CN103395930A - Ecological slope protection type sewage land infiltration system and ecological slope protection type sewage land infiltration method - Google Patents

Ecological slope protection type sewage land infiltration system and ecological slope protection type sewage land infiltration method Download PDF

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CN103395930A
CN103395930A CN2013103280705A CN201310328070A CN103395930A CN 103395930 A CN103395930 A CN 103395930A CN 2013103280705 A CN2013103280705 A CN 2013103280705A CN 201310328070 A CN201310328070 A CN 201310328070A CN 103395930 A CN103395930 A CN 103395930A
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China
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water
land
infiltration
bank protection
water outlet
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CN2013103280705A
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Chinese (zh)
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胡将军
余芃飞
霍子平
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武汉大学
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Abstract

The invention relates to an ecological slope protection type sewage land infiltration system which comprises a grid pond (2), an anaerobic hydrolyzing pond (4) and a stepped land infiltration unit which are sequentially arranged along the gradient of a sloping field from top to bottom, wherein the grid pond (2) is communicated with a ditch (1); the stepped land infiltration unit comprises multilevel slope protection infiltration beds (5); filter materials (7) are filled in the slope protection infiltration beds (5); hygrophyte communities (9) are cultivated on the slope protection infiltration beds (5); a modal conversion assembly (6) used for controlling infiltration speed, waterpower retention time, a filtering layer internal environment and an effluent water mode is arranged between adjacent slope protection infiltration beds (5). The ecological slope protection type sewage land infiltration system disclosed by the invention tolerates the rural sewage quality water flow impact, is difficult to block due to high reaeration capacity, intensifies the denitrification and dephosphorization effect, is green, energy-saving, economic and practicable and has excellent water conservancy and ecology value.

Description

A kind of ecological revetment formula polluted water land filtration system and diafiltration method thereof
Technical field
The present invention relates to technical field of sewage, specifically a kind of ecological revetment formula polluted water land filtration system and diafiltration method thereof that is applied to Rural Plane Source Pollution control with the sewage disposal that sewage focuses on or other are suitable in knob and mountain area.
Background technology
China carries out the concentrated improvement of sewage point-source pollution since the eighties in 20th century, through the development and improvement of 30 years, the sewage point-source pollution of China obtained basic controlling so far, especially in city and manufacturing district.Yet relative, since nearly ten years, the rivers and lakes water quality of China is still more undesirable, has expended a large amount of financial resources manpowers for the improvement of each polluted water body and has but still loseed lasting obvious effect, and its basic reason just is the weakness that pollution of area source is controlled.
China agricultural district accounts for more than 8% of area, and multidigit is in more flourishing zone, the water system network of rivers, these network of rivers water system basin scopes have accounted for 35% left and right of area, the country that belongs to many mountains due to China, have in agricultural district more than 50% and all be positioned at hills and mountain area,, in case this area's pollution of area source enters the upstream water system by farmland drainage, rainfall runoff in a large number, will certainly be diffused into rapidly the whole area, basin.And in the Agricultural Activities of China, use present stage of nitrogen and phosphorus fertilizer still lacks the guidance of science, although China's cultivated area only accounts for 10% of the whole world, the nitrogen phosphorus fertilizer usage quantity accounts for the whole world 30%.Irrigation, rainfall and rainwash can be taken away a large amount of small-particles, water-soluble nutrient substance, various pathogenic micro-organism and rubbish; carried and enter nutritive substance that rainwash enters various water bodys then and not only aggravated the nutrient loss of water and soil by current; also can cause serious body eutrophication; from the Dian Chi that is located in land plateau to Dongting Lake, the Poyang Lake of plains region, then to the greater coasting area of coastland, all face severe eutrophication crisis.By 2012,15 provinces, autonomous regions and municipalities on China coast and interior ground all have been in the pollution of area source high-risk area, serious eutrophication phenomenon has not only reduced the water body health, has broken the eubiosis, also can have influence on the health of the common people in the water system zone and normally carrying out of Agricultural Activities.In the long run, a series of disastrous effects that pollution of area source causes can cause detrimentally affect to China, externally agricultural trade, people's life level and even Economic development, and the theory of promoting a conservation culture that proposes " 18 is large " has just comprised the attention that pollution of area source is controlled.
