CN100497207C - Backwash, aeration type undercurrent wetland water body purification apparatus and water body purification method - Google Patents

Backwash, aeration type undercurrent wetland water body purification apparatus and water body purification method Download PDF

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Publication number
CN100497207C
CN100497207C CNB2007100564926A CN200710056492A CN100497207C CN 100497207 C CN100497207 C CN 100497207C CN B2007100564926 A CNB2007100564926 A CN B2007100564926A CN 200710056492 A CN200710056492 A CN 200710056492A CN 100497207 C CN100497207 C CN 100497207C
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China
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water
pond
downstream tank
pipe
purifying treatment
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CNB2007100564926A
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Chinese (zh)
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CN101007687A (en
Inventor
刘学功
李金中
江浩
孙宝玉
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天津市水利科学研究所
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a purifying device of backwash, aeration type hidden flow marshland water body and a method of purifying water body, wherein the whole purified pool display cube box; the separating pool separate the pool as downward pool and upper pool; the filling base material pack evenly in the pool; planting amphibious plant on the upper; setting cloth water pipe on the upper of the upper pool; making the upper of adjusting pool higher than purifying pool; setting inlet pipe and water-feed pump on the one side of the adjusting pool; setting admitting pipe and admitting pipe on the upper of the upper pool; setting aeration machine on one side of the purifying pool. The invention possesses high load factor, small plot area and good treatment effect, which can improve treatment effect.

Description

Back flushing, aeration type undercurrent wetland water body purification apparatus and water body purification method
Technical field
The present invention relates to a kind of undercurrent wetland water body purification apparatus, relate in particular to a kind of back flushing, aeration type undercurrent wetland water body purification apparatus and water body purification method.
Background technology
Since the seventies in 20th century, the artificial swamp water technology begins to be subjected to people's attention, has advantages such as low investment, less energy-consumption, becomes water surrounding Study on Technology focus.Current wetland belongs to the new technology of artificial swamp sewage disposal, is the wet land system of that manually build, controllable and through engineering approaches.
The advantage of current wetland has been to make full use of the space of wetland, has brought into play the coordinative role between system, and the processing power of current wetland increases substantially under with the situation of homalographic.At present, current wetland comprises three key components: plant, microorganism, matrix.The artificial filler of building different-grain diameter is 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 microorganisms, form microbial film in matrix and root system of plant surface, water has the latent layer porous filter bed of plant with undercurrent form infiltrate length, soak in the matrix bed body and expired water body, by the physics in the current wetland, chemistry and biological action, the purification to water body is finished in optimum combination.But still have a lot of defectives and deficiency, and plant in the current wetland and microorganism are subjected to weather effect bigger, and particularly in northern Urban Water Environment was improved, because influence ice period in winter, water distribution layer was frozen and is caused wet land system not move; Microorganism in the current wetland relies in the operational process and forms naturally, can not manually add the high-effective microorganism bacterium, the effect of microbiological deterioration can not be not fully exerted in the current wetland, and it is relatively poor that particularly wetland builds up the initial stage treatment effect, and spring, microorganism recovery process was slow.Current wetland 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.Current wetland is not provided with back-purge system, contains a large amount of organic pollutants and suspended solid in the sewage, deposits for a long time at bottom, causes current wetland to stop up and the current short circuit easily, current wetland efficient is reduced, even cause current wetland normally not move.
Summary of the invention
Main purpose of the present invention is to solve the problem that above-mentioned current wetland exists, and integrated back flushing, aeration type undercurrent wetland water body purification apparatus and the water body purification methods of many technology such as aeration process at the bottom of a kind of combination water, high-effective microorganism treatment technology, backwashing technology, preventing freeze in winter technology and current wetland technology are provided.
The present invention is by water-bed aeration and high-effective microorganism technology, improve the purification of water quality ability of microorganism in the current wetland, increase the content of dissolved oxygen in the water outlet, operation by the high-water in winter, behind the ice-bound layer of the artificial formation in current wetland top, reduce the wetland water level again, form the air-isolation layer at ice-bound layer and wetland surface, play heat preservation effect, guarantee that wetland still can normally move in the winter time, simultaneously, use backwashing technology, prevent the obstruction of wetland inside, the assurance system can steady in a long-term move.
The technical solution adopted for the present invention to solve the technical problems is:
Purifying treatment pond integral body is a cube casing shape, the purifying treatment pond is provided with the separation pool wall by the middle part, the purifying treatment pond is separated into downstream tank and up pond, even filling filling substrate in downstream tank and the up pond, the pool wall in purifying treatment pond is higher than the upper surface of filling substrate, the filling filling substrate will not have water distributor and received water pipe, and the upper end in purifying treatment pond is below the face of land, and water body moves in the purifying treatment pond under the face of land all the time.
The most of processing of current wetland purification processing facility is to carry out below the face of land, be fit to very much North China than cold weather, all good throughout the year, and be difficult for to produce stink and mosquito than natural wetland treatment effect, solve the technical barrier that the Ecological Disposal technology can not widespread use in the north.It is two parts that the purifying treatment pond is divided with the separation pool wall, promptly is separated into downstream tank and up pond, and even filling filling substrate in downstream tank and the up pond carries out sewage purification effectively and handles.
