CN111285546B - Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution - Google Patents

Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution Download PDF

Info

Publication number
CN111285546B
CN111285546B CN202010144395.8A CN202010144395A CN111285546B CN 111285546 B CN111285546 B CN 111285546B CN 202010144395 A CN202010144395 A CN 202010144395A CN 111285546 B CN111285546 B CN 111285546B
Authority
CN
China
Prior art keywords
water
sewage
rain
water inlet
regulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010144395.8A
Other languages
Chinese (zh)
Other versions
CN111285546A (en
Inventor
王利群
邢汉君
张碧波
李晶
冉启洋
聂芳
胡逸萱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Hengkai Environment Technology Investment Co ltd
Original Assignee
Hunan Hengkai Environment Technology Investment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Hengkai Environment Technology Investment Co ltd filed Critical Hunan Hengkai Environment Technology Investment Co ltd
Priority to CN202010144395.8A priority Critical patent/CN111285546B/en
Publication of CN111285546A publication Critical patent/CN111285546A/en
Priority to PCT/CN2020/098154 priority patent/WO2021174722A1/en
Application granted granted Critical
Publication of CN111285546B publication Critical patent/CN111285546B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/04—Pipes or fittings specially adapted to sewers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/08—Ventilation of sewers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105—Accessories, e.g. flow regulators or cleaning devices
    • E03F5/108—Cleaning devices providing a flushing surge
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001—Runoff or storm water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F2201/00—Details, devices or methods not otherwise provided for
    • E03F2201/10—Dividing the first rain flush out of the stormwater flow
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Abstract

The invention relates to a regulation and purification system and a regulation and purification method for controlling rain and sewage confluence overflow pollution, wherein a water inlet gallery comprises a sewage pump station water inlet, a regulation and storage sedimentation tank water inlet, a water storage type ecological filter tank water inlet and an emergency overflow port which are sequentially increased in height, and a regulation and storage sedimentation tank clarification overflow port connected with a water storage type ecological filter tank so as to form a gradient line for graded treatment according to the rainfall: no rain or light rain line: a water inlet gallery, a sewage pump station and a sewage treatment plant; medium rainfall line: a water inlet gallery, a storage and sedimentation tank and a sewage treatment plant; long-time continuous medium rain line: a water inlet gallery, a storage sedimentation tank, a water storage type ecological filter tank and a natural water body; large rainfall line: a water inlet gallery, a water storage type ecological filter tank and a natural water body; a rainstorm line: the water inlet gallery overflows to an emergency overflow port of the natural water body; and the following line includes all the preceding lines. The system can greatly reduce the pollution load discharged into the water body under the condition of limited storage capacity, and is economical and efficient.