Than the Urban Areas sewage disposal, the grass roots economic condition is limited, and the sewage source disperses, and the water quality and quantity fluctuation is very large, therefore be difficult to use routine and highly energy-consuming anerobic sowage-(Anaerobic-Anoxic-Oxic is called for short A to the anaerobic-aerobic treatment process 2/ O), sequencing batch activated sludge reactor (Sequencing batch reactor, be called for short SBR) technique.The technology of Control the Plan Pollution Sources mainly comprises three aspects at present: the interception of nitrogen phosphorus source, stage casing are controlled and end is processed.Due to the broad with a varied topography and economics dictate of agricultural district's area, in stage casing, nitrogen phosphorus is removed and is difficult to carry out, therefore paid attention to and what develop is source interception and end processing.Wherein the source Interception Technology mainly refer to nitrogen phosphorus produce that zone is tackled and and reuse, major technique comprises ecological canal, Cao Gou, ecological pond, artificial swamp and land percolation etc., end is processed and is mainly referred to hold back and processed before rich nitrogen-phosphorus wastewater enters runoff and water body, and technical way comprises preposition storehouse, vegetation buffer strip, ecological permeable dam etc.
Wherein, as a kind of more ancient sewage treatment process, land percolation is usually used in the sewage disposal of Rural areas, especially in western countries.Reached 63% in U.S. rural area various forms of land percolation device popularity rate according to investigations, also there are a large amount of stable land percolation facilities in state in operation and Sweden has reached 80% especially, and is German, Canadian etc.Land percolation mainly comprises slow land treatment system, rapid infiltration system, overland flow system, artificial wet land system and subsurface wastewater infiltration system etc., wherein rapid infiltration system and subsurface wastewater infiltration system are more commonly used, the former is economic and practical, water resistant power portative power outstanding, but faces the lower restriction of processing efficiency; Latter's processing efficiency is higher, and the envrionment conditions adaptive faculty is stronger, but is faced with the problem of obstruction, anoxic and filtrate ageing failure.Same, China's land percolation treatment technology commonly used usually faces and comprises that filter clogging, capital construction maintenance cost, operation energy consumption are high, the shortcoming of environmental landscape poor effect at present.In addition, common land percolation system mainly relies on filtrate absorption to the processing of nitrogen phosphorus and non-transformed degraded is completed, and is especially obvious when dephosphorization, so the present invention researches and develops mainly for following target: (1) tolerance country sewage water quality and quantity impacts; (2) the vigorous difficult obstruction of reoxygenation ability; (3) intensified denitrification and dephosphorization effect; (4) green energy conservation economically feasible; (5) possess good water conservancy and the ecological value.
Summary of the invention
The purpose of ecological revetment formula polluted water land filtration system of the present invention and diafiltration method thereof is to provide a kind of less energy-consumption, high efficiency ecological revetment formula polluted water land filtration system and diafiltration method thereof, this system is fit to China's country sewage and focuses on, and possesses wide usage, economical, stability and view.
A kind of ecological revetment formula polluted water land filtration system, comprise the grating tank 2, anaerobic fixed film reactor 4 and the staged land percolation unit that set gradually from top to bottom along the hillside fields gradient, described grating tank 2 is connected with irrigation canals and ditches 1, described staged land percolation unit comprises multistage bank protection infiltration bed 5, described bank protection infiltration bed 5 inside are filled with filtrate 7, cultivate hygrophyte group 9 is arranged on bank protection infiltration bed 5, be provided with for the MODAL TRANSFORMATION OF A assembly 6 that environment and water-out manners in rate of percolation, hydraulic detention time, filtering layer are controlled between adjacent bank protection infiltration bed 5.
Described MODAL TRANSFORMATION OF A assembly 6, comprise inverted T-shaped pipe 11, described inverted T-shaped pipe 11 lower end one interfaces are positioned at upper level bank protection infiltration bed 5, another interface of described inverted T-shaped pipe 11 lower ends is positioned at next stage bank protection infiltration bed 5 tops and forms low level water outlet 12, described inverted T-shaped pipe 11 top interfaces are positioned at next stage bank protection infiltration bed 5 tops and form high-order water outlet 13, described high-order water outlet 13 bottoms are provided with overflow weir tank 14, and overflow weir tank 14 outsides are provided with V-arrangement gore mill weir mouth 15; Described low level water outlet 12 ends are provided with MODAL TRANSFORMATION OF A valve 16.
The cross section of described V-arrangement gore mill weir mouth 15 is V-arrangement, and the water inlet side of V-arrangement gore mill weir mouth 15 is rectangular weir, and the water outlet side of V-arrangement gore mill weir mouth 15 is the V-notch weir that arranges continuously.
Described V-arrangement gore mill weir mouth 15 permeates the vertical height of bed 5 greater than 30cm apart from the next stage bank protection.
The thickness of described bank protection infiltration bed 5 is 30-100cm.
The bedding of described bank protection infiltration bed 5 is 0.3-3% along the gradient of water (flow) direction.
Ecological revetment formula polluted water land filtration system front end of the present invention setting surmounts pipe duct and avoids heavy rain and flood impact with securing system.