Amphibious kind of plant is all planted on filling substrate top in downstream tank and the up pond, the root system of kind of plant is tied in the filling substrate in downstream tank and up pond, the root system of filling substrate fixed race plant, the top of separating pool wall is provided with 1 above back flushing communicating aperture at least, and the back flushing communicating aperture is communicated with downstream tank and up pond.
Utilize the pollution substance in the various waterplant absorption water bodys on the filling substrate of artificial plant in downstream tank and up pond, reach the purpose of purifying water body.Nitrogen phosphorus, perennial cold-resistant herbaceous plant can be efficiently removed in plantation on filling substrate, utilize purifying treatment pond and plant to filter and absorb the principle of pollution substance in the sewage, on the one hand by the filter material hold back by the filling substrate surface, deposition, bridge joint effect, and also have flocculation, adsorption to take place in the filling substrate depths, thereby impel particle aggregation, whole filling substrate can both be held back the suspended solids in the water body; On the other hand, adopt the filling substrate planting technology,, can remove main nutrients of nitrogen, phosphoric in the eutrophication water significantly,, certain adsorption is arranged also the heavy metal element that is difficult to degrade in the sewage water body by the sorption of root system of plant.
Aquatic, hygrophyte passes through directly to absorb nutritive substance (N, P) and enriching heavy metal, reaches the pollutent of removing water body, by the harvesting of plant materials pollutent is shifted out from water body, realizes the purification to water body.Aquatic, hygrophyte is discharged into oxygen in the water body by photosynthesis and oxygen therapy process, increases dissolved oxygen content in the water body, improves the self-purification capacity of water body.Aquatic, hygrophyte passes through the absorption of its sense effect and nutritive substance, suppresses algal grown, prevents body eutrophication, and being grown to of waterplant is low-cost, high efficiency water body purification provides condition, is convenient to the plant maintenance and management in later stage.
Separate the top that back flushing communicating aperture downstream tank and up pond are set on the pool wall and be communicated with, the mud that rinses out during back flushing is transported to the top in up pond by the back flushing communicating aperture by downstream tank top, discharges the purifying treatment pond from rising pipe.
The top of downstream tank is provided with 1 above water distributor at least, the infiltration hole is set on the water distributor, water distributor runs through the top of downstream tank, one end of water distributor is connected with the other end of water inlet pipe, water distributor is connected with water inlet pipe, water body enters in the downstream tank from the infiltration hole on the water distributor, and water body is filling substrate because action of gravity is from top to bottom slowly flowed through, and arrives the bottom of downstream tank.
Water distributor is positioned at the top of downstream tank, and current equably to the downstream tank water distribution, all are filled with filling substrate in downstream tank and the up pond by water distributor, and water body because filling substrate is slowly flow through in action of gravity from top to bottom, arrives the downstream tank bottom in downstream tank.Stream from top to bottom pass through in, the root system of the top kind of plant of downstream tank and filling substrate adhere to carrier for microorganism provides, microorganism forms microbial film on the surface of the root system of kind of plant and filling substrate, the pollutent in the degraded water body.
One end of water inlet pipe is connected with the opposite side top of water equalizing tank, one end and the regulation of level pond of water inlet pipe connect, the top in regulation of level pond is higher than the upper end in purifying treatment pond, the water level and the flow of the water body in purifying treatment pond stablized in the regulation of level pond, water body in the regulation of level pond enters in the water distributor by the water inlet pipe gravity flow under the head pressure effect, flows into by water distributor in the downstream tank in purifying treatment pond.
The treatment sewage water body is diversion water pump suction regulation of level pond by diversion system, and the effect of fixed level and flow is played in the regulation of level pond, and the water in the regulation of level pond is entered in the water distributor by the water inlet pipe gravity flow under the head pressure effect.
The other end of water inlet pipe is provided with control gate valve and under meter, control and show that the regulation of level pond water inlet pipe of flowing through enters the flow direction and the flow of the water body of water distributor.
One side of water equalizing tank is provided with the water body water inlet pipe, the other end of water body water inlet pipe is connected with a side of water equalizing tank, the other end of water body water inlet pipe and regulation of level pond connect, one end of water body water inlet pipe is connected with the water outlet of diversion water pump, in the regulation of level pond, carry water body, water body control gate valve is set between the other end of water body water inlet pipe and the water equalizing tank, and the control water body enters the flow direction and the flow of water equalizing tank, and the water-in of diversion water pump is connected with water body.
One end of back flushing water pipe is connected with the water outlet of diversion water pump, downstream tank is carried backwashing water, the other end of back flushing water pipe is connected with an end of the connection water pipe of bottom, following shape pond, the other end of back flushing water pipe is provided with back flushing control gate valve, and control enters the flow direction and the flow of the back flushing water body in downstream tank and up pond.
On water body water inlet pipe, water inlet pipe, back flushing water pipe and rising pipe, gate valve is installed all, realizes effective control water (flow) direction and flow.
The bottom in downstream tank and up pond is provided with at least more than 1 along downstream tank and up pond bottom and is communicated with water pipe, be communicated with the bottom that water pipe runs through downstream tank and up pond, be communicated with cross current downstream tank and up pond, arrive downstream tank bottom water body because the head pressure of downstream tank enters the bottom in up pond by the connection water pipe.
The top in up pond is provided with the receipts water pipe, the receipts water pipe runs through the top in up pond, and the top in up pond sets out water pipe, and the other end of receiving water pipe is connected with rising pipe, the rising pipe the other end sets out the water management gate valve, and the flow direction and the flow of the water outlet of water pipe are received in the control of water outlet control gate valve.
