling tank, and the sewage water body of the source of sewage in the deposition decomposing pool after precipitating, decomposing receives the water body action of gravity to flow into fermentation in the fermentation settling tank, precipitate from flow tube.
The deposition decomposing pool is mainly held back and is contained the more ight soil of worm's ovum, and loose excrement piece is because of fermentation, the buoyance lift that makes progress that expands, and heavy sinking forms the excrement skin, the liquid manure in middle level and the excrement slag of sinking that float, and parasite belongs to proportion the Nature and falls at the bottom of the pond.The deposition decomposing pool is the airtight pond of airtight anaerobic environment, the albumen organic matter through anaerobically fermenting then by and decompose, and produce material such as ammonia, have the effect of killing parasitic ovum and germ.
After deposition, decomposition, source of sewage realizes separating source of sewage in the deposition decomposing pool, and the sewage water body that is in the middle level is under the effect of water body gravity, and the flow tube that is installed in the dividing plate middle part through inclination gets into the settling tank that ferments.The multi stage precipitation pretreatment unit utilizes the state after the effect of gravity and source of sewage are separated of water body, and at the flow tube that dividing plate tilts and installs, water body flows through from flow tube, and suspended substance, swimmer and sediment intercept in the deposition decomposing pool.
Dividing plate middle part between fermentation settling tank and the impoundment dedicated is provided with the flow tube of inclination; The inlet of the flow tube of fermentation settling tank is lower than the outlet of the flow tube of impoundment dedicated, and the sewage water body in the settling tank that ferments receives the water body action of gravity to flow into separation in the impoundment dedicated, deposition from flow tube through fermentation, oettIed sewage liquid again.
The fermentation settling tank is further implemented fermentation, deposition, compares with the deposition decomposing pool, and the excrement skin of fermentation settling tank and the quantity of excrement slag and suspended substance and swimmer reduce accordingly; The degree of fermentation, decomposition is lower; Because do not have new source of sewage to get into, sewage liquid is in the comparison stationary state, the worm's ovum that helps swimming in the fermentation settling tank continues to sink; Further separate water body, suspended substance, swimmer in the sewage liquid, be transported to the clear liquid sewage water body of further separating in the impoundment dedicated.
The pool wall top of the impoundment dedicated of multi stage precipitation pretreatment unit opposite side sets out the mouth of a river; Be connected through the water-in of pipeline with the pool wall bottom of multistage acidication processing unit; Gate valve is set on the pipeline; The control output flow; Get into the interior sewage liquid water body of impoundment dedicated and import the water-in of multistage acidication processing unit again through the clear liquid water body of fermentation, post precipitation from the water outlet on pool wall top through the pipeline gravity flow; The flow of controlling the multistage acidication processing unit of gate valve control input is set on the pipeline, and the flow direction that gets into the source of sewage of multi stage precipitation pretreatment unit utilizes the deadweight of water body mobile to the water outlet following current of the multi stage precipitation pretreatment unit the other end through flow tube from the dirt inlet of multi stage precipitation pretreatment unit one end, in process of flowing, implements deposition, fermentation, decomposes, sterilizes and process clear liquid sewage water body.
The impoundment dedicated of multi stage precipitation pretreatment unit mainly works to store sewage liquid; Processing through deposition decomposing pool, fermentation settling tank; Be substantially free of parasitic ovum and pathogenic micro-organism in the impoundment dedicated, reached the innoxious requirement of source of sewage, processed clear liquid sewage water body.Source of sewage is through fermentation, deposition and the decomposition of deposition decomposing pool, fermentation settling tank and impoundment dedicated; Can play the effect of killing ova and bacterium preferably, the clear liquid sewage water body in the impoundment dedicated gets into multistage acidication processing unit from the water outlet that is installed in pool wall top through pipeline.
The water outlet of multi stage precipitation pretreatment unit is connected through pipeline with the water-in of multistage acidication processing unit; The water-in of the water outlet of multi stage precipitation pretreatment unit and multistage acidication processing unit is realized a drop, forms the water-in gravity flow of the water outlet of multi stage precipitation pretreatment unit to multistage acidication processing unit.
Multistage acidication processing unit is closed box; The pool wall bottom of multistage acidication processing unit one end is provided with water-in; The pool wall top of the multistage acidication processing unit the other end sets out the mouth of a river, on the pipeline of water outlet gate valve is set, the control output flow.The casing inner route clapboard of multistage acidication processing unit is separated at least 3 spaces; Its space is followed successively by into water hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; The top in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond is provided with airtight access hole respectively; Install sealing cover on the access hole, on the dividing plate in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, L shaped flow tube is set, the water-in of L shaped flow tube is higher than the top ends of hydrolysed filtrate layer; Collect the sewage water body of implementing hydrolysed filtrate through the hydrolysed filtrate layer; The water outlet of L shaped flow tube is in the bottom in another spatial hydrolysed filtrate layer, is transported to next hydrolysed filtrate layer to the sewage water body of hydrolysed filtrate, is communicated with water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond.
In water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, the hydrolysed filtrate layer is set; The top ends of hydrolysed filtrate layer is lower than the water-in of L shaped flow tube and the water outlet on the pool wall; Fill the acidication filtrate in the hydrolysed filtrate layer, the acidication filtrate adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain.
Multistage acidication processing unit is the anaerobic biological reactor that the hydrolysed filtrate layer is housed; The microbial population that has the growth of microbial film form at filter material surface; Retained the mikrobe of a large amount of suspension growths in the space between the filtrate; Clear liquid sewage water body is when the hydrolysed filtrate layer, and organism is trapped, absorption and metabolism are decomposed, and reaches stabilization at last.Simultaneously, water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond are configured to airtight anaerobic environment, and the albumen organic matter decomposes through anaerobically fermenting in anaerobic environment, and produce material such as ammonia, have the effect of killing parasitic ovum and germ.
Multistage acidication processing unit is installed water-in in the pool wall bottom; Directly send into the into hydrolysed filtrate layer enforcement hydrolysed filtrate in water hydrolysis oxidation pond to clear liquid sewage water body; Multistage acidication processing unit is installed water outlet on pool wall top, collects the sewage water body behind the hydrolysed filtrate and be transported in the outlet sump that catchments.The top in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond is provided with access hole, and access hole loam cake top cover labyrinth keeps water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond to be in airtight environment.
L shaped flow tube is installed on dividing plate top between water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and the water outlet hydrolysis oxidation pond; L shaped flow tube is collected the sewage water body through hydrolysed filtrate layer hydrolysed filtrate, and implements hydrolysed filtrate once more through the bottom that gravity flow is transported to the hydrolysed filtrate layer in another pond.
The flow direction that gets into the clear liquid water body of multistage acidication processing unit utilizes the deadweight of water body to flow to the water outlet following current of the multistage acidication processing unit the other end through L shaped flow tube from the water-in of multistage acidication processing unit one end, in process of flowing, implement hydrolysis, oxidation, fermentation and process harmless water body.
The organic concentration of sewage pbz polymer in source of sewage is more; Pollutent such as nitrogen, phosphorus is many to be present in the water body with organonitrogen and organophosphorus form; Like protein-based, urea, biomass cells body etc.; Be unfavorable for the quick degraded of follow-up multistage current wetland processing unit; Need be degraded to macromolecule organic that low molecule organic matter, organonitrogen are degraded to inorganic nitrogen, organic phosphorus degrading is an inorganic phosphorus etc. through anaerobic environment, improve the efficient that follow-up multistage current wetland processing unit is removed pollutent.Harmless water body through behind the hydrolysed filtrate of hydrolysed filtrate layer covers the hydrolysed filtrate layer, accumulates in the top in water outlet hydrolysis oxidation pond, flows into the outlet sump that catchments certainly from water outlet.
The outer outlet sump that catchments that is provided with of the pool wall of multistage acidication processing unit the other end; The outlet sump integral body of catchmenting is box-shaped; The outlet sump that catchments is connected with the pool wall of multistage acidication processing unit the other end; The water outlet of multistage acidication processing unit connects with the outlet sump that catchments, and the pool wall top of the opposite side of the outlet sump that catchments sets out the mouth of a river, and the outlet sump inner bottom part that catchments is installed submersible pump; Submersible pump passes water outlet through pipeline and promotes the clear liquid water body of hydrolysis oxidation, is transported in the aeration oxygen replenishing processing unit.
In multistage acidication processing unit,, the water outlet inflow accumulates in catchmenting outlet sump through the harmless water body behind the hydrolysed filtrate layer enforcement hydrolysed filtrate; The submersible pump that is installed in the outlet sump that catchments rises to enforcement aeration oxygen replenishing processing in the aeration oxygen replenishing processing unit to harmless water body through pipeline; Improve the water level of harmless water body; Realize that aeration oxygen replenishing processing unit and multistage subsurface flow wetland unit produce drop, the water body of aeration oxygen replenishing processing unit flows automatically in the multistage subsurface flow wetland unit.
Aeration oxygen replenishing processing unit integral body is box-shaped; On the pool wall of aeration oxygen replenishing processing unit one end water-in is set; Pipeline on the water-in is provided with gate valve, the flow of control water-in, and the clear liquid water body of the hydrolysis oxidation in the outlet sump that catchments gets in the aeration oxygen replenishing processing unit from water-in through pipeline.
The pool wall top of the aeration oxygen replenishing processing unit the other end is provided with aerator; The bottom, pond of aeration oxygen replenishing processing unit is provided with 1 aeration tube at least along the bottom, pond, and aeration tube is connected with main pipe, and aerator is connected with the main pipe end; The control gate valve is set on the main pipe; The air input of control aeration tube, aerator is through main pipe and aeration tube aeration in the pond of aeration oxygen replenishing processing unit, and the content that increases dissolved oxygen in the harmless water body is processed the dissolved oxygen water body.
The top of one side of aeration oxygen replenishing processing unit sets out the mouth of a river; Pipeline on the water outlet is provided with gate valve; The flow of control water outlet; Water distributor through the multistage current wetland processing unit of pipeline and wave is connected, and gravity flow is transported in the multistage current wetland processing unit of wave through the dissolved oxygen clear liquid water body after the oxygenation.
Dissolved oxygen content through the harmless water body behind the hydrolysed filtrate is extremely low, and the aeration oxygen replenishing processing unit is exactly the content that will increase the dissolved oxygen in the harmless water body.Aerator is through main pipe and the aeration tube harmless water body enforcement aeration in the pond mutually; The content that increases the dissolved oxygen of harmless water body is processed the dissolved oxygen water body; For the aerobic microbiological of follow-up multistage subsurface flow wetland unit provides oxygen source, the dissolved oxygen water body flows automatically to multistage subsurface flow wetland unit from the water outlet of aeration oxygen replenishing processing unit.
Multistage current wetland processing unit integral body is box-shaped; Be separated at least 4 group current wetland ponds through dividing plate; Be arranged in order to water inlet wetland pond, 2 component Xie Shenlvshidichi and go out the meadow bog pond, water inlet wetland pond and wherein a component separate between the infiltration wetland pond dividing plate be set, the top ends of dividing plate is higher than the upper epidermis that decomposes filter layer; The bottom of dividing plate is provided with at least 1 of horizontal flow tube, and the top of dividing plate is provided with at least 1 of back flushing connected entrance.Go out meadow bog pond and another component and separate between the infiltration wetland pond dividing plate is set, the top ends of dividing plate is higher than the upper epidermis that decomposes filter layer, and the bottom of dividing plate is provided with at least 1 of horizontal flow tube, and the top of dividing plate is provided with at least 1 of back flushing connected entrance.2 components are separated between the infiltration wetland pond dividing plate are set, and dividing plate is installed in and decomposes in the filter layer, and the top ends of dividing plate is lower than the decomposition filter layer, and the decomposition filter layer that 2 components are separated top, infiltration wetland pond is connected.The pool wall top of multistage current wetland processing unit one end is provided with the back flushing evacuation port, and back flushing water source and obturator that the back flushing evacuation port decomposes filter layer with back flushing are discharged outside the multistage current wetland processing unit together.
Multistage subsurface flow wetland unit is formed by filler matrix, waterplant with attached to the mikrobe in filler matrix and root system of plant district, constitutes unique " matrix-plant-microorganism " ecosystem.Be divided into into water wetland pond, 2 component Xie Shenlvshidichi in the multistage current wetland processing unit and go out the meadow bog pond; Through dividing plate and horizontal flow tube setting; Build in the decomposition filter layer of dissolved oxygen water body in multistage current wetland processing unit by the top layer to bottom; Being flowed repeatedly to the top layer by bottom forms awave mobilely again, implements the reaction process of aerobic, anaerobism, nitrification and denitrification.The top of dividing plate is provided with the back flushing connected entrance; The pool wall top of multistage current wetland processing unit one end is provided with the back flushing evacuation port; After filter layer is decomposed in back flushing, discharge multistage subsurface flow wetland unit to the back flushing water source and the obturator of intaking wetland pond, 2 component Xie Shenlvshidichi and go out top, meadow bog pond.
The bottom, pond of multistage current wetland processing unit is provided with at least 1 of counter-flushing pipeline; Counter-flushing pipeline is embedded in the bottom that decomposes filter layer; Counter-flushing pipeline runs through into water wetland pond, 2 component Xie Shenlvshidichi and goes out the bottom, pond in meadow bog pond; Counter-flushing pipeline is connected with the back flushing main pipe, and the back flushing main pipe is drawn outside the pond, and the back flushing main pipe is export-oriented counter-flushing pipeline input back flushing water source from the pond.
After multistage current wetland processing unit moves for some time, decompose filter layer and occur blocking, the obturator that decomposes in the filter layer influences the decomposition reaction of decomposing filter layer, need implement back flushing to decomposing filter layer.Inject the back flushing water source from the back flushing main pipe to counter-flushing pipeline; Filter layer is decomposed in flushing; Decomposing obturator back flushing in the filter layer to intaking wetland pond, 2 component Xie Shenlvshidichi and go out the top in meadow bog pond, back flushing water source and obturator are discharged multistage subsurface flow wetland unit through the back flushing connected entrance and the back flushing evacuation port on multistage subsurface flow wetland unit top.
Respectively in water inlet wetland pond, go out meadow bog pond and 2 components and separate and be provided with 1 in the infiltration wetland pond at least and detect and observe vertical shaft; Detect the observation vertical shaft and run through the decomposition filter layer; Until the bottom, pond, observe water sampling the well through the water level in the detection observation vertical shaft observation pond and from detecting.
When the dissolved oxygen water body in multistage current wetland processing unit in the operational process; Observe the running condition that vertical shaft is observed water inlet wetland pond, 2 component Xie Shenlvshidichi and gone out the meadow bog pond through detection, and from detect the observation vertical shaft, remove water sample and detect the water quality situation.
The decomposition filter layer is set in the current wetland pond; The gravel of water inlet wetland pond and the decomposition filter layer employing particle diameter 2-4cm that goes out the meadow bog pond; 2 component Xie Shenlvshidichi adopt shale and haydite respectively; Wherein the decomposition filter layer of a component Xie Shenlvshidichi adopts the shale of particle diameter 4-8cm, and the decomposition filter layer of another component Xie Shenlvshidichi adopts the haydite of particle diameter 2-4cm.
Decompose the upper surface of filter layer and plant amphibious kind of plant; The root system of kind of plant is taken root in decomposing filter layer; Kind of plant is reed, wilson iris, cattail, Mitsubishi is spent, deceived to power again; At least plant a kind; The filler matrix that decomposes filter layer is that mikrobe provides and adheres to carrier, and mikrobe forms microbial film at the root system of kind of plant with the filler matrix surface, absorbs the pollutent in the removal water body through kind of plant; And along with the harvesting of kind of plant is shifted out multistage current wetland processing unit with pollutent, dissolved oxygen water body in process of flowing, flow through into water wetland pond, 2 component Xie Shenlvshidichi and go out the meadow bog pond and decompose the top layer and the bottom of filter layer and process the discharging water body.
The decomposition filter layer of multistage current wetland processing unit is arranged on into water wetland pond, 2 component Xie Shenlvshidichi and goes out in the meadow bog pond; Water inlet wetland pond, 2 component Xie Shenlvshidichi adopt different filler matrixes respectively with the decomposition filter layer that goes out the meadow bog pond; On the top layer of decomposing filter layer, plant kind of plant; The root system of kind of plant is taken root in the top layer of decomposing filter layer, constitutes the roots of plants district.Root system of plant and filler matrix are that mikrobe provides the carrier that adheres to; Root system of plant provides oxygen source for mikrobe again; Zone near the decomposition filter layer in roots of plants district forms aerobic zone, forms anaerobic zone or aerobic area in the zone away from the decomposition filter layer in roots of plants district.Multistage current wetland processing unit of the present invention is compared with natural wetland, and current are current downflow on the top layer of filler matrix, is difficult for growing mosquitos and flies, the surperficial kind of plant of filler matrix, and the purification of water quality ability is strong, and landscape effect is good.
The receipts water pipe is installed along pool wall in the pool wall top of multistage current wetland processing unit one end; Receiving water pipe is installed in the decomposition filter layer; An end of receiving water pipe is connected with the water-in of accumulating the discharging pond; The water outlet end of receiving water pipe is provided with gate valve, the water yield that control is discharged, and the receipts water pipe is input to the water body of collecting to be accumulated in the discharging pond.
The pool wall top of the multistage current wetland processing unit the other end is provided with water distributor along pool wall; Water distributor is installed in and decomposes in the filter layer; One end of water distributor is connected with the water outlet of aeration oxygen replenishing processing unit; The water inlet end of water distributor is provided with gate valve, and the control flooding quantity is outflow uniformly is spread in the decomposition filter layer in water wetland pond into through the water body behind the aeration oxygen replenishing processing unit dissolved oxygen.
Water inlet wetland pond, 2 component Xie Shenlvshidichi and the structure that goes out the meadow bog pond realize that the water body wave flows in the multistage current wetland processing unit of the present invention; Be spread in the into top of the decomposition filter layer of water wetland pond one end from water distributor; Water body flow through into water wetland pond, 2 component Xie Shenlvshidichi and go out the meadow bog pond and form the top layer to bottom; Bottom arrives flowing of top layer again, is installed in the water body of the receipts water pipe of the multistage current wetland processing unit the other end in the top collection and treatment of decomposing filter layer at last.Compare with natural wetland; The present invention's processing power under the equal area condition increases substantially; Can overcome the relatively more fragile shortcoming of natural wetland; Have advantages such as rate of load condensate height, floor space are little, reliable for effect, anti impulsion load, and current on the filler top layer with current downflow, be difficult for growing mosquitos and flies.The waterplant that wetland surface plantation purification of water quality ability is strong, landscape effect is good when purifying water, plays good landscape effect.
The discharging pond is accumulated in one side setting of one end of multistage current wetland processing unit; Accumulate discharging pond integral body and be box-shaped; The pool wall of accumulating the discharging pond is connected with the pool wall that goes out the meadow bog pond of multistage current wetland processing unit; With go out the meadow bog pond adjacent accumulate the discharging pond pool wall on water-in is set; The water-in of accumulating the discharging pond is connected with the receipts water pipe that goes out the meadow bog pond, accumulates on the pool wall of discharging pond one end delivery pipe is set, and passes through discharged to after treatment discharging water body and arrives river course or lake.
The discharging pond is accumulated in side configuration at an end of multistage current wetland processing unit, accumulates the intact discharging water body of multistage current wetland processing unit processes in the discharging pond, accumulates suitable accumulation wait discharging opportunity, is discharged into river course or lake.
