CN115367953A - Rain sewage on-site treatment system suitable for drainage pump station and operation method thereof - Google Patents
Rain sewage on-site treatment system suitable for drainage pump station and operation method thereof Download PDFInfo
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- CN115367953A CN115367953A CN202210859839.5A CN202210859839A CN115367953A CN 115367953 A CN115367953 A CN 115367953A CN 202210859839 A CN202210859839 A CN 202210859839A CN 115367953 A CN115367953 A CN 115367953A
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- 239000010865 sewage Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 43
- 238000005352 clarification Methods 0.000 claims description 37
- 239000010802 sludge Substances 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 238000000926 separation method Methods 0.000 claims description 29
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 23
- 238000005276 aerator Methods 0.000 claims description 17
- 238000011001 backwashing Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000005345 coagulation Methods 0.000 claims description 15
- 230000015271 coagulation Effects 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 12
- 238000005189 flocculation Methods 0.000 claims description 12
- 230000016615 flocculation Effects 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 44
- 230000033228 biological regulation Effects 0.000 abstract description 35
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
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- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- 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
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/18—Tanks for disinfecting, neutralising, or cooling sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
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- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- 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
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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Abstract
The invention provides a rainwater and sewage on-site treatment system suitable for a drainage pump station and an operation method thereof. The application of the invention combines rainwater regulation and storage with the in-situ treatment of rainwater sewage, and adopts different operation modes according to different working conditions, so that the rainwater sewage is discharged after treatment, the amount of pollutants discharged by a pump station is reduced to the maximum extent, the pollution of river channels caused by river water discharged by the pump station is effectively relieved, the regulation efficiency is improved, the treatment of sewage by a centralized sewage treatment plant is changed into distributed in-situ treatment, and the problems that the rainwater sewage of a regulation and storage pool is difficult to be conveyed to a sewage treatment plant in rainy seasons and the rainwater sewage of the regulation and storage pool impacts the water inlet amount and the water quality of the sewage treatment plant are solved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a rainwater and sewage on-site treatment system suitable for a drainage pump station and an operation method thereof.
Background
In recent years, by improving the sewage treatment capacity and the rainwater management capacity, the water quality of urban rivers is greatly improved and is no longer a foul water ditch which urban residents can not avoid; rivers represent the most beautiful side of the city and are also the first impression of the city by the tourists. After the point source pollution treatment level of cities is remarkably improved, more and more attention is paid to the problem of pumping station river discharge pollution in rainy days, and rain pollution, overflow pollution and initial rain pollution of a drainage system become prominent bottleneck problems of continuous improvement of urban water environment quality.
In the prior art, in order to reduce the influence of the initial rain runoff pollution on the river channel environment by the lifting and discharging of a pump station, the rain sewage pollution is reduced by arranging a storage pond, and the river discharge pollution of the pump station is relieved, so that the initial rain storage pond is required to be synchronously arranged while a municipal drainage pump station is implemented; or the existing drainage pump station is transformed, and a regulation and storage pool is added.
And newly-built regulation pond is cuted over regulation rain sewage and is handled to town sewage treatment plant, and there is following difficulty at present stage:
1. the construction scale of the storage and regulation pool is limited because the land around most municipal drainage pump stations is quite short;
2. research shows that the existing regulation and storage tank needs to be newly added with a drainage pipe network to be connected with a municipal sewage main pipe, so that the investment is high, and because the treatment capacity of the existing sewage treatment plant is insufficient, the sewage pipe network is in high-water-level operation in rainy seasons, so that the overflow problem occurs in rainy seasons, if a large number of newly-built regulation and storage tanks intercept the rainwater and sewage of the regulation and storage tank to the sewage treatment plant, the overflow capacity of the sewage treatment plant is further intensified, and new pollutant transfer is formed;
3. rainwater collected by a conventional regulation and storage tank in the rainfall period needs to be subjected to peak staggering discharge to a sewage plant for treatment after the water level of a main intercepting pipe is reduced, and rainwater and sewage in the regulation and storage tank are difficult to discharge in a short time in the rainy season due to the fact that a sewage pipe network runs at a high water level in the rainy season, so that the regulation and storage tank still stores water in the next rainfall, and the regulation and storage effect cannot be effectively exerted;
4. there have been studies showing the rainwater sewage contaminant concentration (BOD) of most storage tanks 5 Less than 100 mg/l) is obviously lower than the water quality concentration of the conventional domestic sewage, is not in line with the upgrading and efficiency increasing action of the municipal sewage treatment plant which is greatly promoted at the present stage, and is another burden for the municipal sewage treatment plant. The difficulty can be effectively relieved by constructing an on-site treatment system while the regulation and storage tank is constructed, and the influence on the river water environment is greatly reduced.