Enter water body in the up pond because the action of gravity filling substrate of slowly flowing through from the bottom to top, arrive the top in up pond, enter the receipts water pipe on top, up pond, enter rising pipe and discharge by receiving water pipe again.
Water body because filling substrate is slowly flow through in the action of gravity of downstream tank head from the bottom to top, arrives the upper bottom portion in up pond in up pond.Stream from the bottom to top pass through in, the root system of the top kind of plant in up pond and filling substrate adhere to carrier for microorganism provides, microorganism forms microbial film on the surface of the root system of kind of plant and filling substrate, the pollutent in the degraded water body.
One side in up pond is provided with the maintenance evacuated tube, and the maintenance evacuated tube extends through the bottom in up pond by the top in up pond, and the infiltration hole is set on the tube wall of maintenance evacuated tube, between turn(a)round by the find time water body in purifying treatment pond of maintenance emptying water pipe.
Behind system's long-play, for preventing the alluvial of organic pollutant and water body suspended substance system is resulted in blockage, sewage water body pending in the purifying treatment pond is found time from maintenance emptying water pipe with pump, make the purifying treatment pond be in dry state
The side in purifying treatment pond is provided with aerator, the bottom in purifying treatment pond is provided with 1 above aeration tube at least, aeration tube runs through the bottom in downstream tank and up pond, the other end of aeration tube is connected with the outlet of aerator, aerator by aeration tube equably the filling substrate in downstream tank and up pond carry out aeration, increase the content of dissolved oxygen in the water body.
Bottom in the purifying treatment pond is provided with aeration tube, oxygen is under the pressure of aerator, enter in the aeration tube, in filling substrate, carry out aeration equably by aeration tube, to increase the content of oxygen in water, simultaneously, also discharge oxygen in photosynthesis of plant and the root system oxygen therapy process, for the aerobic microbiological activity provides oxygen source to water body.
The sectional area in purifying treatment pond is rectangle, trapezoidal, circular, semicircle, Polygons, irregular polygon, adopts at least more than a kind.
The shape in each purifying treatment pond can be determined according to view requirement and topographical condition, can be rectangle, trapezoidal, semicircle, or other shape.
The purifying treatment pond is made of downstream tank more than 1 group and up pond at least, carries out multiple treatment and purification water body.The purifying treatment pond is connected by the polyphone of the purifying treatment pond more than 2 at least, carries out multiple treatment and purification water body.
The composition in each purifying treatment pond can be according to the needs of water conditioning, by 1 group or organize downstream tank and up pond is formed, carry out multiple treatment and purification water body more., very contact and connect to form purifying treatment pond treatment system by 2 purifying treatment ponds according to the needs of water conditioning, carry out multiple treatment and purification water body to a plurality of purifying treatment pond.
Filling substrate is rubble, haydite, volcano basalt, and particle diameter is 10-15mm, adopts at least more than a kind.The kind of plant on top, purifying treatment pond is amphibious plant, and amphibious plant is adopted emergent in the waterplant, and emergent is wilson iris, Spiked Loosestrife, skirret, cattail, Scirpus tabernaemontani, Canna generalis Bailey, plants at least more than a kind.
All plant amphibious kind of plant in downstream tank and top, up pond, the root system of kind of plant is tied in the filling substrate, filling substrate is that plant growth provides support, simultaneously, the root system of kind of plant and filling substrate adhere to carrier for microorganism provides again, microorganism forms microbial film on the root system and the filling substrate surface of kind of plant, enhancing is to contaminant degradation in the water body, the bottom of filling substrate is furnished with aeration tube again, under the pressure of oxygen by aerator, enter in the aeration tube, in filling substrate, carry out aeration equably by aeration tube, to increase the content of oxygen in water, simultaneously, also discharge oxygen in kind of plant photosynthesis and the root system oxygen therapy process, for the aerobic microbiological activity provides oxygen source to water body.
Open water body control sluice valve, water distribution control gate valve and water outlet control gate valve, close the back flushing control gate valve on the back flushing water pipe, start the pending sewage water body of diversion pump handle by in the water body water inlet pipe suction regulation of level pond, the water level of regulation of level pool inner water body reaches the port of top, regulation of level pond water inlet pipe, water body in the regulation of level pond flows into water inlet pipe by the port of water inlet pipe under the head pressure effect, water body enters in the water distributor of downstream tank by water inlet pipe gravity flow, the top of downstream tank to downstream tank in water distribution.
Water body in the inflow downstream tank is filling substrate because action of gravity is from top to bottom slowly flowed through, and arrives the bottom of downstream tank.
Treatment sewage is by diversion and water pump suction regulation of level pond, and the effect of fixed level and flow is played in the regulation of level pond.Water in the regulation of level pond is entered in the water distributor by the water inlet pipe gravity flow under the head pressure effect, and water inlet pipe flow size is controlled by control sluice.Water distributor is positioned at the top of downstream tank, current pass through water distributor equably to the downstream tank water distribution, the even filling substrate that is filled with in downstream tank and the up pond, water body because inner filling substrate is slowly flow through in action of gravity from top to bottom, arrives the downstream tank bottom in downstream tank.
The root system of the top kind of plant of downstream tank and filling substrate adhere to carrier for microorganism provides in the filling substrate process of the downstream tank of flowing through, and microorganism forms microbial film at the root system of kind of plant and the surface of filling substrate, the pollutent in the degraded water body.After water body arrived the downstream tank bottom, because the downstream tank head pressure, water body entered the bottom in up pond by the several connection water pipes that are arranged on the downstream tank bottom.