Description

Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a combined overflow pollution control system which is used for strengthening drainage pollution control in rainy seasons through regulation and purification measures, improving the environmental quality of surface water and being applicable to black and odorous water body treatment and sponge city construction.
Background
At present, most of old urban areas in China still adopt a rain and sewage combined drainage system, and the combined drainage system exists for a long time before the split-flow reconstruction of each area is completely realized. When the rainstorm and rainfall exceed the design capability of the confluence pipeline in rainy season, excessive rain and sewage mixed sewage overflows from an overflow facility or a drainage pump station of the confluence pipeline into urban water, and the overflows are generally called rain and sewage confluence overflows. The overflow pollution problem existing in the combined system seriously restricts the improvement of the water environment quality in China for a long time, and becomes an important problem which cannot be avoided and needs to be solved urgently in the construction of sponge cities and the remediation of black and odorous water bodies at the present stage. In recent years, a series of important documents such as 'action plan for preventing and treating water pollution' of 'guidance opinion on promoting sponge city construction' issued by China strengthen the attention to water pollution caused by combined overflow, and 'working guidelines for treating urban black and odorous water body' issued by ministry of construction also bring combined overflow pollution into the establishment scope requirements of treatment schemes as one of point source pollution. Undoubtedly, combined system overflow pollution control has become a problem to be solved urgently in black and odorous water body remediation and sponge city construction in the present stage of China.
The treatment of combined system overflow pollution can be respectively treated by three stages of pollutant migration paths such as source migration, migration and confluence migration: (1) source control measures: mainly means that rain and sewage flow division transformation and sponge transformation are carried out on the convection sheet area; the source control and flow distribution transformation of pollutants is a measure for thoroughly solving the problem of overflow pollution, but the transformation difficulty is high because most of the confluence areas of the built-up areas are old urban areas, and the coordination amount is huge, the consumed time is long, the investment is large, and the realization is difficult in a short period. (2) Migration control measures: mainly refers to the process from the pollutant entering the collecting pipe network system to the pollutant finally discharging into the receiving water body. The treatment measures in the migration process mainly comprise measures of mixed misconnection transformation, regular flushing of pipelines and the like. The mixed misconnection transformation is the same as the split flow transformation, the workload is large, the time consumption is long, the serial connection point of the pipe network system needs to be combed, and the serial connection pipe network is scrapped and blocked. (3) Converging control measures: mainly mean to finally gathering the pollutant at the row of mouthful end and carry out centralized processing, mainly including regulation pond or end treatment complex, these devices are mostly single rain and sewage damps and shunts water conservancy diversion structure, adopt single device to handle the sewage that produces under certain operating mode promptly, and every device volume scale is big, and area is big, and sewage dwell time is long, leads to sewage to turn black smelly easily. The intercepted sewage is also discharged to a sewage treatment plant for treatment, and the operation load of the sewage treatment plant is high.
Disclosure of Invention
Aiming at the problems that the existing convergence control measure is of a single structure, the occupied area is large, the water body is black and smelly, the operation load of a sewage treatment plant is high and the like, the invention provides a regulation and purification system for controlling the rain and sewage confluence overflow pollution. The invention also comprises a regulation and purification method for controlling rain-sewage confluence overflow pollution.
The technical scheme of the invention is as follows:
a regulation and purification system for controlling rain and sewage confluence overflow pollution comprises a water inlet gallery, a sewage pump station, a regulation and sedimentation tank and a water storage type ecological filter tank, wherein the water inlet gallery comprises a sewage pump station water inlet, a regulation and sedimentation tank water inlet, a water storage type ecological filter tank water inlet and an emergency overflow port which are sequentially increased in height on the water inlet gallery, and a regulation and sedimentation tank clarification overflow port connected with the water storage type ecological filter tank so as to form a gradient line for treating confluence overflow sewage in a split gradient manner, wherein the gradient line comprises a no-rain or small-rain line, a medium-rain line, a long-time continuous medium-rain line, a large-rain line and a heavy-rain line;
the rain-free or low-rainfall line sequentially comprises a water inlet gallery, a water inlet of a sewage pump station and the sewage pump station, and the sewage pump station is connected with the sewage treatment plant;
the medium rainfall line comprises the no-rain or low rainfall line and also comprises a pipeline formed by a water inlet gallery, a water inlet of the storage and regulation sedimentation tank, a diversion sedimentation system, a venting system and a backwashing system in the storage and regulation sedimentation tank, and the venting system and the backwashing system of the storage and regulation sedimentation tank are both connected with the sewage treatment plant;
the long-time continuous medium rain line comprises the no-rain or low-rain line and a medium rain line, and also comprises a pipeline formed by a clarification overflow port of the storage and sedimentation tank, a water distribution system of the water storage type ecological filter tank, a purification system, a natural oxygenation system and a drainage system, wherein the drainage system is communicated with a natural water body;
the high rainfall line comprises the no-rain or low rainfall line, a medium rainfall line and a long-time continuous medium rainfall line, and also comprises pipelines formed by a water inlet of the water storage type ecological filter tank on the water inlet gallery, a water distribution system of the water storage type ecological filter tank, a purification system, a natural oxygenation system and a drainage system, wherein the drainage system is communicated with a natural water body;
the torrential rain circuit comprises the no-rain or low-rain circuit, the medium-rain circuit, the long-time continuous medium-rain circuit and the high-rain circuit, and further comprises a pipeline formed by an emergency overflow port which overflows to a natural water body on the water inlet gallery.
The bottom elevation of the water inlet of the sewage pump station is flush with the bottom of the water inlet gallery; the height of the liquid level of the domestic sewage in the water inlet gallery from the bottom of the water inlet gallery in sunny days is H0The setting height of the water inlet of the storage and sedimentation tank in the water inlet gallery is H0～2H0(ii) a Water storage type ecological filter on water inlet galleryThe height of the water inlet of the pool in the water inlet gallery is 2H0～3H0(ii) a The setting height of the emergency overflow port on the water inlet gallery in the water inlet gallery is 3H0～4H0。
The water storage type ecological filter tank sequentially comprises a sand filter layer, a functional matrix layer and a plant planting layer from bottom to top so as to form a purification system of the water storage type ecological filter tank;
the sand filtering layer adopts medium sand with the grain diameter of 0.2-0.6mm, wherein the proportion of the sand filtering with the grain diameter of 0.25-0.5mm is more than 50 percent, and the filling height of the sand filtering layer is 0.7-1.3 m;
the functional matrix layer adopts pyrite and biomass charcoal with the grain diameter of 80-100 meshes, the filling ratio is 1:1, multiple functional matrix layers of iron-carbon-collecting micro-electrolysis oxidation organic matters, pyrite autotrophic denitrification, biomass charcoal adsorption nitrogen and phosphorus and the like are formed, and the filling height of the functional matrix layer is 0.3-0.8 m;
the plant planting layer comprises a submerged plant layer and an emergent plant layer, the height of the layer is 0.5-1.1 m, the emergent plant is of a flooding-resistant type, and the planting density is 3-9 plants per square meter.
The water distribution system of the water storage type ecological filter tank comprises a water distribution main gallery, a water distribution well and a water distribution pipe;
the main water distribution gallery is of a structure with height fall and is arranged along the side line and diagonal line of the regulating and storing type ecological filter pool body, the upper part of the main water distribution gallery is communicated with a clarifying overflow port of a regulating and storing sedimentation pool and a water inlet of a water storing type ecological filter pool on a water inlet gallery, and the bottom of the main water distribution gallery is respectively connected with a water distribution pipe and a water distribution well which are positioned in the pool body and used for water inlet;
the water distribution pipes are arranged at the bottom of the deep layer of the pool body along the water distribution main corridor, the water distribution wells are arranged at the positions far away from the water distribution main corridor in the pool body, and the plurality of water distribution pipes are radially arranged around the water distribution wells.
The drainage system of the water storage type ecological filter tank comprises a drainage gallery, a water collecting well, a perforated filter pipe, a rainwater pump room and an emergency overflow port of the water storage type ecological filter tank;
the perforated filter pipes are horizontally laid in the functional matrix layer and used for collecting water, rainwater collected by the perforated filter pipes is drained into a water collecting well, the water collecting well is connected with a drainage gallery, the drainage gallery is connected with a rainwater pump room through a drain pipe, and the rainwater pump room is communicated with surface water;
the upper part of the ecological filter tank is higher than the water collecting well and is provided with an ecological filter tank emergency overflow port.
The storage and sedimentation tank comprises a plurality of galleries which are arranged in parallel, and each gallery comprises a gallery inlet, a flow guide sedimentation system, a venting system, a backwashing system and a clarification overflow weir;
the corridor entrance is located every on the lateral wall of corridor entrance, with regulation and storage pond sedimentation tank water inlet intercommunication, the clarification overflow weir be located with the regulation and storage pond water inlet is relative on the pool wall of one side, the lower limb of clarification overflow weir is less than regulation and storage sedimentation tank water inlet, the lower limb of clarification overflow weir arrange with the same height of inflow mouth to the regulation and storage pond, for control clarification overflow volume, the U type cross-section of stainless steel is arranged at clarification overflow weir every 20 cm. In order to ensure that the regulation sedimentation tank maintains the clarification sedimentation time of 0.5 to 1.0 hour, a 2.50 multiplied by 0.50m interception port is arranged in a water outlet groove of the clarification overflow weir, a sharp-angled stainless steel plate with the opening size of 2.50 multiplied by 0.45m is arranged in front of the opening, and the clarification overflow amount is adjusted by changing the opening size;