Therefore, how to build an on-site treatment system in a drainage pump station effectively saves urban construction land, improves the utilization efficiency of a regulation and storage tank, and reduces the burden of a municipal sewage treatment plant becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Through retrieval, chinese patent with application number CN 201320006019.8 relates to a municipal rainwater storage system, including: rainwater cuts dirty facility, rainwater lift pump station and rainwater regulation pond. Through set up rainwater regulation pond at the pump station, discharge into town sewage treatment pipe network after keeping in the initial stage rainwater, alleviate the pollution of first rain to the river course.
Chinese patent No. CN 202010154970.2, which relates to a combined construction structure of drainage pumping station and storage tank and its operation method, includes rainwater pumping station and primary rainwater storage tank. In dry seasons, collecting and conveying the mixed sewage to a sewage treatment plant for treatment; in rainy season, the regulation and storage tank collects rainwater and then conveys the rainwater to a sewage treatment plant for treatment. The application of the invention jointly constructs the rainwater pump station, the sewage interception pump station and the primary rainwater storage tank of the drainage system, effectively saves the construction land of the pump station and solves the problem that the urban pump station and the storage tank are difficult to implement synchronously.
However, the above patent technologies focus on facilities and structures of the regulation and storage tank, do not consider how to improve the operation efficiency of the regulation and storage tank, and do not consider the adverse effects of rain and sewage of the regulation and storage tank on the operation of municipal pipe networks and urban sewage treatment plants.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a rainwater and sewage on-site treatment system suitable for a drainage pump station and an operation method thereof.
The invention provides a rainwater and sewage on-site treatment system suitable for a drainage pump station, which comprises a water inlet quality monitoring system, an on-site treatment control system, a high-efficiency combined clarification module, a biological treatment module, a water outlet quality monitoring system, a water pump and a valve between devices, wherein:
the inlet water quality monitoring system monitors the water quality of the rainwater collecting tank in real time and sends a detection result to the on-site treatment control system;
the high-efficiency combined clarification module is used for treating the rain sewage, and the treated rain sewage enters the biological treatment module or is directly discharged into the high-level water outlet pool;
the biological treatment module treats the rainwater and sewage from the high-efficiency combined clarification module or the rainwater collecting tank through biological purification, and the treated rainwater and sewage are discharged into the high-level water outlet tank;
the effluent water quality monitoring system monitors the water quality of the water discharged by the high-efficiency combined clarification module and the biological treatment module;
the on-site treatment control system receives the inlet water quality monitoring system, the outlet water quality monitoring system and third-party information, controls the water pump, the valve, the efficient combination clarification module and the biological treatment module after analysis and calculation, and adopts different operation modes according to working conditions.
The lift pump, the valve, the high-efficiency combined clarification module and the biological treatment module are in signal connection;
preferably, the quality of water monitoring system of intaking includes water quality sampling pump, pH analysis appearance, COD analysis appearance, TP analysis appearance, ammonia nitrogen analysis appearance and host computer, and water quality sampling pump offers pH analysis appearance, COD analysis appearance, TP analysis appearance, ammonia nitrogen analysis appearance to carry out the detection and analysis after getting water from the rainwater catch basin, and the host computer gives analysis result real-time transmission for on-the-spot processing control system.