Enter slowly flow through the from the bottom to top filling substrate in up pond of up pond water body, the root system of the top kind of plant in up pond and filling substrate adhere to carrier for microorganism provides in the filling substrate process in the up pond of flowing through, microorganism forms microbial film at the root system of kind of plant and the surface of filling substrate, continues the pollutent in the degraded water body.When the top that water body arrives up pond flows into the receipts water pipe on top, up pond, the water body that flows in the receipts water pipe on top, up pond is discharged by rising pipe.
In the water body operational process, the lateral aerator in purifying treatment pond, by aeration tube equably the filling substrate in downstream tank and up pond carry out aeration, increase the content of dissolved oxygen in the water body.
Water body behind the arrival downstream tank bottom is by being communicated with the bottom that water pipe enters up pond, because the downstream tank head pressure, current slowly flow through filling substrate again from the bottom to top in up pond, enter the receipts water pipe on top, up pond, water body enters rising pipe by receiving water pipe, is discharged to river course or lake at last.
Bottom in the purifying treatment pond is provided with aeration tube, oxygen is under the pressure of aerator, enter in the aeration tube, in filling substrate, carry out aeration equably by aeration tube, to increase the content of oxygen in water, simultaneously, also discharge oxygen in photosynthesis of plant and the root system oxygen therapy process, for the aerobic microbiological activity provides oxygen source to water body.
In the whole decontamination process, current are positioned at below the face of land all the time, and the ground table top is amphibious plant, and total system is similar to ecological park in appearance, plays landscape effect preferably.In the normal course of operation, the gate valve on water body water inlet pipe, water inlet pipe and the rising pipe is in opened condition, and the gate valve on the back flushing water pipe is in closing condition.
Behind long-play, the water body of closing water body control gate valve, water distribution control gate valve, water outlet control gate valve and back flushing control gate valve control purifying treatment pond flows to, sewage water body pending in the purifying treatment pond is found time from maintenance emptying water pipe with pump, make the purifying treatment pond be in dry state.
Open back flushing control gate valve and water outlet control gate valve, start the diversion water pump and introduce the high pressure water body, the high pressure water body is entered by the back flushing water pipe by the water outlet of diversion water pump and is arranged on bottom, purifying treatment pond and is communicated with water pipe, and the high pressure water body is from carrying out back flushing to being communicated with downstream tank and the up pond that water pipe sprays into the purifying treatment pond.
The high pressure water body washes the filling substrate in downstream tank and the up pond, take the top in downstream tank and up pond at following sedimentary mud of flow action, mud under the top of downstream tank is rinsed and high pressure water body flow into the top in up pond by the back flushing communicating aperture.Be rinsed the mud that gets off and high pressure water in downstream tank and the up pond and enter and receive water pipe and discharge from rising pipe, circulation flushing repeatedly, mud is rinsed well in downstream tank and up pond.
Close diversion water pump and back flushing control gate valve, open water body control sluice valve and water distribution control gate valve, start the diversion water pump and introduce pending sewage water body, carry out sewage purification and handle.
Behind system's long-play, for preventing the alluvial of organic pollutant and water body suspended substance system is resulted in blockage, adopt back-purge system of the present invention.Backwash tube one end connects the diversion water pump, and the other end connects water pipe.Before and after the system overhaul, by the effective pump depletion of maintenance emptied of water, during back flushing, diversion water pump and connection water pipe become the part of back-purge system the sewage water body in the purifying treatment pond.
Directly provide the high pressure water body by the diversion water pump to the back flushing water pipe, high pressure water enters the connection water pipe through backwash tube, evenly spray in ground downstream tank and the up pond by being communicated with water pipe, mud is brought into the top of hypothallus under flow action, in backwash process, backwashing water in the downstream tank enters up pond by the back flushing communicating aperture, is discharged by rising pipe at last.
Winter operation purifying treatment pond, water distribution control gate valve before ice formation period on the adjustment water inlet pipe and the water outlet control gate valve on the rising pipe, control downstream tank water body and up pond water body into and out of flow, close the back flushing control gate valve on the back flushing water pipe, regulation of level in downstream tank and the up pond to more than the filling substrate, is formed open fire on the top in downstream tank and up pond.
After treating that the top layer water surface freezes, again the water level in downstream tank and up pond is reduced to below the water distributor, below the ice face of the top in downstream tank and up pond with form air barrier more than the water surface, reach the Winter protection effect, purifying treatment sewage water body is still normally moved in the purifying treatment pond.
When moving in the winter time, at first, before freezing by control downstream tank of the control sluice on water inlet pipe and the rising pipe and up pond into and out of flow, the regulation of level in the pond is formed open fire to 30~40cm more than the filling substrate, the elevation of water surface in purifying treatment pond can be according to local cryosphere thickness setting.Treat the water level in purifying treatment pond to be reduced to below the water distributor after the top layer water surface freezes, form an air barrier this moment under the ice face and more than the water surface, play the Winter protection effect again, and the following purifying treatment of ice face pond is normally operation still.
Before the ice face formed: the gate valve on water body water inlet pipe and the water inlet pipe was in opened condition, gate valve on the back flushing water pipe is in closing condition, the semi-closed state of gate valve on the rising pipe, the degree of closing determines according to the volume in pond and flooding velocity, guarantees the open fire water surface relatively stable on filling substrate top.