the diversion sedimentation system comprises a plurality of diversion plates, and the diversion plates are obliquely arranged downwards and crosswise on the tank walls on the two sides of each gallery to form a diversion sedimentation tank;
the emptying system comprises a drainage tank, an emptying pump station and a gate, wherein the drainage tank is positioned at the bottom of the pool body close to the entrance of the corridor, the drainage tank is provided with the gate and is connected with the emptying pump station, and the emptying pump station is connected with a sewage treatment plant;
the back flush system includes breakwater and flushometer, the breakwater is located every corridor middle part, fix at the bottom of the pool, the height of breakwater does 1/3 ~ 2/3 of the height of cell body, the corridor quilt the breakwater is separated into and is located the corridor of washing between corridor entry and the breakwater and is located the reservoir chamber between breakwater and the clarification overflow weir, it has the water drainage tank in the corridor to wash, the bottom of reservoir chamber have from the cell body lateral wall to the slope of the high reduction of breakwater, the flushometer has on the breakwater when the flushometer is opened, form by reservoir chamber to the back flush rivers that wash corridor and water drainage tank.
The system further comprises grid spaces and diving shutter walls, wherein the grid spaces are located at the water inlet of the sewage pump station, and the water inlet of the storage settling pond, the water inlet of the water storage type ecological filter tank and the water outlet are distributed uniformly on the diving shutter walls.
The system further comprises an air blower and a deodorization room, wherein the air blower is located between the grids, the sewage pump station and the storage regulation sedimentation tank, the exhaust air of the air blower leads to the deodorization room, and a deodorization device is arranged in the deodorization room.
A regulation and purification method for controlling rain and sewage confluence overflow pollution adopts the regulation and purification system for controlling rain and sewage confluence overflow pollution to treat confluence overflow sewage in a gradient way according to domestic sewage quantity and surface runoff quantity during rainfall, and specifically comprises the following steps:
(1) in sunny days, a no-rain or low-rain circuit is adopted, sewage in a receiving area flows into a sewage pump station from a water inlet gallery through a water inlet of the sewage pump station, and then is conveyed to a sewage treatment plant by a submersible pump and a pressure-bearing pipe;
(2) when the water storage height is lower than the height of the water inlet of the regulation and storage sedimentation tank, a no-rain or low-rain flow line is adopted, and the rain and sewage mixed sewage with higher concentration flows into a sewage pump station through the water inlet of the sewage pump station and then is sent to a sewage treatment plant by a submersible pump for treatment;
(3) in the middle rain days, namely when the rain and sewage mixed flow exceeds 2 times of the sewage flow in fine days, the combined sewage diluted by the rainwater is accumulated in a large amount in the water inlet gallery, when the mixed sewage is accumulated to the height of the water inlet of the regulation and storage sedimentation tank, a middle rain amount line is adopted, the mixed sewage flows into the regulation and storage sedimentation tank through the water inlet of the regulation and storage sedimentation tank and is intercepted in the closed rainwater regulation and storage sedimentation tank, and when the rainfall descends later, the intercepted sewage in the regulation and storage sedimentation tank is extracted by the submersible pump and is conveyed to a sewage treatment plant;
(4) when the rain water is continuously flowing for a long time and the rainwater regulation and sedimentation tank is full, adopting a long-time continuous rain water line, enabling sewage to flow out of an overflow port of the regulation and sedimentation tank according to the cut-off flow and to be conveyed into the impoundment type ecological filter tank, and when a packing layer of the impoundment type ecological filter tank is saturated and starts to block water, starting a rainwater pump to discharge the rainwater into the surface water body;
(5) in heavy rain days, when the filling state of the storage and sedimentation tank and the continuous sewage inflow flow from the pipeline are larger than the sum of the sewage outflow flow of the storage and sedimentation tank and the conveying capacity of a sewage pump station, water blocking in a pipeline system can be caused, a heavy rain flow line is adopted, rainwater is directly discharged to the ecological filter tank through the water inlet of the water storage type ecological filter tank, and the rainwater is discharged to a water body after being purified by the ecological filter tank;
(6) under the condition of rainstorm, a rainstorm line is adopted, and when the rainwater quantity reaches the height of the emergency overflow port in the water inlet gallery, the rainwater is directly discharged into the surface water body through the emergency overflow port and the drainage ditch.
The process that sewage flows through the water storage type ecological filter tank is as follows:
the overflow water of the storage tank and/or the overflow water of the water inlet gallery are introduced into the main water distribution gallery through the upper part of the main water distribution gallery, fall to the bottom of the main water distribution gallery by means of gravity, and then flow into the water distribution pipe positioned at the deep bottom of the water storage type ecological filter tank, so that the sewage is introduced into the tank body from the bottom of the water storage type ecological filter tank, and then sequentially flows through the sand filter layer, the functional matrix layer and the plant planting layer from bottom to top in the water storage type ecological filter tank, purified and then discharged through a water collecting well or an overflow port;
a liquid level control meter is arranged at the position of 1m of the water storage depth of the water storage type ecological filter tank, a rainwater pump room of a drainage system is controlled through the liquid level control meter, when the water storage height reaches 1m, a rainwater pump in the rainwater pump room is started, water in a water collection well of the water storage type ecological filter tank is drained to a surface water body, and therefore a vertical intermittent operation mode of the water storage type ecological filter tank is formed, and the lower layer filter material pores are guaranteed to be ventilated and oxygenated; when the water storage height reaches 1.5m, the water directly overflows to the surface water body through the emergency overflow port of the water storage type ecological filter tank.
The invention has the beneficial technical effects that:
the invention provides a regulation and purification system for controlling rain and sewage confluence overflow pollution, which mainly comprises structures such as a water inlet gallery, a sewage pump station, a regulation and sedimentation tank, a water storage type ecological filter tank and the like. The system comprises a water inlet gallery, a sewage pump station, a regulation and storage sedimentation tank, an ecological filter tank, a natural water body and other different treatment facilities, wherein the water inlet gallery is provided with water inlets leading to the sewage pump station, the regulation and storage sedimentation tank, the ecological filter tank and the natural water body at different heights so as to perform gradient treatment on combined overflow sewage, the problem of combined overflow pollution under different weather conditions and different rainfall conditions is solved, high-concentration domestic sewage and initial rainwater enter a sewage treatment plant to be treated, low-concentration mixed sewage (containing a part of rainwater) diluted by rainwater during heavy rainfall is purified by the ecological filter tank and then discharged into the water body, and the operation pressure of the sewage treatment plant is relieved while water body pollutants enter are reduced. In conclusion, the storage regulation and purification integrated system can realize gradient treatment and can treat confluent sewage in a split-flow manner during heavy rainfall such as medium rain, heavy rain and heavy rain, so that the volume required by each device is greatly reduced, and the pollution load discharged into a water body can be reduced economically and efficiently and greatly under the condition of limited storage regulation volume.
Main structure's gradient circuit is including no rain or little rainfall circuit, well rainfall circuit, long-time rain circuit, big rainfall circuit and the torrential rain circuit of lasting, and the concrete mode of action is as follows:
(1) in sunny days, a no-rain or low-rain circuit is adopted, sewage in a receiving area flows into a sewage pump station from a water inlet gallery through a water inlet of the sewage pump station, and then is conveyed to a sewage treatment plant by a submersible pump and an existing pressure-bearing pipe;
(2) when the water storage height is lower than the height of the water inlet of the regulation and storage sedimentation tank, a no-rain or low-rain flow line is still adopted, and the rain and sewage mixed sewage with higher concentration flows into a sewage pump station through the water inlet of the sewage pump station and is pumped to a sewage treatment plant for treatment;
(3) in the middle rain days, namely when the rain and sewage mixed flow exceeds 2 times of the sewage flow in fine days, the combined sewage diluted by the rainwater is accumulated in a large amount in the water inlet gallery, when the mixed sewage is accumulated to the height of the inflow opening of the storage regulation sedimentation tank, a middle rain amount line is adopted, the mixed sewage flows into the storage regulation sedimentation tank through the water inlet of the storage regulation sedimentation tank and is intercepted in the closed rainwater storage regulation sedimentation tank, and when the rainfall drops later, the intercepted sewage in the storage regulation sedimentation tank is extracted by the submersible pump and is conveyed to a sewage treatment plant;
(4) when the rain water is continuously flowing for a long time and the rainwater regulation and sedimentation tank is full, adopting a long-time continuous rain water line, enabling sewage to flow out of an overflow port of the regulation and sedimentation tank according to the cut-off flow and conveying the sewage into a water storage type ecological filter tank, and when a packing layer of the ecological filter tank is saturated and the water begins to be stopped, starting a rainwater pump to discharge the rainwater into a surface water body;
(5) in heavy rain days, when the filling state of the storage and sedimentation tank and the continuous sewage inflow flow from the pipeline are larger than the sum of the sewage outflow flow of the storage and sedimentation tank and the conveying capacity of a sewage pump station, the water accumulation in a pipeline system can be caused, a heavy rain flow line is adopted, rainwater is directly discharged to the ecological filter tank through a water inlet of the water storage type ecological filter tank on the water inlet gallery, and the rainwater is discharged to a water body after being purified by the water storage type ecological filter tank;
(6) under the condition of rainstorm, a rainstorm line is adopted, and when the rainwater quantity reaches the height of the emergency overflow port in the water inlet gallery, the rainwater is directly discharged into the surface water body through the emergency overflow port and the drainage ditch.