Preferably, the high efficiency combined clarification module comprises: coagulation reaction pond, flocculation reaction pond, mud-water separation pond, mud backwash pump, mud sludge pump and sludge dewaterer, wherein:
the rain sewage is lifted by a water pump and then sequentially enters a coagulation reaction tank and a flocculation reaction tank for continuous dosing, stirring and reaction, then enters a mud-water separation tank for mud-water separation, and the effluent enters a biological treatment module or is directly discharged into a high-level water outlet tank and then enters a river channel through a pipe culvert;
and part of the sludge generated by mud-water separation returns to the coagulation reaction tank after passing through the sludge reflux pump and the separator, and the other part of the sludge and the rest of the sludge generated by mud-water separation are dried by the sludge dewatering machine.
Preferably, still include agitator, medicament dosing pump, mud scraper, mud-water separation board, mud sludge pump, wherein:
the stirrer stirs the coagulation reaction tank and the flocculation reaction tank;
the agent adding pump acts on the coagulation reaction tank, the flocculation reaction tank and the sludge dewatering machine;
the mud scraper and the mud-water separation plate are arranged in the mud-water separation tank, and the mud scraper scrapes mud separated by the mud-water separation plate;
and one part of the mud-water separation tank is conveyed to the sludge dewatering machine through the sludge discharge pump.
Preferably, the biological treatment module comprises an equipment body and process equipment, the process equipment comprises biological filler, an aerator pipe, a filter head and a process aerator, wherein:
rain sewage enters from the bottom of the equipment main body, enters the biological filler after passing through the filter head, is mixed with air pumped by the process aerator, and is discharged from the top of the equipment main body.
Preferably, the device further comprises a backwashing aerator and a backwashing water pump, wherein the backwashing aerator and the backwashing water pump are used for backwashing the biological filler.
Preferably, two water outlets are formed in the top of the equipment main body, and when the biological filler is used for purifying rain sewage, water is discharged from the first water outlet; when the biological filler is backwashed, water is discharged from the second water outlet.
Preferably, the biological treatment module is provided with one or more stages, and when the biological treatment module is provided with a plurality of stages, the rainwater sewage can be purified sequentially through the plurality of stages.
According to the invention, the operation method of the rainwater and sewage on-site treatment system suitable for the drainage pump station comprises the following steps:
and (3) information detection: the inlet water quality monitoring system, the outlet water quality monitoring system and the third-party system detect water quality information and send the water quality information to the on-site treatment control system;
and information receiving and judging step: and the in-situ processing control system analyzes and judges according to the detection result and operates different working modes.
Preferably, the information reception judging step includes:
in dry days, the on-site treatment control system analyzes and judges according to the ammonia nitrogen detection result of the inflow water quality monitoring system, and when the ammonia nitrogen concentration is lower than 15mg/l, the on-site treatment control system operates a low-concentration mode in dry days: the mixed sewage is treated by the biological treatment module and then discharged;
when the ammonia nitrogen concentration exceeds 15mg/l, the dry-land high-concentration mode is operated: the mixed sewage is treated by a secondary biological treatment module and then discharged;
in rainy days, the on-site processing control system operates a rainy-day operation mode according to rainfall information: the initial rainwater is treated by the high-efficiency combined clarification module and then discharged;
the on-site processing control system operates a post-rain operation mode after rainfall is finished according to rainfall information: the rain sewage is treated by the high-efficiency combined clarification module and the biological treatment module in series and then is discharged.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the on-site treatment system is added on the basis of building the storage tank of the drainage pump station, and the storage tank is operated under different working conditions, so that the storage efficiency is improved, the problems that rainwater and sewage in the storage tank is difficult to be conveyed to a sewage treatment plant in rainy season and the rainwater and sewage in the storage tank impact the water inlet amount and water quality of the sewage treatment plant are solved, and meanwhile, the pollution of river channels caused by the river discharge water body of the pump station is effectively relieved.
2. The system can be effectively applied to a drainage pump station for building a rainwater and sewage on-site treatment system, the regulation and storage efficiency is improved, the scale of the regulation and storage pool is reduced, the construction land of the pump station is effectively saved, and the problems of difficult site selection and difficult land acquisition of the regulation and storage pool of the drainage pump station are solved.
3. According to the invention, the rainwater and sewage on-site treatment system of the drainage pump station operates different working conditions according to different water inlet conditions, so that the outlet water of the pump station is purified, the pollutant discharge amount of the pump station is reduced to the maximum extent, and the pollution of the pump station to river discharge water is effectively relieved.