The ice face forms the back: the water level in purifying treatment pond is transferred to below the water distributor, and the gate valve on water body water inlet pipe, water inlet pipe and the rising pipe is in opened condition, and the gate valve on the back flushing water pipe is in closing condition.
The present invention is back flushing, aeration type undercurrent wetland water body purification apparatus and water body purification method.Can overcome the relatively more fragile shortcoming of natural wetland, have the rate of load condensate height, floor space is little, treatment effect good, nitrogen phosphorus removes that ability is strong, anti impulsion load, be difficult for growing advantages such as mosquitos and flies, during-operation service convenient management, engineering capital construction and running expense are low, because water body flows at below ground, sanitary condition is good, can combine closely with urban landscape construction, as park green land, can play the effect of beautifying the environment simultaneously, improve the view of adjoining area.Aeration process at the bottom of the combination water of the present invention, the high-effective microorganism treatment technology, backwashing technology, many technology such as preventing freeze in winter technology and current wetland technology are integrated, by water-bed aeration and high-effective microorganism technology, improve the purification of water quality ability of microorganism in the current wetland, and the content of dissolved oxygen in the increase water outlet, by high-water operation in winter, behind the ice-bound layer of the artificial formation in current wetland top, reduce the wetland water level again, form the air-isolation layer at ice-bound layer and wetland surface, play heat insulation effect, guarantee that wetland winter normally moves, simultaneously, the application of backwashing technology prevents the obstruction of wetland inside, the operation steady in a long-term of assurance system.Compare with traditional waste water treatment process, the present invention has reduced investment, duration is short, the characteristics of instant effect, water treatment running cost is low, convenient management, the treatment system face of land are exactly an ecological park, can combine closely with urban landscape construction, help urban afforestation, when realizing water body purification, reach the purpose in beautification and greening city, current wetland is most of to be handled below the face of land, be more suitable in North China than cold weather, all good throughout the year, and be difficult for to produce stink and mosquito than natural wetland treatment effect, solve the technical barrier that the Ecological Disposal technology can not widespread use in the north.The water quality of water outlet is good, water outlet after the processing on average can improve 1~2 grade, reach the requirement of surface water IV class water quality standard, can directly enter reservoir and river course, but the fast processing hydration phenomena that summer, blue algae bloom caused, recover the self-purification function of water body, be applicable to the processing of water body in large water quality deterioration accident.The design of back-purge system can effectively prevent the system jams that the alluvial of organic matter and suspended contaminant causes, and operation life is long.Efficient dominant bacteria and the application of aeration process in artificial swamp, two integrated application of technology improve processing efficiency greatly, and the removal of look, flavor obviously improves.The present invention can adopt vertical up and down seepage flow secondary, three grades and even multiple-stage treatment pattern, makes sewage pass through the process of anaerobism and oxygen consumption repeatedly in processed process, at utmost improves treatment effect.
Description of drawings
Below in conjunction with drawings and Examples to the detailed description of the invention.
The synoptic diagram of Fig. 1 undercurrent wetland water body cleaning treatment system
1 diversion water pump, 2 regulation of level ponds, 3 water inlet pipes, 4 water distributions control gate valve, 5 water distributors, 6 downstream tank, 7 filling substrates, 8 are communicated with water pipe, 9 up ponds, 10 receive water pipe, 11 rising pipes, 12 aerators, 13 aeration tubes, 14 back flushing water pipes, 15 back flushing communicating apertures, 16 maintenance emptying water pipes, 17 kind of plant, 18 under meters, 19 purifying treatment ponds, 20 separate pool wall, 21 water body water inlet pipes, 22 water bodys control gate valve, 23 back flushinges control gate valve, 24 water outlets control gate valve
Embodiment
Embodiment 1
Purifying treatment pond (19) integral body is a cube casing shape, purifying treatment pond (19) is provided with by the middle part separates pool wall (20), purifying treatment pond (19) are separated into downstream tank (6) and up pond (9), even filling filling substrate (7) in downstream tank (6) and up pond (9), the pool wall in purifying treatment pond (19) is higher than the upper surface of filling substrate (7), filling filling substrate (7) will not have water distributor (5) and received water pipe (10), the upper end in purifying treatment pond (19) is below the face of land, and water body moves in the purifying treatment pond (19) under the face of land all the time.
Amphibious kind of plant (17) is all planted on filling substrate (7) top in downstream tank (6) and up pond (9), the root system of kind of plant (17) is tied in the filling substrate (7) of downstream tank (6) and up pond (9), the root system of filling substrate (7) fixed race plant (17), the top of separating pool wall (20) is provided with 1 above back flushing communicating aperture (15) at least, and back flushing communicating aperture (15) is communicated with downstream tank (6) and up pond (9).
The top of downstream tank (6) is provided with 1 above water distributor (5) at least, the infiltration hole is set on the water distributor (5), water distributor (5) runs through the top of downstream tank (6), one end of water distributor (5) is connected with the other end of water inlet pipe (3), water distributor (5) is connected with water inlet pipe (3), water body enters in the downstream tank (6) from the infiltration hole on the water distributor (5), and water body is filling substrate (7) because action of gravity is from top to bottom slowly flowed through, and arrives the bottom of downstream tank (6).