Under the rainstorm condition, in order to guarantee timely dredging and flood discharging of confluence sewage, an emergency overflow weir and a drainage ditch with a high water level are built before the regulation and storage sedimentation tank, and the rainstorm is directly introduced into a water body at the peak value of rainwater. In addition, the layered diving grille plate is arranged at the inlet of the overflow weir, so that no coarse substances and suspended substances are discharged into the lake under the condition of rainstorm, and the water quality of the water body is influenced.
Preferably, a grid is arranged between a sewage pump station water inlet of the water inlet gallery and the sewage pump station, and sewage flows into the sewage pump station after being subjected to deslagging treatment by the grid; the sewage that accumulates at the corridor of intaking all sets up dive tripe wall to the different water inlets of regulation sedimentation tank, ecological filter, overflows such as water, constitute by stratiform dive metal sheet, it crosses the shallow weir entering to block the granule solid matter, floater and suspended solid are effectively restrained, and the water that flows through between the baffle flows into the pond under the inflow surface of water all the time, the material of holding back is in baffle lateral downward sedimentation and the grid before the pipeline continues to flow to sewage pump station, consequently dive tripe wall need not maintain, the operation management is convenient.
Preferably, a layered diving wall is arranged at a water inlet of the storage regulation sedimentation tank to intercept larger grid slag and suspended matters in the sewage. The intercepted substances are precipitated in the front of the baffle plate and enter the water inlet pipeline to continuously flow to the space between the grids, and the precipitates intercepted and precipitated at the bottom of the storage regulation sedimentation tank are flushed by the flushing equipment and are simultaneously conveyed to the sewage treatment plant.
Preferably, the odor generated in the grid room, the sewage pumping station and the storage and regulation sedimentation tank is continuously pumped by the blower and purified in the waste gas treatment equipment in the deodorization room. Preferably, the odor is an ionic deodorization device adopting actinic ionization, generates a large amount of positive and negative oxygen ions by virtue of UVC-radiation catalytic reaction, has strong oxidizability, and can oxidize and decompose polluting odor factors such as methyl mercaptan, ammonia, hydrogen sulfide, ethers, amines and the like in a very short time.
Preferably, the storage and sedimentation tank comprises a gallery inlet, a diversion sedimentation system, a back flushing system, a venting system and a clarification overflow weir. The combined sewage is accumulated and precipitated in the regulation and sedimentation tank, and then the clarified water is discharged into the water storage type ecological filter tank through the clarification overflow weir. The settling overflow outlet is arranged on the principle that the retention time of the combined sewage in the regulation and sedimentation tank is kept at 1h, so that the combined sewage is ensured to be fully precipitated. After the pond body is emptied into the air, the sediment at the bottom of the pond is washed by a washing system, and the washing sewage is discharged to a sewage treatment plant for treatment.
Preferably, in order to ensure that water inlet and back flushing are uniform and sufficient, the storage and sedimentation tank is provided with a plurality of galleries; the diversion plates in the storage tank are arranged in a crossed mode, so that the circuitous flow path of sewage in the tank can be increased, the diversion plates which are arranged obliquely downwards are beneficial to enabling suspended matters precipitated on the inclined plates to slide into the bottom under the action of gravity, and then the suspended matters are cleared through bottom backwashing. The diversion effect through the guide plate makes the sewage in the regulation and sedimentation tank flow in a circuitous way, realizes lengthening the flow path of sewage in the tank under the condition of smaller tank capacity, and promotes the effect of the static sedimentation of suspended matters in the sewage.
Preferably, the bottom of the storage and regulation sedimentation tank is provided with a plurality of flushing galleries, the tail part of each flushing gallery is provided with a flushing room/water storage chamber, and the flushing room/water storage chamber is filled with a pipeline with a check valve/flushing valve after the storage and regulation sedimentation tank is filled. After the precipitation time, the storage settling pond is pumped out by the water pump through the drainage groove, and meanwhile, the stagnant water in the residual flushing room stays in the flushing room. The flush valves mounted in front of the flushing room/reservoir, i.e. on the water deflector, are opened in sequence at time intervals, and the material settled at the bottom of the flushing gallery is flushed by the water stream of the surge character flowing out of the flushing room/reservoir under the influence of the gradient into a drainage channel at the inlet of the gallery, from where it is conducted through a pipe to a sewage pumping station.
The storage and sedimentation tank is arranged in a buried mode, can be used as a leisure activity area on the ground, can maximize the land utilization of the area, and has important significance for the current market environment with pretty land resources.
Preferably, in order to ensure that pollutants in the combined sewage are effectively treated, the water storage type ecological filter tank mainly comprises a water distribution system, a drainage system, a purification system and the like, clear water precipitated in the storage regulation sedimentation tank is guided into the ecological filter tank for further purification treatment, and then the clear water is used for regional landscape water or directly discharged into a water body.
The water storage type ecological filter tank adopts a natural oxygenation mode, is designed into a form of periodic emptying, adopts a vertical intermittent operation mode, and ensures that the pores of the lower-layer filter material are kept ventilated and oxygenated by intermittent operation under the condition of sunny days or light rain. The ventilation pipeline is arranged at the tail end of the perforated filter pipe, so that microorganisms are ensured to be in an aerobic environment, anaerobic odor generation of the filter is avoided, and the problem of filter blockage is solved.
In addition, the height of the water outlet of the ecological filter tank is 1.5m higher than the surface of the filter material, the height of the plant planting layer above the filler layer is 0.8 m, the height space of the plant planting layer is increased by planting two layers of plants, namely submerged plants and emergent plants, and the deep purification capacity of the plants of the filter tank under the high water storage capacity is ensured.
Preferably, the water distribution system comprises a main water distribution gallery, a water distribution well, water distribution pipelines and overflow ports of a water inlet gallery, wherein the main water distribution gallery is communicated with the clarification overflow port of the regulation and storage sedimentation tank, the main water distribution gallery is arranged along the sideline and the diagonal line of the tank body, a certain number of water distribution wells are arranged to be communicated with the main water distribution gallery for ensuring uniform water distribution, then a certain number of water distribution pipes are radially arranged, the water distribution pipes are arranged at the deep bottom of the filter tank, and sewage flows through the filter tank from bottom to top in an upward flow manner. Under the condition of continuous heavy rain, rainwater directly flows into the ecological filter tank through an overflow port of the water inlet gallery, and flows into the water collecting well after being subjected to plant purification and adsorption treatment of functional matrixes.
The drainage system comprises a drainage gallery, a water collecting well, a perforated filter pipe and a rainwater pump room, wherein the perforated filter pipe horizontally laid on the functional matrix layer collects water, the tail end of the perforated filter pipe is provided with a 45-degree bent pipe and a PVC-U pipe fitting which extends upwards to a position above the liquid level, and the upper part of the perforated filter pipe is provided with an air inlet which is used as a ventilation pipeline of the filter tank water collecting pipe. Rainwater collected by the perforated filter pipes is drained into a water collecting well, the water collecting well is connected with a drainage gallery, a rainwater pump room is connected with the drainage gallery through a drainage pipe, and the rainwater in the filter pool is pumped to surface water through a rainwater pump in the rainwater pump room after being purified by the filter pool. In addition, under the condition of heavy rain, the ecological filter tank is also provided with an ecological filter tank emergency overflow port directly leading to surface water. The filter tank drainage system can control the filter tank to have better water storage capacity through the rainwater pump, and relieve the influence of surface runoff on a surface water body under heavy rain conditions.
The purifying system of the water storage type ecological filter tank comprises a filler layer and a plant planting layer. The filler layer comprises a functional matrix layer and a sand filter layer, the functional matrix layer adopts pyrite and biomass charcoal with the grain diameter of 80-100 meshes, and the filling height of the functional matrix layer is 0.3-0.8 m; the sand filtering layer adopts medium sand with the grain diameter of 0.2-0.6mm, wherein the sand filtering ratio of the grain diameter of 0.25-0.5mm is more than 50%, and the filling height of the sand filtering layer is 1 m; and a plant planting layer is arranged above the packing layer and comprises a submerged plant layer and an emergent plant layer, the height of the layer is set to be 0.8 m to ensure that the filter tank has larger water storage capacity, the emergent plants on the plant planting layer are in a water flooding resistant type, and the planting density is 6 plants per square meter.
Preferably, the filtering pond drainage system accessible rainwater pump control filtering pond has better water storage capacity, alleviates the influence of surface runoff to the surface water body under the heavy rain condition. Preferably, under the non-rainstorm working condition, the rainwater can be used as water for a landscape fountain after being treated by the ecological filter, and the water resource recycling is realized. Is a multifunctional structure integrating storage, throttling discharge and sewage purification.
The invention fully combines the grey treatment facilities of diversion, regulation and storage and the like and the green treatment facilities of ecological purification and the like, realizes the control of combined overflow pollution through a set of safe and environment-friendly drainage and sewage treatment system, and can realize the improvement of the following aspects through the combined sewage treatment system in the invention:
(1) hydraulic congestion in a combined pipe network is eliminated, and overflow pollution is eliminated;
(2) the operation pressure of a sewage treatment plant is reduced by regulating, storing and staggering the peaks of surface runoff in heavy rain;
(3) the combined sewage diluted in rainy season can be directly discharged into a water body after being correspondingly treated through the sedimentation of the storage sedimentation tank and the purification of the ecological filter tank;
(4) during rainstorm, the water storage type ecological filter tank is used for adsorbing and intercepting pollutants and performing biological-ecological degradation on flood discharge mixed sewage before entering water, so that the influence of the rain and sewage mixed sewage on the water quality of the water is reduced.
(5) The regulation and sedimentation tank can accumulate and precipitate high-pollution-concentration mixed sewage when rainfall comes, and completely transfer the mixed sewage to a sewage treatment plant for treatment, so that the pollution load of the water body is greatly reduced.