Ecological revetment formula polluted water land filtration system end of the present invention arranges nitrogen phosphorus reuse interface 10 so that realize the reuse of nitrogen phosphorus.
A kind of ecological revetment formula polluted water land diafiltration method comprises following steps:
1. at first enter (comprising rainwater and sanitary sewage in earlier stage) grating tank filtering rubbish and the macrobead suspended substance of upper end, hillside fields through the face source sewage of ecological canal or overland flow collection, water outlet flows directly into anaerobic fixed film reactor and removes suspended solid and part biochemical oxygen demand (BOD), Simultaneous Stabilization water quality;
2. through step 1. pretreated water outlet enter staged land percolation unit by overflow weir, by the drop of ecological filtering layer expose to the sun that oxygen, absorption are held back, the absorption of the degraded utilization of microorganism and hygrophyte group transforms and removes most of biochemical oxygen demand (BOD), suspended solid and pathogenic micro-organism, especially by the effective removal of the MODAL TRANSFORMATION OF A assembly realization between multistage bank protection infiltration bed to nitrogen phosphorus;
3. through step 2. the water outlet of land percolation discharged by overflow weir, be used for field irrigation through nitrogen phosphorus reuse mouth, perhaps by wetland or dripping and filtering system, carry out advanced treatment, water outlet enters natural water body.
The present invention is achieved in that sewage under the bottom end opening pattern is directly flowed out by the low level water outlet of filtering layer bottom, and filtering layer head pressure reduction increases, and realizes quick diafiltration,, by filtering layer surface reoxygenation and the oxygenation of water level decline negative pressure, keeps the oxygen enrichment state in filtering layer.This moment, filtrate was mainly by crown_interception filtering macrobead organism, then by the organic pollutant of filtrate microorganism aerobic digest and decompose absorption, thereby reduced the biochemical oxygen demand (BOD) of sewage and total nitrogen, total phosphorus, avoided the dirty Organic Material Blocking filtering layer of macrobead.In this stage, hygrophyte group is by the root system ecosphere (absorption of root, breathing, root nodule flora and Gen Sheng nitrogen microorganism) realize nitration reaction, nitrogen is trapped within the border ecosphere with the form of nitric nitrogen, nitrite nitrogen, polyP bacteria group in filtering layer is by a large amount of PHA(phosphorus polymkeric substance that stick to the zoogloea surface that absorb of microbial metabolism simultaneously), complete the removal of phosphorus thereby change it in born of the same parents nutritive substance, provide energy derive for the biosphere in filtering layer simultaneously.
Under inverted T-shaped pipe top-end water-outlet pattern, sewage enters next filtering layer by high-order water outlet, diminish by filtering layer Inlet and outlet water head difference, enter the slow rate stage in filtering layer, by drop reoxygenation and filter material surface reoxygenation, because sewage stops rear time lengthening, be in the oxygen deprivation state in filtering layer under this pattern, filtrate is mainly held back more short grained organic pollutant by adsorption, then by the amphimicrobe in filtrate, digested, realize the removal of biochemical oxygen demand (BOD), can adsorb the nitrogen phosphorus compound that also absorbs conversion by release portion simultaneously.In this stage, hygrophyte group root system mainly the root nodule bacterium by root system, realize the oxygen deprivation anti-nitration reaction with the denitrification flora in the ecosphere of border, the nitric nitrogen of aerobic stage accumulation is converted into nitrogen and overflows filtering layer dissipation, and the dissipation process of nitrogen can be strengthened exchanging of material and atmospheric substance in filtering layer.Simultaneously polyP bacteria biological activity under the oxygen deprivation state is suppressed, and starts excess and discharges endobacillary phosphorus compound, with PHA(phosphorus polymkeric substance) form be attached to the zoogloea surface, wait for entering under aerobic condition absorbing conversion.This pattern filtering layer water outlet enters overflow weir tank 14, by V-arrangement gore mill weir mouth, with water curtain and a form of filtering, enters next filtering layer, and sewage exchanges by liquid-gas interface and impacts and disperse to realize reoxygenation when descending and entering filtering layer.
sewage disposal principle of the present invention is: by the exchange of diafiltration mode, this system can realize the alternating action of oxygen enrichment-oxygen deprivation-oxygen enrichment-oxygen deprivation condition, be similar to sewage anaerobic-aerobic treatment process and the sequencing batch activated sludge reactor technique of municipal sewage plant, alternately at same filtering layer, repeatedly realize removing biochemical oxygen demand (BOD) by such, denitrogenation dephosphorizing, final nitrogen dissipation enters atmosphere, the phosphorus element mainly is gathered in more high microorganism (Crustachia, earthworm etc.) and in hygrophyte group, can realize the ultimate disposal of phosphorus element by the periodical reaping plant.The ecosphere of complete health can be realized effective removal of pathogenic micro-organism simultaneously, thereby realizes the treating processes of sewage.Ecological filtering layer quantity is more, and the change-over period is shorter, and this system treatment effect is better.