One end of water inlet pipe (3) is connected with the opposite side top of water equalizing tank (2), one end of water inlet pipe (3) and regulation of level pond (2) connect, the top in regulation of level pond (2) is higher than the upper end of purifying treatment pond (19), the water level and the flow of the water body in purifying treatment pond (19) stablized in regulation of level pond (2), water body in the regulation of level pond (2) enters in the water distributor (5) by water inlet pipe (3) gravity flow under the head pressure effect, flows into by water distributor (5) in the downstream tank (6) in purifying treatment pond (19).
The other end of water inlet pipe (3) is provided with control gate valve (4) and under meter (18), and control and demonstration regulation of level pond (2) water inlet pipe (3) of flowing through enters the flow direction and the flow of the water body of water distributor (5).
One side of water equalizing tank (2) is provided with water body water inlet pipe (21), the other end of water body water inlet pipe (21) is connected with a side of water equalizing tank (2), the other end of water body water inlet pipe (21) and regulation of level pond (2) connect, one end of water body water inlet pipe (21) is connected with the water outlet of diversion water pump (1), in regulation of level pond (2), carry water body, water body control gate valve (22) is set between the other end of water body water inlet pipe (21) and the water equalizing tank (2), the control water body enters the flow direction and the flow of water equalizing tank (2), and the water-in of diversion water pump (1) is connected with water body.
One end of back flushing water pipe (14) is connected with the water outlet of diversion water pump (1), downstream tank (6) is carried backwashing water, the other end of back flushing water pipe (14) is connected with an end of the connection water pipe (8) of bottom, following shape pond (6), the other end of back flushing water pipe (14) is provided with back flushing control gate valve (23), and control enters the flow direction and the flow of the back flushing water body of downstream tank (6) and up pond (9).
The bottom of downstream tank (6) and up pond (9) is provided with at least along downstream tank (6) and up pond (9) bottom and is communicated with water pipe (8) more than 1, be communicated with the bottom that water pipe (8) runs through downstream tank (6) and up pond (9), connection water pipe (8) is communicated with downstream tank (6) and up pond (9), arrives downstream tank (6) bottom water body because the head pressure of downstream tank (6) enters the bottom of up pond (9) by connection water pipe (8).
The top in up pond (9) is provided with receives water pipe (10), receipts water pipes (10) run through the top of up pond (9), the top in up pond (9) sets out water pipe (11), the other end of receiving water pipe (10) is connected with rising pipe (11), rising pipe (11) the other end sets out water management gate valve (24), and the flow direction and the flow of the water outlet of water pipe (10) are received in water outlet control gate valve (24) control.
Enter water body in the up pond (9) because action of gravity is slowly flowed through from the bottom to top filling substrate (7), arrive the top of up pond (9), enter the receipts water pipe (10) on top, up pond (9), enter rising pipe (11) and discharge by receiving water pipe again, as shown in Figure 1.
Embodiment 2
One side in up pond (9) is provided with maintenance evacuated tube (16), maintenance evacuated tube (16) is extended through the bottom of up pond (9) by the top of up pond (9), the infiltration hole is set on the tube wall of maintenance evacuated tube (16), between turn(a)round by the find time water body of purifying treatment pond (19) of maintenance emptying water pipe (16), as shown in Figure 1.
Embodiment 3
The side in purifying treatment pond (19) is provided with aerator (12), the bottom in purifying treatment pond (19) is provided with 1 above aeration tube (13) at least, aeration tube (13) runs through the bottom of downstream tank (6) and up pond (9), the other end of aeration tube (13) is connected with the outlet of aerator (12), aerator (12) by aeration tube (13) equably the filling substrate (7) in downstream tank (6) and up pond (9) carry out aeration, increase the content of dissolved oxygen in the water body, as shown in Figure 1.
Embodiment 4
The sectional area in purifying treatment pond (19) is rectangle, trapezoidal, circular, semicircle, Polygons, irregular polygon, adopts at least more than a kind, as shown in Figure 1.
Embodiment 5
Purifying treatment pond (19) is made of downstream tank (6) more than 1 group and up pond (9) at least, carries out multiple treatment and purification water body.Purifying treatment pond (19) is connected by the polyphone of the purifying treatment pond (19) more than 2 at least, carries out multiple treatment and purification water body, as shown in Figure 1.
Embodiment 6
Filling substrate (7) is rubble, haydite, volcano basalt, and particle diameter is 10-15mm, adopts at least more than a kind, as shown in Figure 1.
Embodiment 7
The kind of plant (17) on top, purifying treatment pond (19) is amphibious plant, amphibious plant is adopted emergent in the waterplant, emergent is wilson iris, Spiked Loosestrife, skirret, cattail, Scirpus tabernaemontani, Canna generalis Bailey, plants at least more than a kind, as shown in Figure 1.
Embodiment 8
Open water body control sluice valve (22), water distribution control gate valve (4) and water outlet control gate valve (24), close the back flushing control gate valve (23) on the back flushing water pipe (14), starting diversion water pump (1) passes through pending sewage water body in water body water inlet pipe (21) the suction regulation of level pond (2), the water level of the interior water body in regulation of level pond (2) reaches the port of regulation of level pond (2) top water inlet pipe (3), water body in the regulation of level pond (2) flows into water inlet pipe (3) by the port of water inlet pipe (3) under the head pressure effect, water body enters in the water distributor (5) of downstream tank (6) by water inlet pipe (3) gravity flow, the top of downstream tank (6) to downstream tank (6) in water distribution.