In summary, the regulation and purification system for controlling rain and sewage confluence overflow pollution provided by the invention can enable high-concentration domestic sewage and initial rainwater to completely enter a sewage treatment plant for treatment, and under the condition of heavy rainfall, diluted rain and sewage mixed water can be discharged into a water body after being purified by an ecological filter, so that the total amount of pollutants entering the water body is reduced, the operation pressure of heavy rainfall on the sewage treatment plant is relieved, and the life quality of surrounding residents is further improved.
Drawings
FIG. 1 is a process flow diagram of a regulation and purification system for controlling rain and sewage confluence overflow pollution according to the present invention;
FIG. 2 is a schematic view of a regulation and purification system for controlling rain and sewage confluence overflow pollution according to the present invention;
FIG. 3 is a floor plan of a storage tank;
3 FIG. 3 4 3 is 3 a 3 view 3 A 3- 3 A 3 of 3 FIG. 3 3 3; 3
FIG. 5 is a B-B diagram of FIG. 3;
fig. 6 is a schematic sectional view of the water storage type ecological filter.
Reference numerals: 1 water inlet gallery, 11 sewage pump station water inlet, 12 regulation and sedimentation tank water inlet, 13 ecological filter tank water inlet, 14 emergency overflow port, 15 horizontal grid, 16 louver diving wall, 2 grid room, 3 sewage pump station, 4 deodorization room, 5 regulation and sedimentation tank, 51 flushing gallery, 52 flushing valve, 53 emptying gate, 54 regulation and sedimentation tank overflow port, 55 guide plate, 56 gallery water inlet, 57 drainage tank, 58 water baffle, 59 water storage chamber, 6 water storage type ecological filter tank, 61 water distribution main gallery, 62 water distribution pipe, 63 water distribution well, 64 water collection well, 65 rainwater pump room, 66 ecological filter tank emergency overflow port, 67 plant planting layer, 68 functional matrix layer, 681 perforated filter pipe, 69 sand filter layer, 7 liquid level controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and accompanying fig. 1-6. The specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
Example 1
Referring to fig. 1-2, the regulation and purification system for controlling rain-sewage combined flow overflow pollution of the embodiment comprises a water inlet gallery 1, a grid room 2, a sewage pumping station 3, a deodorization room 4, a regulation and sedimentation tank 5 and a water storage type ecological filter 6.
The intake corridor 1 comprises a sewage pump station water inlet 11, a regulation and storage sedimentation tank water inlet 12, an ecological filter tank water inlet 13 and an emergency overflow port 14 which emergently overflows to a water body under a heavy rain working condition, wherein the bottom elevation of the sewage pump station water inlet 11 is flush with the bottom of the intake corridor 1, the sewage pump station water inlet 11 is connected with a grid room 2 through a pipeline, high-concentration rainwater and sewage combined in a clear day, a rainfall period less than the rainfall period are discharged into the grid room 2 through the sewage pump station water inlet 11 for deslagging treatment, and then discharged into a sewage pump station 3 through the pipeline, the high-concentration rainwater and sewage combined sewage is pumped into a sewage treatment plant through a sewage pump in the sewage pump station 3 for treatment, the sewage pump in the sewage pump station 3 keeps one-use-standby, and the sewage pump can continuously convey sewage to the sewage treatment plant for treatment when one sewage pump fails.
The regulation sedimentation tank water inlet 12 sets up in the 0.4m department of height in 1 bottom of corridor of intaking, and regulation sedimentation tank water inlet 12 links to each other with regulation sedimentation tank 5, and when sewage pump station 3's income flow exceeded the conveying capacity, mixed sewage was held in the inlet pipe and is flowed into in the regulation sedimentation tank 5 through this opening when the height to rainwater regulation sedimentation tank water inlet 12. A shutter diving wall 16 is arranged at the water inlet 12 of the storage regulation sedimentation tank and used for removing suspended matters in sewage and reducing the content of the suspended matters entering the storage regulation sedimentation tank 5.
The ecological filter water inlet 13 is 0.2 meter higher than the regulation sedimentation tank water inlet 12, and is connected with the ecological filter 6, under the working condition of heavy rain and continuous rainfall, a large amount of rainwater enters the water inlet gallery, when the water level in the water inlet gallery 1 reaches the position of the ecological filter water inlet 13, cleaner rainwater in the later stage of rainfall directly enters the ecological filter 6 treatment system through the ecological filter water inlet 13, before entering the ecological filter 6, a horizontal grid 15 is arranged at the ecological filter water inlet 13 to intercept larger solids and suspended solids.
The emergency overflow port 14 is 0.2 m higher than the water inlet of the ecological filter tank, is directly connected with the surface water body through a pipeline and is used for directly leading rainwater to flow into the water body through the emergency overflow port under the heavy rain working condition, and a shutter diving wall 16 is still arranged at the emergency overflow port to intercept larger solids and suspended matters entering the water body.
The grating room 2 and the sewage pump room 3 can generate odor during operation, the deodorizing room 4 is arranged in the embodiment, and the waste gas is continuously pumped by the blower and purified in the waste gas treatment equipment of the deodorizing room 4. Drawing an extraction amount: 3000m3The gas exchange rate was 4 times per hour, and the odor was discharged through a chimney 15m high above the roof by passing through an ion deodorizing device for actinic ionization and by means of UVC-radiation catalytic reaction.
As shown in fig. 3-5, to ensure uniform and sufficient water intake and backwash, the storage settling tank 5 comprises a plurality of galleries, each gallery comprising a gallery water inlet 56, a diversion settling system, a clarification weir, a venting system and a backwash system. The water inlet 56 is located on the side wall of the inlet end of each gallery and is in communication with the storage and sedimentation tank water inlet 12. The clarification overflow weir is located with the pond wall of the one side that regulation and sedimentation tank water inlet 12 is relative, the lower limb of clarification overflow weir is less than regulation and sedimentation tank water inlet 12, the upper limb of clarification overflow weir is regulation and sedimentation tank overflow mouth 54 just is higher than regulation and sedimentation tank water inlet 12.
The diversion sedimentation system comprises a plurality of diversion plates 55, the diversion plates are obliquely installed downwards by 45 degrees on the tank walls at the two sides of each gallery to form a diversion sedimentation tank, and the diversion plates 55 on the tank walls at the two sides are arranged in a crossed manner. The cross arrangement can increase the circuitous flow path of the sewage in the gallery, realize the lengthening of the flow path of the sewage in the pool under the condition of smaller pool capacity, and improve the static sinking effect of suspended matters in the sewage; the obliquely downwardly disposed deflector 55 facilitates the suspended matter settling on the plate to slide down to the bottom under gravity and then be removed by bottom backwashing.
Emptying system includes water drainage tank 57, unloading gate 53 and evacuation pump station, water drainage tank 57 is located the cell body bottom of corridor water inlet 56 one side, water drainage tank 57 has gate 53 and connects the evacuation pump station, sewage treatment plant is connected to the evacuation pump station.
The flushing system comprises a flushing gallery 51, a reservoir 59 and a flush valve 52. Each gallery 51 is divided by a water baffle 58 into a flushing gallery 51 and a reservoir 59, the flushing gallery 51 communicating with the storage settler water inlet, and each flushing gallery 51 having a reservoir 59 at its rear. The water baffle 58 is fixed at the bottom of the tank and is provided with a flushing valve 52, and the height of the water baffle 58 is one of the two heights of the tank body. In the continuous water inlet stage, sewage enters the water storage chamber 59 through the water baffle 58, after the regulation and sedimentation tank 5 is emptied, the flushing valve 52 is opened, the sewage in the water storage chamber 59 generates an impulsive force through the gradient of the bottom of the tank body, a reverse flushing water flow from the water storage chamber to the flushing gallery and the drainage groove is formed, and the back flushing of the deposited suspended matters at the bottom of the tank body is realized.
The regulating and settling pond flushing gallery 51 of the embodiment has 8 passages, each passage has a net width of one meter, and eight flushing valves 52 are correspondingly arranged. The height of the clarification overflow weir is set to ensure that the retention time of the rain and sewage combined flow sewage in the regulation and sedimentation tank 5 is set to be 1.0 hour so as to ensure that pollutants in the combined flow sewage are fully precipitated and removed. After the rainfall stops or the sewage stays in the storage and regulation sedimentation tank 5 for more than 1h, the emptying gate 53 is opened, the sewage in the storage and regulation sedimentation tank 5 is pumped to a sewage treatment plant by a water pump for treatment, then the storage and regulation sedimentation tank 5 is backwashed by the water accumulated in the water storage room 59, and then the combined and precipitated sewage is accumulated again.
As shown in fig. 6, the purification system of the water storage type ecological filter 6 comprises a functional matrix layer 68, a sand filter layer 69 and a plant planting layer 67 from bottom to top in sequence, wherein the functional matrix layer 68 and the sand filter layer 69 are collectively called as a packing layer, the height of the packing layer is 1.5m, the functional matrix layer 68 is filled with pyrite and biomass charcoal with the thickness of 50cm and the grain size of about 100 meshes, the sand filter layer 69 is filled with medium sand with the thickness of 100cm and the grain size of 0.2-0.6mm, and the proportion of the filter sand with the grain size of 0.25-0.5mm is more than 50%. The plant planting layer 67 comprises a submerged plant layer and an emergent plant layer, the layer height is set to be 0.8 m to ensure that the filter has larger water storage capacity, reeds with higher stalks are selected for emergent plants, and the planting density is 6 plants per square meter.
The water storage type ecological filter tank comprises a water distribution system and a drainage system. The water distribution system comprises a main water distribution gallery 61, water distribution pipes 62 and a water distribution well 63, wherein the main water distribution gallery 61 is of a structure with height fall and is arranged along the side line and the diagonal line of the pool body, the upper part of the main water distribution gallery is respectively communicated with a clarification overflow port of the storage sedimentation pool and a water inlet of a water storage type ecological filter pool of the water inlet gallery, so that overflow water of the storage sedimentation pool 5 and the water inlet gallery 1 firstly enters the main water distribution gallery 61, the water distribution pipes 62 are arranged at the positions close to the main water distribution gallery 61, and the water distribution pipes 62 are arranged at the bottom of the deep layer of the pool body along the two sides of the main water distribution gallery; two water distribution wells 63 are arranged at the positions far away from the main water distribution gallery 61, the water distribution wells 63 are connected with the main water distribution gallery 61 through pipelines, then water flow is uniformly distributed through thirty water distribution pipes 62, and each water distribution pipe is responsible for 25m2And (4) percolating the filter bed.