The middle part of multistage current wetland processing unit one side is provided with maintenance emptying control well; Maintenance emptying control well integral body is box-shaped; In the maintenance emptying control well blow-down pipe is set; Blow-down pipe runs through a side borehole wall of maintenance emptying control well; At water inlet wetland pond, the 2 component Xie Shenlvshidichi of multistage current wetland processing unit with go out meadow bog pond one side bottom the maintenance blow-down pipe is set, the maintenance blow-down pipe is with water inlet wetland pond, 2 component Xie Shenlvshidichi and go out the meadow bog pond and connect, and the maintenance blow-down pipe is connected with the interior blow-down pipe of maintenance emptying control well and connects; The control gate valve is set on the maintenance blow-down pipe constitutes the maintenance blowdown piping, overhaul multistage current wetland processing unit through overhauling blowdown piping emptying water inlet wetland pond, 2 component Xie Shenlvshidichi and going out the meadow bog pond.
After multistage current wetland processing unit moves for some time; Multistage current wetland processing unit is implemented maintenance; At first want the water body in the multistage current wetland processing unit of emptying, implement maintenance then, install maintenance emptying control well in the side of multistage current wetland processing unit; The water inlet wetland pond of multistage current wetland processing unit, 2 component Xie Shenlvshidichi and go out meadow bog pond one side bottom configuration maintenance blow-down pipe; The maintenance blow-down pipe is connected to the blow-down pipe in the maintenance emptying control well, discharges water inlet wetland pond, 2 component Xie Shenlvshidichi and goes out the water body in the meadow bog pond from blow-down pipe, and multistage current wetland processing unit is implemented maintenance.
The flow direction that dissolved oxygen clear liquid water body gets into multistage current wetland processing unit is to get into water inlet wetland pond from water distributor; Utilize the deadweight of the water body 2 component Xie Shenlvshidichi that flow through to get into out the meadow bog pond; Pack up and be input in the discharging impoundment dedicated by receiving water pipe, that the dissolved oxygen water body is realized passing through repeatedly in process of flowing is aerobic, the reaction process of anaerobism, nitrification and denitrification is processed the discharging water body.
The present invention realizes that water body wave mobile structure causes water body from the top layer to the bottom, flowing from the bottom to the top layer again, and that water body passes through repeatedly is aerobic, the process of anaerobism, nitrification and denitrification, realizes efficient organic pollutant and the nitrogen phosphorus of removing in the water body.
Multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit are through the pipeline layout that totally is rectangle that is connected; Adopt open layout to be convenient to landscape construction, arrange according to the actual requirement of engineering design plane.
Multi stage precipitation pretreatment unit, multistage acidication processing unit and aeration oxygen replenishing processing unit are set up in parallel and are arranged in a side; Multistage current wetland processing unit is arranged in opposite side and is connected through pipeline, and perhaps multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit are arranged in order and are connected through pipeline.
All-work is made up of multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and multistage current wetland processing unit; Design according to on-site actual situations; One side of multistage current wetland processing unit is arranged multi stage precipitation pretreatment unit, multistage acidication processing unit and aeration oxygen replenishing processing unit; Also can be with multi stage precipitation pretreatment unit, multistage acidication processing unit, aeration oxygen replenishing processing unit and the setting in one line of multistage current wetland processing unit; In a word, according to the on-site actual situations multiple layout type of having suited measures to local conditions.
Source of sewage flows into the multi stage precipitation pretreatment unit certainly after pipeline is collected; Certainly flow into multistage acidication processing unit from the multi stage precipitation pretreatment unit again; After multistage acidication processing unit water outlet gets into the outlet sump that catchments; Rise to the aeration oxygen replenishing processing unit through submersible pump; Water outlet from flowing into multistage current wetland processing unit, is processed the discharging of discharging water body by multistage current wetland processing unit through the reaction process of aerobic, anaerobism, nitrification and denitrification from the aeration oxygen replenishing processing unit behind aeration.All-work adopts open layout, is convenient to landscape construction.
Multi stage precipitation pretreatment unit integral body is closed box; The concrete one-piece casting; Dividing plate by concrete placement in the casing is separated at least 3 spaces, and its space respectively is deposition decomposing pool, fermentation settling tank and impoundment dedicated, the preset airtight slag removing hole at the top of deposition decomposing pool, fermentation settling tank and impoundment dedicated; Install sealing cover on the slag removing hole, the multi stage precipitation pretreatment unit constitutes airtight running space.
The multi stage precipitation pretreatment unit adopts rectangle ground lower storage reservoir; The hydraulic retention design time is not less than 24 hours; 2 road partition walls are set in the multi stage precipitation pretreatment unit, and integral body is divided into three partly, and pool wall abutment wall and partition wall adopt reinforced concrete wall; Plain concrete cushion layer is adopted in the bottom, pond, and thick clay and compacting are applied in the plain concrete cushion layer shop.A slag removing hole is reserved at top in deposition decomposing pool, fermentation settling tank and impoundment dedicated, and slag removing hole is installed the Steel Concrete cover closure, and constituting the multi stage precipitation pretreatment unit is airtight WWT space.
The pool wall top of the deposition decomposing pool of multi stage precipitation pretreatment unit one side is provided with the dirt inlet of reservation; Dirt inlet is introduced source of sewage through pipeline; The pool wall top of the impoundment dedicated of multi stage precipitation pretreatment unit opposite side sets out the mouth of a river; Be connected through the water-in of pipeline, the flow of the multistage acidication processing unit of control gate valve control input is set on the pipeline with the pool wall bottom of multistage acidication processing unit.
Install dirt inlet on the pool wall of deposition decomposing pool; Source of sewage flows into precipitation Xie Chi certainly from dirt inlet; Install water outlet on the pool wall of impoundment dedicated; The water outlet of impoundment dedicated and the unitary water-in of multistage hydrolysis oxidation are made into a drop, and the clear liquid water body of impoundment dedicated flows into multistage hydrolysis oxidation unit certainly from water outlet.
At least 1 of the flow tube of the preset inclination in dividing plate middle part between deposition decomposing pool and the fermentation settling tank; The inlet of the flow tube of deposition decomposing pool is lower than the outlet of the flow tube of fermentation settling tank; The flow tube of the preset inclination in dividing plate middle part between fermentation settling tank and the impoundment dedicated; The inlet of the flow tube of fermentation settling tank is lower than the outlet of the flow tube of impoundment dedicated; Source of sewage utilizes focusing on certainly in the multi stage precipitation pretreatment unit of water body mobile to the water outlet following current of the other end by the dirt inlet of an end, in process of flowing, realizes deposition, fermentation, decomposes, sterilizes.
2 road partition walls are set in the multi stage precipitation pretreatment unit; Integral body is divided into three partly; Promptly precipitate decomposing pool, fermentation settling tank and impoundment dedicated, on 2 road partition walls, install the flow tube of inclination, water-in is lower than water outlet; Utilize clear liquid in the deadweight pond of water body from flowing in the adjacent pond, in process of flowing, source of sewage is implemented deposition, fermentation, decomposition and sterilising treatment.
Multistage acidication processing unit is closed box; The concrete one-piece casting; Dividing plate by concrete placement in the casing is separated at least 3 spaces; Water-in is preset in the pool wall bottom of multistage acidication processing unit one end, and water outlet is preset on the pool wall top of the other end, and the casing inner route clapboard of multistage acidication processing unit is separated into into water hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; The preset airtight access hole in top in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond is installed sealing cover on the access hole.
Multistage hydrolysis oxidation unit is made into rectangle ground lower storage reservoir; The hydraulic retention design time is for being not less than 6 hours, and establishing two road dividing plates in the pond is guide-wall, and pool wall abutment wall and guide-wall adopt reinforced concrete wall; Plain concrete cushion layer is adopted in the bottom, pond, and thick clay and compacting are applied in the plain concrete cushion layer shop.An access hole is reserved at the top in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, and access hole is installed the Steel Concrete cover closure, and constituting multistage hydrolysis oxidation unit is airtight WWT space.
On the dividing plate in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, install L shaped flow tube; The water inlet of L shaped flow tube is in the top of dividing plate; The water outlet of L shaped flow tube is in the bottom in another spatial hydrolysed filtrate layer, connects the space in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; In water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, the hydrolysed filtrate layer is set; The top ends of hydrolysed filtrate layer is lower than the water-in of L shaped flow tube and the water outlet on the pool wall; Fill the acidication filtrate in the hydrolysed filtrate layer, the acidication filtrate adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain.
Install L shaped flow tube on the unitary guide-wall of multistage hydrolysis oxidation; The water inlet of L shaped flow tube is in the top of guide-wall, and the water-in of L shaped flow tube is higher than the hydrolysed filtrate layer, and the water outlet of L shaped flow tube is installed in the bottom of hydrolysed filtrate layer; The water-in of L shaped flow tube is collected the harmless water body that after the hydrolysed filtrate layer filters, covers the hydrolysed filtrate layer; And the L shaped flow tube in edge is sent into the bottom of hydrolysed filtrate layer, and the water-in of L shaped flow tube is lower than water outlet, forms a drop; Utilize clear liquid in the deadweight pond of water body from flowing in the adjacent pond, in process of flowing, the clear liquid water body is implemented hydrolysis, oxidation, fermentation and process harmless water body.In the pond in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond, install the hydrolysed filtrate layer, the hydrolysed filtrate layer adopts the elastic biological filler.
The outer outlet sump that catchments that is provided with of the pool wall of multistage acidication processing unit the other end; The outlet sump integral body of catchmenting is box-shaped; The outlet sump integral body of catchmenting is built by laying bricks or stones, and the outlet sump that catchments is connected with the pool wall end of the multistage acidication processing unit the other end, and the water outlet of multistage acidication processing unit connects with the outlet sump that catchments; The outlet sump inner bottom part that catchments is installed submersible pump, and submersible pump passes water outlet through pipeline and is transported to the clear liquid water body of hydrolysis oxidation in the aeration oxygen replenishing processing unit.
The unitary end of multistage hydrolysis oxidation disposes the outlet sump that catchments; The water outlet on the unitary pool wall of multistage hydrolysis oxidation top is in the top of the outlet sump that catchments; Form a drop; Harmless water body after the multistage hydrolysis oxidation cell processing flows into the outlet sump that catchments certainly from the water outlet on the unitary pool wall of multistage hydrolysis oxidation top, and configuration submersible pump in the outlet sump that catchments is sent into the harmless water body lifting in the outlet sump that catchments in the aeration oxygen replenishing processing unit.
Aeration oxygen replenishing processing unit integral body is box-shaped, the concrete one-piece casting, and preset water-in on the pool wall of aeration oxygen replenishing processing unit one end, the harmless water body of the hydrolysis oxidation in the outlet sump that catchments gets in the aeration oxygen replenishing processing unit from water-in through pipeline.
The aeration oxygen replenishing processing unit is made into the semi-underground uncovered pond of rectangle, and the hydraulic retention design time is for being not less than 4 hours, and the pool wall abutment wall adopts reinforced concrete wall, and plain concrete cushion layer is adopted in the bottom, pond, and thick clay and compacting are applied in the plain concrete cushion layer shop.
Aerator is installed on the pool wall top of the aeration oxygen replenishing processing unit the other end; The bottom, pond of aeration oxygen replenishing processing unit is provided with 1 aeration tube at least along the bottom, pond, and aeration tube is connected with main pipe, and aerator is connected with the main pipe end; The control gate valve is set on the main pipe; The air input of control aeration tube, aerator increase the content of dissolved oxygen in the harmless water body through main pipe and aeration tube aeration in the pond of aeration oxygen replenishing processing unit.
Dispose aerator on the pool wall of aeration oxygen replenishing processing unit, aeration tube is installed in the bottom, pond of aeration oxygen replenishing processing unit, and aerator to the aeration tube delivering gas, increases the content of dissolved oxygen through main pipe in harmless water body through aeration tube.
Water outlet is preset on the top of one side of aeration oxygen replenishing processing unit, is connected through the water distributor of pipeline with multistage current wetland processing unit, and gravity flow is transported in the multistage current wetland processing unit through the dissolved oxygen clear liquid water body after the oxygenation.
Water outlet is installed on the pool wall top of aeration oxygen replenishing processing unit; Water outlet is connected with the water distributor of multistage subsurface flow wetland unit and connects; The decomposition filter layer of rising pipe and water distributor and multistage subsurface flow wetland unit forms a drop; Dissolved oxygen water body after the oxygenation of aeration oxygen replenishing processing unit is from the top of water distributor from the decomposition filter layer that flows into water inlet wetland pond, the wetland of spreading water inlet uniformly pond the decomposition filter layer in.
Multistage current wetland processing unit integral body is box-shaped; The concrete one-piece casting is separated at least 4 group current wetland ponds through dividing plate, is arranged in order to water inlet wetland pond, 2 component Xie Shenlvshidichi and goes out the meadow bog pond; Water inlet wetland pond, 2 component Xie Shenlvshidichi and go out the decomposition filter layer is set respectively in the meadow bog pond; Water inlet wetland pond is separated with a component wherein and is preset dividing plate between the infiltration wetland pond, and the top ends of dividing plate is higher than the decomposition filter layer, and the bottom of dividing plate is provided with at least 1 of horizontal flow tube; At least 1 of back flushing connected entrance is installed on the top of dividing plate, and the back flushing connected entrance is higher than the upper epidermis that decomposes filter layer.
Go out meadow bog pond and another component and separate preset dividing plate between the infiltration wetland pond; The top ends of dividing plate is higher than the decomposition filter layer; The bottom of dividing plate is provided with at least 1 of horizontal flow tube, and at least 1 of back flushing connected entrance is installed on the top of dividing plate, and the back flushing connected entrance is higher than the upper epidermis that decomposes filter layer.
2 components are separated between the infiltration wetland pond dividing plate are set, and dividing plate is installed in and decomposes in the filter layer, and the top ends of dividing plate is lower than the decomposition filter layer, and the decomposition filter layer that 2 components are separated top, infiltration wetland pond is connected.The back flushing evacuation port is installed on the pool wall top of multistage current wetland processing unit one end, discharges together outside the multistage current wetland processing unit from back flushing water source and obturator that the back flushing evacuation port decomposes filter layer with back flushing.
Be provided with on the multistage current wetland processing unit undisturbed soil, dispose 3 road partition walls and be divided into into water wetland pond, 2 component Xie Shenlvshidichi and go out the meadow bog pond, constitute the wave flow structure.Multistage current wetland processing unit is introduced the dissolved oxygen water body by the aeration oxygen replenishing processing unit, and from the end entering of multistage current wetland processing unit, horizontal water distribution is through the other end water outlet of 3 road partition walls from multistage current wetland processing unit.Multistage current wetland processing unit adopts outside the concrete one-piece casting; Also can on undisturbed soil, excavate the multistage current wetland processing unit of box-shaped; Dispose the 3 road clays wall that blocks water; The 3 roads wall that blocks water is divided into 4 placed in-line water inlet wetland ponds, 2 component Xie Shenlvshidichi and goes out the meadow bog pond; At least 1 of the wall bottom configuration level flow tube of blocking water of two ends configurations, the back flushing connected entrance is higher than the top layer of decomposing filter layer, forms water inlet wetland pond and wherein a component Xie Shenlvshidichi and another component Xie Shenlvshidichi are communicated with bottom going out the meadow bog pond.The wall top that blocks water of two ends configuration disposes at least 1 of back flushing connected entrance; The back flushing evacuation port is installed on the pool wall top of multistage current wetland processing unit one end, discharges together outside the multistage current wetland processing unit from back flushing water source and obturator that the back flushing evacuation port decomposes filter layer with back flushing.Water inlet wetland pond, 2 component Xie Shenlvshidichi and go out to dispose successively in the meadow bog pond gravel, haydite, shale and gravel and constitute and decompose filter layer; The decomposition filter layer of 2 component Xie Shenlvshidichi covers 2 components and separates the wall that blocks water between the infiltration wetland pond; The top decomposition filter layer of separating the wall that blocks water between the infiltration wetland pond in 2 components is communicated with 2 component Xie Shenlvshidichi; Wall is changed the direction of a stream of water through blocking water; In the decomposition filter layer of dissolved oxygen water body in multistage current wetland processing unit by the top layer to bottom, being flowed repeatedly to the top layer by bottom forms awave mobilely again, implements the reaction process of aerobic, anaerobism, nitrification and denitrification.
At least 1 of counter-flushing pipeline is laid in bottom, pond at multistage current wetland processing unit; Counter-flushing pipeline is laid on the bottom that decomposes filter layer; Counter-flushing pipeline runs through the bottom, pond of multistage current wetland processing unit; Be connected counter-flushing pipeline with the back flushing main pipe, the back flushing main pipe is drawn outside the pond, and export-oriented counter-flushing pipeline injects the back flushing water source to the back flushing main pipe from the pond.
Multistage current wetland processing unit is after operation for some time; Blocking appears in water inlet wetland pond, 2 component Xie Shenlvshidichi and the decomposition filter layer that goes out in the meadow bog pond; Decompose in the filter layer and produce obturator; The decomposition reaction that filter layer is decomposed in the obturator influence need be implemented back flushing to decomposing filter layer.At water inlet wetland pond, 2 component Xie Shenlvshidichi with go out the preset counter-flushing pipeline in bottom, pond in meadow bog pond; Counter-flushing pipeline is connected with the back flushing main and connects; The back flushing main is drawn outside the pond; When implementing back flushing, inject the back flushing water source from the back flushing main pipe to counter-flushing pipeline, filter layer is decomposed in flushing; Arrive the obturator back flushing of decomposing in the filter layer on the top layer of decomposing filter layer, back flushing water source and obturator are discharged multistage subsurface flow wetland unit through the back flushing connected entrance and the back flushing evacuation port on multistage subsurface flow wetland unit top.
In water inlet wetland pond, go out meadow bog pond and 2 components and separate and be provided with 1 in the infiltration wetland pond at least respectively and detect and observe vertical shaft, detect and observe vertical shaft and run through the decomposition filter layer, until the bottom, pond.
In water inlet wetland pond, go out meadow bog pond and 2 components and separate in the infiltration wetland pond respectively configuration detection and observe vertical shaft; When whether the dissolved oxygen water body reaches design requirements in the operational process in multistage current wetland processing unit; From detect to observe vertical shaft, extract water sample and detect water quality and whether reach design requirements, in time regulate the gate valve on the water distributor, the control flooding quantity; Suppress to decompose the flow velocity in the filter layer, adjustment is decomposed filter layer and is in best decomposing state.
The gravel of water inlet wetland pond and the decomposition filter layer employing particle diameter 2-4cm that goes out the meadow bog pond; The decomposition filter layer of the wherein component Xie Shenlvshidichi of 2 component Xie Shenlvshidichi adopts the shale of particle diameter 4-8cm, and the decomposition filter layer of another component Xie Shenlvshidichi adopts the haydite of particle diameter 2-4cm.
Upper surface decomposing filter layer is planted amphibious kind of plant, and the root system of kind of plant is taken root in decomposing filter layer, and kind of plant is reed, wilson iris, cattail, power is spent, deceived Mitsubishi again, plants a kind at least.
