CN211620254U - Water body pollution treatment system based on coupling biological membrane - Google Patents
Water body pollution treatment system based on coupling biological membrane Download PDFInfo
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- CN211620254U CN211620254U CN201921063981.9U CN201921063981U CN211620254U CN 211620254 U CN211620254 U CN 211620254U CN 201921063981 U CN201921063981 U CN 201921063981U CN 211620254 U CN211620254 U CN 211620254U
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Abstract
The utility model discloses a water pollution treatment system based on coupling biomembrane. The system comprises a rotational flow grit chamber, a regulation and storage tank connected with the rotational flow grit chamber through a pipeline, a high-speed sedimentation tank connected with the regulation and storage tank through a pipeline, and a high-efficiency coupling biomembrane tank connected with the high-speed sedimentation tank through a pipeline; the system completes the pollution treatment of the water body by enabling the water body to sequentially flow through the rotational flow sand setting device, the regulation and storage tank, the high-speed sedimentation tank and the high-efficiency coupling biomembrane tank. The utility model also discloses a water pollution treatment method. The utility model discloses a system can be under the very limited condition in place space, the initial stage rainwater of mouth is arranged to the high-efficient processing rainwater to solve the water quality maintenance problem of peripheral water in non-rainy season.
Description
Technical Field
The utility model relates to a rainwater pollution treatment field especially relates to an including biomembrane pond water pollution treatment system.
Background
Along with the construction of sponge cities, the treatment of black and odorous water and other concepts, people are increasingly deeply involved. The problems of non-point source pollution and water body pollution caused by initial rainwater are more and more important. In the 2 nd month of 2015, the water pollution control action plan (abbreviated as 'ten items of water') approved by the conference of the general affairs committee of the central political administration is provided, and the conditional region needs to promote the initial rainwater collection, treatment and resource utilization. The treatment strength of the black and odorous water body is increased, the target of black and odorous water body treatment is completed before 2020, and the black and odorous water body in the built-up areas of the places and above is controlled within 10%. How to effectively treat initial rainwater and regional water pollution becomes a problem to be solved urgently.
A large number of researches show that the particles are main carriers of various pollutants in runoff rainwater, play a role in adsorbing the pollutants in the early stage, conveying the pollutants in the middle stage and settling and releasing the pollutants in the later stage in the runoff rainwater, and are important water quality indexes influencing the transparency and turbidity of the water body.
The initial rainwater has: 1. 2, large water quantity change, 3, large pollutant content change, low biodegradability and the like; the initial rainwater runoff pollution control is widely adopted at present to directly abandon the rainwater to a sewage treatment plant, and the method considers whether the treatment load of the sewage treatment plant is increased or not and has no influence on the normal sewage treatment effect.
Another common method is to arrange an artificial wetland method near the rainwater drainage outlet, the artificial wetland is suitable for urban ecological construction, and the artificial wetland has obvious effect on treating initial rainwater entering a river channel in urban construction. But the technology has large floor area, is limited to a specific area and limits the application range of the technology; secondly, the ecological balance of the wetland water is easily damaged due to high load impact of rainwater, and the biodiversity is reduced sharply; moreover, high suspended matter content causes clogging of the wetland percolation system, greatly reducing its processing capacity.
SUMMERY OF THE UTILITY MODEL
The technical problem that this application will be solved provides a water pollution treatment system. The system can efficiently treat initial rainwater at the rainwater drainage port under the condition of extremely limited site space and solve the problem of water quality maintenance of peripheral water bodies in non-rainy seasons.
Another technical problem to be solved by the present application is to provide a water body pollution treatment method. The method integrates a rotational flow sand setting device, a regulation and storage tank, an ultra-high speed sedimentation tank and a high-efficiency coupling biomembrane tank to treat initial rainwater or polluted water body, and overcomes the defects of large floor area, low pollution load and the like of the existing treatment method.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a water body pollution abatement system, the system comprising:
the cyclone-type sand setting device is provided with a sand setting tank,
a regulating and storing tank connected with the rotational flow sand setting device through a pipeline,
a high-speed sedimentation tank connected with the storage tank through a pipeline, an
The high-efficiency coupling biological membrane pool is connected with the high-speed sedimentation pool through a pipeline;
the system completes the pollution treatment of the water body by enabling the water body to sequentially flow through the rotational flow sand setting device, the regulation and storage tank, the high-speed sedimentation tank and the high-efficiency coupling biomembrane tank.
As a further improvement of the technical solution, the cyclone sand settling vessel comprises:
the device comprises a cyclone sand setting device water inlet, a cyclone sand setting device water outlet, a cleaning opening, a cyclone separation device and a mud setting area;
the water inlet and the water outlet of the rotational flow grit chamber are positioned on the side wall of the rotational flow grit chamber;
the cleaning port is positioned at the top of the rotational flow sand setting device;
the cyclone separation device is a cylindrical barrel and is positioned in the middle of the cyclone sand settling device;
the silt settling area is positioned at the bottom of the rotational flow grit chamber.
As a further improvement of the technical solution, the storage tank includes:
a water inlet, a water outlet, a lift pump and a first valve of the storage tank;
the water inlet and the water outlet of the storage tank are positioned on the side wall of the storage tank;
the lifting pump is positioned on the water outlet side of the storage tank;
the first valve is positioned on a water inlet pipeline of the storage tank.