4. The system for treating the rainwater directly reduces the amount of water discharged by the rainwater pump station by running the in-situ treatment system in dry and rainy days, increases the rainwater storage space of the rainwater collecting well and a pipe network, increases the storage capacity of the pump station, reduces the frequency of discharging the river from the pump station and reduces the amount of discharging the river from the pump station.
5. The invention changes the prior conventional drainage and treatment mode through the operation of the on-site treatment system, and the treatment of a centralized sewage treatment plant is changed into distributed on-site treatment. The rainwater sewage stored in the storage tank is treated and then discharged into the river channel after rain, but not into a sewage pipe network and a town sewage treatment plant which are continuously high-load or even overload operation originally, so that water quantity and water quality impact can not be caused to the pipe network and the sewage treatment plant, a newly-built sewage pipe network and the capacity expansion of the sewage treatment plant are not needed, the operation of the existing pipe network and the sewage treatment plant is not influenced, and the construction investment and the operation cost are greatly reduced.
6. The invention can purify and discharge rain sewage in the storage tank within 24 hours by the operation of the on-site treatment system after rain, thereby freeing up space for the storage of next rainfall. When meeting with continuous many days rainfall, conventional regulation pond rain sewage arranges to sewage treatment plant's mode under, because the main pipe water delivery ability of damming is limited, often leads to the regulation pond only to store a pond water, adopts and arranges outward after handling on the spot, very big promotion the efficiency in regulation pond. If the treated water body can be recycled by combining with municipal administration, the reduction total amount of river entering pollution is further improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
figure 1 shows a diagram of the drainage pumping station in-situ treatment system of the present invention.
Figure 2 shows a schematic diagram of a water quality monitoring system of the present invention.
FIG. 3 shows a high efficiency combined clarification block diagram of the present invention.
FIG. 4 shows a diagram of a biological processing module of the present invention.
Fig. 5 shows a flow chart of the mode of operation of the present invention.
In the figure:
Influent water quality monitoring system 3
Water quality sampling pump 301
Host 306
In-place process control system 4
High-efficiency combined clarification module 5
Mud-water separation tank 503
Mud-water separation plate 505
Biological treatment module 6
Effluent water quality monitoring system 7
High-level water outlet pool 9
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in figures 1 to 5, the invention provides a rain sewage on-site treatment system suitable for a drainage pumping station and an operation method thereof. The sampling pump of the inlet water quality monitoring system is positioned in the rainwater collecting well, the rainwater collecting tank is communicated with the regulation and storage tank through a pipe culvert, a gate is arranged in the sampling pump, and the high-efficiency combined clarification module and the biological treatment module are positioned at the top or the side of the regulation and storage tank; the on-site treatment control system receives the signals of the inlet water quality monitoring system, analyzes and calculates the signals, transmits instructions to the lift pump, the valve, the efficient combined clarification module and the biological treatment module, and controls the equipment and the valve to adopt different operation modes according to different working conditions. In dry days, the on-site treatment system treats the mixed sewage; and in rainy days, the waste water is discharged after the treatment of the initial rain. The application of the invention combines rainwater regulation and in-situ treatment of rainwater and sewage, adopts different operation modes according to different working conditions, ensures that the rainwater and sewage are discharged after being treated, reduces the amount of pollutants discharged by a pump station to the maximum extent, effectively relieves the pollution of river channels caused by river discharge water discharged by the pump station, improves the regulation and storage efficiency, changes the treatment of sewage from a centralized sewage treatment plant into distributed in-situ treatment, and solves the problem that the rainwater and sewage in a regulation and storage tank are difficult to be conveyed to the sewage treatment plant in rainy seasons and impact the inflow amount and water quality of the sewage treatment plant caused by the rainwater and sewage in the regulation and storage tank.