Multistage acidication processing unit is the anaerobic biological reactor of configuration hydrolysed filtrate layer; Water inlet wetland pond, go out meadow bog pond and 2 components and separate and dispose gravel, haydite, shale and gravel in the infiltration wetland pond respectively; Constitute the hydrolysed filtrate layer; Filter material surface at the hydrolysed filtrate layer has the microbial population that the microbial film form is grown, and has retained the mikrobe of a large amount of suspension growths in the space between the filtrate, when the dissolved oxygen water body passes through the hydrolysed filtrate layer; Organism is trapped, absorption and metabolism are decomposed, and reaches stabilization at last.Water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond are configured to airtight anaerobic environment, and the albumen organic matter decomposes through anaerobically fermenting in anaerobic environment, and produce material such as ammonia, have the effect of killing parasitic ovum and germ.
On the top layer of decomposing filter layer, plant kind of plant, the root system of kind of plant is taken root in the top layer of decomposing filter layer, builds the roots of plants district.Root system of plant and filler matrix are that mikrobe provides the carrier that adheres to; Root system of plant provides oxygen source for mikrobe again; Aerobic zone is built in zone near the decomposition filter layer in roots of plants district, builds anaerobic zone in the zone away from the decomposition filter layer in roots of plants district.
The pool wall top of multistage current wetland processing unit one end is received water pipe and is installed in the decomposition filter layer along the preset receipts of pool wall water pipe, and an end of receiving water pipe is connected with the water-in of accumulating the discharging pond, and the receipts water pipe is input to the water body of collection to be accumulated in the discharging pond.
The pool wall top of the multistage current wetland processing unit the other end is along the preset water distributor of pool wall, and water distributor is installed in and decomposes in the filter layer, and an end of water distributor is connected with the water outlet of aeration oxygen replenishing processing unit.
On the end wall of multistage current wetland processing unit, dispose water distributor and receive water pipe along pool wall respectively; Water distributor is embedded in the upper surface that decomposes filter layer with the receipts water pipe; Water distributor is uniformly from the top spreading dissolved oxygen water body of the decomposition filter layer in water inlet wetland pond, receives water pipe from going out the discharging water body after meadow bog decomposes the top collection and treatment of filter layer.
The discharging pond is accumulated in one side setting of one end of multistage current wetland processing unit; Accumulate discharging pond integral body and be box-shaped; Accumulate discharging pond integral body and build by laying bricks or stones, the pool wall of accumulating the discharging pond is connected with the pool wall that goes out the meadow bog pond, accumulates on the pool wall that discharges the pond water-in is set; The water-in of accumulating the discharging pond is connected with the receipts water pipe that goes out the meadow bog pond, accumulates on the pool wall that discharges pond one end delivery pipe is set.
The discharging pond is accumulated in side configuration at an end of multistage current wetland processing unit, accumulates the intact discharging water body of multistage current wetland processing unit processes in the discharging pond, accumulates suitable accumulation wait discharging opportunity, is discharged into river course or lake.
The middle part of multistage current wetland processing unit one side is provided with maintenance emptying control well; Maintenance emptying control well integral body is box-shaped, and maintenance emptying control well integral body is built by laying bricks or stones, in the maintenance emptying control well blow-down pipe is set; Blow-down pipe runs through a side borehole wall of maintenance emptying control well; At the preset maintenance of the side bottom blow-down pipe of multistage current wetland processing unit, the maintenance blow-down pipe is connected with the interior blow-down pipe of maintenance emptying control well and connects, and the control gate valve is set on the maintenance blow-down pipe constitutes the maintenance blowdown piping.
Install maintenance emptying control well in the side of multistage current wetland processing unit; After multistage current wetland processing unit moves for some time; Multistage current wetland processing unit is implemented maintenance and maintenance, at first want the water body in the multistage current wetland processing unit of emptying, implement maintenance then; At water inlet wetland pond, the 2 component Xie Shenlvshidichi of multistage current wetland processing unit with go out meadow bog pond one side bottom configuration maintenance blow-down pipe; The maintenance blow-down pipe is connected to the blow-down pipe in the maintenance emptying control well, discharges water inlet wetland pond, 2 component Xie Shenlvshidichi and goes out the water body in the meadow bog pond from blow-down pipe, and multistage current wetland processing unit is implemented maintenance.
Source of sewage gets in the deposition decomposing pool through the dirt inlet of pipeline from the deposition decomposing pool of multi stage precipitation pretreatment unit; Carrying a certain amount of suspended substance, swimmer and silt in the source of sewage secretly; The proportion of source of sewage impurities is different, and source of sewage forms scum silica frost, the sewage water body in middle level and the sediment of sinking that floats after getting into the deposition decomposing pool, the airtight formation anaerobic environment of deposition decomposing pool; The albumen organic matter that source of sewage contains decomposes through anaerobically fermenting; And produce material such as ammonia, and kill parasitic ovum and germ, realize deposition, decompose, fermentation, sterilization WWT; Because the middle level sewage water body in the effect of the water body gravity deposition decomposing pool gets into flow tube from the inlet of the flow tube that is arranged on the partition wall middle part, from the outlet that is higher than flow tube from flowing in the fermentation settling tank.
Contain suspended substance, swimmer and silt class in the source of sewage, source of sewage comprises sewage and breeding wastewater.Carrying ight soil secretly in sewage and the breeding wastewater; Directly get into follow-up WWT unit; The follow-up WWT of meeting unit; Influence the unitary normal operation of follow-up WWT, that carries secretly in the no water source of multistage sewage of the present invention and processing unit interception has suspended substance, swimmer and a silt class, regulates and be deposited in multi stage precipitation pretreatment unit following current enforcement pre-treatment to the collection of ight soil, harmless treatment, the water yield.
The deposition decomposing pool is mainly held back and is contained the more ight soil of worm's ovum, and loose excrement piece expands because of fermentation and produces come-up, the then sinking that proportion is bigger; Form the excrement skin of upper strata for come-up; The middle level is a liquid manure, the excrement slag of lower floor for sinking, and wherein parasitic proportion more also sinks at the bottom of the pond.The deposition decomposing pool is built the closing anaerobic environment, through anaerobically fermenting and decomposition of protein organic matter, and material such as generation ammonia etc., have the effect of killing parasitic ovum and germ.
The sewage water body that gets in the fermentation settling tank further ferments, precipitates; The fermentation settling tank reduces with the quantity that the deposition decomposing pool is compared scum silica frost and suspended substance relatively; The sewage water body is in the comparison stationary state; Fermentation and the degree of decomposing are lower; The scum silica frost and the suspended substance that help in the sewage water body continue to realize fermentation, decompose and deposition, the sewage water body again through fermentation, post precipitation because the sewage liquid of the effect fermentation settling tank mesonexine of water body gravity gets into flow tube from the inlet of the flow tube that is arranged on the partition wall middle part, from the outlet that is higher than flow tube from flowing in the impoundment dedicated.
The effect of fermentation settling tank is further fermentation, deposition; Compare with the deposition decomposing pool; Get into the excrement skin of fermentation settling tank and the quantity of excrement slag and reduce relatively, the degree that fermentation is decomposed is lower, does not have the entering of new ight soil; So the fermentation settling tank is in the comparison stationary state, the worm's ovum that helps swimming in the manure pit continues deposition at the bottom of the pond.
Sewage liquid in the entering impoundment dedicated further separates and precipitates; Be stored in the interior sewage liquid middle level of impoundment dedicated with supernatant; Remaining scum silica frost and suspended substance sink at the bottom of the pond; Along with sewage liquid constantly gets into impoundment dedicated, the water level of the sewage liquid of impoundment dedicated also constantly raises, and the supernatant liquid of sewage liquid passes through pipeline self to multistage hydrolysis oxidation unit from the water outlet that is installed in pool wall top; Get in the multistage hydrolysis oxidation unit from the water-in of the unitary pool wall of multistage hydrolysis oxidation bottom; Source of sewage through the multiple-stage treatment of multi stage precipitation pretreatment unit scum, suspended substance and sediment, kill parasitic ovum, pathogenic micro-organism and bacterium through fermentation, decomposition, deposition and storage, reached innoxious design requirements; The sewage clear liquid is processed in the pre-treatment of source of sewage process multi stage precipitation pretreatment unit, and the sewage clear liquid gets into multistage acidication processing unit.
The effect of impoundment dedicated mainly is to store the sewage clear liquid; Source of sewage through after deposition decomposing pool and the processing of fermentation settling tank gets into impoundment dedicated, removes suspended substance, swimmer and silt class material basically, and kills parasitic ovum and pathogenic micro-organism; Process the sewage clear liquid, reach innoxious requirement.Source of sewage is through fermentation, decomposition, deposition and the storage of deposition decomposing pool, the processing of fermentation settling tank and impoundment dedicated; Remove suspended substance, swimmer and silt class; The effect of killing ova and bacterium, in the impoundment dedicated in, the sewage clear liquid on upper strata gets into multistage hydrolysis oxidation unit.
Multistage acidication processing unit is separated at least 3 spaces by dividing plate; Be divided into into water hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; The L shaped water pipe of crossing is installed on the top of dividing plate; Install the hydrolysed filtrate layer in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and the water outlet hydrolysis oxidation pond, the microbial population of the surface attachment microbial film form growth of the acidication filtrate in the hydrolysed filtrate layer.
The macromolecule organic concentration of the sewage in the no water source is more; And pollutent such as nitrogen, phosphorus is many to be present in the water body with organonitrogen and organophosphorus form; Like protein-based, urea, biomass cells body etc.;, follow-up multistage subsurface flow wetland unit is unfavorable for quick degraded when handling, need low molecule organic matter, organonitrogen be degraded to inorganic nitrogen, organic phosphorus degrading is an inorganic phosphorus etc., improves the efficient that multistage subsurface flow wetland unit is removed pollutent through in anaerobic environment, macromolecule organic being degraded to.
The sewage clear liquid gets into the hydrolysed filtrate layer bottom in water inlet hydrolysis oxidation pond from the water-in of multistage acidication processing unit bottom; In the hydrolysed filtrate layer along with the continuous inflow water inlet hydrolysis oxidation pond of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer; The water level of sewage clear liquid covers the into hydrolysed filtrate layer in water hydrolysis oxidation pond, rises to the into top in water hydrolysis oxidation pond, reaches the water outlet of the L shaped flow tube that is installed in dividing plate top; Behind the hydrolysis oxidation of sewage clear liquid through the hydrolysed filtrate layer in water inlet hydrolysis oxidation pond, get into the bottom of the hydrolysed filtrate layer in hydrolysis oxidation pond from water inlet hydrolysis oxidation pond through L shaped flow tube.
In the hydrolysed filtrate layer along with the hydrolysis oxidation pond that continues to flow of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer; The water level of sewage clear liquid covers the hydrolysed filtrate layer in hydrolysis oxidation pond, rises to the top in hydrolysis oxidation pond, reaches the water outlet of the L shaped flow tube that is installed in dividing plate top; After the sewage clear liquid passes through the hydrolysis oxidation of hydrolysed filtrate layer in hydrolysis oxidation pond once more, get into the bottom of the hydrolysed filtrate layer in water outlet hydrolysis oxidation pond from the hydrolysis oxidation pond through L shaped flow tube.
In the hydrolysed filtrate layer along with the continuous inflow water outlet hydrolysis oxidation pond of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer, and the water level of sewage clear liquid covers the hydrolysed filtrate layer in water outlet hydrolysis oxidation pond, rises to the top in water outlet hydrolysis oxidation pond; Reach the water outlet on the pool wall top that is installed in multistage acidication processing unit; After the sewage clear liquid passed through the hydrolysis oxidation of hydrolysed filtrate layer in water outlet hydrolysis oxidation pond again, the water outlet through pool wall top got into the outlet sump that catchments, and the sewage clear liquid is through the hydrolysed filtrate layer of multistage acidication processing unit; The microbial population of the surface attachment of acidication filtrate is held back in the process of hydrolysed filtrate layer of flowing through, absorption and metabolism decompose the organism in the sewage clear liquid; Simultaneously, the closing anaerobic environment that multistage acidication processing unit forms is implemented anaerobically fermenting to the albumen organic matter; The decomposition of protein organic matter also produces materials such as ammonia; Play the effect of killing parasitic ovum and germ, macromolecule organic is degraded to low molecule organic matter, organonitrogen is degraded to inorganic nitrogen, organic phosphorus degrading is an inorganic phosphorus; Help the quick degraded of follow-up multistage current wetland processing unit, improve wetland and handle removal efficient pollutent.
Multistage hydrolysis oxidation unit is the anaerobic biological reactor of configuration hydrolysed filtrate layer; Microbial population in the surface attachment microbial film form growth of the matrix filtrate of hydrolysed filtrate layer; Held back the mikrobe of a large amount of suspension growths in the space between the matrix filtrate, when the sewage water body passed through the hydrolysed filtrate layer, organism was trapped; Absorption and metabolism are decomposed, and finally reach stabilization.Multistage hydrolysis oxidation unit is to build the closing anaerobic environment, and the albumen organic matter obtains decomposing through anaerobically fermenting, and produces material such as ammonia, has the effect of killing parasitic ovum and germ.
The sewage clear liquid is handled through the hydrolysis oxidation of multistage acidication processing unit and is processed harmless water body; Harmless water body is accumulated in the outlet sump that catchments; Along with constantly accumulating of harmless water body, the submersible pump that is installed in the outlet sump that catchments is transported to harmless water body lifting in the aeration oxygen replenishing processing unit through pipeline.
Harmless water body enters in the aeration oxygen replenishing processing unit from the water-in of aeration oxygen replenishing processing unit; The aerator of aeration oxygen replenishing processing unit is implemented the aeration oxygen replenishing processing through main pipe and aeration tube to harmless water body and is processed the dissolved oxygen water body; It is the dissolved oxygen content in the harmless water body that harmless water body is implemented the aeration oxygen replenishing processing, for the aerobic microbiological in the multistage current wetland processing unit provides oxygen source.
Behind multistage hydrolysis oxidation unit hydrolysis oxidation, the content of dissolved oxygen is extremely low in the water body, and the main effect of aeration oxygen replenishing processing unit is the content that improves the dissolved oxygen in the sewage water body fast, for the aerobic microbiological in the follow-up multistage subsurface flow wetland unit provides oxygen source.
Continuous increase along with dissolved oxygen water body in the aeration oxygen replenishing processing unit; The dissolved oxygen water body flows into the water distributor of multistage current wetland processing unit certainly through pipeline from water outlet; Water distributor is spread in the dissolved oxygen water body in the decomposition filter layer in water inlet wetland pond of multistage current wetland processing unit uniformly; Along with the water body action of gravity of dissolved oxygen water body is full of the into decomposition filter layer in water wetland pond; Water level in the water inlet wetland pond constantly raises, the dissolved oxygen water body from the horizontal flow tube entering of the lower partition wherein a component separate the bottom in the infiltration wetland pond, the dissolved oxygen water body constantly pours in wherein a component Xie Shenlvshidichi and is full of another component Xie Shenlvshidichi.
Multistage subsurface flow wetland unit is built " matrix filtrate-kind of plant-mikrobe " ecosystem of a kind of uniqueness by forming attached to the mikrobe in roots of plants district in matrix filtrate, waterplant and the decomposition filter layer.The structure of multistage subsurface flow wetland unit is a wave mobile current wetland, and the root system of kind of plant is taken root on the top layer of decomposing filter layer, and kind of plant root system and matrix filtrate are that mikrobe provides the carrier that adheres to, and the root system of kind of plant provides oxygen source for mikrobe again.Decomposition filter layer near the root district forms aerobic zone; Decomposition filter layer away from the root district forms anaerobism or aerobic area, and the dissolved oxygen water body flows to the bottom that decomposes filter layer from the upper epidermis that decomposes filter layer, flows to the upper epidermis that decomposes filter layer from the bottom that decomposes filter layer again; Constantly back and forth; Dissolved oxygen water body wave in multistage subsurface flow wetland unit flows, and passes through the reaction process of aerobic, anaerobism, nitrification and denitrification repeatedly, realizes efficient organic pollutant and the nitrogen phosphorus removed.
The dissolved oxygen water body is full of the wherein decomposition filter layer of a component Xie Shenlvshidichi; Wherein the water level separated in the infiltration wetland pond of a component constantly raises; Along with the water level of dissolved oxygen water body raises and covers the top of dividing plate; The dissolved oxygen water body gets into another component Xie Shenlvshidichi from the dividing plate top, the continuous inflow of dissolved oxygen water body is full of the decomposition filter layer of another component Xie Shenlvshidichi, and the water level that another component is separated in the infiltration wetland pond constantly raises; Along with the water body action of gravity of the dissolved oxygen water body horizontal flow tube from the lower partition gets into out in the decomposition filter layer in meadow bog pond; The dissolved oxygen water body constantly pours in out the decomposition filter layer in meadow bog pond and is full of the meadow bog pond, and the water level that goes out in the meadow bog pond constantly raises, and reaches the position of receipts water pipe along with the water level rising of dissolved oxygen water body.
The dissolved oxygen water body gets into multistage current wetland processing unit; The decomposition filter layer of flowing through into water wetland pond, 2 component Xie Shenlvshidichi and going out the meadow bog pond forms awave flowing; Water inlet wetland pond, 2 component Xie Shenlvshidichi and the decomposition filter layer that goes out the meadow bog pond constitute " matrix--plant--mikrobe " ecosystem; The root system of kind of plant is taken root in the top layer of decomposing filter layer, and the filler matrix that decomposes filter layer is that mikrobe provides the carrier that adheres to, and the root system of kind of plant is that mikrobe provides oxygen source; Filler matrix layer near the root district forms aerobic zone; Form anaerobic zone or aerobic area away from the filler matrix layer in root district, the dissolved oxygen water body is flowed through in process of flowing and is decomposed the top layer and the bottom of filter layer, passes through the reaction process of aerobic, anaerobism, nitrification and denitrification repeatedly; Implement efficient organic pollutant and the nitrogen phosphorus of removing in the dissolved oxygen water body and process the discharging water body; Discharging water body income is received in the water pipe, and the discharging water body gets in the discharging impoundment dedicated and accumulates from receiving water pipe, again by discharged to the river course or the lake.
The present invention compares with natural wetland; Sewage treatment capacity increases substantially under the equal area condition, overcomes the relatively fragile shortcoming of natural wetland, has advantages such as rate of load condensate height, floor space are little, reliable for effect, anti impulsion load; Current on the top layer of decomposing filter layer with current downflow; Be difficult for growing mosquitos and flies, plantation purification of water quality ability is strong, has good landscape effect.
When the dissolved oxygen water body in multistage current wetland processing unit in the operational process; Whether reach design requirements through detecting the running condition of observing vertical shaft observation water inlet wetland pond, 2 component Xie Shenlvshidichi and going out the meadow bog pond; From detect to observe vertical shaft, extract water sample and detect water quality and whether reach design requirements, in time regulate the gate valve on the water distributor, the control flooding quantity; Suppress to decompose the flow velocity in the filter layer, adjustment is decomposed filter layer and is in best decomposing state.
When the dissolved oxygen water body in multistage current wetland processing unit in the operational process; Whether reach design requirements through detecting the running condition of observing vertical shaft observation water inlet wetland pond, 2 component Xie Shenlvshidichi and going out the meadow bog pond; From detect to observe vertical shaft, extract water sample and detect water quality and whether reach design requirements, in time regulate the gate valve on the water distributor, the control flooding quantity; Suppress to decompose the flow velocity in the filter layer, adjustment is decomposed filter layer and is in best decomposing state.
When the dissolved oxygen water body in multistage current wetland processing unit in the operational process; Observe the running condition that vertical shaft is observed water inlet wetland pond, 2 component Xie Shenlvshidichi and gone out the meadow bog pond through detection, and from detect the observation vertical shaft, remove water sample and detect the water quality situation.