As a further improvement of the technical scheme, the high-speed sedimentation tank comprises:
a high-speed sedimentation tank water inlet, a high-speed sedimentation tank water outlet, a mixing zone, a reaction zone and a sedimentation zone;
the water inlet of the high-speed sedimentation tank is positioned on the side wall of the mixing area;
the water outlet of the high-speed sedimentation tank is positioned on the side wall of the sedimentation zone;
the mixing zone, the reaction zone and the precipitation zone are connected in sequence;
the settling zone comprises an inclined plate settling zone positioned at the upper part of the settling zone and a sludge settling zone positioned at the bottom of the settling zone.
As a further improvement of the technical scheme, the high-efficiency coupling biological membrane pool comprises:
the water inlet of the high-efficiency coupling biological membrane pool, the water outlet of the high-efficiency coupling biological membrane pool and the hollow fiber aeration membrane;
the water inlet and the water outlet of the high-efficiency coupling biomembrane pond are positioned on the side wall of the high-efficiency coupling biomembrane pond;
the hollow fiber aeration membrane is distributed in the high-efficiency coupling biological membrane tank.
As the further improvement of the technical scheme, the regulation and storage tank further comprises an internal flushing device, wherein the internal flushing device comprises a flushing pipeline, a sludge discharge pipeline for discharging flushing sewage and automatic control equipment.
As a further improvement of the technical scheme, the high-speed sedimentation tank also comprises a medicament supply device, the medicament supply device comprises an automatic medicament feeding device, and the addition amount of the medicament is automatically controlled according to the flow of the water body.
As a further improvement of the technical scheme, the efficient coupling biological membrane pool also comprises an aeration device, wherein the aeration device comprises an air blower, an aeration pipeline and an automatic control device, and the aeration rate is automatically controlled according to the flow of the water body.
As a further improvement of the technical solution, the system further comprises:
a water inlet pipeline of the water body to be treated, which is connected with the water inlet end of the rotational flow grit chamber; and
a water body circulating pipeline for connecting a water body inlet pipeline to be treated with the treated water body;
the water inlet pipeline of the water body to be treated is provided with a second valve which is positioned before the water circulating pipeline and the water inlet pipeline of the water body to be treated are crossed;
and a third valve is arranged on the water body circulating pipeline.
As a further improvement of the technical scheme, the water body is initial rainwater.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the method for treating the water pollution by adopting the water pollution treatment system sequentially comprises the following steps:
a step of separating particles by the water body entering a cyclone sand setting device;
the water body enters a storage and adjustment pool for storage and adjustment;
a step of flocculating and settling the water body in a high-speed sedimentation tank; and
and (3) removing pollutants from the water body in a high-efficiency coupling biological membrane pool.
As a further improvement of the technical solution, the method further comprises:
and realizing the autonomous switching treatment of the water body to be treated and the circulating water body.
As a further improvement of the technical scheme, the step of separating the particles by the cyclone sand settling device comprises the following steps: the water body is introduced into the cyclone sand settling device from the water inlet of the cyclone sand settling device, and enters the cyclone separation device along the tangential direction in the cyclone sand settling device for separation, so that the water body rises, the particulate matters are deposited in a mud settling area and are periodically cleaned through a cleaning opening, and the water body for removing the particulate matters is discharged from a water outlet.
As a further improvement of the technical solution, the step of regulating the storage by the storage tank includes: introducing the effluent of the rotational flow grit chamber into a regulating and storing tank from a water inlet of the regulating and storing tank, and regulating and storing the water in the regulating and storing tank; when the water level in the regulating storage tank reaches the designed water level, closing a first valve on a water inlet pipeline of the regulating storage tank, and stopping water inlet; the water regulated and stored in the regulating and storing tank is discharged from the water outlet after being lifted by the lifting pump.
As a further improvement of the technical scheme, the step of performing flocculation and precipitation in the high-speed sedimentation tank comprises the following steps: the effluent of the storage tank is introduced into the high-speed sedimentation tank from a water inlet of the high-speed sedimentation tank, pollutants in water enter the reaction zone for flocculation after being fully mixed with the flocculating agent in the mixing zone, the water body forming the flocculating body enters the sedimentation zone, the flocculating body is subjected to sedimentation separation in the inclined plate sedimentation zone at the upper part in the sedimentation zone, sludge is deposited in the bottom sludge settling zone, and the treated water body is discharged through a water outlet.
As a further improvement of the technical scheme, the step of removing the pollutants by the high-efficiency coupling biological membrane pool comprises the following steps: the water discharged from the high-speed sedimentation tank is introduced into the high-efficiency coupling biological membrane tank from a water inlet of the high-efficiency coupling biological membrane tank, a hollow fiber aeration membrane is used as a microbial membrane attachment carrier and is used for aeration of the biological membrane, pollutants in the water body are converted into microbial cells which are fixed on the biological membrane or decomposed into inorganic metabolites, so that the water body is purified, and the treated water body is discharged into regional water body from a water outlet.
