CN107500482B - Municipal road chemical leakage emergency treatment system based on low-impact rainwater facility - Google Patents

Municipal road chemical leakage emergency treatment system based on low-impact rainwater facility Download PDF

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CN107500482B
CN107500482B CN201710923418.3A CN201710923418A CN107500482B CN 107500482 B CN107500482 B CN 107500482B CN 201710923418 A CN201710923418 A CN 201710923418A CN 107500482 B CN107500482 B CN 107500482B
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water
liquid discharge
tank
liquid
oil separation
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CN107500482A (en
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管运涛
李骐安
郭凤清
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Shenzhen Graduate School Tsinghua University
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Shenzhen Graduate School Tsinghua University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E03F5/16Devices for separating oil, water or grease from sewage in drains leading to the main sewer
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/22Adaptations of pumping plants for lifting sewage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Botany (AREA)
  • Biotechnology (AREA)
  • Analytical Chemistry (AREA)
  • Sewage (AREA)

Abstract

The utility model provides a municipal road chemical leakage emergency disposal system based on low impact rainwater facility, which comprises an oil separation sedimentation tank, a biological detention tank, a water quality on-line monitoring device, a control unit and a liquid discharge pump; the liquid inlet of the oil separation sedimentation tank is communicated with a rainwater and/or accident water inlet, the liquid outlet is communicated with the liquid inlet of the biological detention tank, a first overflow pipe is arranged near the liquid inlet of the oil separation sedimentation tank, a first baffle is arranged in the middle of the oil separation sedimentation tank, and a first liquid discharge pipe connected with a liquid discharge pump is arranged near the liquid outlet of the oil separation sedimentation tank; a second overflow pipe is arranged in the biological detention pond and close to the liquid inlet of the biological detention pond, and the liquid outlet is communicated with a liquid discharge pump through a second liquid discharge pipe; the water quality on-line monitoring device is arranged between a liquid inlet of the oil separation sedimentation tank and a rainwater and/or accident water inlet; the control unit is in communication connection with the water quality on-line monitoring device and the liquid discharge pump. The system can collect and treat the rainwater runoff and simultaneously fully utilize the system to store and treat the accident water during the accident.