Water body in the inflow downstream tank (6) is filling substrate (7) because action of gravity is from top to bottom slowly flowed through, and arrives the bottom of downstream tank (6).
The root system and the filling substrate (7) of the top kind of plant (17) of downstream tank (6) adhere to carrier for microorganism provides in filling substrate (7) process of the downstream tank of flowing through (6), microorganism forms microbial film at the root system of kind of plant (17) and the surface of filling substrate (7), the pollutent in the degraded water body.After water body arrived downstream tank (6) bottom, because downstream tank (6) head pressure, water body entered the bottom of up pond (9) by the several connection water pipes (8) that are arranged on downstream tank (6) bottom.
Enter slowly flow through the from the bottom to top filling substrate (7) of up pond (9) of up pond (9) water body, the root system and the filling substrate (7) of the top kind of plant (17) in up pond (9) adhere to carrier for microorganism provides in filling substrate (7) process of up pond (9) of flowing through, microorganism forms microbial film at the root system of kind of plant (17) and the surface of filling substrate (7), continues the pollutent in the degraded water body.When the top that water body arrives up pond (9) flows into the receipts water pipe (10) on top, up pond (9), the water body that flows in the receipts water pipe (10) on top, up pond (9) is discharged by rising pipe (11), as shown in Figure 1.
Embodiment 9
In the water body operational process, the lateral aerator in purifying treatment pond (19) (12), by aeration tube (13) equably the filling substrate (7) in downstream tank (6) and up pond (9) carry out aeration, increase the content of dissolved oxygen in the water body, as shown in Figure 1.
Embodiment 10
Behind long-play, the water body of closing water body control gate valve (22), water distribution control gate valve (4), water outlet control gate valve (24) and back flushing control gate valve (23) control purifying treatment pond (19) flows to, pending sewage water body in purifying treatment pond (19) is found time from maintenance emptying water pipe (16) with pump, make the purifying treatment pond be in dry state.
Open back flushing control gate valve (23) and water outlet control gate valve (24), start diversion water pump (1) and introduce the high pressure water body, the high pressure water body is entered by back flushing water pipe (14) by the water outlet of diversion water pump (1) and is arranged on bottom, purifying treatment pond (19) and is communicated with water pipe (8), and the high pressure water body is from carrying out back flushing to being communicated with downstream tank (6) and up pond (9) that water pipe (8) sprays into purifying treatment pond (19).
The high pressure water body is to the flushing of the filling substrate (7) in downstream tank (6) and up pond (9), take the top of downstream tank (6) and up pond (9) at following sedimentary mud of flow action, be rinsed the mud that gets off and high pressure water body flow into up pond (9) by back flushing communicating aperture (15) top on the top of downstream tank (6).Be rinsed the mud that gets off and high pressure water in downstream tank (6) and up pond (9) and enter and receive water pipes (10) and discharge from rising pipe (11), circulation flushing repeatedly, mud is rinsed well in downstream tank (6) and up pond (9).
Close diversion water pump (1) and back flushing control gate valve (23), open water body control sluice valve (22) and water distribution control gate valve (4), start diversion water pump (1) and introduce pending sewage water body, carry out sewage purification and handle, as shown in Figure 1.
Embodiment 11
Winter operation purifying treatment pond (19), before ice formation period, adjust water distribution control gate valve (4) on the water inlet pipe (3) and the water outlet on the rising pipe (11) and control gate valve (24), control downstream tank (6) water body and up pond (9) water body into and out of flow, close the back flushing control gate valve (23) on the back flushing water pipe (14), regulation of level in downstream tank (6) and up pond (9) to more than the filling substrate (7), is formed open fire on the top of downstream tank (6) and up pond (9).
After treating that the top layer water surface freezes, again the water level of downstream tank (6) and up pond (9) is reduced to below the water distributor (5), formation air barrier below the ice face of the top of downstream tank (6) and up pond (9) and more than the water surface, reach the Winter protection effect, purifying treatment sewage water body is still normally moved in purifying treatment pond (19), as shown in Figure 1.