As a further improvement of the technical scheme, the step of realizing the autonomous switching treatment of the water body to be treated and the circulating water body comprises the following steps: when the water body to be treated is treated, a second valve on a water inlet pipeline of the water body to be treated is opened, a third valve on a water body circulating pipeline is closed, initial rainwater is introduced into the treatment system from an inlet, and the treated rainwater is discharged into regional water bodies from an outlet; when the circulating water is treated, the third valve on the water circulating pipeline is opened, the second valve on the water inlet pipeline of the water to be treated is closed, and the regional water is introduced into the treatment system from the inlet and is discharged into the regional water again from the outlet after repeated treatment.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model integrates the rotational flow sand setting device, the regulation and storage tank, the ultra-high speed sedimentation tank and the high-efficiency coupling biomembrane tank into a system, can solve the defects of large occupied area, low pollution load and the like in the prior art under the condition of extremely limited field space, efficiently treat the initial rainwater at the rainwater drainage port and solve the problem of water quality maintenance of the peripheral water body in non-rainy seasons;
(2) the system of the utility model adopts the high-efficiency coupling biological membrane pool, so that the system can effectively remove most pollutants in the water body, including N, P and other eutrophication substances, and the effluent quality is good;
(3) the system of the utility model adopts the rotational flow sand setting device and the high-speed sedimentation tank, which can effectively remove SS (solid suspended solids) and prevent the subsequent processing unit from being blocked;
(4) the system of the utility model adopts the storage tank, so that the system has stronger adjusting capacity for the change of the water volume of the incoming water;
(4) the utility model discloses a system is owing to adopt high-speed sedimentation tank for the system has reduced area when guaranteeing the treatment effect.
Drawings
FIG. 1 is a schematic top view of a water pollution treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a water pollution treatment system according to an embodiment of the present invention;
fig. 3 is a process flow chart of the water pollution treatment method in the embodiment of the present invention.
Description of reference numerals:
10-cyclone sand setting device, 11-cyclone sand setting device water inlet, 12-cyclone sand setting device water outlet, 13-cleaning opening, 14-cyclone separation device, 15-cyclone sand setting device sludge settling area; 20-a regulation pool, 21-a regulation pool water inlet, 22-a regulation pool water outlet, 23-a lift pump and 24-a first valve; 30-a high-speed sedimentation tank, 31-a high-speed sedimentation tank water inlet, 32-a high-speed sedimentation tank water outlet, 33-a mixing zone, 34-a reaction zone, 35-a sedimentation zone, 351-an inclined plate sedimentation zone, 352-a sedimentation zone sludge sedimentation zone, 40-a high-efficiency coupling biomembrane tank, 41-a high-efficiency coupling biomembrane tank water inlet, 42-a high-efficiency coupling biomembrane tank water outlet, 43-a hollow fiber aeration membrane, 50-a water body inlet pipeline to be treated, 51-a second valve 5, 60-a water body circulation pipeline, 61-a third valve and 70-regional water body.
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The utility model relates to a water pollution treatment system, the system includes:
the cyclone-type sand setting device is provided with a sand setting tank,
a regulating and storing tank connected with the rotational flow sand setting device through a pipeline,
a high-speed sedimentation tank connected with the storage tank through a pipeline, an
The high-efficiency coupling biological membrane pool is connected with the high-speed sedimentation pool through a pipeline;
the system completes the pollution treatment of the water body by enabling the water body to sequentially flow through the rotational flow sand setting device, the regulation and storage tank, the high-speed sedimentation tank and the high-efficiency coupling biomembrane tank.
The initial rainwater has the outstanding characteristics of large water quantity change, large particle size of suspended solid, large change of pollutant content, low biodegradability and the like. The cyclone sand settling device can remove large solid suspended matters in water, and prevent the suspended matters from blocking subsequent process equipment. It is therefore put in the first step. The regulation and storage tank can play the effect of adjusting and buffering to initial stage rainwater water yield change, can reduce the processing scale of follow-up processing facility, reduce the investment. It is placed in the second step. The high-speed sedimentation tank can further remove suspended solid in water through coagulating sedimentation, and preliminarily remove COD in water, avoid the suspended solid from blocking the high-efficiency coupling biomembrane pond, reduce the pollutant load of the subsequent process, and place the suspended solid in the third step. The efficient coupling biological membrane can realize the removal of total nitrogen and ammonia nitrogen in water through microbial treatment on the premise of realizing the removal of COD (chemical oxygen demand) by controlling the concentration of dissolved oxygen through the cooperation of microorganisms, reduces the risk of water eutrophication, is the key of the whole process flow, and is placed in the fourth step.
The applicant finds that the initial rainwater and water pollution treatment system formed by combining the four processes can achieve the following effects: the change of the initial rainwater quantity is responded, and the design scale of subsequent treatment facilities is reduced; the problem that the total nitrogen and ammonia nitrogen in the water cannot be removed by the traditional physical and chemical treatment of the initial rainwater is solved; the problem of continuous operation of the biological treatment unit in non-rainy seasons is solved; an integrated solution is provided for water quality purification of a water body; the processing system can save land occupation.
The system is integrated by the cyclone sand settling device, the regulation and storage tank, the high-efficiency coupling biomembrane tank and the ultra-high-speed sedimentation tank, can overcome the defects of large occupied area, low pollution load and the like in the prior art under the condition of extremely limited field space, efficiently treat the initial rainwater at the rainwater drainage port and solve the problem of water quality maintenance of peripheral water bodies in non-rainy seasons.