Bottom settlings in multi stage precipitation pretreatment unit operation for some time postprecipitation decomposing pool, fermentation settling tank and impoundment dedicated sediment; Need implement scarfing cinder, desilting to deposition decomposing pool, fermentation settling tank and impoundment dedicated according to design requirements; Close the gate valve on the pipeline of dirt inlet; Stop the inflow of source of sewage, close the gate valve on the pipeline of water outlet, stop the outflow of the source of sewage after the WWT.Open the sealing cover of deposition decomposing pool, fermentation settling tank and impoundment dedicated top slag removing hole, sediment and mud in scavenger precipitation decomposing pool, fermentation settling tank and the impoundment dedicated are removed the dirt that adheres on flow tube, dirt inlet and the water outlet inwall, keep unimpeded.Close the sealing cover of deposition decomposing pool, fermentation settling tank and impoundment dedicated top slag removing hole, open the gate valve on the pipeline of gate valve and water outlet on the pipeline of dirt inlet, startup multi stage precipitation pretreatment unit resumes operation.
Be entrained with a certain amount of suspended substance, swimmer and silt and so in the source of sewage; After deposition, decomposition; Source of sewage realizes separating; The sewage water body that is in the middle level is under the effect of water body gravity, and the flow tube that is installed in the dividing plate middle part through inclination is diverted in next pond, several times shunts the WWT of implementing next flow process in the multistage hydrolysis oxidation unit until flowing automatically to from the water outlet that is installed in the multi stage precipitation pretreatment unit the other end; Suspended substance, swimmer and silt in the multistage hydrolysis oxidation unit and so on constantly is deposited at the bottom of the pond; Sediment at the bottom of operation pond after a while is accumulated at the bottom of the pond, influences the operation of the WWT of multi stage precipitation pretreatment unit, then need implement scarfing cinder work to the multi stage precipitation pretreatment unit.
When multistage acidication processing unit was implemented to overhaul and safeguard to water inlet hydrolysis oxidation pond, hydrolysis oxidation pond, water outlet hydrolysis oxidation pond and the outlet sump that catchments according to design requirements after operation for some time; Close the gate valve on the pipeline of water-in; Stop the inflow of clear liquid sewage water body, the harmless water body in the multistage acidication processing unit of emptying is closed the gate valve on the pipeline of water outlet; Open the submersible pump emptying harmless water body in the outlet sump that catchments, close submersible pump.Open the sealing cover on the top access hole in into water hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; Maintenance and maintenance are implemented in water inlet hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; The cleaning dirt that adheres on the pool wall of outlet sump that catchments; Clean the dirt that adheres on L shaped flow tube, water-in and the water outlet inwall, keep clear, overhaul and safeguard submersible pump.After maintenance and maintenance finish; Close the sealing cover on the top access hole in into water hydrolysis oxidation pond, hydrolysis oxidation pond and water outlet hydrolysis oxidation pond; Open the gate valve on the pipeline of the gate valve water outlet on the pipeline of water-in, start multistage acidication processing unit and resume operation.
Multistage acidication processing unit of the present invention is the anaerobic biological reactor that the hydrolysed filtrate layer is housed; According to the operation after a while of design requirements warp; Pool wall, water-in, L shaped flow tube, water outlet, pipeline and submersible pump in the multistage acidication processing unit all can exist and adhere to dirt; Adhere to dirt and constantly accumulate, thicken, can influence the operation of the WWT of multistage acidication processing unit, need implement maintenance and maintenance multistage acidication processing unit.
After aeration oxygen replenishing processing unit operation for some time, the aeration oxygen replenishing processing unit is implemented maintenance and safeguard, close the gate valve on the pipeline of water-in, stop the inflow of clear liquid sewage water body according to design requirements; Dissolved oxygen water body in the emptying aeration oxygen replenishing processing unit; Close the gate valve on the pipeline of water outlet, remove the dirt that adheres on the pool wall of aeration oxygen replenishing processing unit, clean main pipe and aeration tube; Keep unimpeded, overhaul and safeguard aerator.Gate valve on the pipeline of unlatching water-in; Inject clear liquid sewage water body; Gate valve on the pipeline of unlatching water outlet connects to the water distributor of multistage current wetland processing unit and carries the dissolved oxygen water body, opens aerator; Through main pipe and the clear liquid sewage water body aeration oxygen replenishing of aeration tube in the aeration oxygen replenishing processing unit, the aeration oxygen replenishing processing unit resumes operation.
Aeration oxygen replenishing processing unit of the present invention is the content that will increase the dissolved oxygen in the harmless water body, for the aerobic microbiological of follow-up multistage subsurface flow wetland unit provides oxygen source.According to the operation after a while of design requirements warp; The pool wall of aeration oxygen replenishing processing unit, water-in, water outlet, main pipe, aeration tube and aerator all can exist and adhere to dirt; Along with continuous sequel, the thickening of adhering to dirt; The operation of aeration oxygen replenishing processing unit be can directly influence, need maintenance and maintenance be implemented the aeration oxygen replenishing processing unit.
When decomposing filter layer after operation for some time, multistage current wetland processing unit occurs blocking; Decompose the decomposition reaction that filter layer is decomposed in the obturator influence in the filter layer; Need implement back flushing to decomposing filter layer, close the gate valve on the water distributor, stop to import the dissolved oxygen water body; The discharging water body in the water pipe is received in emptying, closes the gate valve of receiving on the water pipe.Inject the back flushing water source from the back flushing main pipe to counter-flushing pipeline; Filter layer is decomposed in flushing; Decomposing obturator back flushing in the filter layer to intaking wetland pond, 2 component Xie Shenlvshidichi and go out the top in meadow bog pond, the back flushing water source and the obturator that go out the top in meadow bog pond are discharged multistage subsurface flow wetland unit through the back flushing evacuation port on multistage subsurface flow wetland unit top.Stop to inject the back flushing water source to counter-flushing pipeline; Close the back flushing evacuation port; Open into water wetland pond, 2 component Xie Shenlvshidichi and go out the gate valve on the maintenance blow-down pipe in meadow bog pond, from blow-down pipe emptying water inlet wetland pond, 2 component Xie Shenlvshidichi with go out meadow bog pond back flushing water body, close into water wetland pond, 2 component Xie Shenlvshidichi and go out the gate valve on the maintenance blow-down pipe in meadow bog pond; Open the gate valve on the water distributor; Begin to import the dissolved oxygen water body, open the gate valve of receiving on the water pipe, multistage current wetland processing unit resumes operation.
The dissolved oxygen water body that increases dissolved oxygen content from the aeration oxygen replenishing processing unit gets into the processing that multistage current wetland processing unit is implemented aerobic, anaerobism, nitrification and denitrification; According to the operation after a while of design requirements warp; Decompose and produce obturator in the filter layer; The decomposition reaction of filter layer is decomposed in influence, need implement back flushing to multistage current wetland processing unit, cleans and decomposes filter layer.
Behind multistage current wetland processing unit long-play; Need overhaul and safeguard multistage current wetland processing unit by design requirements, close the gate valve on the water distributor, stop into water; The discharge water in the water pipe is received in emptying; Close the gate valve of receiving water pipe, stop water outlet, open into water wetland pond, 2 component Xie Shenlvshidichi and go out the gate valve on the maintenance blow-down pipe in meadow bog pond; From blow-down pipe emptying water inlet wetland pond, 2 component Xie Shenlvshidichi with go out meadow bog pond WWT water body, multistage current wetland processing unit is implemented maintenance and safeguarded.Adhere to dirt on the inwall of clean cloth water pipe, receipts water pipe back flushing connected entrance and back flushing evacuation port, level the kind of plant of decomposing the filter layer upper epidermis.Maintenance finishes, and closes into water wetland pond, 2 component Xie Shenlvshidichi and goes out the gate valve on the maintenance blow-down pipe in meadow bog pond, opens the gate valve on the water distributor, begins water inlet, opens the gate valve of receiving water pipe, the beginning water outlet, and multistage current wetland processing unit resumes operation.
After multistage current wetland processing unit moves for some time, multistage current wetland processing unit is implemented maintenance and maintenance according to the design requirements needs.Adhere to dirt on the inwall of clean cloth water pipe, receipts water pipe back flushing connected entrance and back flushing evacuation port, level the kind of plant of decomposing the filter layer upper epidermis.
The present invention can reach 90.9% to the clearance of suspended substance; Clearance to COD can reach 85%; Clearance to biochemical oxygen demand can reach 90%, can reach 50% to the clearance of total nitrogen, can reach 68% to ammonia-N removal rate; Clearance to total phosphorus can reach 87.5%, sees and removes the pollutants calculation table.
Remove the effect reckoner of pollutent
The present invention is making method and the sewage water treatment method of multistage WWT with bio-reaction system.Design science, rational in infrastructure, reduced investment, the duration is short, instant effect; Rate of load condensate is high, mainly adopts from stream mode, and electromechanical equipment is less, and running cost is low; Sewage disposal expense is low, and floor space is little, and wastewater treatment efficiency is obvious, can directly enter reservoir, river course and lake; Can overcome the relatively more fragile shortcoming of natural wetland, it is strong that nitrogen phosphorus is removed ability, anti impulsion load, during-operation service convenient management; Engineering capital construction and running expense are low, can both carry out purifying treatment throughout the year, and the PQ of hydrolysis filter layer is high, and is less relatively to flow resistance; Most WWTs unit adopts the closed processes mode, and with current downflow, sanitary condition is good on the filler top layer for current, is difficult for producing stink and grows advantage such as mosquitos and flies.Adopt open layout, be convenient to landscape construction, can combine closely,, can play the effect of beautifying the environment simultaneously, improve the view of adjoining area as park green land with urban landscape construction.The present invention adopts the biological and ecological treatment technology that sewage is handled, and electromechanical equipment is less, and the biological and ecological technology has stronger capacity of self-regulation and repair ability, and work-ing life is at least more than 50 years.WWT of the present invention meets discharging standards.
Description of drawings
Below in conjunction with accompanying drawing and embodiment to the detailed description of the invention.
The multistage WWT of Fig. 1 is with the integral layout synoptic diagram of bio-reaction system
The multistage WWT of Fig. 2 is with the integral layout synoptic diagram of bio-reaction system
The multistage WWT of Fig. 3 is with the cross-sectional schematic of the multi stage precipitation pretreatment unit of bio-reaction system
The multistage WWT of Fig. 4 is with the cross-sectional schematic of the multistage acidication processing unit of bio-reaction system
The multistage WWT of Fig. 5 is with the cross-sectional schematic of the aeration oxygen replenishing processing unit of bio-reaction system
The multistage WWT of Fig. 6 is with the cross-sectional schematic of the multistage current wetland processing unit of bio-reaction system
1 multi stage precipitation pretreatment unit, 2 multistage acidication processing units, 3 aeration oxygen-dissolving apparatus, 4 multistage current wetland processing units, 5 outlet sumies that catchment, 6 deposition decomposing pools, 7 fermentation settling tanks; 8 impoundment dedicated, 9 flow tubes, 10 slag removing holes, 11 dirt inlets, 12 water outlets, 13 water-ins; 14 pipelines, 15 access holes, 16L shape flow tube, 17 acidication filtrates, 18 aerators, 19 water distributors; 20 horizontal flow tubes, 21 receive water pipe, 22 blow-down pipes, 23 kind of plant, 24 maintenance blow-down pipes, 25 accumulate the discharging pond; 26 delivery pipes, 27 detect the observation vertical shaft, 28 maintenance emptying control wells, 29 hydrolysed filtrate layers, 30 aeration tubes, 31 submersible pumps; 32 back flushing evacuation ports, 33 dividing plates, 34 main pipes, 35 water inlet wetland ponds, 36 decompose infiltration wetland, and 37 go out the meadow bog pond; 38 decompose filter layer, 39 water inlet hydrolysis oxidation ponds, 40 hydrolysis oxidation ponds, 41 water outlet hydrolysis oxidation ponds, 42 counter-flushing pipelines, 43 back flushing connected entrances.
Embodiment
Embodiment 1
Be connected to form through pipeline 14 by multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2, aeration oxygen replenishing processing unit 3 and multistage current wetland processing unit 4; Water inlet wetland pond 35,2 components of multistage current wetland processing unit 4 are separated infiltration wetland pond 36 and are gone out meadow bog pond 37 and are arranged in order; One side of multistage current wetland processing unit 4 sets gradually multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2 and aeration oxygen replenishing processing unit 3 side by side; And be connected through pipeline 14, as shown in Figure 1.
Embodiment 2
Multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2, aeration oxygen replenishing processing unit 3 and multistage current wetland processing unit 4 are arranged in order setting and are connected through pipeline 14, and be as shown in Figure 2.
Embodiment 3
Multi stage precipitation pretreatment unit 1 is closed box; Casing inner route clapboard 33 is separated at least 3 spaces; Its space respectively is deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8; Each top of space is provided with airtight slag removing hole 10, installs sealing cover on the slag removing hole 10, constitutes airtight running space.
The pool wall top of the deposition decomposing pool 6 of multi stage precipitation pretreatment unit 1 one sides is provided with dirt inlet 11; Dirt inlet 11 is introduced source of sewage through pipeline 14; On the pipeline 14 of dirt inlet 11 gate valve is set, the influx of control source of sewage, source of sewage is sewage and breeding wastewater.Deposition decomposing pool 6 and dividing plate 33 middle parts of fermentation between the settling tank 7 are provided with 9 at least 1 of the flow tubes of inclination; The inlet of the flow tube 9 of deposition decomposing pool 6 is lower than the outlet of the flow tube 9 of fermentation settling tank 7, and the sewage water body of the source of sewage in the deposition decomposing pool 6 after precipitating, decomposing receives the water body action of gravity to flow into fermentation in the fermentation settling tank 7, precipitate from flow tube 9.
Dividing plate 33 middle parts between fermentation settling tank 7 and the impoundment dedicated 8 are provided with the flow tube 9 of inclination; The inlet of the flow tube 9 of fermentation settling tank 7 is lower than the outlet of the flow tube 9 of impoundment dedicated 8, and fermentation settling tank 7 interior sewage water bodys receive the water body action of gravity to flow into separation in the impoundment dedicated 8, deposition from flow tube 9 through fermentation, oettIed sewage liquid again.
The pool wall top of the impoundment dedicated 8 of multi stage precipitation pretreatment unit 1 opposite side sets out the mouth of a river 12; Be connected through the water-in 13 of pipeline 14 with the pool wall bottom of multistage acidication processing unit 2; On the pipeline 14 gate valve is set; The control output flow; Get into impoundment dedicated 8 interior sewage liquid water bodys and import the water-in 13 of multistage acidication processing unit 2 again through the clear liquid water body of fermentation, post precipitation from the water outlet 12 on pool wall top through pipeline 14 gravity flows; The flow of the multistage acidication processing unit 2 of control gate valve control input is set on the pipeline 14; The flow direction that gets into the source of sewage of multi stage precipitation pretreatment unit 1 utilizes the deadweight of water body mobile to water outlet 12 following currents of multi stage precipitation pretreatment unit 1 the other end through flow tube 9 from the dirt inlet 11 of multi stage precipitation pretreatment unit 1 one ends, in process of flowing, implements deposition, fermentation, decomposes, sterilizes and process clear liquid sewage water body, like Fig. 1, Fig. 2, shown in Figure 3.
Embodiment 4
Multistage acidication processing unit 2 is closed box; The pool wall bottom of multistage acidication processing unit 2 one ends is provided with water-in 13; The pool wall top of multistage acidication processing unit 2 the other ends sets out the mouth of a river 12, on the pipeline 14 of water outlet 12 gate valve is set, the control output flow.The casing inner route clapboard 33 of multistage acidication processing unit 2 is separated at least 3 spaces; Its space is followed successively by into water hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; The top in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41 is provided with airtight access hole 15 respectively; Install sealing cover on the access hole 15; On the dividing plate 33 in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41, L shaped flow tube 16 is set; The water-in of L shaped flow tube 16 is higher than the top ends of hydrolysed filtrate layer 29, collects the sewage water body of implementing hydrolysed filtrate through hydrolysed filtrate layer 29, and the water outlet of L shaped flow tube 16 is in the bottom in another spatial hydrolysed filtrate layer 29; Be transported to next hydrolysed filtrate layer to the sewage water body of hydrolysed filtrate, be communicated with water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41.
In water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41, hydrolysed filtrate layer 29 is set; The top ends of hydrolysed filtrate layer 29 is lower than the water-in and the water outlet on the pool wall 12 of L shaped flow tube 16; Fill acidication filtrate 17 in the hydrolysed filtrate layer 29, acidication filtrate 17 adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain.
The flow direction that gets into the clear liquid water body of multistage acidication processing unit 2 utilizes the deadweight of water body to flow to water outlet 12 following currents of multistage acidication processing unit 2 the other ends through L shaped flow tube 16 from the water-in 13 of multistage acidication processing unit 2 one ends, in process of flowing, implement hydrolysis, oxidation, fermentation and process harmless water body.
The outer outlet sump 5 that catchments that is provided with of the pool wall of multistage acidication processing unit 2 the other end; Outlet sump 5 integral body of catchmenting are box-shaped; The outlet sump 5 that catchments is connected with the pool wall of multistage acidication processing unit 2 the other end, and the water outlet 12 of multistage acidication processing unit 2 connects with the outlet sump 5 that catchments, and the pool wall top of the opposite side of the outlet sump 5 that catchments sets out the mouth of a river 12; Outlet sump 5 inner bottom parts that catchment are installed submersible pump 31; Submersible pump 31 passes water outlet 12 through pipeline 14 and promotes the clear liquid water body of hydrolysis oxidation, is transported in the aeration oxygen replenishing processing unit 3, like Fig. 1, Fig. 2, shown in 4.
Embodiment 5
Aeration oxygen replenishing processing unit 3 integral body are box-shaped; On the pool wall of aeration oxygen replenishing processing unit 3 one ends water-in 13 is set; Pipeline 14 on the water-in 13 is provided with gate valve; The flow of control water-in 13, the clear liquid water body of the hydrolysis oxidation in the outlet sump 5 that catchments gets in the aeration oxygen replenishing processing unit 3 from water-in 13 through pipeline 14.
The pool wall top of aeration oxygen replenishing processing unit 3 the other ends is provided with aerator 18; The bottom, pond of aeration oxygen replenishing processing unit 3 is provided with 1 aeration tube 30 at least along the bottom, pond, and aeration tube 30 is connected with main pipe 34, and aerator 18 is connected with main pipe 34 ends; The control gate valve is set on the main pipe 34; The air input of control aeration tube 30, aerator 18 is through main pipe 34 and aeration tube 30 aeration in the pond of aeration oxygen replenishing processing unit 3, and the content that increases dissolved oxygen in the harmless water body is processed the dissolved oxygen water body.
The top of one side of aeration oxygen replenishing processing unit 3 sets out the mouth of a river 12; Pipeline 14 on the water outlet 12 is provided with gate valve; The flow of control water outlet 12; Water distributor 19 through the multistage current wetland processing unit 4 of pipeline 14 and wave is connected, and gravity flow is transported in the multistage current wetland processing unit 4 of wave, like Fig. 1, Fig. 2, shown in Figure 5 through the dissolved oxygen clear liquid water body after the oxygenation.