The drainage system comprises a drainage gallery, a water collecting well 64, a rainwater pump room 65 and an ecological filter emergency overflow port 66, in the embodiment, the drainage system of the ecological filter is provided with the water collecting well 64, firstly, water is collected through a perforated filter pipe 681 which is horizontally laid at the bottom of a sand filter layer 68, a 45-degree bent pipe and a PVC-U pipe fitting are arranged at the tail end of the perforated filter pipe and extend upwards to be above the liquid level, an air inlet is arranged at the upper part of the perforated filter pipe to serve as a ventilation pipeline of the perforated filter pipe of the filter, rainwater collected through the perforated filter pipe is drained into the water collecting well 64, the water collecting well 64 is connected with the rainwater pump room 65 through the drainage gallery, and the rainwater in the filter is pumped to the surface water body through the rainwater pump room after being purified by the. An ecological filter emergency overflow port 66 is arranged at the upper part of the ecological filter, so that the water storage type ecological filter 6 can also discharge water to surface water through the ecological filter emergency overflow port when the water collecting well discharges water in a heavy rain condition.
The filter design depth of water 1m has certain retaining capacity, sets up level control meter 7 in depth of water 1m department, when the retaining height reaches 1m, the rainwater pump in rainwater pump house 65 is opened and is arranged the rainwater outward and reach the earth's surface water, when the retaining height reaches 1.5m, directly overflows to the earth's surface water through ecological filter emergency overflow mouth 66.
The drainage of the ecological filter tank is discharged into a surface water body in a stream drainage mode after being lifted by a submersible sewage pump, and the installation mode of the submersible sewage pump is automatic coupling installation. The design flow Q of the water pump is 200L/s, the design lift H is 9.0m, the design lift N is 38kW, and the submersible pump adopts frequency conversion control.
Example 2
Aiming at carrying out experimental research on the treatment of the rain and sewage mixed sewage in the city in Yueyang and carrying out experiments in the areas with rain and sewage confluence overflow pollution around three great lakes in Yueyang, the regulation and purification system for controlling the rain and sewage confluence overflow pollution is constructed.
The original structure is combined system drain pipe, sewage treatment plant's sewage pump station and a simple regulation pond. The simple storage pond is an open-air pond and only plays a role in temporarily storing the combined sewage in rainy seasons. The sewage is not classified and classified, so that the tank capacity is 2000m3. When the rain season comes, all the combined sewage exceeding the treatment capacity of the sewage pump station flows into the regulation and storage pond, the sewage in the regulation and storage pond is continuously pumped into a sewage treatment plant after the rain is stopped, the water volume is large, the retention time of the sewage in the regulation and storage pond is long, the bottom of the regulation and storage pond is easy to deposit sludge, the manual dredging engineering quantity and the frequency are low, and the sewage in the regulation and storage pond is easy to blacken and foul.
Transformation and construction:
1) the original combined drainage pipeline is transformed into a water inlet gallery with overflow ports distributed in a stepped manner, namely, a sewage pump station water inlet, a storage and sedimentation tank water inlet, an ecological filter tank water inlet and an emergency overflow port are sequentially arranged on the side wall of the water inlet gallery from bottom to top and respectively lead to a sewage pump station, a storage and sedimentation tank, a water storage type ecological filter tank and a natural water body.
2) The original storage pond is reconstructed into the storage-regulating sedimentation tank and the water-storage type ecological filter tank in the embodiment 1, namely the storage-regulating sedimentation tank comprises a diversion sedimentation system, a drainage system, a backwashing system and a clarification overflow weir, and the effluent of the clarification overflow weir is led to a water-storage type ecological filter tank; the water storage type ecological filter tank comprises a water distribution system, a regular drainage system and a purification system. After the transformation, the tank capacity of the storage regulation sedimentation tank is 400m3The capacity of the water storage type ecological filter tank is 800m3。
3) And (3) setting the connection between the water inlet gallery and the grid, the sewage pump station, the deodorization room, the storage regulation sedimentation tank and the water storage type ecological filter tank according to the connection relation of the implementation 1.
The operation mode of the modified storage and purification system, namely a storage and purification method for controlling rain and sewage confluence overflow pollution, is as follows:
the sewage flowing in fine days, light rain and early rainfall stages is conveyed to a sewage pump station through a pipeline connected with the sewage pump station, and then is conveyed to a sewage plant for treatment by a submersible pump and an existing pressure bearing pipe. The lifting flow of the water pump is automatically adjusted according to the inflow of sewage, so that the sewage can be continuously transported. A grille is additionally arranged in front of the water pump to protect the water pump. The grid slag is conveyed, dehydrated and stored in a slag tank.
Under the working condition of converging sewage twice as much as the rainy day, the high-pollution converging sewage at the earlier stage which is lower than the water inlet of the storage regulation sedimentation tank is still discharged into a sewage plant for treatment; the water quantity continuously rises to reach the confluent sewage diluted by the rainwater at the water inlet position of the storage regulation sedimentation tank, flows into the rainwater storage regulation sedimentation tank and is intercepted in the closed rainwater storage regulation sedimentation tank. Sewage flows into the storage regulation sedimentation tank through the layered diving wall, and the layered diving wall intercepts larger grid slag and suspended matters in the sewage. After the rainfall is finished, the sewage intercepted in the regulation and storage sedimentation tank is pumped by the submersible pump and is conveyed to a sewage plant. The sediment is trapped and precipitated to the bottom of the tank through the regulation and sedimentation tank. The sediment is flushed through the flushing device and simultaneously conveyed to the sewage treatment plant.
When the rainwater storage and sedimentation tank is full due to long-time heavy rain and continuous rainfall events, sewage flows out according to the throttling flow and is conveyed to the water storage type ecological filter tank. The water flow is throttled in order that the sediment can have enough time to stay in the sediment and is not discharged to the impoundment type ecological filter. When the rainwater regulation and storage sedimentation tank is filled up and the inflow water exceeds the throttling capacity flowing out of the rainwater regulation and storage sedimentation tank, the extra rainwater directly flows into the water storage type ecological filter tank through overflow.
In heavy rain days, when the filling state of the storage sedimentation tank and the condition that the continuous sewage inflow flow from the pipeline is greater than the sum of the sewage outflow flow of the storage sedimentation tank and the conveying capacity of a sewage pump station, the water can be choked in a pipeline system, a heavy rainfall line is adopted, and rainwater is directly discharged to the ecological filter tank through the ecological filter tank water inlet on the water inlet gallery. The strongly diluted rain and sewage mixed sewage led into the water storage type ecological filter tank sequentially flows through the sand filter layer, the functional matrix layer and the plant layer from bottom to top in the ecological filter tank, suspended matters are intercepted through the sand filter layer, the functional matrix layer adsorbs and degrades pollutants, the plant layer absorbs pollutants and the like, and the adsorption-biological-plant combined purification treatment is carried out, and when the depth of the water stored in the filter tank reaches 1m, the water is pumped and discharged to the surface water body through the submersible pump. When the water storage depth of the water storage type ecological filter tank reaches 1.5m and the water starts to be stopped up, the stopped up water overflows to the surface water body through the natural gradient.
The rainwater storage and sedimentation tank needs to be evacuated and flushed regularly. In order to drain and guide the limit inflow exceeding the regulation and purification capacity of the regulation and storage sedimentation tank, an emergency overflow port is planned and arranged in front of the rainwater regulation and storage sedimentation tank, and the rainwater directly flows into the surface water body after intercepting large grid slag and suspended matters in the sewage through the layered diving grid under the condition of a heavy rain peak.
The system is used for running and monitoring for 1 year, and monitoring results show that the rain and sewage mixed overflow pollution in an experimental area is controlled, and the concentration of pollutants in sewage discharged into a surface water body can keep COD (chemical oxygen demand) less than 30mg/L, TN (total nitrogen) less than 1.5mg/L and NH (NH) under the working conditions of different rainy seasons and rainfall amounts3N is less than 1.5mg/L, TP is less than 0.3mg/L, namely the water quality index discharged into surface water in the rain and sewage combined flow and drainage area can meet the IV-class water quality standard requirement of the environmental quality standard of surface water (GB3838-2002) by using the regulation and storage purification system for controlling rain and sewage combined flow overflow pollution provided by the invention.
In summary, compared with the prior art that the water body is blackened and smelly due to the introduction of all the confluent sewage into the regulation pond, the regulation and purification system for controlling the rainwater-sewage confluent overflow pollution of the embodiment is provided with the water inlet gallery, the regulation and sedimentation tank and the storage type ecological filter tank, and the water inlets are arranged at different heights of the water inlet gallery to form a gradient line to perform gradient treatment on the confluent sewage, so that the high-pollution sewage in the early stage is discharged into a sewage treatment plant, and the low-pollution sewage can be directly discharged into the water body after being subjected to regulation and sedimentation and subsequent purification and treatment by the storage type ecological filter tank, so that the running load of the sewage treatment plant is reduced, and the problem of blackened and smelly due to the long-term storage of the; secondly, only the tail end of the combined drainage pipeline needs to be improved, so that the construction period is short and the construction difficulty is small; compared with the original simple regulation and storage pond, the size of the existing regulation and storage sedimentation pond and the existing water storage type ecological filter pond is 0.6 times of the original size, the volume and the occupied area are smaller, and the economic and efficient pollution load discharged into a water body can be greatly reduced under the condition of limited regulation and storage volume.