According to certain embodiments of the present application, the cyclone sand settler comprises:
the device comprises a water inlet, a water outlet, a cleaning opening, a cyclone separation device and a mud sedimentation area;
the water inlet and the water outlet are positioned on the side wall of the rotational flow sand setting device;
the cleaning port is positioned at the top of the rotational flow sand setting device;
the cyclone separation device is a cylindrical barrel and is positioned in the middle of the cyclone sand settling device;
the silt settling area is positioned at the bottom of the rotational flow grit chamber.
The sludge settling area is used for storing solid matters separated by the cyclone separation device, and the solid matters are regularly cleaned according to the operation state, if the area is not arranged, the separated solid matters can block the separation device, so that the equipment is failed.
According to some embodiments of the present application, the regulation reservoir comprises:
the water inlet, the water outlet, the lift pump and the first valve;
the water inlet and the water outlet are positioned on the side wall of the storage tank;
the lifting pump is positioned on the water outlet side of the storage tank;
the first valve is positioned on a water inlet pipeline of the storage tank.
First valve is the control flap that initial stage rainwater got into the regulation pond, when the regulation pond reached regulation volume upper limit, can feed back control system with the signal, closes first valve, stops to the regulation pond intaking, and then discharges the rainwater into municipal rainwater pipeline. If not set up this valve, when the regulation pond reached design volume upper limit, can't cut off the inlet tube to regulation pond inhalant canal.
According to certain embodiments of the present application, the high-speed sedimentation tank comprises:
a water inlet, a water outlet, a mixing zone, a reaction zone and a precipitation zone;
the water inlet is positioned on the side wall of the mixing area;
the water outlet is positioned on the side wall of the settling zone;
the mixing zone, the reaction zone and the precipitation zone are connected in sequence;
the settling zone comprises an inclined plate settling zone positioned at the upper part of the settling zone and a sludge settling zone positioned at the bottom of the settling zone.
The sedimentation zone is used for settling flocculating constituents generated by the inlet water which is fully mixed with the flocculating agent in the mixing zone and the reaction zone to a sludge settling zone, so that the aim of removing solid suspended matters in water is fulfilled. Without the adoption of the equipment, the removal of suspended solids can not be realized, and the subsequent treatment process is adversely affected.
According to certain embodiments of the present application, the high efficiency coupling biofilm tank comprises:
a water inlet, a water outlet and a hollow fiber aeration membrane;
the water inlet and the water outlet are positioned on the side wall of the high-efficiency coupling biological membrane pool;
the hollow fiber aeration membrane is distributed in the high-efficiency coupling biological membrane tank.
The hollow fiber aeration membrane is used for providing dissolved oxygen for biological reaction in the high-efficiency coupling biological membrane pool, and is key equipment for ensuring normal running of the biological reaction. If the device is not adopted, the biological reaction cannot be carried out, and the device fails.
According to some embodiments of the application, the regulation pond further comprises an internal flushing device, wherein the internal flushing device comprises a flushing pipeline, a sludge discharge pipeline for discharging flushing sewage and an automatic control device.
The washing unit is used for washing the sedimentary silt in the regulation pond, if do not adopt the device, can cause the bottom of the pool siltation of regulation pond, hardens even, influences the normal operating of regulation pond.
According to some embodiments of the present application, the high-speed sedimentation tank further comprises a drug supply device, the drug supply device comprises an automatic dosing device, and the adding amount of the drug is automatically controlled according to the flow rate of the water body.
The agent supply device is used for adding a flocculating agent into the high-speed sedimentation tank to enable suspended solid in water to pass through flocculating constituents and accelerate sedimentation of the flocculating constituents. If not adopt the device, can lead to the suspended solid settling time to increase to some granule matters that the particle size is less can't deposit, not only increase the area of sedimentation tank, influence treatment effect moreover.
According to certain embodiments of the present application, the high efficiency coupling biological membrane tank further comprises an aeration device, wherein the aeration device comprises an air blower, an aeration pipeline and an automatic control device, and the aeration amount is automatically controlled according to the flow of the water body.
The aeration device is used for providing dissolved oxygen for biological reaction in the high-efficiency coupling biological membrane tank through the hollow fiber aeration membrane, and is key equipment for ensuring normal running of the biological reaction. If the device is not adopted, the biological reaction cannot be carried out, and the device fails.
According to some embodiments of the application, the system further comprises:
a water inlet pipeline of the water body to be treated, which is connected with the water inlet end of the rotational flow grit chamber; and
a water body circulating pipeline for connecting a water body inlet pipeline to be treated with the treated water body;
the water inlet pipeline of the water body to be treated is provided with a second valve which is positioned before the water circulating pipeline and the water inlet pipeline of the water body to be treated are crossed;
and a third valve is arranged on the water body circulating pipeline.
The third valve and the second valve are matched with each other and used for switching the treatment system between two working modes of initial rainwater treatment and water pollution treatment. If the third valve is not arranged, the initial rainwater and the water body water are mixed in the system, and the system operation is influenced.
According to certain embodiments of the present application, the body of water is incipient rain.
The utility model discloses a system includes that initial stage rainwater is handled and water circulation quality of water keeps two kinds of mode, can realize the switching between two kinds of mode through the switching to control second valve and third valve. The two working modes are consistent in process treatment equipment and working mode.