The advantage of ecological revetment formula polluted water land filtration system of the present invention and diafiltration method thereof is:
1. the present invention realizes the sewage reoxygenation by various ways such as filter material surface natural reaeration, drop reoxygenation, negative pressure reoxygenations, guarantees that in ecological filtering layer, oxygen level is sufficient, has both guaranteed the biochemical oxygen demand (BOD) treatment effect, can also effectively avoid filtering layer to stop up;
2. the present invention has realized alternately changing of each filtering layer oxygen enrichment-oxygen deprivation by series connection and the MODAL TRANSFORMATION OF A assembly of multi-filtering layer, can remove efficiency by efficient hardening nitrogen phosphorus, especially the phosphorus of Generic Processing System hard degradation element;
3. can also effectively control the filtering layer rate of percolation by controlling the MODAL TRANSFORMATION OF A assembly, in rainy season or heavy rain, carry out can also increase fast filter filtering layer quantity realization to successfully managing that the water yield is impacted except unlatching surmounts pipe duct temporarily; Can suitably increase slow filtering layer number with reply discharge reduction and water quality deterioration in dry season; Wherein ecological filtering layer filtrate and hygrophyte group can guarantee normal growth under long-term submergence or extreme drought state; The present invention has stronger tolerance for water quantity and quality impact variation common in the rural sewage treatment field;
4. the present invention is based upon on the basis of ecological revetment, and staged land percolation unit itself can be used as the hillside fields bank protection, can effectively reduce the harm that the disasters such as soil erosion, landslide, rubble flow are brought, and ensures the safety of local-style dwelling houses group economic asset; Can also use as water conservancy projects if be based upon on the lake of He Hu pool canal, possess simultaneously that process in the sewage source and the function of protection zone water conservancy safety;
5. the present invention is stepped at the ecological revetment that builds, hygrophyte is planted by each stratum, simulated the landscape effect of " garden waterfall " formula by the organic assembling of filtering layer drop, water outlet and plant community, jointly given the huge ecoscape of native system by the effect of regulating and storing of the photosynthesis in conjunction with plant community and current and temperature humidity simultaneously and be worth;
6. the present invention has effectively utilized the discrepancy in elevation in knob local-style dwelling houses and field, and system tail water both can flow into and take in water body, also can naturally flow in field, vegetable plot and realize the reuse of nitrogen phosphorus, has both realized that resource reclaims also to save the advanced treatment of wastewater link;
7. the present invention utilizes the natural feature in hillside fields to reduce the capital construction input, does not rely on anyone to make the energy and power in collection, processing, discharging, reuse process simultaneously, realizes zero energy consumption fully; Also can complete quickly and easily when needing repairing replacing, farthest save economic input, can also realize the resource back feeding by output green plants and ecological impression.
Description of drawings
Fig. 1 is the one-piece construction schematic diagram of ecological revetment formula polluted water land filtration system of the present invention;
Fig. 2 is the structural representation of MODAL TRANSFORMATION OF A assembly;
Fig. 3 is the structural representation of V-arrangement gore mill weir mouth;
In figure, 1 is irrigation canals and ditches, and 2 is grating tank, 3 is grid, and 4 is anaerobic fixed film reactor, and 5 is multistage bank protection infiltration bed, 6 is the MODAL TRANSFORMATION OF A assembly, and 7 is filtrate, and 9 is hygrophyte group, 10 is nitrogen phosphorus reuse interface, and 11 is the inverted T-shaped pipe, and 12 is the low level water outlet, 13 is high-order water outlet, 14 is the overflow weir tank, and 15 is V-arrangement gore mill weir mouth, and 16 is the MODAL TRANSFORMATION OF A valve.
Embodiment
below in conjunction with accompanying drawing, the present invention is further described: as Figure 1-3, a kind of ecological revetment formula polluted water land filtration system, comprise the grating tank 2 that sets gradually from top to bottom along the hillside fields gradient, anaerobic fixed film reactor 4 and staged land percolation unit, described grating tank 2 is connected with irrigation canals and ditches 1, described staged land percolation unit comprises multistage bank protection infiltration bed 5, described bank protection infiltration bed 5 inside are filled with filtrate 7, cultivate hygrophyte group 9 is arranged on bank protection infiltration bed 5, be provided with between adjacent bank protection infiltration bed 5 for to rate of percolation, hydraulic detention time, the MODAL TRANSFORMATION OF A assembly 6 that in filtering layer, environment and water-out manners are controlled.