More specifically, the invention provides a rainwater and sewage on-site treatment system suitable for a drainage pump station and an operation method thereof, wherein the system comprises a water inlet quality monitoring system, an on-site treatment control system, a high-efficiency combined clarification module, a biological treatment module, a water outlet quality monitoring system, a water pump and a valve between devices; the on-site treatment control system receives the signals of the inlet and outlet water quality monitoring systems and the meteorological information, analyzes and calculates the signals, transmits instructions to the lift pump, the valve, the high-efficiency combined clarification module and the biological treatment module, controls the opening and closing of equipment and the valve, and adopts different operation modes according to different working conditions;
the influent water quality monitoring system comprises a water quality sampling pump, a pH analyzer, a COD analyzer, a TP analyzer, an ammonia nitrogen analyzer and a host; the sampling pump supplies pH, COD, TP and ammonia nitrogen analysis after taking water from the rainwater collecting tank, and the system transmits monitoring result information to the on-site processing control system through wired or wireless signals in real time.
The in-situ treatment control system is in signal connection with the inlet water quality monitoring system, the lift pump, the valve, the high-efficiency combined clarification module and the biological treatment module through wired or wireless signals; the system comprises a lifting pump, a valve, a high-efficiency combined clarification module, a biological treatment module, a control device and a valve, wherein the lifting pump, the valve, the high-efficiency combined clarification module, the biological treatment module, the control device and the valve are connected with the lifting pump, the valve, the high-efficiency combined clarification module and the biological treatment module through a pipeline.
The efficient combined clarification module consists of a coagulation reaction tank, a flocculation reaction tank, a mud-water separation tank and other structural parts, and comprises a stirrer, a mud-water separation plate, a mud scraper, a separator, a sludge reflux pump, a sludge discharge pump, a sludge dewatering machine, a medicament adding pump and other equipment; rain sewage enters a module for treatment after passing through a lift pump, the rain sewage sequentially enters a coagulation reaction tank and a flocculation reaction tank for continuous dosing, stirring and reaction, then enters a mud-water separation tank for mud-water separation to realize water quality purification, and effluent enters a biological treatment module or is directly discharged into a pipe culvert after entering a high-level effluent pool and enters a river channel; and part of the precipitated sludge generated by mud-water separation returns to the front-end coagulation reaction tank through the sludge reflux pump and the separator, and the other part of the precipitated sludge and the rest of the precipitated sludge generated by mud-water separation are dried through the sludge dewatering machine.
The biological treatment module comprises an equipment main body and process equipment, wherein the process equipment comprises biological filler, an aeration pipe, a filter head, a process aerator, a backwashing water pump and the like; rain sewage from the high-efficiency combined clarification module or the rainwater collecting tank lifting pump enters the bottom of the equipment main body, enters a biological filler area after passing through the filter head, is mixed with air pumped by the process aerator, realizes water purification through biological reaction and the adsorption effect of the filler, and is discharged after being detected by a discharged water quality monitoring system. After the operation is carried out for a period of time, the lifting pump and the process aerator are closed, the back washing pump and the back washing aerator are opened to carry out back washing on the biological filler, the back washing pump and the back washing aerator are closed after the back washing is finished, the lifting pump and the process aerator are opened, and the process is repeated.
The effluent water quality monitoring system comprises a pH analyzer, a COD analyzer, a TP analyzer, an ammonia nitrogen analyzer and a host.
The inlet water quality monitoring system transmits monitoring result information to the on-site processing control system in real time through a wired or wireless signal;
in the high-efficiency combined clarification module, the hydraulic retention time of the coagulation reaction tank is 1.0-3.0 min, and the velocity gradient (G) value is 200s -1 ～500s -1 The hydraulic retention time of the flocculation reaction tank is 3min to 5min, and the velocity gradient (G) value is preferably 50s -1 ～150s -1 The mud-water separation tank adopts an inclined plate or an inclined pipe for precipitation separation, the length of the inclined plate or the inclined pipe is not less than 80cm, and the surface hydraulic load is 15m 3 /(m 2 ·h)～40m 3 /(m 2 ·h)。
Preferably, the biological treatment module is characterized in that the ratio of aeration amount to inflow water amount of the process aerator is 5:1 to 10:1, has the effects of removing ammonia nitrogen by nitrification and denitrification.