The utility model also discloses a water pollution treatment process method who combines whirl sand setting ware, regulation pond, high-efficient coupling biomembrane pond and hypervelocity sedimentation tank, including following four steps: separating by a cyclone sand setting device, regulating and storing by a regulating and storing tank, flocculating and settling by a high-speed sedimentation tank and removing pollutants by a high-efficiency coupling biomembrane tank.
The method is realized by a system formed by the rotational flow grit chamber, the regulation and storage tank, the high-speed sedimentation tank and the high-efficiency coupling biomembrane tank.
The method comprises the following steps in sequence:
a step of separating particles by the water body entering a cyclone sand setting device;
the water body enters a storage and adjustment pool for storage and adjustment;
a step of flocculating and settling the water body in a high-speed sedimentation tank; and
and (3) removing pollutants from the water body in a high-efficiency coupling biological membrane pool.
According to some embodiments of the application, the method further comprises:
and realizing the autonomous switching treatment of the water body to be treated and the circulating water body.
Further, the step of realizing the autonomous switching treatment of the water body to be treated and the circulating water body comprises the following steps: when the water body to be treated is treated, a second valve on the water inlet pipeline of the water body to be treated is opened, a third valve on the water body circulating pipeline is closed, the water body to be treated is introduced into the treatment system from the inlet, and is discharged into the regional water body from the outlet after being treated; when the circulating water is treated, the third valve on the water circulating pipeline is opened, the second valve on the water inlet pipeline of the water to be treated is closed, and the regional water is introduced into the treatment system from the inlet and is discharged into the regional water again from the outlet after repeated treatment.
The applicant finds that the third valve and the second valve are matched with each other, so that the treatment system can be switched between two working modes of initial rainwater treatment and water pollution treatment. The total nitrogen and ammonia nitrogen in the water can be effectively removed through the biological reaction of the high-efficiency coupling biological membrane pool in rainy season, the risk of water eutrophication is reduced, and the activity of the biological treatment system is ensured while water quality purification is realized by introducing water into the treatment system in non-rainy season.
According to certain embodiments of the present application, the step of the cyclone sand settler performing the particle separation comprises: the water body is introduced into the cyclone sand settling device from the water inlet of the cyclone sand settling device, enters the cyclone separation device in the cyclone sand settling device along the tangential direction, generates rotary motion under the pushing action of water flow, and due to the fact that suspended matters and water are different in density, water with low density rises under the combined action of centrifugal force, centripetal force, buoyancy and fluid drag force, and particulate matters with high density are deposited to a sediment area at the bottom of the equipment and are regularly cleaned through a cleaning opening. The water body for removing the particles is discharged from the water outlet through the flow guide pipe.
The solid matter that the heavy mud district of whirl sand setting ware was stored according to operating condition, needs regularly to be clearly drawn through the scavenge port, if can not in time clearly draw, the solid matter of separation will block up separator, leads to equipment failure.
According to some embodiments of the present application, the step of regulating the storage tank comprises: introducing the effluent of the rotational flow grit chamber into a regulating and storing tank from a water inlet of the regulating and storing tank, and regulating and storing the water in the regulating and storing tank; when the water level in the regulating storage tank reaches the designed water level, closing a first valve on a water inlet pipeline of the regulating storage tank, and stopping water inlet; the water regulated and stored in the regulating and storing tank is discharged from the water outlet after being lifted by the lifting pump.
Because the initial rainwater goes into the regulation and storage tank and adopts the gravity flow mode, consequently the regulation and storage tank adopts the full underground formula, and the buried depth is darker, and the elevator pump is used for promoting the rainwater that stores in the regulation and storage tank to next processing technology, adopts the elevator pump can reduce the buried depth of next processing technology, saves the engineering investment, reduces the management degree of difficulty.
According to certain embodiments of the present application, the step of performing flocculation in the high-speed sedimentation tank comprises: the effluent of the regulation and storage tank is introduced into the high-speed sedimentation tank from a water inlet of the high-speed sedimentation tank, pollutants in water are fully mixed with a flocculating agent in a mixing zone and then enter a reaction zone, contact and collision are carried out under the action of the added flocculating agent to form flocculating constituents, the flocculating constituents enter a sedimentation zone, the flocculating constituents are subjected to sedimentation and separation in an inclined plate sedimentation zone under the action of gravity, sludge is deposited in a sludge sedimentation zone, and the treated water is discharged from a water outlet through a water outlet pipe.
The sedimentation zone is used for settling flocculating constituents generated by the inlet water which is fully mixed with the flocculating agent in the mixing zone and the reaction zone to a sludge settling zone, so that the aim of removing solid suspended matters in water is fulfilled. Without the adoption of the equipment, the removal of suspended solids can not be realized, and the subsequent treatment process is adversely affected.
According to certain embodiments of the present application, the step of efficiently coupling the biofilm tank to remove contaminants comprises: the water outlet of the high-speed sedimentation tank is introduced into the high-efficiency coupling biological membrane tank from a water inlet of the high-efficiency coupling biological membrane tank, a hollow fiber aeration membrane is used as a microbial membrane attachment carrier and is used for aeration of the biological membrane, when sewage flows around the aeration membrane attached with the biological membrane, pollutants in the water body enter the biological membrane under the actions of concentration driving, microbial adsorption and the like, and are utilized by the microorganisms through biological metabolism and proliferation, so that the pollutants in the water body are assimilated into microbial cells which are fixed on the biological membrane or decomposed into inorganic metabolites, and the purification process of the water body is achieved. The treated rainwater body is discharged into the regional water body from the water outlet through the water outlet pipe.