Embodiment 6
Multistage current wetland processing unit 4 integral body are box-shaped; Be separated at least 4 group current wetland ponds through dividing plate 33; Be arranged in order to water inlet wetland pond 35,2 components and separate infiltration wetland pond 36 and go out meadow bog pond 37, water inlet wetland pond 35 and wherein one component are separated dividing plate 33 are set between the infiltration wetland pond 36, and the top ends of dividing plate 33 is higher than the upper epidermis that decomposes filter layer 38; The bottom of dividing plate 33 is provided with 20 at least 1 of horizontal flow tubes, and the top of dividing plate 33 is provided with 43 at least 1 of back flushing connected entrances.Going out meadow bog pond 37 and another component separates dividing plate 33 is set between the infiltration wetland pond 36; The top ends of dividing plate 33 is higher than the upper epidermis that decomposes filter layer 38; The bottom of dividing plate 33 is provided with 20 at least 1 of horizontal flow tubes, and the top of dividing plate 33 is provided with 43 at least 1 of back flushing connected entrances.2 components are separated dividing plate 33 are set between the infiltration wetland pond 36, and dividing plate 33 is installed in and decomposes in the filter layer 38, and the top ends of dividing plate 33 is lower than decomposes the decomposition filter layer 38 that filter layer 38,2 components separate 36 tops, infiltration wetland pond and be connected.The pool wall top of multistage current wetland processing unit 4 one ends is provided with back flushing evacuation port 32, and back flushing water source and obturator that back flushing evacuation port 32 decomposes filter layer 38 with back flushing are discharged outside the multistage current wetland processing unit 4 together.
The bottom, pond of multistage current wetland processing unit 4 is provided with 42 at least 1 of counter-flushing pipelines; Counter-flushing pipeline 42 is embedded in the bottom that decomposes filter layer 38; Counter-flushing pipeline 42 runs through the bottom, pond that water wetland pond 35,2 components are into separated infiltration wetland pond 36 and gone out meadow bog pond 37; Counter-flushing pipeline 42 is connected with the back flushing main pipe, and the back flushing main pipe is drawn outside the pond, and the back flushing main pipe is export-oriented counter-flushing pipeline 42 input back flushing water sources from the pond.
Respectively in water inlet wetland pond 35, go out meadow bog pond 37 and 2 components and separate and be provided with 1 in the infiltration wetland pond 36 at least and detect and observe vertical shaft 27; Detect observation vertical shaft 27 and run through decomposition filter layer 38; Until the bottom, pond, observe water sampling the well 27 through the water level in the detection observation vertical shaft 27 observation ponds and from detecting.
Be provided with in the current wetland pond and decompose filter layer 38; The gravel of water inlet wetland pond 35 and the decomposition filter layer that goes out meadow bog pond 37 38 employing particle diameter 2-4cm; 2 components are separated infiltration wetland pond 36 and are adopted shale and haydite respectively; Wherein a component is separated the shale of the decomposition filter layer 38 employing particle diameter 4-8cm in infiltration wetland pond 36, and another component is separated the haydite of the decomposition filter layer 38 employing particle diameter 2-4cm in infiltration wetland pond 36.
Decompose the upper surface of filter layer 38 and plant amphibious kind of plant 23; The root system of kind of plant 23 is taken root in decomposing filter layer 38; Kind of plant 23 is reed, wilson iris, cattail, Mitsubishi is spent, deceived to power again; At least plant a kind; The filler matrix that decomposes filter layer 38 is that mikrobe provides and adheres to carrier, and mikrobe forms microbial film at the root system of kind of plant with the filler matrix surface, absorbs the pollutent in the removal water bodys through kind of plant 23; And along with the harvesting of kind of plant 23 is shifted out multistage current wetland processing unit 4 with pollutent, in process of flowing, flow through water wetland pond 35,2 components into of dissolved oxygen water body are separated infiltration wetland pond 36 and are gone out the top layer and the bottom that decompose filter layers 38 in meadow bog pond 37 and process the discharging water body.
The pool wall top of multistage current wetland processing unit 4 one ends is installed along pool wall and is received water pipe 21; Receiving water pipe 21 is installed in the decomposition filter layer 38; An end of receiving water pipe 21 is connected with the water-in 13 of accumulating discharging pond 25; The water outlet end of receiving water pipe 21 is provided with gate valve, the water yield that control is discharged, and receipts water pipe 21 is input to the water bodys of collecting to be accumulated in the discharging pond 25.
The pool wall top of multistage current wetland processing unit 4 the other ends is provided with water distributor 19 along pool wall; Water distributor 19 is installed in and decomposes in the filter layer 38; One end of water distributor 19 is connected with the water outlet 12 of aeration oxygen replenishing processing unit 3; The water inlet end of water distributor 19 is provided with gate valve, and the control flooding quantity is outflow uniformly is spread in the decomposition filter layer 38 in water wetland pond 35 into through the water body behind aeration oxygen replenishing processing unit 3 dissolved oxygens.
Discharging pond 25 is accumulated in one side setting of one end of multistage current wetland processing unit 4; Accumulate discharging pond 25 integral body and be box-shaped; The pool wall of accumulating discharging pond 25 is connected with the pool wall that goes out meadow bog pond 37 of multistage current wetland processing unit 4; On the adjacent pool wall of accumulating discharging pond 25 water-in 13 is set with going out meadow bog pond 37; The water-in 13 of accumulating discharging pond 25 is connected with the receipts water pipe 21 that goes out meadow bog pond 37, accumulates on the pool wall that discharges pond 25 1 ends delivery pipe 26 is set, and is discharged into river course or lake to after treatment discharging water body through delivery pipe 26.
The middle part of multistage current wetland processing unit 4 one sides is provided with maintenance emptying control well 28; Maintenance emptying control well 28 integral body are box-shaped; In the maintenance emptying control well 28 blow-down pipe 22 is set; Blow-down pipe 22 runs through a side borehole wall of maintenance emptying control well 28; 35,2 components are separated infiltration wetland pond 36 and are gone out meadow bog pond 37 1 side bottoms maintenance blow-down pipe 24 is set in the water inlet wetland pond of multistage current wetland processing unit 4; Maintenance blow-down pipe 24 is separated infiltration wetland pond 36 and is gone out meadow bog pond 37 with water inlet wetland pond 35,2 components and connects; Maintenance blow-down pipe 24 is connected with maintenance emptying control well 28 interior blow-down pipes 22 and connects, and the control gate valve is set on the maintenance blow-down pipe 24 constitutes the maintenance blowdown piping, separates infiltration wetland pond 36 and goes out the multistage current wetland processing unit 4 of meadow bog pond 37 maintenance through overhauling blowdown piping emptying water inlet wetland pond 35,2 components.
The flow direction that dissolved oxygen clear liquid water body gets into multistage current wetland processing unit 4 is to get into water inlet wetland pond 35 from water distributor 19; Utilize the deadweight of water body 2 components of flowing through to separate infiltration wetland pond 36 and get into out meadow bog pond 37; Pack up and be input in the discharging impoundment dedicated 25 by receiving water pipe 21; The dissolved oxygen water body is realized processing the discharging water body through the reaction process of aerobic, anaerobism, nitrification and denitrification repeatedly in process of flowing, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 7
Multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2, aeration oxygen replenishing processing unit 3 and multistage current wetland processing unit 4 are through pipeline 14 layout that totally is rectangle that is connected; Adopt open layout to be convenient to landscape construction, arrange according to the actual requirement of engineering design plane.
Multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2 and aeration oxygen replenishing processing unit 3 are set up in parallel and are arranged in a side, and multistage current wetland processing unit 4 is arranged in opposite side and is connected through pipeline 14, and is as shown in Figure 1.
Embodiment 8
Multi stage precipitation pretreatment unit 1, multistage acidication processing unit 2, aeration oxygen replenishing processing unit 3 and multistage current wetland processing unit 4 are arranged in order and are connected through pipeline 14, and be as shown in Figure 2.
Embodiment 9
Multi stage precipitation pretreatment unit 1 integral body is closed box; The concrete one-piece casting; Dividing plate 33 by concrete placement in the casing is separated at least 3 spaces, and its space respectively is deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8, the preset airtight slag removing hole 10 at the top of deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8; Install sealing cover on the slag removing hole 10, multi stage precipitation pretreatment unit 1 constitutes airtight running space.
The pool wall top of the deposition decomposing pool 6 of multi stage precipitation pretreatment unit 1 one sides is provided with the dirt inlet 11 of reservation; Dirt inlet 11 is introduced source of sewage through pipeline; The pool wall top of the impoundment dedicated 8 of multi stage precipitation pretreatment unit 1 opposite side sets out the mouth of a river 12; Be connected through the water-in 13 of pipeline 14, the flow of the multistage acidication processing unit 2 of control gate valve control input is set on the pipeline with the pool wall bottom of multistage acidication processing unit 2.
9 at least 1 of the flow tubes of the preset inclination in dividing plate 33 middle parts between deposition decomposing pool 6 and the fermentation settling tank 7; The inlet of the flow tube 9 of deposition decomposing pool 6 is lower than the outlet of the flow tube 9 of fermentation settling tank 7; The flow tube 9 of the preset inclination in dividing plate 33 middle parts between fermentation settling tank 7 and the impoundment dedicated 8; The inlet of the flow tube 9 of fermentation settling tank 7 is lower than the outlet of the flow tube 9 of impoundment dedicated 8; Source of sewage utilizes focusing on certainly in the multi stage precipitation pretreatment unit 1 of water body mobile to water outlet 12 following currents of the other end by the dirt inlet 11 of an end, in process of flowing, realizes deposition, fermentation, decomposes, sterilizes, like Fig. 1, Fig. 2, shown in Figure 3.
Embodiment 10
Multistage acidication processing unit 2 is closed box; The concrete one-piece casting; Dividing plate 33 by concrete placement in the casing is separated at least 3 spaces; Water-in 13 is preset in the pool wall bottom of multistage acidication processing unit 2 one ends, and water outlet 12 is preset on the pool wall top of the other end, and the casing inner route clapboard 33 of multistage acidication processing unit 2 is separated into into water hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; The preset airtight access hole 15 in top in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41 is installed sealing cover on the access hole 15.
On the dividing plate 33 in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41, install L shaped flow tube 16; The water inlet of L shaped flow tube 16 is in the top of dividing plate 33; The water outlet of L shaped flow tube 16 is in the bottom in another spatial hydrolysed filtrate layer 29, connects the space in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; In water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41, hydrolysed filtrate layer 29 is set; The top ends of hydrolysed filtrate layer 29 is lower than the water-in and the water outlet on the pool wall 12 of L shaped flow tube 16; Fill acidication filtrate 17 in the hydrolysed filtrate layer 29, acidication filtrate 17 adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain.
The outer outlet sump 5 that catchments that is provided with of the pool wall of multistage acidication processing unit 2 the other end; Outlet sump 5 integral body of catchmenting are box-shaped; Outlet sump 5 integral body of catchmenting are built by laying bricks or stones; The outlet sump 5 that catchments is connected with the pool wall end of multistage acidication processing unit 2 the other ends, and the water outlet 13 of multistage acidication processing unit 2 connects with the outlet sump 5 that catchments, and outlet sump 5 inner bottom parts that catchment are installed submersible pump 31; Submersible pump 31 passes water outlet 12 through pipeline 14 and is transported to the clear liquid water body of hydrolysis oxidation in the aeration oxygen replenishing processing unit 3, like Fig. 1, Fig. 2, shown in Figure 4.
Embodiment 11
Aeration oxygen replenishing processing unit 3 integral body are box-shaped; The concrete one-piece casting; Preset water-in 13 on the pool wall of aeration oxygen replenishing processing unit 3 one ends, the harmless water body of the hydrolysis oxidation in the outlet sump 5 that catchments gets in the aeration oxygen replenishing processing unit 3 from water-in 13 through pipeline 14.
Aerator 18 is installed on the pool wall top of aeration oxygen replenishing processing unit 3 the other ends; The bottom, pond of aeration oxygen replenishing processing unit 3 is provided with 1 aeration tube 30 at least along the bottom, pond, and aeration tube 30 is connected with main pipe 34, and aerator 18 is connected with main pipe 34 ends; The control gate valve is set on the main pipe 34; The air input of control aeration tube 30, aerator 18 increase the content of dissolved oxygen in the harmless water body through main pipe 34 and aeration tube 30 aeration in the pond of aeration oxygen replenishing processing unit 3.
Water outlet 12 is preset on the top of one side of aeration oxygen replenishing processing unit 3; Be connected with the water distributor 19 of multistage current wetland processing unit 4 through pipeline 14; Gravity flow is transported in the multistage current wetland processing unit 4 through the dissolved oxygen clear liquid water body after the oxygenation, like Fig. 1, Fig. 2, shown in Figure 5.
Embodiment 12
Multistage current wetland processing unit 4 integral body are box-shaped; The concrete one-piece casting; Be separated at least 4 group current wetland ponds through dividing plate 33; Be arranged in order to water inlet wetland pond 35,2 components and separate infiltration wetland pond 36 and go out meadow bog pond 37, water inlet wetland pond 35,2 components are separated infiltration wetland pond 36 and are gone out to be provided with respectively in the meadow bog pond 37 and decompose filter layer 38, and water inlet wetland pond 35 and wherein one component are separated preset dividing plate 33 between the infiltration wetland pond 36; The top ends of dividing plate 33 is higher than decomposes filter layer 38; The bottom of dividing plate 33 is provided with 20 at least 1 of horizontal flow tubes, and 43 at least 1 of back flushing connected entrances are installed on the top of dividing plate 33, and back flushing connected entrance 43 is higher than the upper epidermis that decomposes filter layer 38.
Go out meadow bog pond 37 and another component and separate preset dividing plate 33 between the infiltration wetland pond 36; The top ends of dividing plate 33 is higher than decomposes filter layer 38; The bottom of dividing plate 33 is provided with 20 at least 1 of horizontal flow tubes; 43 at least 1 of back flushing connected entrances are installed on the top of dividing plate 33, and back flushing connected entrance 43 is higher than the upper epidermis that decomposes filter layer 38.
2 components are separated dividing plate 33 are set between the infiltration wetland pond 36, and dividing plate 33 is installed in and decomposes in the filter layer 38, and the top ends of dividing plate 33 is lower than decomposes the decomposition filter layer 38 that filter layer 38,2 components separate 36 tops, infiltration wetland pond and be connected.Back flushing evacuation port 32 is installed on the pool wall top of multistage current wetland processing unit 4 one ends, discharges together outside the multistage current wetland processing unit 4 from back flushing water source and obturator that back flushing evacuation port 32 decomposes filter layer 38 with back flushing.
42 at least 1 of counter-flushing pipelines are laid in bottom, pond at multistage current wetland processing unit 4; Counter-flushing pipeline 42 is laid on the bottom that decomposes filter layer 38; Counter-flushing pipeline 42 runs through the bottom, pond of multistage current wetland processing unit 4; Be connected counter-flushing pipeline 42 with the back flushing main pipe, the back flushing main pipe is drawn outside the pond, and export-oriented counter-flushing pipeline 42 injects the back flushing water source to the back flushing main pipe from the pond.
In water inlet wetland pond 35, go out meadow bog pond 37 and 2 components and separate and dispose 1 in the infiltration wetland pond 36 at least respectively and detect and observe vertical shaft 27, detect and observe vertical shaft 27 and run through and decompose filter layer 38, until the bottom, pond.
The gravel of water inlet wetland pond 35 and the decomposition filter layer that goes out meadow bog pond 37 38 employing particle diameter 2-4cm; The decomposition filter layer 38 that the wherein component that 2 components are separated infiltration wetland pond 36 is separated infiltration wetland pond 36 adopts the shale of particle diameter 4-8cm, and the decomposition filter layer 38 that another component is separated infiltration wetland pond 36 adopts the haydite of particle diameter 2-4cm.
Upper surface decomposing filter layer 38 is planted amphibious kind of plant 23, and the root system of kind of plant 23 is taken root in decomposing filter layer 38, and kind of plant 23 is reed, wilson iris, cattail, power is spent, deceived Mitsubishi again, plants a kind at least.
The pool wall top of multistage current wetland processing unit 4 one ends is along the preset water pipe 21 of receiving of pool wall; Receiving water pipe 21 is installed in the decomposition filter layer 38; An end of receiving water pipe 21 is connected with the water-in 13 of accumulating discharging pond 25, and the water bodys of receiving 21 collections of water pipe are input to be accumulated in the discharging pond 25.
The pool wall top of multistage current wetland processing unit 4 the other ends is along the preset water distributor 19 of pool wall, and water distributor 19 is installed in and decomposes in the filter layer 38, and an end of water distributor 19 is connected with the water outlet 12 of aeration oxygen replenishing processing unit 3, like Fig. 1, Fig. 2, shown in Figure 5.
Embodiment 13
Discharging pond 25 is accumulated in one side setting of one end of multistage current wetland processing unit 4; Accumulate discharging pond 25 integral body and be box-shaped, accumulate discharging pond 25 integral body and build by laying bricks or stones, the pool wall of accumulating discharging pond 25 is connected with the pool wall that goes out meadow bog pond 37; Accumulate on the pool wall that discharges pond 25 water-in 13 is set; The water-in 13 of accumulating discharging pond 25 is connected with the receipts water pipe 21 that goes out meadow bog pond 37, accumulates on the pool wall that discharges pond 25 1 ends delivery pipe 26 is set, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 14
The middle part of multistage current wetland processing unit 4 one sides is provided with maintenance emptying control well 28; Maintenance emptying control well 28 integral body are box-shaped; Maintenance emptying control well 28 integral body are built by laying bricks or stones, in the maintenance emptying control well 28 blow-down pipe 39 are set, and blow-down pipe 39 runs through a side borehole wall of maintenance emptying control well 28; The preset maintenance of side bottom blow-down pipe 24 at multistage current wetland processing unit 4; Maintenance blow-down pipe 24 is connected with maintenance emptying control well 28 interior blow-down pipes 39 and connects, and the control gate valve is set on the maintenance blow-down pipe 24 constitutes the maintenance blowdown piping, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 15
Source of sewage gets in the deposition decomposing pool 6 through the dirt inlet 11 of pipeline from the deposition decomposing pool 6 of multi stage precipitation pretreatment unit 1; Carrying a certain amount of suspended substance, swimmer and silt in the source of sewage secretly; The proportion of source of sewage impurities is different, and source of sewage gets into scum silica frost, the sewage water body in middle level and the sediment of sinking that deposition decomposing pool 6 backs form come-up, the airtight formation anaerobic environment of deposition decomposing pool 6; The albumen organic matter that source of sewage contains decomposes through anaerobically fermenting; And produce material such as ammonia, and kill parasitic ovum and germ, realize deposition, decompose, fermentation, sterilization WWT; Because the middle level sewage water body in the effect of the water body gravity deposition decomposing pool 6 gets into flow tube 9 from the inlet of the flow tube 9 that is arranged on partition wall 33 middle parts, from the outlet that is higher than flow tube 9 from flowing in the fermentation settling tank 7.
The sewage water body that gets in the fermentation settling tank 7 further ferments, precipitates; Fermentation settling tank 7 reduces with the quantity that deposition decomposing pool 6 is compared scum silica frost and suspended substance relatively; The sewage water body is in the comparison stationary state; Fermentation and the degree of decomposing are lower; The scum silica frost and the suspended substance that help in the sewage water body continue to realize fermentation, decompose and deposition, the sewage water body again through fermentation, post precipitation because the sewage liquid of effect fermentation settling tank 7 mesonexines of water body gravity gets into flow tube 9 from the inlet of the flow tube 9 that is arranged on partition wall 33 middle parts, from the outlet that is higher than flow tube 9 from flowing in the impoundment dedicated 8.