Described MODAL TRANSFORMATION OF A assembly 6, comprise inverted T-shaped pipe 11, described inverted T-shaped pipe 11 lower end one interfaces are positioned at upper level bank protection infiltration bed 5, another interface of described inverted T-shaped pipe 11 lower ends is positioned at next stage bank protection infiltration bed 5 tops and forms low level water outlet 12, described inverted T-shaped pipe 11 top interfaces are positioned at next stage bank protection infiltration bed 5 tops and form high-order water outlet 13, described high-order water outlet 13 bottoms are provided with overflow weir tank 14, and overflow weir tank 14 outsides are provided with V-arrangement gore mill weir mouth 15; Described low level water outlet 12 ends are provided with MODAL TRANSFORMATION OF A valve 16.
Described V-arrangement gore mill weir mouth 15 permeates the vertical height of bed 5 greater than 30cm apart from the next stage bank protection.
Ecological revetment formula polluted water land filtration system end of the present invention arranges nitrogen phosphorus reuse interface 10 so that realize the reuse of nitrogen phosphorus.sewage biochemical oxygen demand (BOD) clearance through staged land percolation unit can reach more than 70%, but still contain a certain amount of unlikely nitrogen phosphorus element that causes eutrophication in water body, the chemical fertilizer that comes from Use out of range due to nitrogen phosphorus element major part, if directly discharging can cause the ecological filtering layer water side of the wasting of resources that nitrogen phosphorus reuse interface 10 is set, water outlet enters arable land or vegetable plot under slope by meeting with mouth after by overflow weir, realize the reuse of nitrogen phosphorus by irrigation, and the sewage after the reuse of vegetable plot, farmland is equal to by overland flow land percolation system, remaining nitrogen phosphorus is all absorbed by phytomicroorganism, meet the requirement of discharging fully, this process can help to realize the local water cycle process in village simultaneously, this is to protection village water resources and realize that ecoscape has active effect, if tail water need to enter natural water body not comtaminated or that be protected, water outlet can enter ecological pond, wet land system carries out advanced treatment, can also be connected to preposition storehouse, the ecological permeable dam system is finally processed, and can enter natural water body after water quality reaching standard.
Irrigation canals and ditches 1 are that long-width ratio is the impervious concrete irrigation canals and ditches of 1:2 for cross section, accept the sewage from face source sewage collection system, and grating tank 2 is the Dual-channel vertical grating tank, and the solid contaminant on grid is by manually dragging for and remove clearly.
Anaerobic fixed film reactor 4 is square impervious concrete pond, all lays geomembrane at the bottom of pool wall and pond and prevents the acidizing fluid seepage.In anaerobic fixed film reactor 4, some horizontal baffles can be set as required,, in order to uniform current, delay flow velocity and strengthen the suspended solid removal effect.Sewage enters the rear hydraulic detention time of anaerobic fixed film reactor 4 and surpasses more than 1 day, form anaerobic condition, by facultative anaerobe and obligatory anaerobic bacteria, organism in sewage is carried out biological degradation, especially easily cause the macrobead organic pollutant of land percolation system jams to be hydrolyzed in this course, acidifying is more short grained organism and the easy organic acid of degraded.Improve by the Biodegradability of Wastewater with processing, suspended solid significantly reduces and is difficult for causing obstruction.
The multistage bank protection infiltration bed 5 of staged land percolation unit is built along the physical features in natural hillside fields, uses impervious concrete to build as stepped, and every one-level is left a blank as the filtrate bedding and waterwall is set, and bedding keeps the gradient of 0.3-3% along water (flow) direction.Different filtering layers are by 6 series connection of MODAL TRANSFORMATION OF A assembly.Open some water outlets in every one-level end bottom, an end directly flushes next filtering layer upper surface, and the inverted T-shaped pipe 11(that the other end connects in waterwall sees accompanying drawing 2), upwards diversion, to overflow weir, is dropped and is entered next filtering layer by crest of weir.
On selection of filtering material, ecological filtering layer filtrate can be selected take haydite, gravel, cinder as main material, also can take on the spot other local aggregates, such as vermiculite, diatomite etc., with variation and the environment friendly of realizing filtrate.Filtrate in each ecological filtering layer can be comprised of filtrate of the same race, also can several use with, its thickness of filter bed can be selected in 30-100cm, but along with the filtrate median size of the different filtering layers of water (flow) direction will reduce gradually, particle size range can be selected by 1-15mm according to concrete operating mode., in area with good conditionsi, can lay the combination filtering layer of the mixed variation of size in same filtering layer, with the enhanced sewage treatment effect.If the filtering layer area of plane more greatly need consider to lay water-permeable brick or the repair and maintenance passage is built in building block at filter material surface.