The efficient coupling biological membrane can realize the removal of total nitrogen and ammonia nitrogen in water through microbial treatment on the premise of realizing the removal of COD (chemical oxygen demand) by controlling the concentration of dissolved oxygen through the cooperation of microorganisms, reduces the risk of water eutrophication, and is the key of the whole process flow.
The following examples further illustrate the invention.
FIG. 1 is a schematic top view of a water pollution treatment system according to an embodiment of the present invention;
fig. 2 is a schematic view of the water pollution treatment system in the embodiment of the present invention.
As shown in fig. 1 and fig. 2, a water pollution treatment system of the embodiment of the present invention includes:
the rotational flow sand setting device (10),
a regulating reservoir 20 connected with the rotational flow sand settling vessel 10 through a pipeline,
a high-speed sedimentation tank 30 connected to the storage tank 20 through a pipe, and
a high-efficiency coupling biomembrane pond 40 connected with the high-speed sedimentation pond 30 through a pipeline;
the system completes the pollution treatment of the water body by enabling the water body to sequentially flow through the rotational flow grit chamber 10, the regulation and storage tank 20, the high-speed sedimentation tank 30 and the high-efficiency coupling biomembrane tank 40.
Wherein, cyclone sand settling vessel 10 includes:
a water inlet 11 of the cyclone sand setting device, a water outlet 12 of the cyclone sand setting device, a cleaning opening 13, a cyclone separation device 14 and a sludge settling area 15; the water inlet 11 and the water outlet 12 of the rotational flow grit chamber are positioned on the side wall of the rotational flow grit chamber 10; the cleaning port 13 is positioned at the top of the rotational flow sand setting device 10; the cyclone separation device 14 is a cylindrical barrel and is positioned in the middle of the cyclone sand setting device 10; the sludge settling zone 15 is located at the bottom of the rotational flow sand settler 10.
The regulation reservoir 20 includes:
a regulating reservoir water inlet 21, a regulating reservoir water outlet 22, a lift pump 23 and a first valve 24; the water inlet 21 and the water outlet 22 of the regulation pool are positioned on the side wall of the regulation pool 20; the lift pump 23 is positioned at the water outlet side of the regulation and storage tank 20; the first valve 24 is located on the inlet conduit of the storage tank 20.
The high-speed sedimentation tank 30 includes:
a high-speed sedimentation tank water inlet 31, a high-speed sedimentation tank water outlet 32, a mixing zone 33, a reaction zone 34 and a sedimentation zone 35; the high-speed sedimentation tank water inlet 31 is positioned on the side wall of the mixing area 33; the water outlet 32 of the high-speed sedimentation tank is positioned on the side wall of the sedimentation zone 35; the mixing zone 33, the reaction zone 34 and the precipitation zone 35 are connected in sequence; the settling zone 35 comprises an inclined plate settling zone 351 located at the upper part of the settling zone 35 and a sludge settling zone 352 located at the bottom of the settling zone 35.
The high-efficiency coupling biofilm tank 40 includes:
a water inlet 41 of the high-efficiency coupling biological membrane pool, a water outlet 42 of the high-efficiency coupling biological membrane pool and a hollow fiber aeration membrane 43; the water inlet 41 and the water outlet 42 of the high-efficiency coupling biomembrane pond are positioned on the side wall of the high-efficiency coupling biomembrane pond 40; hollow fiber aeration membranes 43 are distributed within the high efficiency coupled biofilm tank 40.
Further, the regulation and storage tank 20 further comprises an internal flushing device, wherein the internal flushing device comprises a flushing pipeline, a sludge discharge pipeline for discharging flushing sewage and automatic control equipment; the high-speed sedimentation tank 30 further comprises a medicament supply device, the medicament supply device comprises an automatic medicament feeding device, and the adding amount of the medicament is automatically controlled according to the flow of the water body; the high-efficiency coupling biological membrane tank 40 also comprises an aeration device, the aeration device comprises an air blower, an aeration pipeline and an automatic control device, and the aeration rate is automatically controlled according to the flow of the water body.
The system can be used for treating any polluted water body, and is particularly suitable for treating initial rainwater.
When the system is used for treating initial rainwater, the applicant designs the system to be capable of switching between two working modes of initial rainwater treatment and water body circulation water quality maintenance at will in consideration of the fact that rainwater does not exist all the time.
In order to implement the above two operation modes, the system further includes:
a water inlet pipe 50 of the water body to be treated connected with the water inlet end of the rotational flow grit chamber; and
a water body circulation pipeline 60 for connecting the water body inlet pipeline 50 to be treated and the treated water body (namely, the regional water body 70 in the figure); the water inlet pipeline 50 of the water body to be treated is provided with a second valve 51 which is positioned before the water body circulating pipeline 60 and the water inlet pipeline 50 of the water body to be treated are crossed; the water body circulation pipeline 60 is provided with a third valve 61.