Claims (10)

1. The utility model provides a regulation and purification system that control rain and sewage confluence overflow pollutes, its characterized in that includes intake corridor, sewage pump station, regulation sedimentation tank and retaining type ecological filter, intake corridor includes sewage pump station water inlet, regulation sedimentation tank water inlet, retaining type ecological filter water inlet and the urgent overflow mouth that highly increases in proper order on the intake corridor, the regulation sedimentation tank have with the regulation sedimentation tank clarification overflow mouth that the ecological filter of retaining type is connected to form the gradient circuit that is used for dividing gradient processing confluence system overflow sewage, the gradient circuit includes no rain or little rain volume circuit, well rain volume circuit, long-time lasting well rain circuit, heavy rain volume circuit and torrential rain circuit;
the rain-free or low-rainfall line sequentially comprises a water inlet gallery, a water inlet of a sewage pump station and the sewage pump station, and the sewage pump station is connected with a sewage treatment plant;
the medium rainfall line comprises the no-rain or low rainfall line and also comprises a pipeline formed by a water inlet gallery, a water inlet of the storage and regulation sedimentation tank, a diversion sedimentation system, a venting system and a backwashing system in the storage and regulation sedimentation tank, and the venting system and the backwashing system of the storage and regulation sedimentation tank are both connected with the sewage treatment plant;
the long-time continuous medium rain line comprises the no-rain or small-rain line and a medium rain line, and also comprises pipelines formed by a clarification overflow port of the storage and sedimentation tank, a water distribution system of the water storage type ecological filter tank, a purification system, an automatic oxygenation system and a drainage system, wherein the drainage system is communicated with a natural water body;
the high rainfall line comprises the no-rain or low rainfall line, a medium rainfall line and a long-time continuous medium rainfall line, and also comprises pipelines formed by a water inlet of the water storage type ecological filter tank on the water inlet gallery, a water distribution system of the water storage type ecological filter tank, a purification system, an automatic oxygen charging system and a drainage system, wherein the drainage system is communicated with a natural water body;
the torrential rain circuit comprises the no-rain or low-rain circuit, the medium-rain circuit, the long-time continuous medium-rain circuit and the high-rain circuit, and further comprises a pipeline formed by an emergency overflow port which overflows to a natural water body on the water inlet gallery.
2. The regulation and purification system for controlling the pollution of the rain and sewage confluence overflow of claim 1, wherein the bottom elevation of the water inlet of the sewage pump station on the water inlet gallery is flush with the bottom of the water inlet gallery; the height of the liquid level of the domestic sewage in the water inlet gallery from the bottom of the water inlet gallery in sunny days is H0The setting height of the water inlet of the storage and sedimentation tank in the water inlet gallery is H0～2H0(ii) a The setting height of the water inlet of the water storage type ecological filter tank on the water inlet gallery is 2H0～3H0(ii) a The setting height of the emergency overflow port on the water inlet gallery is 3H0～4H0。
3. The regulation and purification system for controlling rain and sewage confluence overflow pollution as claimed in claim 1, wherein the water storage type ecological filter tank sequentially comprises a sand filtration layer, a functional matrix layer and a plant planting layer from bottom to top, and sewage flows through the filter tank from bottom to top to form the purification system of the water storage type ecological filter tank;
the sand filtering layer adopts medium sand with the grain diameter of 0.2-0.6mm, wherein the proportion of the sand filtering with the grain diameter of 0.25-0.5mm is more than 50 percent, and the filling height of the sand filtering layer is 0.7-1.3 m;
the functional matrix layer adopts pyrite and biomass charcoal with the grain size of 80-100 meshes, the filling ratio is 1:1, a multiple functional matrix layer for collecting iron and carbon micro-electrolysis oxidized organic matters, performing autotrophic denitrification on pyrite and adsorbing nitrogen and phosphorus by the biomass charcoal is formed, and the filling height of the functional matrix layer is 0.3-0.8 m;
the plant planting layer comprises a submerged plant layer and an emergent plant layer, the height of the layer is 0.5-1.1 m, the emergent plant is of a flooding-resistant type, and the planting density is 3-9 plants per square meter.
4. The regulation and purification system for controlling the rain and sewage confluence overflow pollution according to claim 3, wherein the water distribution system of the water storage type ecological filter tank comprises a water distribution main gallery, a water distribution well and a water distribution pipe;
the water distribution main gallery is of a structure with height fall, is arranged along a side line and a diagonal line of the water storage type ecological filter pool body, the upper part of the water distribution main gallery is communicated with a clarification overflow port of the regulation and sedimentation pool and a water inlet of the water storage type ecological filter pool on the water inlet gallery, and the bottom of the water distribution main gallery is respectively connected with a water distribution pipe and a water distribution well which are positioned in the pool body and used for water inlet;
the water distribution pipes are arranged at the bottom of the deep layer of the pool body along the water distribution main corridor, the water distribution wells are arranged at the positions far away from the water distribution main corridor in the pool body, and the plurality of water distribution pipes are radially arranged around the water distribution wells.
5. The regulation and purification system for controlling the overflow pollution of the rain and sewage interflow according to claim 4, wherein the drainage system of the water storage type ecological filter tank comprises a drainage gallery, a water collecting well, a perforated filter pipe, a rainwater pump room and an emergency overflow port of the water storage type ecological filter tank;
the perforated filter pipes are horizontally laid in the functional matrix layer and used for collecting water, rainwater collected by the perforated filter pipes is drained into a water collecting well, the water collecting well is connected with a drainage gallery, the drainage gallery is connected with a rainwater pump room through a drain pipe, and the rainwater pump room is communicated with surface water;
the water storage type ecological filter tank emergency overflow port is located on the upper portion of the water storage type ecological filter tank and is higher than the water collecting well.
6. The system of claim 1, wherein the storage settling tank comprises a plurality of galleries arranged in parallel, and each gallery comprises a gallery inlet, a diversion settling system, a blowdown system, a backwash system and a clarification weir;
the gallery inlets are positioned on the side wall of each gallery inlet and are communicated with the storage and regulation sedimentation tank water inlet, the clarification overflow weir is positioned on the tank wall on the side opposite to the storage and regulation sedimentation tank water inlet, the lower edge of the clarification overflow weir is arranged at the same height as the inlet to the storage and regulation sedimentation tank, and the upper edge of the clarification overflow weir is the storage and regulation sedimentation tank clarification overflow port;
the diversion sedimentation system comprises a plurality of diversion plates, and the diversion plates are obliquely arranged downwards and crosswise on the tank walls on the two sides of each gallery to form a diversion sedimentation tank;
the emptying system comprises a drainage tank, an emptying pump station and a gate, wherein the drainage tank is positioned at the bottom of the pool body close to the entrance of the corridor, the drainage tank is provided with the gate and is connected with the emptying pump station, and the emptying pump station is connected with a sewage treatment plant;
the back flush system includes breakwater and flushometer, the breakwater is located every the corridor afterbody, fix at the bottom of the pool, the height of breakwater does 1/3 ~ 2/3 of the height of cell body, the corridor quilt the breakwater is separated into and is located the corridor of washing between corridor entry and the breakwater and is located the reservoir chamber between breakwater and the clarification overflow weir, it has the drainage tank in the corridor to wash, the bottom of reservoir chamber have from the cell body lateral wall to the slope of the high reduction of breakwater, the flushometer has on the breakwater when the flushometer is opened, form by reservoir chamber to the back flush rivers that wash corridor and drainage tank.
7. The regulation and purification system for controlling rain and sewage confluence overflow pollution according to claim 1, which comprises grid rooms and diving louver walls, wherein the grid rooms are positioned at the water inlet of the sewage pump station, and the diving louver walls are distributed at the water inlet of the regulation and sedimentation tank, the water inlet of the water storage type ecological filter tank and the emergency overflow port.
8. The system of claim 7, wherein the system comprises an air blower and a deodorization room, the air blower is arranged between the grid, the sewage pumping station and the storage and regulation sedimentation tank, the air blower exhausts air to the deodorization room, and a deodorization device is arranged in the deodorization room.
9. A storage regulation and purification method for controlling combined rain and sewage overflow pollution, which is characterized in that the storage regulation and purification system for controlling combined rain and sewage overflow pollution of any one of claims 1 to 8 is adopted to treat combined rain and sewage overflow sewage according to domestic sewage amount and surface runoff amount in rainfall by means of gradient, and specifically comprises the following steps:
(1) in sunny days, a no-rain or low-rain circuit is adopted, sewage in a receiving area flows into a sewage pump station from a water inlet gallery through a water inlet of the sewage pump station, and then is conveyed to a sewage treatment plant by a submersible pump and a pressure-bearing pipe;
(2) when the water storage height is lower than the height of the water inlet of the regulation and storage sedimentation tank, a no-rain or low-rain flow line is adopted, and the rain and sewage mixed sewage with higher concentration flows into a sewage pump station through the water inlet of the sewage pump station and then is sent to a sewage treatment plant by a submersible pump for treatment;
(3) in the middle rain days, namely when the rain and sewage mixed flow exceeds 2 times of the sewage flow in fine days, the combined sewage diluted by the rainwater is accumulated in a large amount in the water inlet gallery, when the mixed sewage is accumulated to the height of the water inlet of the regulation and storage sedimentation tank, a middle rain amount line is adopted, the mixed sewage flows into the regulation and storage sedimentation tank through the water inlet of the regulation and storage sedimentation tank and is intercepted in the closed rainwater regulation and storage sedimentation tank, and when the rainfall descends later, the intercepted sewage in the regulation and storage sedimentation tank is extracted by the submersible pump and is conveyed to a sewage treatment plant;
(4) when the rain lasts for a long time, and the rainwater regulation and sedimentation tank is full, adopting a long-time continuous rain-in line, enabling sewage to flow out through a clarification overflow port of the regulation and sedimentation tank after being settled and clarified by the regulation and sedimentation tank and conveying the sewage into the water storage type ecological filter tank, and starting a rainwater pump to discharge rainwater into a surface water body when a packing layer of the water storage type ecological filter tank is saturated and starts to block water;
(5) in heavy rain days, when the filling state of the storage and sedimentation tank and the continuous sewage inflow flow from the pipeline are larger than the sum of the sewage outflow flow of the storage and sedimentation tank and the conveying capacity of a sewage pump station, the water blocking of a pipeline system can be caused, a heavy rain flow line is adopted, rainwater is directly discharged to the water storage type ecological filter tank through a water inlet of the water storage type ecological filter tank on the water inlet gallery, and the rainwater is discharged to a water body after being purified by the water storage type ecological filter tank;
(6) under the condition of rainstorm, a rainstorm line is adopted, and when the rainwater quantity reaches the height of the emergency overflow port in the water inlet gallery, the rainwater is directly discharged into the surface water body through the emergency overflow port and the drainage ditch.
10. The method of claim 9, wherein the sewage flows through the ecological filter tank as follows:
the overflow water of the storage settling tank and/or the overflow water of the water inlet gallery are introduced into the main water distribution gallery through the upper part of the main water distribution gallery, fall to the bottom of the main water distribution gallery by means of gravity, and then flow into the water distribution pipe positioned at the deep bottom of the water storage type ecological filter tank, so that the sewage is introduced into the tank body from the bottom of the water storage type ecological filter tank, and then sequentially flows through the sand filter layer, the functional matrix layer and the plant planting layer from bottom to top in the water storage type ecological filter tank, purified and then discharged through the water collecting well or the emergency overflow port of the water storage type ecological filter tank;
a liquid level control meter is arranged at the position of 1m of the water storage depth of the water storage type ecological filter tank, a rainwater pump room of a drainage system is controlled through the liquid level control meter, when the water storage height reaches 1m, a rainwater pump in the rainwater pump room is started, water in a water collection well of the water storage type ecological filter tank is drained to a surface water body, and therefore a vertical intermittent operation mode of the water storage type ecological filter tank is formed, and the lower layer filter material pores are guaranteed to be ventilated and oxygenated; the urgent gap height of retaining water type ecological filter is higher than filter material surface 1.5m, guarantees that the filtering pond has high retaining capacity, when retaining height reaches 1.5m, through the direct overflow of retaining type ecological filter urgent gap to earth's surface water.
CN202010144395.8A 2020-03-04 2020-03-04 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution Active CN111285546B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010144395.8A CN111285546B (en) 2020-03-04 2020-03-04 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution
PCT/CN2020/098154 WO2021174722A1 (en) 2020-03-04 2020-06-24 Regulation, storage, and purification system and method for controlling rain and sewage confluence and overflow pollution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010144395.8A CN111285546B (en) 2020-03-04 2020-03-04 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution

Publications (2)

Publication Number Publication Date
CN111285546A CN111285546A (en) 2020-06-16
CN111285546B true CN111285546B (en) 2021-02-09

Family

ID=71024719

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010144395.8A Active CN111285546B (en) 2020-03-04 2020-03-04 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution

Country Status (2)

Country Link
CN (1) CN111285546B (en)
WO (1) WO2021174722A1 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111285546B (en) * 2020-03-04 2021-02-09 湖南恒凯环保科技投资有限公司 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution
CN111977910B (en) * 2020-08-27 2022-10-14 重庆大学 Rainwater runoff treatment substrate and rainwater bioretention pool constructed by same
CN112047535A (en) * 2020-09-28 2020-12-08 中建三局绿色产业投资有限公司 Quality-classified and partition CSO regulation and storage purification system and rainwater purification method
CN112408524B (en) * 2020-12-04 2022-09-16 北控水务(中国)投资有限公司 High-load processing system, method, device and equipment for pipe network regulation and storage coupling water plant
CN113112054B (en) * 2021-03-22 2022-11-22 中建三局绿色产业投资有限公司 High-density built-up area combined system overflow pollution reduction system and linkage joint debugging method
CN113931253A (en) * 2021-10-22 2022-01-14 陕西圣唐乳业有限公司 Method for comprehensively recycling rainwater and sewage with collection structure
CN114057358B (en) * 2021-11-25 2023-10-17 常州大学 Unpowered sewage treatment device and method
CN113943055A (en) * 2021-11-30 2022-01-18 北控水务(中国)投资有限公司 Rural and rural rain sewage confluence quality-divided treatment system and control method
CN114516703A (en) * 2021-12-29 2022-05-20 盐城工学院 Treatment device and treatment method suitable for rural sewage treatment
CN114482246B (en) * 2021-12-30 2024-03-19 中国电器科学研究院股份有限公司 Regulation and storage pond system with quick filtering capability
CN114481940A (en) * 2022-01-12 2022-05-13 苏州金螳螂园林绿化景观有限公司 Ecological restoration system for flood discharge river channel in semiarid region
CN114396108B (en) * 2022-01-18 2024-03-12 中国建筑第八工程局有限公司 Sponge urban rainwater collection and purification treatment system
CN114560599B (en) * 2022-03-17 2023-09-26 北京首创生态环保集团股份有限公司 Flow-dividing urban sewage plant and operation control method thereof
CN114687432B (en) * 2022-03-23 2024-03-15 武汉市政工程设计研究院有限责任公司 Combined rainwater regulation and storage system and method suitable for runoff pollution control
CN114685010A (en) * 2022-03-31 2022-07-01 广东省建筑设计研究院有限公司 Rural sewage collection and treatment system
CN114790770A (en) * 2022-04-26 2022-07-26 扬州大学 Guiding device in sewage inspection well
CN114934420A (en) * 2022-04-28 2022-08-23 南京智水环境科技有限公司 Urban health water circulation system
CN115215505A (en) * 2022-05-25 2022-10-21 中誉设计有限公司 Sewage treatment system with strong impact load resistance
CN115159719A (en) * 2022-06-18 2022-10-11 李永乐 Comprehensive sewage treatment device and treatment system thereof
CN115367953A (en) * 2022-07-21 2022-11-22 上海宏波工程咨询管理有限公司 Rain sewage on-site treatment system suitable for drainage pump station and operation method thereof
CN115337710B (en) * 2022-09-15 2023-05-23 北京建筑大学 Waterlogging ponding layering regulation clean system
CN115490331A (en) * 2022-10-24 2022-12-20 中国电建集团华东勘测设计研究院有限公司 Urban polluted rainwater SBBR treatment device and treatment method for introducing domestic sewage
CN115822070B (en) * 2022-12-15 2023-10-31 无锡浩润环保科技有限公司 Mud removing equipment for rainwater regulation and storage system
CN116102096B (en) * 2023-01-17 2024-03-01 中节能国祯环保科技股份有限公司 Integrated control method and system for urban sewage plant network
CN115821843B (en) * 2023-02-08 2023-04-25 福州市规划设计研究院集团有限公司 Sewage interception and flood drainage integrated drainage device
CN116135801B (en) * 2023-04-18 2023-08-08 江苏龙腾工程设计股份有限公司 Rural ecological wetland purification treatment system
CN116216817A (en) * 2023-04-24 2023-06-06 悉地（苏州）勘察设计顾问有限公司 Sewage interconnection intercommunication and regulation system
CN116655168B (en) * 2023-06-25 2024-03-01 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) Ecological pond system for rapidly intercepting pollutants under initial rain condition to stabilize and purify water quality
CN117005509A (en) * 2023-07-18 2023-11-07 中交一公局集团有限公司 Source control and sewage interception system of river drain
CN116768425B (en) * 2023-08-15 2023-11-03 江苏龙腾工程设计股份有限公司 Ecological wetland system for rural environment lifting
CN116971471B (en) * 2023-09-21 2023-12-12 河南长锦建设工程有限公司辉县市分公司 Intelligent rain and sewage diverter valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000129763A (en) * 1998-10-23 2000-05-09 Tokyo Metropolis Sewage disinfecting system in combined sewerage system
KR100706269B1 (en) * 2005-07-12 2007-04-12 주식회사 환경시설관리공사 A contaminant purification apparatuss of non-point sources by the early-stage storm runoff
CN102220783B (en) * 2011-04-14 2012-10-10 中国市政工程中南设计研究总院 Device and method for controlling urban combined sewerage overflow and rainwater runoff pollution and application thereof
CN202610028U (en) * 2012-03-27 2012-12-19 苏州德华生态环境科技有限公司 Facility for ecological treatment and recycle of rainwater in central business district
CN106430686A (en) * 2016-11-30 2017-02-22 中冶华天工程技术有限公司 Rain sewage disposal system
CN106395938A (en) * 2016-11-30 2017-02-15 中冶华天工程技术有限公司 Storm sewage treatment process and system for old area of city
CN207633469U (en) * 2017-10-30 2018-07-20 武汉圣禹排水系统有限公司 A kind of region fragment based on combined system pipe network is regulated and stored processing drainage system
CN108408802B (en) * 2018-05-18 2023-07-21 清华大学深圳研究生院 Combined pipe network overflow and water pollution integrated reduction system for cooperatively treating combined overflow sewage and river black and odorous water
CN208949078U (en) * 2018-06-15 2019-06-07 王宝贞 A kind of rain dirt mixing water treatment system of big interception ratio
CN111285546B (en) * 2020-03-04 2021-02-09 湖南恒凯环保科技投资有限公司 Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution

Also Published As

Publication number Publication date
CN111285546A (en) 2020-06-16
WO2021174722A1 (en) 2021-09-10

Similar Documents

Publication Publication Date Title
CN111285546B (en) Storage regulation and purification system and method for controlling rain-sewage confluence overflow pollution
CN100400438C (en) Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system
CN109250821B (en) Hierarchical biofiltration retention system
CN105645677A (en) Horizontal flow/vertical flow integrated artificial wetland and operation method thereof
CN112158958B (en) Artificial rainwater wetland system for sponge city construction for removing pollutants in strengthening manner
CN111646645A (en) Clear water runoff production slope protection system and application method thereof
CN105236687B (en) The micro- vertical baffling wetland sewage-treatment plant of aeration of self-cleaning type and method
WO2019061869A1 (en) Integrated rainwater treatment device
CN206089379U (en) Sewage treatment plant is used at distributed family
CN218321068U (en) Multistage vertical flow composite artificial wetland system
CN212669472U (en) Regulation and storage purification system for controlling rain and sewage confluence overflow pollution
CN112624345B (en) Artificial wetland sewage treatment method
CN211770877U (en) A mark septic tank
CN213214475U (en) Rainwater garden capable of enhancing nitrogen and phosphorus removal
CN210887511U (en) Shunting pollution control system for initial rainwater
CN114482246A (en) Regulation storage battery system with quick filtering capability
CN210656406U (en) Rainwater collecting and recycling system
CN211470931U (en) Constructed wetland resistant to flooding exceeding standard
CN210103685U (en) A collection processing system for river course sewage row mouth
CN208087312U (en) The river corridor restoration system of intelligence science and technology wetland unit combination
CN209226781U (en) A kind of drowned flow artificial wet land device for sewage treatment
CN113149371A (en) Stepped rural sewage ecological treatment system and treatment method thereof
CN106698845B (en) Water body restoration system and restoration method
KR102475250B1 (en) Sewage treatment apparatus and method therof
CN220703451U (en) Ecological regulation system for treating initial rainwater

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A regulation, storage and purification system and method for controlling rainwater and sewage confluence overflow pollution

Effective date of registration: 20230921

Granted publication date: 20210209

Pledgee: Bank of Communications Co.,Ltd. Hunan Branch

Pledgor: HUNAN HENGKAI ENVIRONMENTAL PROTECTION INVESTMENT Co.,Ltd.

Registration number: Y2023980058185