Sewage liquid in the entering impoundment dedicated 8 further separate and precipitate; Be stored in impoundment dedicated 8 interior sewage liquid middle levels with supernatant; Remaining scum silica frost and suspended substance sink at the bottom of the pond; Along with sewage liquid constantly gets into impoundment dedicated 8, the water level of the sewage liquid of impoundment dedicated 8 also constantly raises, and the supernatant liquid of sewage liquid flows automatically to multistage hydrolysis oxidation unit 2 from the water outlet 12 that is installed in pool wall top through pipeline 14; Get in the multistage hydrolysis oxidation unit 2 from the water-in 13 of the pool wall bottom of multistage hydrolysis oxidation unit 2; Source of sewage through the multiple-stage treatment of multi stage precipitation pretreatment unit 1 scum, suspended substance and sediment, kill parasitic ovum, pathogenic micro-organism and bacterium through fermentation, decomposition, deposition and storage, reached innoxious design requirements; The sewage clear liquid is processed in 1 pre-treatment of source of sewage process multi stage precipitation pretreatment unit, and the sewage clear liquid gets into multistage acidication processing unit 2.
Multistage acidication processing unit 2 is separated at least 3 spaces by dividing plate 33; Be divided into into water hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; The L shaped water pipe 16 of crossing is installed on the top of dividing plate 33; Install hydrolysed filtrate layer 29 in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and the water outlet hydrolysis oxidation pond 41, the microbial population of the surface attachment microbial film form growth of the acidication filtrate 17 of hydrolysed filtrate layer 29.
The sewage clear liquid gets into hydrolysed filtrate layer 29 bottom in water inlet hydrolysis oxidation pond 39 from the water-in 13 of multistage acidication processing unit 2 bottoms; In the hydrolysed filtrate layer 29 along with the continuous inflow water inlet hydrolysis oxidation pond 39 of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer 29; The water level of sewage clear liquid covers the into hydrolysed filtrate layer 29 in water hydrolysis oxidation pond 39; Rise to the into top in water hydrolysis oxidation pond 39; Reach the water outlet of the L shaped flow tube 16 that is installed in dividing plate 33 tops, behind the hydrolysis oxidation of sewage clear liquid through the hydrolysed filtrate layer 29 in water inlet hydrolysis oxidation pond 39, get into the bottom of the hydrolysed filtrate layer 29 in hydrolysis oxidation pond 40 from water inlet hydrolysis oxidation pond 39 through L shaped flow tube 16.
In the hydrolysed filtrate layer 29 along with the hydrolysis oxidation pond 40 that continues to flow of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer 29; The water level of sewage clear liquid covers the hydrolysed filtrate layer 29 in hydrolysis oxidation pond 40; Rise to the top in hydrolysis oxidation pond 40; Reach the water outlet of the L shaped flow tube 16 that is installed in dividing plate 33 tops, after the sewage clear liquid passes through the hydrolysis oxidation of hydrolysed filtrate layer 29 in hydrolysis oxidation pond 40 once more, through L shaped flow tube 16 from the hydrolysis oxidation pond 40 get into the hydrolysed filtrate layer 29 in water outlet hydrolysis oxidation ponds 41 the bottom.
In the hydrolysed filtrate layer 29 along with the continuous inflow water outlet hydrolysis oxidation pond 41 of sewage clear liquid; The water level of sewage clear liquid constantly promotes in the hydrolysed filtrate layer 29, and the water level of sewage clear liquid covers the hydrolysed filtrate layer 29 in water outlet hydrolysis oxidation pond 41, rises to the top in water outlet hydrolysis oxidation pond 41; Reach the water outlet 12 on the pool wall top that is installed in multistage acidication processing unit 2; After the sewage clear liquid passed through the hydrolysis oxidation of hydrolysed filtrate layer 29 in water outlet hydrolysis oxidation pond 41 again, the water outlet 12 through pool wall top got into the outlet sump 5 that catchments, and the sewage clear liquid is through the hydrolysed filtrate layer 29 of multistage acidication processing unit 2; The microbial population of the surface attachment of acidication filtrate 17 is held back in the process of hydrolysed filtrate layer 29 of flowing through, absorption and metabolism decompose the organism in the sewage clear liquid; Simultaneously, the closing anaerobic environment that multistage acidication processing unit 2 forms is implemented anaerobically fermenting to the albumen organic matter; The decomposition of protein organic matter also produces materials such as ammonia; Play the effect of killing parasitic ovum and germ, macromolecule organic is degraded to low molecule organic matter, organonitrogen is degraded to inorganic nitrogen, organic phosphorus degrading is an inorganic phosphorus; Help the quick degraded of follow-up multistage current wetland processing unit 4, improve wetland and handle removal efficient pollutent.
The sewage clear liquid is handled through the hydrolysis oxidation of multistage acidication processing unit 2 and is processed harmless water body; Harmless water body is accumulated in the outlet sump 5 that catchments; Along with constantly accumulating of harmless water body, the submersible pump 31 that is installed in the outlet sump 5 that catchments is transported to harmless water body lifting in the aeration oxygen replenishing processing unit 3 through pipeline 14.
Harmless water body enters in the aeration oxygen replenishing processing unit 3 from the water-in 13 of aeration oxygen replenishing processing unit 3; The aerator 18 of aeration oxygen replenishing processing unit 3 is implemented the aeration oxygen replenishing processing through 30 pairs of harmless water bodys of main pipe 34 and aeration tube and is processed the dissolved oxygen water body; It is the dissolved oxygen content in the harmless water body that harmless water body is implemented the aeration oxygen replenishing processing, for the aerobic microbiologicals in the multistage current wetland processing unit 4 provide oxygen source.
Continuous increase along with dissolved oxygen water body in the aeration oxygen replenishing processing unit 3; The dissolved oxygen water body flows into the water distributor 19 of multistage current wetland processing unit 4 certainly through pipeline 14 from water outlet 12; Water distributor 19 is spread in the dissolved oxygen water body in the decomposition filter layer 38 in water inlet wetland pond 35 of multistage current wetland processing unit 4 uniformly; Along with the water body action of gravity of dissolved oxygen water body is full of the into decomposition filter layer 38 in water wetland pond 35; Water level in the water inlet wetland pond 35 constantly raises; The dissolved oxygen water body gets into wherein a component from the horizontal flow tube of dividing plate 33 bottoms 20 and separates the bottom in the infiltration wetland pond 36, and the dissolved oxygen water body constantly pours in wherein a component and separates infiltration wetland pond 36 and be full of another component and separate infiltration wetland pond 36.
The dissolved oxygen water body is full of wherein a component and separates the decomposition filter layer 38 in infiltration wetland pond 36; Wherein the water levels separated in the infiltration wetland pond 36 of a component constantly raise; Along with the water level of dissolved oxygen water body raises and covers the top of dividing plate 33; The dissolved oxygen water body gets into another component and separates infiltration wetland pond 36 from dividing plate 33 tops, the continuous inflow of dissolved oxygen water body is full of the decomposition filter layer 38 that another component is separated infiltration wetland pond 36, and the water level that another component is separated in the infiltration wetland pond 36 constantly raises; Along with the water body action of gravity of the dissolved oxygen water body horizontal flow tube 20 from dividing plate 33 bottoms gets into out in the decomposition filter layer 38 in meadow bog pond 37; The dissolved oxygen water body constantly pours in out the decomposition filter layer 38 in meadow bog pond 37 and is full of meadow bog pond 37, and the water level that goes out in the meadow bog pond 37 constantly raises, and reaches the position of receipts water pipe 21 along with the water level rising of dissolved oxygen water body.
The dissolved oxygen water body gets into multistage current wetland processing unit 4; The decomposition filter layer 38 that water wetland pond 35,2 components into of flowing through are separated infiltration wetland pond 36 and gone out meadow bog pond 37 forms awave flowing; Water inlet wetland pond 35,2 components are separated infiltration wetland pond 36 and are gone out decomposition filter layer 38 formation " matrix--plant--mikrobe " ecosystems in meadow bog pond 37, and the root system of kind of plant is taken root in the top layer of decomposing filter layer 38, and the filler matrix that decomposes filter layer 38 is that mikrobe provides the carrier that adheres to; The root system of kind of plant is that mikrobe provides oxygen source; Filler matrix layer near the root district forms aerobic zone, and away from the filler matrix layer formation anaerobic zone or the aerobic area in root district, the dissolved oxygen water body is flowed through in process of flowing and decomposed the top layer and the bottom of filter layer 38; Pass through the reaction process of aerobic, anaerobism, nitrification and denitrification repeatedly; Implement efficient organic pollutant and the nitrogen phosphorus of removing in the dissolved oxygen water body and process the discharging water body, discharge the water body income and receive in the water pipe 21, the discharging water body is accumulated from receiving in the water pipe 21 entering discharging impoundment dedicated 25; Be discharged into river course or lake by delivery pipe 26 again, like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6.
Embodiment 16
When the dissolved oxygen water body in multistage current wetland processing unit 4 in the operational process; Whether reach design requirements through detect observing the running condition that vertical shaft 27 observation water inlet wetland ponds 35,2 components separate infiltration wetland pond 36 and go out meadow bog pond 37; From detect to observe vertical shaft 27, extracting water sample detects water quality and whether reaches design requirements; In time regulate the gate valve on the water distributor 19, the control flooding quantity suppresses to decompose the flow velocity in the filter layer 38; Adjustment is decomposed filter layer 38 and is in best decomposing state, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 17
When the dissolved oxygen water body in multistage current wetland processing unit 4 in the operational process; Whether reach design requirements through detect observing the running condition that vertical shaft 27 observation water inlet wetland ponds 35,2 components separate infiltration wetland pond 36 and go out meadow bog pond 37; From detect to observe vertical shaft 27, extracting water sample detects water quality and whether reaches design requirements; In time regulate the gate valve on the water distributor 19, the control flooding quantity suppresses to decompose the flow velocity in the filter layer 38; Adjustment is decomposed filter layer 38 and is in best decomposing state, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 18
Bottom settlings in multi stage precipitation pretreatment unit 1 operation for some time postprecipitation decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8 sediment; Need implement scarfing cinder, desilting to deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8 according to design requirements; Close the gate valve on the pipeline 14 of dirt inlet 11; Stop the inflow of source of sewage, close the gate valve on the pipeline 14 of water outlet 12, stop the outflow of the source of sewage after the WWT.Open the sealing cover of deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8 top slag removing holes 10; Sediment and mud in scavenger precipitation decomposing pool 6, fermentation settling tank 7 and the impoundment dedicated 8; Remove the dirt that adheres on flow tube 9, dirt inlet 11 and water outlet 12 inwalls, keep unimpeded.Close the sealing cover of deposition decomposing pool 6, fermentation settling tank 7 and impoundment dedicated 8 top slag removing holes 10; Open the gate valve on the pipeline 14 of gate valve and water outlet 12 on the pipeline 14 of dirt inlet 11; Start multi stage precipitation pretreatment unit 1 and resume operation, like Fig. 1, Fig. 2, shown in Figure 3.
Embodiment 19
When multistage acidication processing unit was implemented to overhaul and safeguard to water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40, water outlet hydrolysis oxidation pond 41 and the outlet sump 5 that catchments according to design requirements after 2 operation for some time; Close the gate valve on the pipeline 14 of water-in 13; Stop the inflow of clear liquid sewage water body; Harmless water body in the multistage acidication processing unit 2 of emptying; Close the gate valve on the pipeline 14 of water outlet 12, open the submersible pump 31 emptyings harmless water body in the outlet sump 5 that catchments, close submersible pump 31.Open the sealing cover on the top access hole 15 in into water hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; Maintenance and maintenance are implemented in water inlet hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; The cleaning dirt that adheres on the pool wall of outlet sump 5 that catchments; Clean the dirt that adheres on L shaped flow tube 16, water-in 13 and water outlet 12 inwalls, keep clear, overhaul and safeguard submersible pump 31.After maintenance and maintenance finish; Close the sealing cover on the top access hole 15 in into water hydrolysis oxidation pond 39, hydrolysis oxidation pond 40 and water outlet hydrolysis oxidation pond 41; Open the gate valve on the pipeline 14 of the gate valve water outlet 12 on the pipeline 14 of water-in 13; Start multistage acidication processing unit 2 and resume operation, like Fig. 1, Fig. 2, shown in Figure 4.
Embodiment 20
According to design requirements aeration oxygen replenishing processing unit 3 is implemented maintenance after operation for some time and safeguard when aeration oxygen replenishing processing unit 3, close the gate valve on the pipeline 14 of water-in 13, stop the inflow of clear liquid sewage water body; Dissolved oxygen water body in the emptying aeration oxygen replenishing processing unit 3; Close the gate valve on the pipeline 14 of water outlet 12, remove the dirt that adheres on the pool wall of aeration oxygen replenishing processing unit 3, clean main pipe 34 and aeration tube 30; Keep unimpeded, overhaul and safeguard aerator 18.Gate valve on the pipeline 14 of unlatching water-in 13; Inject clear liquid sewage water body, the gate valve on the pipeline 14 of unlatching water outlet 12 connects to the water distributor 19 of multistage current wetland processing unit 4 and carries the dissolved oxygen water bodys; Open aerator 18; Through main pipe 34 and the clear liquid sewage water body aeration oxygen replenishing of aeration tube 30 in aeration oxygen replenishing processing unit 3, aeration oxygen replenishing processing unit 3 resumes operation, like Fig. 1, Fig. 2, shown in Figure 5.
Embodiment 21
When decomposing filter layer 38 after 4 operation for some time, multistage current wetland processing unit occurs blocking; Decompose the decomposition reaction that filter layer 38 is decomposed in the obturator influence in the filter layer 38; Need implement back flushing to decomposing filter layer 38, close the gate valve on the water distributor 19, stop to import the dissolved oxygen water body; The discharging water body in the water pipe 21 is received in emptying, closes the gate valve of receiving on the water pipe 21.Inject the back flushing water source from the back flushing main pipe to counter-flushing pipeline 42; Filter layer 38 is decomposed in flushing; Decompose obturator back flushing in the filter layer 38 to water inlet wetland pond 35,2 components separate infiltration wetland pond 36 and go out the top in meadow bog pond 37, go out back flushing water source and the obturator multistage subsurface flow wetland unit 4 of back flushing evacuation port 32 discharges through multistage subsurface flow wetland unit 4 tops at the top in meadow bog pond 37.Stop to inject the back flushing water source to counter-flushing pipeline 42; Close back flushing evacuation port 32, open water wetland pond 35,2 components into and separate infiltration wetland pond 36 and go out the gate valve on the maintenance blow-down pipe 24 in meadow bog pond 37,35,2 components are separated infiltration wetland pond 36 and are gone out meadow bog pond 37 back flushing water bodys from blow-down pipe 22 emptying water inlet wetland pond; Closing water wetland pond 35,2 components into separates infiltration wetland pond 36 and goes out the gate valve on the maintenance blow-down pipe 24 in meadow bog pond 37; Open the gate valve on the water distributor 19, begin to import the dissolved oxygen water body, open the gate valve of receiving on the water pipe 21; Multistage current wetland processing unit 4 resumes operation, like Fig. 1, Fig. 2, shown in Figure 6.
Embodiment 22
Behind multistage current wetland processing unit 4 long-plays; Need overhaul and safeguard multistage current wetland processing unit 4 by design requirements, close the gate valve on the water distributor 19, stop into water; The discharge water in the water pipe 26 is received in emptying; Close the gate valve of receiving water pipe 26, stop water outlet, open water wetland pond 35,2 components into and separate infiltration wetland pond 36 and go out the gate valve on the maintenance blow-down pipe 24 in meadow bog pond 37; 35,2 components are separated infiltration wetland pond 36 and are gone out meadow bog pond 37 WWT water bodys from blow-down pipe 22 emptying water inlet wetland pond, and multistage current wetland processing unit 4 is implemented maintenance and maintenance.Adhere to dirt on the inwall of clean cloth water pipe 19, receipts water pipe 21 back flushing connected entrances 43 and back flushing evacuation port 32, level the kind of plant of decomposing filter layer 38 upper epidermiss.Maintenance finishes; Close water wetland pond 35,2 components into and separate infiltration wetland pond 36 and go out the gate valve on the maintenance blow-down pipe 24 in meadow bog pond 37, open the gate valve on the water distributor 19, begin water inlet; Open the gate valve of receiving water pipe 26; The beginning water outlet, multistage current wetland processing unit 4 resumes operation, like Fig. 1, Fig. 2, shown in Figure 6.