The invention also provides an operation method of the drainage pumping station on-site treatment system, which comprises the following steps as shown in fig. 5:
when the water quality monitoring system is used in dry days, the on-site treatment control system analyzes and judges the ammonia nitrogen detection result according to the inflow water quality monitoring system, and when the ammonia nitrogen concentration is lower than 15mg/l, the on-site treatment control system operates a low-concentration mode in dry days: starting the lift pump 1, the valve 1, the biological treatment module 1 and the valve 4, and discharging the effluent after the mixed sewage is treated by the biological treatment module;
when the ammonia nitrogen concentration exceeds 15mg/l, the dry-land high-concentration mode is operated: starting the lift pump 1, the valve 1, the biological treatment modules 1 and 2 and the valves 5 and 6, and discharging the effluent after the mixed sewage is treated by the 2-stage biological treatment module;
in rainy days, the on-site processing control system operates a rainy-day operation mode according to rainfall information: opening the gate, starting the lift pump 2, the efficient combined clarification module and the valve 3, and discharging the initial rainwater after the initial rainwater is treated by the efficient combined clarification module;
the on-site processing control system operates a post-rain operation mode after rainfall is finished according to rainfall information: and closing the gate, opening the gates 1, 2, 4 and 6, closing the gate 3, starting the biological treatment modules 1 and 2, and discharging the rain sewage after the rain sewage is treated in series by the efficient combined clarification module and the biological treatment modules.
In the embodiment, when the dry day, the inflow water quality monitoring system measures that the ammonia nitrogen concentration of the rainwater collecting well is 7.8mg/L, the processing control system analyzes and judges according to the ammonia nitrogen detection result (inflow water quality monitoring system) of the inflow water quality monitoring system, and a low concentration mode of running the dry day is adopted: starting a lift pump 1, a valve 1, a biological treatment module 1 and a valve 4, discharging the effluent after the mixed sewage is treated by the biological treatment module, and actually measuring the ammonia nitrogen concentration to be 1.5mg/L by a water quality monitoring system in an implementation case;
in an embodiment, in rainy days, the on-site processing control system operates a rainy-day operation mode according to rainfall information: opening the gate, starting the lift pump 2, the efficient combined clarification module and the valve 3, and discharging the initial rainwater after the initial rainwater is treated by the efficient combined clarification module; in the embodiment, the actually measured ammonia nitrogen concentration of the water quality monitoring system is 3.5mg/L;
the on-site processing control system operates a post-rain operation mode after the rainfall is finished according to the rainfall information: and closing the gate, opening the gates 1, 2, 4 and 6, closing the gate 3, starting the biological treatment modules 1 and 2, and discharging the rain sewage after the rain sewage is treated by the efficient combined clarification module and the biological treatment modules in series, wherein the actual ammonia nitrogen concentration measured by the water quality monitoring system in the embodiment is 1.2mg/L.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a rain sewage is processing system on spot suitable for drainage pumping station, its characterized in that, including the water quality monitoring system of intaking, handle control system on spot, high-efficient combination clarification module, biological treatment module, play water quality monitoring system, water pump and the valve between the equipment etc. wherein:
the inlet water quality monitoring system monitors the water quality of the rainwater collecting tank in real time and sends a detection result to the on-site treatment control system;
the high-efficiency combined clarification module is used for treating the rain sewage, and the treated rain sewage enters the biological treatment module or is directly discharged into the high-level water outlet pool;
the biological treatment module treats the rainwater and sewage from the high-efficiency combined clarification module or the rainwater collecting tank through biological purification, and the treated rainwater and sewage are discharged into the high-level water outlet tank;
the effluent water quality monitoring system monitors the water quality of the water discharged by the high-efficiency combined clarification module and the biological treatment module;
the on-site treatment control system receives the inlet water quality monitoring system, the outlet water quality monitoring system and third-party information, controls the water pump, the valve, the efficient combined clarification module and the biological treatment module after analysis and calculation, and adopts different operation modes according to working conditions;
the lift pump, the valve, the high-efficiency combined clarification module and the biological treatment module are connected by signals.
2. The on-site rainwater and sewage treatment system suitable for the drainage pump station according to claim 1, wherein the intake water quality monitoring system comprises a water quality sampling pump, a pH analyzer, a COD analyzer, a TP analyzer, an ammonia nitrogen analyzer and a host, the water quality sampling pump takes water from the rainwater collecting tank and provides the water to the pH analyzer, the COD analyzer, the TP analyzer and the ammonia nitrogen analyzer for detection and analysis, and the host transmits the analysis result to the on-site treatment control system in real time.