Claims (2)

1, a kind of back flushing, aeration type undercurrent wetland water body purification apparatus, it is characterized in that purifying treatment pond (19) integral body is a cube casing shape, the middle part in purifying treatment pond (19) is provided with separates pool wall (20), purifying treatment pond (19) are separated into downstream tank (6) and up pond (9), even filling filling substrate (7) in downstream tank (6) and up pond (9), the pool wall in purifying treatment pond (19) is higher than the upper surface of filling substrate (7), filling filling substrate (7) will not have water distributor (5) and received water pipe (10), the upper end in purifying treatment pond (19) is below the face of land, and water body moves in the purifying treatment pond (19) under the face of land all the time; Amphibious kind of plant (17) is all planted on filling substrate (7) top in downstream tank (6) and up pond (9), the root system of kind of plant (17) is tied in the filling substrate (7) of downstream tank (6) and up pond (9), the root system of filling substrate (7) fixed race plant (17), the top of separating pool wall (20) is provided with 1 back flushing communicating aperture (15) at least, and back flushing communicating aperture (15) is communicated with downstream tank (6) and up pond (9); The top of downstream tank (6) is provided with 1 water distributor (5) at least, the infiltration hole is set on the water distributor (5), water distributor (5) runs through the top of downstream tank (6), one end of water distributor (5) is connected with an end of water inlet pipe (3), water distributor (5) is connected with water inlet pipe (3), water body enters in the downstream tank (6) from the infiltration hole on the water distributor (5), and water body is filling substrate (7) because action of gravity is from top to bottom slowly flowed through, and arrives the bottom of downstream tank (6); The other end of water inlet pipe (3) is connected with a upper lateral part of regulation of level pond (2), the other end of water inlet pipe (3) and regulation of level pond (2) connect, the top in regulation of level pond (2) is higher than the upper end of purifying treatment pond (19), the water level and the flow of the water body in purifying treatment pond (19) stablized in regulation of level pond (2), water body in the regulation of level pond (2) enters in the water distributor (5) by water inlet pipe (3) gravity flow under the head pressure effect, flows into by water distributor (5) in the downstream tank (6) in purifying treatment pond (19); The other end of water inlet pipe (3) is provided with water distribution control gate valve (4) and under meter (18), and control and demonstration regulation of level pond (2) water inlet pipe (3) of flowing through enters the flow direction and the flow of the water body of water distributor (5); One side in regulation of level pond (2) is provided with water body water inlet pipe (21), one end of water body water inlet pipe (21) is connected with a side of regulation of level pond (2), one end of water body water inlet pipe (21) and regulation of level pond (2) connect, the other end of water body water inlet pipe (21) is connected with the water outlet of diversion water pump (1), in regulation of level pond (2), carry water body, water body control gate valve (22) is set between one end of water body water inlet pipe (21) and regulation of level pond (2), the control water body enters the flow direction and the flow in regulation of level pond (2), and the water-in of diversion water pump (1) is connected with water body; One end of back flushing water pipe (14) is connected with the water outlet of diversion water pump (1), downstream tank (6) is carried backwashing water, the other end of back flushing water pipe (14) is connected with an end of the connection water pipe (8) of downstream tank (6) bottom, the other end of back flushing water pipe (14) is provided with back flushing control gate valve (23), and control enters the flow direction and the flow of the back flushing water body of downstream tank (6) and up pond (9); The bottom of downstream tank (6) and up pond (9) is provided with 1 connection water pipe (8) at least along downstream tank (6) and up pond (9) bottom, be communicated with the bottom that water pipe (8) runs through downstream tank (6) and up pond (9), connection water pipe (8) is communicated with downstream tank (6) and up pond (9), arrives downstream tank (6) bottom water body because the head pressure of downstream tank (6) enters the bottom of up pond (9) by connection water pipe (8); The top in up pond (9) is provided with receives water pipe (10), receipts water pipes (10) run through the top of up pond (9), the top in up pond (9) sets out water pipe (11), one end of receiving water pipe (10) is connected with rising pipe (11), rising pipe (11) one ends set out water management gate valve (24), and the flow direction and the flow of the water outlet of water pipe (10) are received in water outlet control gate valve (24) control; Because the action of gravity of the water body of downstream tank (6), force the water body that enters in the up pond (9) filling substrate (7) of slowly flowing through from the bottom to top, arrive the top of up pond (9), enter the receipts water pipe (10) on top, up pond (9), enter rising pipe (11) discharge by receiving water pipe again; One side in up pond (9) is provided with maintenance evacuated tube (16), maintenance evacuated tube (16) is extended through the bottom of up pond (9) by the top of up pond (9), the infiltration hole is set on the tube wall of maintenance evacuated tube (16), between turn(a)round by the find time water body of purifying treatment pond (19) of maintenance emptying water pipe (16); The side in purifying treatment pond (19) is provided with aerator (12), the bottom in purifying treatment pond (19) is provided with 1 aeration tube (13) at least, aeration tube (13) runs through the bottom of downstream tank (6) and the bottom of up pond (9), one end of aeration tube (13) is connected with the outlet of aerator (12), aerator (12) by aeration tube (13) equably the filling substrate (7) in downstream tank (6) and up pond (9) carry out aeration, increase the content of dissolved oxygen in the water body.
2, back flushing according to claim 1, aeration type undercurrent wetland water body purification apparatus, the cross-sectional shape that it is characterized in that described purifying treatment pond (19) are rectangle, trapezoidal, circular, semicircle, irregular polygon, adopt a kind at least; Purifying treatment pond (19) is made of 1 group of downstream tank (6) and up pond (9) at least, carries out multiple treatment and purification water body; Connect with at least 2 purifying treatment ponds (19) polyphone, carry out multiple treatment and purification water body; Filling substrate (7) is rubble, haydite, and particle diameter is 10-15mm, adopts a kind at least; The kind of plant (17) on filling substrate (7) top in downstream tank (6) and up pond (9) is amphibious plant, amphibious plant is adopted emergent in the waterplant, emergent is wilson iris, Spiked Loosestrife, skirret, cattail, Scirpus tabernaemontani, Canna generalis Bailey, plants a kind at least.
CNB2007100564926A 2007-01-19 2007-01-19 Backwash, aeration type undercurrent wetland water body purification apparatus and water body purification method CN100497207C (en)

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CN101704585B (en) * 2009-11-06 2011-07-27 山东大学 Progressively reduced aeration subsurface constructed wetland

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CN101955263B (en) * 2010-10-24 2012-06-27 江苏技术师范学院 Sewage treatment system of vertical-flow subsurface flow-type constructed wetland and sewage treatment method thereof
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* Cited by examiner, † Cited by third party
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