The mode for realizing the autonomous switching between the initial rainwater treatment and the water body circulation treatment program comprises the following steps: when the water body to be treated is treated, the second valve 51 on the water inlet pipeline 50 of the water body to be treated is opened, the third valve 61 on the water body circulating pipeline 60 is closed, the water body to be treated is introduced into the treatment system from the inlet, and is discharged into the regional water body 70 from the outlet after being treated; when the circulating water body is treated, the third valve 61 on the water body circulating pipeline 60 is opened, the second valve 51 on the water inlet pipeline 50 of the water body to be treated is closed, and the water of the regional water body is introduced into the treatment system from the inlet and is discharged into the regional water body 70 from the outlet after repeated treatment.
Fig. 3 is a process flow chart of the water pollution treatment method in the embodiment of the present invention.
As shown in fig. 3, the water pollution treatment system comprises the following steps:
s1, separating particles in the water body in a cyclone sand setting device; the inflow enters the cyclone sand setting device 10 through the cyclone sand setting device water inlet 11, the water enters the cyclone separation device 14 in the cyclone sand setting device 10 along the tangential direction, under the pushing action of the water flow, the rotary motion is generated, because the density of the particles including suspended matters and water is different, under the combined action of centrifugal force, centripetal force, buoyancy and fluid drag force, the water with low density rises, the particles with high density are deposited on the silt settling area 15 at the bottom of the device, the cleaning is regularly carried out through the cleaning opening 13, and the water body for removing the particles is discharged from the water outlet 12 of the cyclone sand setting device through the flow guide pipe.
S2, the water body enters a storage and adjustment pool for storage and adjustment: the outlet water of the rotational flow grit chamber 10 is introduced into the regulation and storage tank 20 from the regulation and storage tank water inlet 21, the water is regulated and stored in the regulation and storage tank 20, and when the water level in the regulation and storage tank 20 reaches the designed water level, the first valve 24 on the water inlet pipeline of the regulation and storage tank 20 is closed, and the water inlet is stopped. The regulated water in the regulation pool 20 is lifted by a lift pump 23 and then discharged from a regulation pool water outlet 22.
S3, the step of flocculating and settling the water body in a high-speed sedimentation tank: the high-speed sedimentation tank 30 is introduced from the high-speed sedimentation tank water inlet 31 to the regulation pond 20 play water, through throwing coagulant and flocculating agent to aquatic, makes the granule that is difficult to deposit in the aquatic polymerize each other and form the flocculating constituent, and the flocculating constituent has powerful adsorption affinity, can not only adsorb the suspended solid, can also adsorb partial bacterium and soluble material, and the flocculating constituent combines with the impurity in the water and forms bigger flocculating constituent. The flocculating constituent is subjected to adsorption, the volume of the flocculating constituent is increased and the flocculating constituent sinks, so that pollutants in water are removed preliminarily. The magnetic powder can strengthen the reaction inside the flocculation, and the pollutant sedimentation rate is greatly improved. Pollutants in water are fully mixed with a flocculating agent in the mixing zone 33 and then enter the flocculation reaction zone 34, contact and collide to form flocculating constituents under the action of the added flocculating agent, the flocculating constituents enter the settling zone 35, are settled and separated through the inclined plate settling zone 351 under the action of gravity, sludge is settled in the sludge settling zone 352, and treated water is discharged from a water outlet 32 of the high-speed settling pond through a water outlet pipe.
S4, removing pollutants by water entering a high-efficiency coupling biomembrane pond: the water from the high-speed sedimentation tank 30 is introduced into the high-efficiency coupling biological membrane tank 40 from a water inlet 41 of the high-efficiency coupling biological membrane tank, a hollow fiber aeration membrane 43 is used as a microbial membrane attachment carrier and performs biological membrane aeration, when sewage flows around the aeration membrane attached with the biological membrane, pollutants in the water body enter the biological membrane under the actions of concentration driving, microbial adsorption and the like, and are utilized by the microorganisms through biological metabolism and proliferation, so that the pollutants in the water body are assimilated into microbial cells which are fixed on the biological membrane or decomposed into inorganic metabolites, and the purification process of the water body is achieved. The treated rainwater body is discharged into the regional water body 70 from the water outlet 42 of the high-efficiency coupling biomembrane pond through the water outlet pipe.
Wherein, the regulation pond 20 should still dispose inside washing unit, including washing the pipeline, arrange mud pipeline and automatic control equipment, through regularly washing the regulation pond, make the sedimentary mud in the regulation pond, arrange the mud pipeline and discharge into municipal administration sewage pipeline nearby.
The high-speed sedimentation tank 30 should also be provided with a medicament supply device, which comprises an automatic dosing device, and the addition amount of the flocculating agent is automatically controlled according to the flow of water. In addition, considering the influence of the water flow speed on the flocculation sedimentation action time, the adding proportion of the flocculating agent is automatically adjusted according to the water flow, so that intelligent agent adding is realized, the operation steps are greatly simplified, and the labor cost and the operation cost are saved.
The high-efficiency coupling biological membrane tank 40 is also provided with an aeration device which comprises an air blower, an aeration pipeline and an automatic control device; the aeration rate is automatically controlled according to the flow of water. The aeration system adopts an intelligent aeration system, can automatically adjust the aeration rate according to the oxygen demand of sewage treatment, and has the effects of saving energy and reducing consumption while ensuring the treatment effect.