3. The on-site rainwater waste treatment system suitable for the drainage pumping station according to claim 1, wherein the high-efficiency combined clarification module comprises: coagulation reaction pond, flocculation reaction pond, mud-water separation pond, mud backwash pump, mud sludge pump and sludge dewaterer, wherein:
the method comprises the following steps that rain sewage is lifted by a water pump, then sequentially enters a coagulation reaction tank and a flocculation reaction tank for continuous dosing, stirring and reaction, then enters a mud-water separation tank for mud-water separation, and effluent enters a biological treatment module or is directly discharged into a high-level water outlet tank and then enters a river channel through a culvert;
and part of the sludge generated by mud-water separation returns to the coagulation reaction tank after passing through the sludge reflux pump and the separator, and the other part of the sludge and the rest of the sludge generated by mud-water separation are dried by the sludge dewatering machine.
4. The system of claim 3, further comprising a stirrer, a chemical feeding pump, a mud scraper, a mud-water separating plate and a sludge pump, wherein:
the stirrer stirs the coagulation reaction tank and the flocculation reaction tank;
the agent adding pump acts on the coagulation reaction tank, the flocculation reaction tank and the sludge dewatering machine;
the mud scraper and the mud-water separation plate are arranged in the mud-water separation tank, and the mud scraper scrapes mud separated by the mud-water separation plate;
and one part of the mud-water separation tank is conveyed to the sludge dewatering machine through a sludge discharge pump.
5. The system for the in-situ treatment of rainwater sewage suitable for the drainage pump station according to claim 1, wherein the biological treatment module comprises a device body and process equipment, the process equipment comprises biological fillers, an aeration pipe, a filter head and a process aerator, wherein:
rain sewage enters from the bottom of the equipment main body, enters the biological filler area after passing through the filter head, is mixed with air pumped by the process aerator, and is discharged from the top of the equipment main body.
6. The on-site rainwater and sewage treatment system suitable for the drainage pump station according to claim 5, further comprising a backwashing aerator and a backwashing water pump, wherein the backwashing aerator and the backwashing water pump are used for backwashing the biological filler.
7. The on-site rainwater and sewage treatment system suitable for the drainage pump station according to claim 6, wherein the top of the equipment main body is provided with two water outlets, and when the biological filler purifies the rainwater and sewage, water is discharged from a first water outlet; and when the biological filler is backwashed, water is discharged from the second water outlet.
8. The on-site rainwater and sewage treatment system suitable for the drainage pump station according to claim 1, wherein the biological treatment module is provided with one or more stages, and when the biological treatment module is provided with multiple stages, rainwater and sewage can be purified by the biological treatment module sequentially.
9. An operation method of the rainwater on-site treatment system suitable for the drainage pumping station according to any one of claims 1 to 8, characterized by comprising the following steps:
and (3) information detection: the inlet water quality monitoring system, the outlet water quality monitoring system and the third-party system detect water quality information and send the water quality information to the on-site treatment control system;
and information receiving and judging step: and the in-situ processing control system analyzes and judges according to the detection result and operates different working modes.
10. The operating method according to claim 9, wherein the information reception judging step includes:
in dry days, the on-site treatment control system analyzes and judges according to the ammonia nitrogen detection result of the inflow water quality monitoring system, and when the ammonia nitrogen concentration is lower than 15mg/l, the on-site treatment control system operates a low-concentration mode in dry days: the mixed sewage is treated by a biological treatment module and then discharged;
when the ammonia nitrogen concentration exceeds 15mg/l, a dry-land high-concentration mode is operated: the mixed sewage is treated by a secondary biological treatment module and then discharged;
in rainy days, the on-site processing control system operates a rainy-day operation mode according to rainfall information: the initial rainwater is treated by the high-efficiency combined clarification module and then discharged;
the on-site processing control system operates a post-rain operation mode after the rainfall is finished according to the rainfall information: the rain sewage is treated by the high-efficiency combined clarification module and the biological treatment module in series and then is discharged.
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