Overflow weir tank 14 water outlets are designed to " ∨ " shape and can depend on waterwall to guarantee current and can form water curtain and flow down, crest of weir is designed to transversely arranged a large amount of small V-notch weir (referring to accompanying drawing 3) simultaneously, can guarantee that not only water outlet is uniform in the horizontal, make simultaneously water outlet form the water curtain of dispersion or drip the filter fluidised form.According to the research conclusion of 2011 such as Chao Lei, Hu Cheng, water curtain or a filter form are more conducive to the reoxygenation that drops.Simultaneously, for making drop reoxygenation ample time, thickness of filter bed should be lower than 30cm, and under this drop height, oxygen in water can reach 2mg/L.Accordingly, accept the zone of current at next filtering layer, do not answer planting plants, form horizontal irrigation canals and ditches and should reserve a groove, falling current enters in canal, form a large amount of bubbles and whirlpool by impact, thereby by drop interaction between current and water body air of enhancing, greatly strengthen the efficiency of drop reoxygenation.
Further, suitable hygrophyte should be selected in multistage bank protection infiltration bed 5 surfaces.Plant is selected take native plants as main, takes into account the nitrogen phosphorus treatment effect of plant.Wherein first elect local indigenous hygrophyte, suitably the very herbs and shrubs class plant of water is planted in collocation, comprises yellow cattail, Canna generalis Bailey, rhizoma alismatis and reed etc.Planting process, by manually having sowed seeds, can be selected some nutraceutical matrix fortification of plants community growths, but must guard against use chemical fertilizer.In addition, consider that plant community is quite huge in the nitrogen phosphorus amount of growing period storage in summer, likely autumn and winter excessive liberating nitrogen phosphorus or because soak rainy season, heavy rain washes away nitrogen phosphorus discharged into environment, therefore need to organize every year the villager to plant gather in to make compost, livestock culture, economic production etc., realize the environmental economical profit output.
In the present invention, system front end can first stage of construction heavy rain tripping device, connect the flood control irrigation canals and ditches, and arranges and surmount piping system.Hold back the initial stage heavy rain at heavy rain processes temporarily.Come to cause system damage or filtrate to run off by surmounting pipeline short circuit system to prevent the flood erosion system at flood temporarily.
A kind of ecological revetment formula polluted water land diafiltration method comprises following steps:
1. at first enter (comprising rainwater and sanitary sewage in earlier stage) grating tank filtering rubbish and the macrobead suspended substance of upper end, hillside fields through the face source sewage of ecological canal or overland flow collection, water outlet flows directly into anaerobic fixed film reactor and removes suspended solid and part biochemical oxygen demand (BOD), Simultaneous Stabilization water quality;
2. through step 1. pretreated water outlet enter staged land percolation unit by overflow weir, by the drop of ecological filtering layer expose to the sun that oxygen, absorption are held back, the absorption of the degraded utilization of microorganism and hygrophyte group transforms and removes most of biochemical oxygen demand (BOD), suspended solid and pathogenic micro-organism, especially by the effective removal of the MODAL TRANSFORMATION OF A assembly realization between multistage bank protection infiltration bed to nitrogen phosphorus;
3. through step 2. the water outlet of land percolation discharged by overflow weir, be used for field irrigation through nitrogen phosphorus reuse mouth, perhaps by wetland or dripping and filtering system, carry out advanced treatment, water outlet enters natural water body.

Claims (7)

1. ecological revetment formula polluted water land filtration system, it is characterized in that: comprise the grating tank ⑵ that sets gradually from top to bottom along the hillside fields gradient, anaerobic fixed film reactor ⑷ and staged land percolation unit, described grating tank ⑵ is connected with irrigation canals and ditches ⑴, described staged land percolation unit comprises multistage bank protection infiltration bed ⑸, described bank protection infiltration bed ⑸ inside is filled with filtrate ⑺, the upper cultivation of bank protection infiltration bed ⑸ has the ⑼ of hygrophyte group, be provided with between adjacent bank protection infiltration bed ⑸ for to rate of percolation, hydraulic detention time, the MODAL TRANSFORMATION OF A assembly ⑹ that in filtering layer, environment and water-out manners are controlled.