Claims (2)

1. a multistage WWT is with the making method of bio-reaction system; It is characterized in that this multistage WWT is connected to form through pipeline (14) by multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2), aeration oxygen replenishing processing unit (3) and multistage current wetland processing unit (4) with bio-reaction system; The water inlet wetland pond (35) of multistage current wetland processing unit (4), 2 component Xie Shenlvshidichi (36) and go out meadow bog pond (37) and be arranged in order; One side of multistage current wetland processing unit (4) sets gradually multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2) and aeration oxygen replenishing processing unit (3) side by side; And be connected through pipeline (14), perhaps multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2), aeration oxygen replenishing processing unit (3) and multistage current wetland processing unit (4) are arranged in order and are provided with and are connected through pipeline (14);
Multi stage precipitation pretreatment unit (1) is closed box; Casing inner route clapboard (33) is separated at least 3 spaces; Its space respectively is deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8); Each top of space is provided with airtight slag removing hole (10), and slag removing hole is installed sealing cover on (10), constitutes airtight running space; The pool wall top of the deposition decomposing pool (6) of multi stage precipitation pretreatment unit (1) one side is provided with dirt inlet (11); Dirt inlet (11) is introduced source of sewage through pipeline (14); On the pipeline (14) of dirt inlet (11) gate valve is set; The influx of control source of sewage, source of sewage is sewage and breeding wastewater; (9) at least 1 of the flow tubes of inclination are set in the middle part of the dividing plate (33) between deposition decomposing pool (6) and fermentation settling tank (7); The inlet of the flow tube (9) of deposition decomposing pool (6) is lower than the outlet of the flow tube (9) of fermentation settling tank (7), and the sewage water body of the source of sewage in the deposition decomposing pool (6) after precipitating, decomposing receives the water body action of gravity to flow into fermentation in the fermentation settling tank (7), precipitate from flow tube (9); Dividing plate (33) middle part between fermentation settling tank (7) and the impoundment dedicated (8) is provided with the flow tube (9) of inclination; The inlet of the flow tube (9) of fermentation settling tank (7) is lower than the outlet of the flow tube (9) of impoundment dedicated (8), and the interior sewage water body of fermentation settling tank (7) receives the water body action of gravity to flow into separation in the impoundment dedicated (8), deposition from flow tube (9) through fermentation, oettIed sewage liquid again; The pool wall top of the impoundment dedicated (8) of multi stage precipitation pretreatment unit (1) opposite side sets out the mouth of a river (12); Be connected with the water-in (13) of the pool wall bottom of multistage acidication processing unit (2) through pipeline (14); Pipeline is provided with gate valve on (14); The control output flow; Get into the interior sewage liquid water body of impoundment dedicated (8) and import the water-in (13) of multistage acidication processing unit (2) again through the clear liquid water body of fermentation, post precipitation from the water outlet (12) on pool wall top through pipeline (14) gravity flow; Pipeline is provided with the control gate valve on (14); The flow of the control multistage acidication processing unit of input (2); The flow direction that gets into the source of sewage of multi stage precipitation pretreatment unit (1) utilizes the deadweight of water body mobile to water outlet (12) following current of multi stage precipitation pretreatment unit (1) the other end through flow tube (9) from the dirt inlet (11) of multi stage precipitation pretreatment unit (1) one end, in process of flowing, implements deposition, fermentation, decomposes, sterilizes and process clear liquid sewage water body;
Multistage acidication processing unit (2) is closed box; The pool wall bottom of multistage acidication processing unit (2) one ends is provided with water-in (13); The pool wall top of multistage acidication processing unit (2) the other end sets out the mouth of a river (12); On the pipeline (14) of water outlet (12) gate valve is set, the control output flow; The casing inner route clapboard (33) of multistage acidication processing unit (2) is separated at least 3 spaces; Its space is followed successively by into water hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); The top in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41) is provided with airtight access hole (15) respectively; Access hole is installed sealing cover on (15); On the dividing plate (33) in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), L shaped flow tube (16) is set; The water-in of L shaped flow tube (16) is higher than the top ends of hydrolysed filtrate layer (29); Collect the sewage water body of implementing hydrolysed filtrate through hydrolysed filtrate layer (29); The water outlet of L shaped flow tube (16) is in the bottom in another spatial hydrolysed filtrate layer (29), is transported to next hydrolysed filtrate layer to the sewage water body of hydrolysed filtrate, is communicated with water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); In water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), hydrolysed filtrate layer (29) is set; The top ends of hydrolysed filtrate layer (29) is lower than the water-in and the water outlet on the pool wall (12) of L shaped flow tube (16); Fill acidication filtrate (17) in the hydrolysed filtrate layer (29), acidication filtrate (17) adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain; The flow direction that gets into the clear liquid water body of multistage acidication processing unit (2) utilizes the deadweight of water body to flow to water outlet (12) following current of multistage acidication processing unit (2) the other end through L shaped flow tube (16) from the water-in (13) of multistage acidication processing unit (2) one ends, in process of flowing, implement hydrolysis, oxidation, fermentation and process harmless water body; The outer outlet sump (5) that catchments that is provided with of the pool wall of multistage acidication processing unit (2) the other end; Outlet sump (5) integral body of catchmenting is box-shaped; The outlet sump (5) that catchments is connected with the pool wall of multistage acidication processing unit (2) the other end; The water outlet (12) of multistage acidication processing unit (2) connects with the outlet sump (5) that catchments; The catchment pool wall top of opposite side of outlet sump (5) sets out the mouth of a river (12), and the outlet sump that catchments (5) inner bottom part is installed submersible pump (31), and submersible pump (31) passes water outlet (12) through pipeline (14) and is transported to the clear liquid water body of hydrolysis oxidation in the aeration oxygen replenishing processing unit (3);
Aeration oxygen replenishing processing unit (3) integral body is box-shaped; Water-in (13) is set on the pool wall of aeration oxygen replenishing processing unit (3) one ends; Pipeline (14) on the water-in (13) is provided with gate valve; The flow of control water-in (13), the clear liquid water body of the hydrolysis oxidation in the outlet sump that catchments (5) gets in the aeration oxygen replenishing processing unit (3) from water-in (13) through pipeline (14); The pool wall top of aeration oxygen replenishing processing unit (3) the other end is provided with aerator (18); The bottom, pond of aeration oxygen replenishing processing unit (3) is provided with 1 aeration tube (30) at least along the bottom, pond; Aeration tube (30) is connected with main pipe (34); Aerator (18) is connected with main pipe (34) end, and main pipe is provided with the control gate valve on (34), the air input of control aeration tube (30); Aerator (18) is through main pipe (34) and aeration tube (30) aeration in the pond of aeration oxygen replenishing processing unit (3), and the content that increases dissolved oxygen in the clear liquid water body is processed the dissolved oxygen water body; The top of one side of aeration oxygen replenishing processing unit (3) sets out the mouth of a river (12); Pipeline (14) on the water outlet (12) is provided with gate valve; The flow of control water outlet (12); Water distributor (19) through the multistage current wetland processing unit of pipeline (14) and wave (4) is connected, and gravity flow is transported in the multistage current wetland processing unit of wave (4) through the dissolved oxygen clear liquid water body after the oxygenation;
Multistage current wetland processing unit (4) integral body is box-shaped; Be separated at least 4 group current wetland ponds through dividing plate (33); Be arranged in order and be water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out meadow bog pond (37); The water inlet wetland pond (35) with wherein between the component Xie Shenlvshidichi (36) dividing plate (33) is set, the top ends of dividing plate (33) be higher than the decomposition filter layer (38) upper epidermis, the bottom of dividing plate (33) is provided with (20) at least 1 of horizontal flow tubes; The top of dividing plate (33) is provided with (43) at least 1 of back flushing connected entrances, and back flushing connected entrance (43) is higher than the top layer of decomposing filter layer (38); Go out between meadow bog pond (37) and another component Xie Shenlvshidichi (36) dividing plate (33) is set; The top ends of dividing plate (33) is higher than the upper epidermis that decomposes filter layer (38); The bottom of dividing plate (33) is provided with (20) at least 1 of horizontal flow tubes; The top of dividing plate (33) is provided with (43) at least 1 of back flushing connected entrances, and back flushing connected entrance (43) is higher than the top layer of decomposing filter layer (38); Between the 2 component Xie Shenlvshidichi (36) dividing plate (33) is set; Dividing plate (33) is installed in and decomposes in the filter layer (38); The top ends of dividing plate (33) is lower than decomposes filter layer (38), and the decomposition filter layer (38) on 2 component Xie Shenlvshidichi (36) tops is connected; The pool wall top of multistage current wetland processing unit (4) one ends is provided with back flushing evacuation port (32), and back flushing water source and obturator that back flushing evacuation port (32) decomposes filter layer (38) with back flushing are discharged outside the multistage current wetland processing unit (4) together; The bottom, pond of multistage current wetland processing unit (4) is provided with (42) at least 1 of counter-flushing pipelines; Counter-flushing pipeline (42) is embedded in the bottom that decomposes filter layer (38); Counter-flushing pipeline (42) runs through into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and goes out the bottom, pond in meadow bog pond (37); Counter-flushing pipeline (42) is connected with the back flushing main pipe; The back flushing main pipe is drawn outside the pond, and export-oriented counter-flushing pipeline (42) injects the obturator that filter layer is decomposed in the flushing of back flushing water source to the back flushing main pipe from the pond; Respectively in water inlet wetland pond (35), go out to be provided with at least in meadow bog pond (37) and the 2 component Xie Shenlvshidichi (36) 1 and detect observation vertical shaft (27); Detect observation vertical shaft (27) and run through decomposition filter layer (38); Until the bottom, pond, observe water sampling the well (27) through the water level in detection observation vertical shaft (27) the observation pond and from detecting;
Be provided with in the current wetland pond and decompose filter layer (38); The gravel of water inlet wetland pond (35) and decomposition filter layer (38) the employing particle diameter 2-4cm that goes out meadow bog pond (37); 2 component Xie Shenlvshidichi (36) adopt shale and haydite respectively; Wherein the decomposition filter layer (38) of a component Xie Shenlvshidichi (36) adopts the shale of particle diameter 4-8cm, and the decomposition filter layer (38) of another component Xie Shenlvshidichi (36) adopts the haydite of particle diameter 2-4cm; Decompose the upper surface of filter layer (38) and plant amphibious kind of plant (23); The root system of kind of plant (23) is taken root in decomposing filter layer (38); Kind of plant (23) is reed, wilson iris, cattail, Mitsubishi is spent, deceived to power again; At least plant a kind; The filler matrix that decomposes filter layer (38) is that mikrobe provides and adheres to carrier, and mikrobe forms microbial film at the root system of kind of plant with the filler matrix surface, absorbs the pollutent in the removal water body through kind of plant (23); And along with the harvesting of kind of plant (23) is shifted out multistage current wetland processing unit (4) with pollutent, the dissolved oxygen water body is flowed through into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and gone out the decomposition filter layer (38) in meadow bog pond (37) in process of flowing top layer and bottom are processed the discharging water body;
The pool wall top of multistage current wetland processing unit (4) one ends is installed along pool wall and is received water pipe (21); Receiving water pipe (21) is installed in the decomposition filter layer (38); An end of receiving water pipe (21) is connected with the water-in (13) of accumulating discharging pond (25); The water outlet end of receiving water pipe (21) is provided with gate valve, the water yield that control is discharged, and receipts water pipes (21) are input to the water body of collecting to be accumulated in the discharging pond (25); The pool wall top of multistage current wetland processing unit (4) the other end is provided with water distributor (19) along pool wall; Water distributor (19) is installed in and decomposes in the filter layer (38); One end of water distributor (19) is connected with the water outlet (12) of aeration oxygen replenishing processing unit (3); The water inlet end of water distributor (19) is provided with gate valve, and the control flooding quantity is outflow uniformly is spread in the decomposition filter layer (38) of into water wetland pond (35) through the water body behind aeration oxygen replenishing processing unit (3) dissolved oxygen;
Discharging pond (25) is accumulated in one side setting of one end of multistage current wetland processing unit (4); Accumulate discharging pond (25) integral body and be box-shaped; The pool wall of accumulating discharging pond (25) is connected with the pool wall that goes out meadow bog pond (37) of multistage current wetland processing unit (4); With go out meadow bog pond (37) adjacent accumulate the discharging pond (25) pool wall on water-in (13) is set; The water-in (13) of accumulating discharging pond (25) is connected with the receipts water pipe (21) that goes out meadow bog pond (37), accumulates on the pool wall that discharges pond (25) one ends delivery pipe (26) is set, and is discharged into river course or lake to after treatment water body through delivery pipe (26);
The middle part of multistage current wetland processing unit (4) one sides is provided with maintenance emptying control well (28); Maintenance emptying control well (28) integral body is box-shaped; In the maintenance emptying control well (28) blow-down pipe (22) is set; Blow-down pipe (22) runs through a side borehole wall of maintenance emptying control well (28); At water inlet wetland pond (35), the 2 component Xie Shenlvshidichi (36) of multistage current wetland processing unit (4) with go out meadow bog pond (37) one side bottoms maintenance blow-down pipe (24) is set; Overhaul blow-down pipe (24) and water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out meadow bog pond (37) and connect; Maintenance blow-down pipe (24) is connected with the interior blow-down pipe (22) of maintenance emptying control well (28) and connects; The control gate valve is set on the maintenance blow-down pipe (24) constitutes the maintenance blowdown piping, through overhauling blowdown piping emptying water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) and going out meadow bog pond (37) maintenance multistage current wetland processing unit (4); The flow direction that dissolved oxygen clear liquid water body gets into multistage current wetland processing unit (4) is to get into water inlet wetland pond (35) from water distributor (19); Utilize the deadweight of the water body 2 component Xie Shenlvshidichi (36) that flow through to get into out meadow bog pond (37); Pack up and be input in the discharging impoundment dedicated (25) by receiving water pipes (21), that the dissolved oxygen water body is realized passing through repeatedly in process of flowing is aerobic, the reaction process of anaerobism, nitrification and denitrification is processed the discharging water body;
Making multistage WWT is through pipeline (14) layout that totally is rectangle that is connected by multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2), aeration oxygen replenishing processing unit (3) and multistage current wetland processing unit (4) with the method for bio-reaction system; Adopt open layout to be convenient to landscape construction, arrange according to the actual requirement of engineering design plane; Multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2) and aeration oxygen replenishing processing unit (3) are set up in parallel and are arranged in a side; Multistage current wetland processing unit (4) is arranged in opposite side and is connected through pipeline (14), and perhaps multi stage precipitation pretreatment unit (1), multistage acidication processing unit (2), aeration oxygen replenishing processing unit (3) and multistage current wetland processing unit (4) are arranged in order and are connected through pipeline (14);
Multi stage precipitation pretreatment unit (1) integral body is closed box; The concrete one-piece casting; Dividing plate (33) by concrete placement in the casing is separated at least 3 spaces; Its space respectively is deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8); The preset airtight slag removing hole (10) at the top of deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8), slag removing hole is installed sealing cover on (10), and multi stage precipitation pretreatment unit (1) constitutes airtight running space; The pool wall top of the deposition decomposing pool (6) of multi stage precipitation pretreatment unit (1) one side is provided with the dirt inlet (11) of reservation; Dirt inlet (11) is introduced source of sewage through pipeline; The pool wall top of the impoundment dedicated (8) of multi stage precipitation pretreatment unit (1) opposite side sets out the mouth of a river (12); Be connected with the water-in (13) of the pool wall bottom of multistage acidication processing unit (2) through pipeline (14), the flow of the control gate valve control multistage acidication processing unit of input (2) is set on the pipeline; (9) at least 1 of the flow tubes of the preset inclination in dividing plate (33) middle part between deposition decomposing pool (6) and the fermentation settling tank (7); The inlet of the flow tube (9) of deposition decomposing pool (6) is lower than the outlet of the flow tube (9) of fermentation settling tank (7); The flow tube (9) of the preset inclination in dividing plate (33) middle part between fermentation settling tank (7) and the impoundment dedicated (8); The inlet of the flow tube (9) of fermentation settling tank (7) is lower than the outlet of the flow tube (9) of impoundment dedicated (8); Source of sewage utilizes focusing on certainly in the multi stage precipitation pretreatment unit (1) of water body mobile to water outlet (12) following current of the other end by the dirt inlet (11) of an end, in process of flowing, realizes deposition, fermentation, decomposes, sterilizes;
Multistage acidication processing unit (2) is closed box; The concrete one-piece casting; Dividing plate (33) by concrete placement in the casing is separated at least 3 spaces; Water-in (13) is preset in the pool wall bottom of multistage acidication processing unit (2) one ends; Water outlet (12) is preset on the pool wall top of the other end; The casing inner route clapboard (33) of multistage acidication processing unit (2) is separated into into water hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), the preset airtight access hole (15) in the top in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), and access hole is installed sealing cover on (15); On the dividing plate (33) in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), install L shaped flow tube (16); The water inlet of L shaped flow tube (16) is in the top of dividing plate (33); The water outlet of L shaped flow tube (16) is in the bottom in another spatial hydrolysed filtrate layer (29), connects the space in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); In water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41), hydrolysed filtrate layer (29) is set; The top ends of hydrolysed filtrate layer (29) is lower than the water-in and the water outlet on the pool wall (12) of L shaped flow tube (16); Fill acidication filtrate (17) in the hydrolysed filtrate layer (29), acidication filtrate (17) adopts haydite or the polyethylene elastomer of particle diameter 1-2cm to fill out grain; The outer outlet sump (5) that catchments that is provided with of the pool wall of multistage acidication processing unit (2) the other end; Outlet sump (5) integral body of catchmenting is box-shaped; Outlet sump (5) integral body of catchmenting is built by laying bricks or stones; The outlet sump (5) that catchments is connected with the pool wall end of multistage acidication processing unit (2) the other end, and the water outlet (13) of multistage acidication processing unit (2) connects with the outlet sump (5) that catchments, and the outlet sump that catchments (5) inner bottom part is installed submersible pump (31); Submersible pump (31) passes water outlet (12) through pipeline (14) and promotes the clear liquid water body of hydrolysis oxidation, is transported in the aeration oxygen replenishing processing unit (3);
Aeration oxygen replenishing processing unit (3) integral body is box-shaped; The concrete one-piece casting; Preset water-in (13) on the pool wall of aeration oxygen replenishing processing unit (3) one ends, the harmless water body of the hydrolysis oxidation in the outlet sump that catchments (5) gets in the aeration oxygen replenishing processing unit (3) from water-in (13) through pipeline (14); Aerator (18) is installed on the pool wall top of aeration oxygen replenishing processing unit (3) the other end; The bottom, pond of aeration oxygen replenishing processing unit (3) is provided with 1 aeration tube (30) at least along the bottom, pond; Aeration tube (30) is connected with main pipe (34); Aerator (18) is connected with main pipe (34) end, and main pipe is provided with the control gate valve on (34), the air input of control aeration tube (30); Aerator (18) increases the content of dissolved oxygen in the clear liquid water body through main pipe (34) and aeration tube (30) aeration in the pond of aeration oxygen replenishing processing unit (3); Water outlet (12) is preset on the top of one side of aeration oxygen replenishing processing unit (3); Be connected with the water distributor (19) of multistage current wetland processing unit (4) through pipeline (14), gravity flow is transported in the multistage current wetland processing unit (4) through the dissolved oxygen clear liquid water body after the oxygenation;
Multistage current wetland processing unit (4) integral body is box-shaped; The concrete one-piece casting; Be separated at least 4 group current wetland ponds through dividing plate (33); Be arranged in order for water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) with go out meadow bog pond (37), water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) decompose filter layer (38) with going out to be provided with respectively in the meadow bog pond (37), wetland pond (35) and wherein preset dividing plate (33) between the component Xie Shenlvshidichi (36) intakes; The top ends of dividing plate (33) is higher than decomposes filter layer (38); The bottom of dividing plate (33) is provided with (20) at least 1 of horizontal flow tubes, and (43) at least 1 of back flushing connected entrances are installed on the top of dividing plate (33), and back flushing connected entrance (43) is higher than the upper epidermis that decomposes filter layer (38); Go out preset dividing plate (33) between meadow bog pond (37) and another component Xie Shenlvshidichi (36); The top ends of dividing plate (33) is higher than decomposes filter layer (38); The bottom of dividing plate (33) is provided with (20) at least 1 of horizontal flow tubes; (43) at least 1 of back flushing connected entrances are installed on the top of dividing plate (33), and back flushing connected entrance (43) is higher than the upper epidermis that decomposes filter layer (38); Between the 2 component Xie Shenlvshidichi (36) dividing plate (33) is set; Dividing plate (33) is installed in and decomposes in the filter layer (38); The top ends of dividing plate (33) is lower than decomposes filter layer (38), and the decomposition filter layer (38) on 2 component Xie Shenlvshidichi (36) tops is connected; Back flushing evacuation port (32) is installed on the pool wall top of multistage current wetland processing unit (4) one ends, discharges together outside the multistage current wetland processing unit (4) from back flushing water source and obturator that back flushing evacuation port (32) decomposes filter layer (38) with back flushing;
(42) at least 1 of counter-flushing pipelines are laid in bottom, pond at multistage current wetland processing unit (4); Counter-flushing pipeline (42) is laid on the bottom that decomposes filter layer (38); Counter-flushing pipeline (42) runs through the bottom, pond of multistage current wetland processing unit (4); Be connected counter-flushing pipeline (42) with the back flushing main pipe, the back flushing main pipe is drawn outside the pond, and export-oriented counter-flushing pipeline (42) injects the back flushing water source to the back flushing main pipe from the pond;
In water inlet wetland pond (35), go out to be provided with at least respectively in meadow bog pond (37) and the 2 component Xie Shenlvshidichi (36) 1 and detect to observe vertical shaft (27), detect and observe vertical shaft (27) and run through and decompose filter layer (38), bottom the pond; The gravel of water inlet wetland pond (35) and decomposition filter layer (38) the employing particle diameter 2-4cm that goes out meadow bog pond (37); The decomposition filter layer (38) of the wherein component Xie Shenlvshidichi (36) of 2 component Xie Shenlvshidichi (36) adopts the shale of particle diameter 4-8cm, and the decomposition filter layer (38) of another component Xie Shenlvshidichi (36) adopts the haydite of particle diameter 2-4cm; Upper surface decomposing filter layer (38) is planted amphibious kind of plant (23); The root system of kind of plant (23) is taken root in decomposing filter layer (38); Kind of plant (23) is reed, wilson iris, cattail, power is spent, deceived Mitsubishi again, plants a kind at least;
The pool wall top of multistage current wetland processing unit (4) one ends is along the preset water pipe (21) of receiving of pool wall; Receiving water pipe (21) is installed in the decomposition filter layer (38); An end of receiving water pipe (21) is connected with the water-in (13) of accumulating discharging pond (25), and receipts water pipes (21) are input to the water body of collecting to be accumulated in the discharging pond (25); The pool wall top of multistage current wetland processing unit (4) the other end is along the preset water distributor (19) of pool wall; Water distributor (19) is installed in and decomposes in the filter layer (38), and an end of water distributor (19) is connected with the water outlet (12) of aeration oxygen replenishing processing unit (3);
Discharging pond (25) is accumulated in one side setting of one end of multistage current wetland processing unit (4); Accumulate discharging pond (25) integral body and be box-shaped; Accumulating discharging pond (25) integral body builds by laying bricks or stones; The pool wall of accumulating discharging pond (25) is connected with the pool wall that goes out meadow bog pond (37); Accumulate on the pool wall in discharging pond (25) water-in (13) is set, the water-in (13) of accumulating discharging pond (25) is connected with the receipts water pipe (21) that goes out meadow bog pond (37), accumulates on the pool wall that discharges pond (25) one ends delivery pipe (26) is set;
The middle part of multistage current wetland processing unit (4) one sides is provided with maintenance emptying control well (28); Maintenance emptying control well (28) integral body is box-shaped; Maintenance emptying control well (28) integral body is built by laying bricks or stones; In the maintenance emptying control well (28) blow-down pipe (39) is set, blow-down pipe (39) runs through a side borehole wall of maintenance emptying control well (28), at the preset maintenance of the side bottom blow-down pipe (24) of multistage current wetland processing unit (4); Maintenance blow-down pipe (24) is connected with the interior blow-down pipe (39) of maintenance emptying control well (28) and connects, and the control gate valve is set on the maintenance blow-down pipe (24) constitutes the maintenance blowdown piping.