In addition, as described above, the method can be switched between the two working modes of initial rainwater treatment and water body circulating water quality maintenance at will, and the switching is mainly realized by controlling the opening and closing of the second valve 51 on the water body inlet pipeline 50 to be treated and the third valve 61 on the water body circulating pipeline 60.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.
Claims (7)
1. A water pollution abatement system based on coupled biofilms, the system comprising:
the cyclone-type sand setting device is provided with a sand setting tank,
a regulating and storing tank connected with the rotational flow sand setting device through a pipeline,
a high-speed sedimentation tank connected with the storage tank through a pipeline, an
The high-efficiency coupling biological membrane pool is connected with the high-speed sedimentation pool through a pipeline;
the system completes the pollution treatment of the water body by enabling the water body to sequentially flow through the rotational flow sand setting device, the regulation and storage tank, the high-speed sedimentation tank and the high-efficiency coupling biomembrane tank.
2. The water body pollution abatement system of claim 1, wherein the cyclone sand settler comprises:
the device comprises a cyclone sand setting device water inlet, a cyclone sand setting device water outlet, a cleaning opening, a cyclone separation device and a mud setting area;
the water inlet and the water outlet of the rotational flow grit chamber are positioned on the side wall of the rotational flow grit chamber;
the cleaning port is positioned at the top of the rotational flow sand setting device;
the cyclone separation device is a cylindrical barrel and is positioned in the middle of the cyclone sand settling device;
the silt settling area is positioned at the bottom of the rotational flow grit chamber.
3. The water body pollution abatement system of claim 1, wherein the storage tank comprises:
the device comprises a regulating reservoir water inlet, a regulating reservoir water outlet, a lift pump and a first valve;
the water inlet and the water outlet of the storage tank are positioned on the side wall of the storage tank;
the lifting pump is positioned on the water outlet side of the storage tank;
the first valve is positioned on a water inlet pipeline of the storage tank.
4. The water body pollution abatement system of claim 1, wherein the high-speed sedimentation tank comprises:
a high-speed sedimentation tank water inlet, a high-speed sedimentation tank water outlet, a mixing zone, a reaction zone and a sedimentation zone;
the water inlet of the high-speed sedimentation tank is positioned on the side wall of the mixing area;
the water outlet of the high-speed sedimentation tank is positioned on the side wall of the sedimentation zone;
the mixing zone, the reaction zone and the precipitation zone are connected in sequence;
the settling zone comprises an inclined plate settling zone positioned at the upper part of the settling zone and a sludge settling zone positioned at the bottom of the settling zone.
5. The water body pollution abatement system of claim 1, wherein the high efficiency coupled biofilm tank comprises:
the water inlet of the high-efficiency coupling biological membrane pool, the water outlet of the high-efficiency coupling biological membrane pool and the hollow fiber aeration membrane;
the water inlet and the water outlet of the high-efficiency coupling biomembrane pond are positioned on the side wall of the high-efficiency coupling biomembrane pond;
the hollow fiber aeration membrane is distributed in the high-efficiency coupling biological membrane tank.
6. The water body pollution treatment system according to any one of claims 1 to 5,
the storage tank also comprises an internal flushing device, and the internal flushing device comprises a flushing pipeline, a sludge discharge pipeline for discharging flushing sewage and automatic control equipment;
the high-speed sedimentation tank also comprises a medicament supply device, the medicament supply device comprises an automatic medicament feeding device, and the addition amount of the medicament is automatically controlled according to the flow of the water body;
the high-efficiency coupling biological membrane pool also comprises an aeration device, wherein the aeration device comprises an air blower, an aeration pipeline and an automatic control device, and the aeration rate is automatically controlled according to the flow of the water body.
7. The water body pollution abatement system of claim 1, further comprising:
a water inlet pipeline of the water body to be treated, which is connected with the water inlet end of the rotational flow grit chamber; and
a water body circulating pipeline for connecting a water body inlet pipeline to be treated with the treated water body;
the water inlet pipeline of the water body to be treated is provided with a second valve which is positioned before the water circulating pipeline and the water inlet pipeline of the water body to be treated are crossed;
and a third valve is arranged on the water body circulating pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921063981.9U CN211620254U (en) | 2019-07-09 | 2019-07-09 | Water body pollution treatment system based on coupling biological membrane |
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| CN201921063981.9U CN211620254U (en) | 2019-07-09 | 2019-07-09 | Water body pollution treatment system based on coupling biological membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330177A (en) * | 2019-07-09 | 2019-10-15 | 天津生态城市政景观有限公司 | Water pollution governing system and method based on coupled biological film |
| CN115806345A (en) * | 2022-12-14 | 2023-03-17 | 中国长江三峡集团有限公司 | Composite microorganism system and method for runoff sewage in-situ treatment |
-
2019
- 2019-07-09 CN CN201921063981.9U patent/CN211620254U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330177A (en) * | 2019-07-09 | 2019-10-15 | 天津生态城市政景观有限公司 | Water pollution governing system and method based on coupled biological film |
| CN115806345A (en) * | 2022-12-14 | 2023-03-17 | 中国长江三峡集团有限公司 | Composite microorganism system and method for runoff sewage in-situ treatment |
| CN115806345B (en) * | 2022-12-14 | 2023-09-12 | 中国长江三峡集团有限公司 | Composite microorganism system and method for runoff sewage in-situ treatment |
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