2. ecological revetment formula polluted water land filtration system as claimed in claim 1, it is characterized in that: described MODAL TRANSFORMATION OF A assembly ⑹, comprise inverted T-shaped pipe ⑾, described inverted T-shaped pipe ⑾ lower end one interface is positioned at upper level bank protection infiltration bed ⑸, another interface of described inverted T-shaped pipe ⑾ lower end is positioned at next stage bank protection infiltration bed ⑸ top and forms low level water outlet ⑿, described inverted T-shaped pipe ⑾ top interface is positioned at next stage bank protection infiltration bed ⑸ top and forms high-order water outlet ⒀, described high-order water outlet ⒀ bottom is provided with overflow weir tank ⒁, overflow weir tank ⒁ outside is provided with V-arrangement gore mill weir mouth ⒂, described low level water outlet ⑿ end is provided with MODAL TRANSFORMATION OF A valve ⒃.
3. ecological revetment formula polluted water land filtration system as claimed in claim 2, it is characterized in that: the cross section of described V-arrangement gore mill weir mouth ⒂ is V-arrangement, the water inlet side of V-arrangement gore mill weir mouth ⒂ is rectangular weir, and the water outlet side of V-arrangement gore mill weir mouth ⒂ is the V-notch weir that arranges continuously.
4. ecological revetment formula polluted water land filtration system as claimed in claim 2 or claim 3 is characterized in that: described V-arrangement gore mill weir mouth ⒂ apart from the vertical height of next stage bank protection infiltration bed ⑸ greater than 30cm.
5. ecological revetment formula polluted water land filtration system as claimed in claim 1 is characterized in that: the thickness of described bank protection infiltration bed ⑸ is 30-100cm.
6. ecological revetment formula polluted water land filtration system as claimed in claim 1 is characterized in that: the bedding of described bank protection infiltration bed ⑸ is 0.3-3% along the gradient of water (flow) direction.
7. utilize the land percolation method of the described ecological revetment formula of claim 1-6 any one polluted water land filtration system, comprise following steps:
1. at first enter grating tank filtering rubbish and the macrobead suspended substance of upper end, hillside fields through the face source sewage of ecological canal or overland flow collection, water outlet flows directly into anaerobic fixed film reactor and removes suspended solid and part biochemical oxygen demand (BOD), Simultaneous Stabilization water quality;
2. through step 1. pretreated water outlet enter staged land percolation unit by overflow weir, by the drop of ecological filtering layer expose to the sun that oxygen, absorption are held back, the absorption of the degraded utilization of microorganism and hygrophyte group transforms and removes most of biochemical oxygen demand (BOD), suspended solid and pathogenic micro-organism, especially by the effective removal of the MODAL TRANSFORMATION OF A assembly realization between multistage bank protection infiltration bed to nitrogen phosphorus;
3. through step 2. the water outlet of land percolation discharged by overflow weir, be used for field irrigation through nitrogen phosphorus reuse mouth, perhaps by wetland or dripping and filtering system, carry out advanced treatment, water outlet enters natural water body.
CN2013103280705A 2013-07-31 2013-07-31 Ecological slope protection type sewage land infiltration system and ecological slope protection type sewage land infiltration method CN103395930A (en)

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CN104071947A (en) * 2014-06-19 2014-10-01 东北师范大学 Household unpowered combined sewage treatment device
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CN104445826A (en) * 2014-12-15 2015-03-25 贵州师范大学 Water purification system for karst region
CN104686162A (en) * 2015-03-11 2015-06-10 安庆万草千木农业科技有限公司 Selenium-enriched fruit and vegetable high-yield interplanting technology
CN104686168A (en) * 2015-03-11 2015-06-10 安庆万草千木农业科技有限公司 Method for cultivating selenium-enriched vegetables
CN104756711A (en) * 2015-04-08 2015-07-08 安庆万草千木农业科技有限公司 High yield cultivation method of medicinal materials
CN104773914A (en) * 2015-04-01 2015-07-15 东南大学 Collecting and treating device for rural disordered-emission sewage
CN104773929A (en) * 2015-05-04 2015-07-15 河海大学 Zero-valent iron/microorganism composite percolation wall purification system for domestic sewage of irrigated area
CN104944590A (en) * 2015-06-24 2015-09-30 浙江海洋学院 Rural non-point source sewage treatment multi-layer ladder seepage drainage and non-point source sewage treatment process