2. multistage WWT according to claim 1 is with the multistage WWT of the making method of the bio-reaction system sewage water treatment method with bio-reaction system; It is characterized in that described source of sewage gets in the deposition decomposing pool (6) through the dirt inlet (11) of pipeline from the deposition decomposing pool (6) of multi stage precipitation pretreatment unit (1); Carrying a certain amount of suspended substance, swimmer and silt in the source of sewage secretly; The proportion of source of sewage impurities is different; Source of sewage gets into scum silica frost, the sewage water body in middle level and the sediment of sinking that deposition decomposing pool (6) back forms come-up; The airtight formation anaerobic environment of deposition decomposing pool (6), the albumen organic matter that source of sewage contains decomposes through anaerobically fermenting, and produces material such as ammonia; Kill parasitic ovum and germ; Realize deposition, decompose, fermentation, sterilization WWT because the middle level sewage water body in the effect of the water body gravity deposition decomposing pool (6) gets into flow tube (9) from the inlet of the flow tube (9) that is arranged on partition wall (33) middle part, from the outlet that is higher than flow tube (9) from flowing in the fermentation settling tank (7);
The sewage water body that gets in the fermentation settling tank (7) further ferments, precipitates; Fermentation settling tank (7) reduces with the quantity that deposition decomposing pool (6) is compared scum silica frost and suspended substance relatively; The sewage water body is in the comparison stationary state; Fermentation and the degree of decomposing are lower; The scum silica frost and the suspended substance that help in the sewage water body continue to realize fermentation, decompose and deposition, the sewage water body again through fermentation, post precipitation because the sewage liquid of effect fermentation settling tank (7) mesonexine of water body gravity gets into flow tube (9) from the inlet of the flow tube (9) that is arranged on partition wall (33) middle part, from the outlet that is higher than flow tube (9) from flowing in the impoundment dedicated (8);
Sewage liquid in the entering impoundment dedicated (8) further separates and precipitates; Be stored in the interior sewage liquid of impoundment dedicated (8) middle level with supernatant; Remaining scum silica frost and suspended substance sink at the bottom of the pond; Along with sewage liquid constantly gets into impoundment dedicated (8), the water level of the sewage liquid of impoundment dedicated (8) also constantly raises, and the supernatant liquid of sewage liquid flows automatically to multistage hydrolysis oxidation unit (2) from the water outlet (12) that is installed in pool wall top through pipeline (14); Get in the multistage hydrolysis oxidation unit (2) from the water-in (13) of the pool wall bottom of multistage hydrolysis oxidation unit (2); Source of sewage through the multiple-stage treatment of multi stage precipitation pretreatment unit (1) scum, suspended substance and sediment, kill parasitic ovum, pathogenic micro-organism and bacterium through fermentation, decomposition, deposition and storage, reached innoxious design requirements; The sewage clear liquid is processed in the pre-treatment of source of sewage process multi stage precipitation pretreatment unit (1), and the sewage clear liquid gets into multistage acidication processing unit (2);
Multistage acidication processing unit (2) is separated at least 3 spaces by dividing plate (33); Be divided into into water hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); The L shaped water pipe (16) of crossing is installed on the top of dividing plate (33); Water inlet is installed hydrolysed filtrate layer (29) in hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and the water outlet hydrolysis oxidation pond (41), the microbial population of the surface attachment microbial film form growth of the acidication filtrate (17) in the hydrolysed filtrate layer (29); The sewage clear liquid gets into hydrolysed filtrate layer (29) bottom in water inlet hydrolysis oxidation pond (39) from the water-in (13) of multistage acidication processing unit (2) bottom; In the hydrolysed filtrate layer (29) along with the continuous inflow water inlet hydrolysis oxidation pond (39) of sewage clear liquid; The water level of the interior sewage clear liquid of hydrolysed filtrate layer (29) constantly promotes; The water level of sewage clear liquid covers the into hydrolysed filtrate layer (29) of water hydrolysis oxidation pond (39); Rise to the into top of water hydrolysis oxidation pond (39); Reach the water outlet of the L shaped flow tube (16) that is installed in dividing plate (33) top, behind the hydrolysis oxidation of sewage clear liquid through the hydrolysed filtrate layer (29) in water inlet hydrolysis oxidation pond (39), get into the bottom of the hydrolysed filtrate layer (29) in hydrolysis oxidation pond (40) from water inlet hydrolysis oxidation pond (39) through L shaped flow tube (16);
In the hydrolysed filtrate layer (29) along with the hydrolysis oxidation pond (40) that continues to flow of sewage clear liquid; The water level of the interior sewage clear liquid of hydrolysed filtrate layer (29) constantly promotes; The water level of sewage clear liquid covers the hydrolysed filtrate layer (29) in hydrolysis oxidation pond (40); Rise to the top of hydrolysis oxidation pond (40); Reach the water outlet of the L shaped flow tube (16) that is installed in dividing plate (33) top, after the sewage clear liquid passes through the hydrolysis oxidation of hydrolysed filtrate layer (29) in hydrolysis oxidation pond (40) once more, get into the bottom of the hydrolysed filtrate layer (29) in water outlet hydrolysis oxidation ponds (41) from hydrolysis oxidation pond (40) through L shaped flow tube (16);
In the hydrolysed filtrate layer (29) along with the continuous inflow water outlet hydrolysis oxidation pond (41) of sewage clear liquid; The water level of the interior sewage clear liquid of hydrolysed filtrate layer (29) constantly promotes; The water level of sewage clear liquid covers the hydrolysed filtrate layer (29) in water outlet hydrolysis oxidation pond (41); Rise to the top in water outlet hydrolysis oxidation pond (41), reach the water outlet (12) on the pool wall top that is installed in multistage acidication processing unit (2), after the sewage clear liquid passes through the hydrolysis oxidation of hydrolysed filtrate layer (29) in water outlet hydrolysis oxidation pond (41) again; Water outlet (12) through pool wall top gets into the outlet sump (5) that catchments; The hydrolysed filtrate layer (29) of sewage clear liquid through multistage acidication processing unit (2), the microbial population of the surface attachment of acidication filtrate (17) is held back in the process of hydrolysed filtrate layer (29) of flowing through, absorption and metabolism decompose the organism in the sewage clear liquid, simultaneously; The closing anaerobic environment that multistage acidication processing unit (2) forms; The albumen organic matter is implemented anaerobically fermenting, and the decomposition of protein organic matter also produces material such as ammonia, plays the effect of killing parasitic ovum and germ; Macromolecule organic is degraded to low molecule organic matter; Organonitrogen is degraded to inorganic nitrogen, organic phosphorus degrading is an inorganic phosphorus, helps the quick degraded of follow-up multistage current wetland processing unit (4), improves wetland and handles the removal efficient to pollutent;
The sewage clear liquid is handled through the hydrolysis oxidation of multistage acidication processing unit (2) and is processed harmless water body; Harmless water body is accumulated in the outlet sump that catchments (5); Along with constantly accumulating of harmless water body, the submersible pump (31) that is installed in the outlet sump that catchments (5) is transported to harmless water body lifting in the aeration oxygen replenishing processing unit (3) through pipeline (14); Harmless water body enters in the aeration oxygen replenishing processing unit (3) from the water-in (13) of aeration oxygen replenishing processing unit (3); The aerator (18) of aeration oxygen replenishing processing unit (3) is implemented the aeration oxygen replenishing processing through main pipe (34) and aeration tube (30) to harmless water body and is processed the dissolved oxygen water body; It is the dissolved oxygen content in the harmless water body that harmless water body is implemented the aeration oxygen replenishing processing, for the aerobic microbiological in the multistage current wetland processing unit (4) provides oxygen source;
Continuous increase along with the interior dissolved oxygen water body of aeration oxygen replenishing processing unit (3); The dissolved oxygen water body flows into the water distributor (19) of multistage current wetland processing unit (4) certainly through pipeline (14) from water outlet (12); Water distributor (19) is spread in the dissolved oxygen water body in the decomposition filter layer (38) in water inlet wetland pond (35) of multistage current wetland processing unit (4) uniformly; Along with the water body action of gravity of dissolved oxygen water body is full of the into decomposition filter layer (38) of water wetland pond (35); Water level in the water inlet wetland pond (35) constantly raises; The dissolved oxygen water body gets into the bottom in the component Xie Shenlvshidichi (36) wherein from the horizontal flow tube (20) of dividing plate (33) bottom, and the dissolved oxygen water body constantly pours in wherein a component Xie Shenlvshidichi (36) and is full of another component Xie Shenlvshidichi (36); The dissolved oxygen water body is full of the wherein decomposition filter layer (38) of a component Xie Shenlvshidichi (36); Wherein the water level in the component Xie Shenlvshidichi (36) constantly raises; Along with the water level of dissolved oxygen water body raises and covers the top of dividing plate (33); The dissolved oxygen water body gets into another component Xie Shenlvshidichi (36) from dividing plate (33) top; The continuous inflow of dissolved oxygen water body is full of the decomposition filter layer (38) of another component Xie Shenlvshidichi (36); Water level in another component Xie Shenlvshidichi (36) constantly raises, and along with the water body action of gravity of the dissolved oxygen water body horizontal flow tube (20) from dividing plate (33) bottom gets into out in the decomposition filter layer (38) in meadow bog pond (37), the dissolved oxygen water body constantly pours in out the decomposition filter layer (38) in meadow bog pond (37) and is full of meadow bog pond (37); The water level that goes out in the meadow bog pond (37) constantly raises, and reaches the position of receipts water pipes (21) along with the water level rising of dissolved oxygen water body; The dissolved oxygen water body gets into multistage current wetland processing unit (4); The decomposition filter layer (38) of flowing through into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and going out meadow bog pond (37) forms awave flowing; Water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) and decomposition filter layer (38) formation " matrix--plant--mikrobe " ecosystem that goes out meadow bog pond (37); The root system of kind of plant is taken root in the top layer of decomposing filter layer (38); The filler matrix that decomposes filter layer (38) is that mikrobe provides the carrier that adheres to; The root system of kind of plant is that mikrobe provides oxygen source, forms aerobic zone at the filler matrix layer near the root district, away from the filler matrix layer formation anaerobic zone or the aerobic area in root district; The dissolved oxygen water body is flowed through in process of flowing and is decomposed the top layer and the bottom of filter layer (38); Pass through the reaction process of aerobic, anaerobism, nitrification and denitrification repeatedly, implement efficient organic pollutant and the nitrogen phosphorus of removing in the dissolved oxygen water body and process the discharging water body, in the discharging water body income receipts water pipes (21); The discharging water body is accumulated from receiving in water pipe (21) the entering discharging impoundment dedicated (25), is discharged into river course or lake by delivery pipe (26) again;
When the dissolved oxygen water body in multistage current wetland processing unit (4) in the operational process; Whether reach design requirements through detecting the running condition of observing vertical shaft (27) observation water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) and going out meadow bog pond (37); The extraction water sample detects water quality and whether reaches design requirements from detect to observe vertical shaft (27); In time regulate the gate valve on the water distributor (19); The control flooding quantity suppresses to decompose the flow velocity in the filter layer (38), and adjustment is decomposed filter layer (38) and is in best decomposing state;
Bottom settlings in multi stage precipitation pretreatment unit (1) operation for some time postprecipitation decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8) sediment; Need implement scarfing cinder, desilting to deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8) according to design requirements; Close the gate valve on the pipeline (14) of dirt inlet (11); Stop the inflow of source of sewage; Close the gate valve on the pipeline (14) of water outlet (12), stop the outflow of the source of sewage after the WWT; Open the sealing cover of deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8) top slag removing hole (10); Sediment and mud in scavenger precipitation decomposing pool (6), fermentation settling tank (7) and the impoundment dedicated (8); Remove the dirt that adheres on flow tube (9), dirt inlet (11) and water outlet (12) inwall, keep unimpeded; Close the sealing cover of deposition decomposing pool (6), fermentation settling tank (7) and impoundment dedicated (8) top slag removing hole (10); Open the gate valve on the pipeline (14) of gate valve and water outlet (12) on the pipeline (14) of dirt inlet (11), start multi stage precipitation pretreatment unit (1) and resume operation;
When multistage acidication processing unit (2) was implemented to overhaul and safeguard to water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40), water outlet hydrolysis oxidation pond (41) and the outlet sump that catchments (5) according to design requirements after operation for some time; Close the gate valve on the pipeline (14) of water-in (13); Stop the inflow of clear liquid sewage water body; Harmless water body in the multistage acidication processing unit of emptying (2); Close the gate valve on the pipeline (14) of water outlet (12), open submersible pump (31) the emptying harmless water body in the outlet sump (5) that catchments, close submersible pump (31); Open the sealing cover on the top access hole (15) in into water hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); Maintenance and maintenance are implemented in water inlet hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); The cleaning dirt that adheres on the pool wall of outlet sump (5) that catchments; Clean the dirt that adheres on L shaped flow tube (16), water-in (13) and water outlet (12) inwall; Keep clear, overhaul and safeguard submersible pump (31); After maintenance and maintenance finish; Close the sealing cover on the top access hole (15) in into water hydrolysis oxidation pond (39), hydrolysis oxidation pond (40) and water outlet hydrolysis oxidation pond (41); Open the gate valve on the pipeline (14) of the gate valve water outlet (12) on the pipeline (14) of water-in (13), start multistage acidication processing unit (2) and resume operation;
When aeration oxygen replenishing processing unit (3) is implemented maintenance and maintenance according to design requirements to aeration oxygen replenishing processing unit (3) after operation for some time; Close the gate valve on the pipeline (14) of water-in (13); Stop the inflow of clear liquid sewage water body, the dissolved oxygen water body in the emptying aeration oxygen replenishing processing unit (3) is closed the gate valve on the pipeline (14) of water outlet (12); Remove the dirt that adheres on the pool wall of aeration oxygen replenishing processing unit (3); Clean main pipe (34) and aeration tube (30), keep unimpeded, overhaul and safeguard aerator (18); Gate valve on the pipeline (14) of unlatching water-in (13); Inject clear liquid sewage water body; Gate valve on the pipeline (14) of unlatching water outlet (12) connects to the water distributor (19) of multistage current wetland processing unit (4) and carries the dissolved oxygen water body, opens aerator (18); Through main pipe (34) and the clear liquid sewage water body aeration oxygen replenishing of aeration tube (30) in aeration oxygen replenishing processing unit (3), aeration oxygen replenishing processing unit (3) resumes operation;
When decomposing filter layer (38) after operation for some time, multistage current wetland processing unit (4) occurs blocking; Decompose the decomposition reaction that filter layer (38) is decomposed in the obturator influence in the filter layer (38); Need implement back flushing to decomposing filter layer (38), close the gate valve on the water distributor (19), stop to import the dissolved oxygen water body; The discharging water body in the water pipe (21) is received in emptying, closes the gate valve of receiving on the water pipe (21); Inject the back flushing water source from the back flushing main pipe to counter-flushing pipeline (42); Filter layer (38) is decomposed in flushing; Decomposing obturator back flushing in the filter layer (38) to intaking wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out the top of meadow bog pond (37); Back flushing water source and obturator at water inlet top, wetland pond (35) flows into 2 component Xie Shenlvshidichi (36) through back flushing connected entrance (43) top; Flow into out the top of meadow bog pond (37) at the back flushing water source at the top of 2 component Xie Shenlvshidichi (36) and obturator through back flushing connected entrance (43), the back flushing water source and the obturator that go out the top in meadow bog pond (37) are discharged multistage subsurface flow wetland unit (4) through the back flushing evacuation port (32) on multistage subsurface flow wetland unit (4) top; Stop to inject the back flushing water source to counter-flushing pipeline (42); Close back flushing evacuation port (32); Open into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out the gate valve on the maintenance blow-down pipe (24) in meadow bog pond (37); From blow-down pipe (22) emptying water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) with go out meadow bog pond (37) back flushing water body; Close into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out the gate valve on the maintenance blow-down pipe (24) in meadow bog pond (37), open the gate valve on the water distributor (19), begin to import the dissolved oxygen water body; Open the gate valve of receiving on the water pipe (21), multistage current wetland processing unit (4) resumes operation;
Behind multistage current wetland processing unit (4) long-play; Need overhaul and safeguard multistage current wetland processing unit (4) by design requirements; Close the gate valve on the water distributor (19); Stop into water, the discharge water in the water pipe (26) is received in emptying, closes the gate valve of receiving water pipe (26); Stop water outlet; Open into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out the gate valve on the maintenance blow-down pipe (24) in meadow bog pond (37), from blow-down pipe (22) emptying water inlet wetland pond (35), 2 component Xie Shenlvshidichi (36) with go out meadow bog pond (37) WWT water body, multistage current wetland processing unit (4) is implemented maintenance and maintenance; Adhere to dirt on the inwall of clean cloth water pipe (19), receipts water pipe (21) back flushing connected entrance (43) and back flushing evacuation port (32), level the kind of plant of decomposing filter layer (38) upper epidermis; Maintenance finishes; Close into water wetland pond (35), 2 component Xie Shenlvshidichi (36) and go out the gate valve on the maintenance blow-down pipe (24) in meadow bog pond (37); Open the gate valve on the water distributor (19), begin water inlet, open the gate valve of receiving water pipe (26); The beginning water outlet, multistage current wetland processing unit (4) resumes operation.
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