CN104984569A (en) * 2015-05-29 2015-10-21 扬中市第一蝶阀厂有限公司 Novel combined packing filter device
CN105565589A (en) * 2015-12-14 2016-05-11 哈尔滨工业大学 Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank
CN105645592A (en) * 2015-12-30 2016-06-08 北京东方利禾景观设计有限公司 Ecological bank revetment for purifying non-point pollutants
CN105908802A (en) * 2016-06-13 2016-08-31 山东大学 Ecotype rainwater quality-divided accumulation and storage system and building method for hilly region
CN106012952A (en) * 2016-07-06 2016-10-12 陕西省土地工程建设集团有限责任公司 Riverway water source large-scale in-situ water purifying system and method
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CN109081521A (en) * 2018-09-20 2018-12-25 华蓥市职业教育培训中心 It is a kind of for administering the Ecosystem restoration system of Rural Plane Source Pollution
CN110028150A (en) * 2019-04-28 2019-07-19 江苏省中国科学院植物研究所 A kind of modularization coupling sewage disposal system
CN111056704A (en) * 2019-12-16 2020-04-24 中国科学院地球化学研究所 Unpowered sewage treatment system for natural negative topography of karst mountain wetland

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EP3112321A4 (en) * 2014-02-28 2017-09-20 Photon Eco-capture Pty Ltd. Super-large scale photon capture bioreactor for water purification and operation method therefor
US10160681B2 (en) 2014-02-28 2018-12-25 Photon Eco-Capture Pty Ltd Super-large scale photon capture bioreactor for water purification and operation method therefor
US10000398B2 (en) 2014-03-21 2018-06-19 Nanjing University Ecological Research Institute Of Changshu In-situ purification island structure and the construction method thereof
CN104016542A (en) * 2014-05-28 2014-09-03 复旦大学 Ladder-type composite constructed-wetland apparatus for processing low-pollution water
CN104069668A (en) * 2014-06-09 2014-10-01 陆辰钊 Efficient sewage filtering control system
CN104071947B (en) * 2014-06-19 2017-01-04 东北师范大学 Domestic are unpowered combined type sewage treatment equipment
CN104071947A (en) * 2014-06-19 2014-10-01 东北师范大学 Household unpowered combined sewage treatment device
CN104386879A (en) * 2014-11-19 2015-03-04 北京土人城市规划设计有限公司 Terraced soil-stratification overflow water purification system and terraced soil-stratification type overflow water purification method
CN104445826A (en) * 2014-12-15 2015-03-25 贵州师范大学 Water purification system for karst region
CN104686168B (en) * 2015-03-11 2018-03-13 南京郢天健康管理有限公司 A kind of cultural method of rich selenium vegetables
CN104686162A (en) * 2015-03-11 2015-06-10 安庆万草千木农业科技有限公司 Selenium-enriched fruit and vegetable high-yield interplanting technology
CN104686168A (en) * 2015-03-11 2015-06-10 安庆万草千木农业科技有限公司 Method for cultivating selenium-enriched vegetables
CN104773914A (en) * 2015-04-01 2015-07-15 东南大学 Collecting and treating device for rural disordered-emission sewage
CN104756711B (en) * 2015-04-08 2018-01-30 安徽和济堂中药饮片有限公司 A kind of high yield cultivating method of medicinal material
CN104756711A (en) * 2015-04-08 2015-07-08 安庆万草千木农业科技有限公司 High yield cultivation method of medicinal materials
CN104773929A (en) * 2015-05-04 2015-07-15 河海大学 Zero-valent iron/microorganism composite percolation wall purification system for domestic sewage of irrigated area
CN104984569A (en) * 2015-05-29 2015-10-21 扬中市第一蝶阀厂有限公司 Novel combined packing filter device
CN104944590A (en) * 2015-06-24 2015-09-30 浙江海洋学院 Rural non-point source sewage treatment multi-layer ladder seepage drainage and non-point source sewage treatment process
CN105565589A (en) * 2015-12-14 2016-05-11 哈尔滨工业大学 Built-in biochemical-ecological system based on in-river rainwater runoff purification river bank
CN105645592A (en) * 2015-12-30 2016-06-08 北京东方利禾景观设计有限公司 Ecological bank revetment for purifying non-point pollutants
CN105908802B (en) * 2016-06-13 2018-04-24 山东大学 A kind of Mountain Area ecotype rainwater separating harvests system and construction method
CN105908802A (en) * 2016-06-13 2016-08-31 山东大学 Ecotype rainwater quality-divided accumulation and storage system and building method for hilly region
CN106012952A (en) * 2016-07-06 2016-10-12 陕西省土地工程建设集团有限责任公司 Riverway water source large-scale in-situ water purifying system and method
CN109081521A (en) * 2018-09-20 2018-12-25 华蓥市职业教育培训中心 It is a kind of for administering the Ecosystem restoration system of Rural Plane Source Pollution
CN110028150A (en) * 2019-04-28 2019-07-19 江苏省中国科学院植物研究所 A kind of modularization coupling sewage disposal system
CN111056704A (en) * 2019-12-16 2020-04-24 中国科学院地球化学研究所 Unpowered sewage treatment system for natural negative topography of karst mountain wetland

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