Description

Municipal road chemical leakage emergency treatment system based on low-impact rainwater facility
Technical Field
The application belongs to the technical field of environmental risk prevention and rainwater resource utilization, and particularly relates to a municipal road chemical leakage accident water emergency treatment system combined with a low-impact rainwater purification and utilization facility.
Background
In recent years, the incidence of leakage accidents of chemicals in major cities in China is still at a higher level although the incidence of leakage accidents is on a decreasing trend. Accidents of leakage of road chemicals not only cause economic losses and threaten public health, but also affect the local original ecological system. On the other hand, road rainfall runoff is also one of the important factors causing deterioration of ecological environment. With the continuous deep understanding of sponge city concepts, low impact development (Low-Impact Development, LID for short) technology becomes an important means and measure for reducing runoff pollution and realizing rainwater recycling. At present, a rainwater treatment and accident water disposal system is generally arranged independently, for example, a diversion system for accident drainage and clean rainwater is disclosed in China patent application 201310295792.5, the core of the diversion system is a diversion device, but the normal operation of the system is affected due to the failure, damage and the like of a switching device, so that secondary pollution is caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides an emergency disposal system for municipal road chemical leakage based on a low-impact rainwater facility, which is combined with a low-impact rainwater purifying and utilizing facility to serve as a disposal facility for municipal road rainwater and accident water, and an additional accident water disposal system is not needed.
The technical problems of the application are solved by the following technical scheme:
an emergency disposal system for municipal road chemical leakage based on low-impact rainwater facilities comprises an oil separation sedimentation tank, a biological detention tank, a water quality on-line monitoring device, a control unit and a liquid discharge pump; the liquid inlet at the upper part of one side of the oil separation sedimentation tank is communicated with a rainwater and/or accident water inlet, the liquid outlet at the upper part of the other side of the oil separation sedimentation tank is communicated with the liquid inlet at the upper part of one side of the biological detention tank through a first pipeline, a first overflow pipe is further arranged at the position, close to the liquid inlet, in the oil separation sedimentation tank, a first baffle plate which extends downwards from the top of the oil separation sedimentation tank and is close to the bottom of the oil separation sedimentation tank is further arranged at the middle position, a first liquid discharge pipe is further arranged at the position, close to the liquid outlet, in the oil separation sedimentation tank, and the first liquid discharge pipe is connected with a liquid discharge pump; a second overflow pipe is further arranged in the biological detention pond and close to the liquid inlet of the biological detention pond, and a liquid outlet at the bottom of the other side of the biological detention pond is communicated with the liquid discharge pump through a second liquid discharge pipe; the water quality online monitoring device is used for monitoring whether accident water generated by leakage of chemicals exists or not, and is arranged between a liquid inlet at the upper part of one side of the oil separation sedimentation tank and a rainwater and/or accident water inlet; the control unit is in communication connection with the water quality on-line monitoring device and the liquid discharge pump.
Compared with the prior art, the application has the beneficial effects that:
the system can purify and utilize the road rainwater and fully store and treat the accident water during the accident, thereby improving the environmental benefit and economic benefit of the system.
Drawings
FIG. 1 is a schematic diagram of an emergency disposal system for town road chemical leakage in an embodiment of the present application;
FIG. 2 is a schematic diagram of an emergency disposal system for town road chemical leakage in another embodiment of the present application;
FIG. 3 is a schematic diagram of an emergency disposal system for town road chemicals leakage in another embodiment of the present application;
fig. 4 is a schematic flow chart of an automatic control strategy based on a water quality monitoring result in the application.
Detailed Description
The application will be further described with reference to the following drawings in conjunction with the preferred embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
As shown in fig. 1, the embodiment of the application provides an emergency disposal system for municipal road chemical leakage based on low-impact rainwater facilities, which comprises an oil separation sedimentation tank 1, a biological detention tank 2, a water quality on-line monitoring device 3, a control unit 4 and a liquid discharge pump 5; the liquid inlet at the upper part of one side of the oil separation sedimentation tank 1 is communicated with a rainwater and/or accident water inlet 6, the liquid outlet at the upper part of the other side of the oil separation sedimentation tank 1 is communicated with the liquid inlet at the upper part of one side of the biological detention tank 2 through a first pipeline 7, a first overflow pipe 8 is further arranged at the position, close to the liquid inlet, in the oil separation sedimentation tank 1, a first baffle 9 which extends downwards from the top of the oil separation sedimentation tank and is close to the bottom of the oil separation sedimentation tank is further arranged at the middle position, a first liquid discharge pipe 10 is further arranged at the position, close to the liquid outlet, in the oil separation sedimentation tank, of the oil separation sedimentation tank, and the first liquid discharge pipe 10 is connected with a liquid discharge pump 5; a second overflow pipe 11 is further arranged in the biological detention pond 2 and close to the liquid inlet of the biological detention pond, and the liquid outlet at the bottom of the other side of the biological detention pond is communicated with the liquid discharge pump 5 through a second liquid discharge pipe 12; the water quality on-line monitoring device 3 is used for monitoring whether accident water generated by leakage of chemicals exists or not, and is arranged between a liquid inlet at the upper part of one side of the oil separation sedimentation tank and a rainwater and/or accident water inlet; the control unit 4 is in communication connection with the water quality on-line monitoring device 3 and the liquid discharge pump 5. In this embodiment, it is preferable that the sewage treatment device further comprises a third liquid discharge pipe 13, a fourth liquid discharge pipe 14, a first valve 15, a second valve 16 and an accident water carrying container 17, wherein one end of the third liquid discharge pipe 13 is connected with the liquid discharge pump 5 through the first valve 15, and the other end is communicated with a municipal sewage pipe network 18; one end of the fourth liquid discharge pipe 14 is connected with the liquid discharge pump 5 through a second valve 16, and the other end is communicated with an accident water carrying container 17; the control unit may also be used to control the first valve 15 and/or the second valve 16 (not shown in the figures), the solid arrows in fig. 1 indicating the flow direction of the liquid.
In another embodiment, as shown in fig. 2, the system further comprises a third valve 20, the outlet of the bio-resident tank is further in communication with the second conduit 21 via the third valve 20, the second drain 12 is located between the third valve 20 and the outlet of the bio-resident tank, the control unit 4 is further in communication with the third valve 20, and the third valve 20 is closed when a chemical leak occurs. Wherein, the oil separation sedimentation tank 1 is used as a rainwater and/or accident water pretreatment link and an adjusting tank, and can be constructed by reinforced concrete and is subjected to impermeable treatment. The oil separation sedimentation tank adopts upper inlet and upper outlet (liquid is fed from the upper part of one side and discharged from the upper part of the other side to the subsequent biological detention tank). The biological retention tank is used as a temporary storage and treatment unit for accident water together with a subsequent treatment unit during the accident of chemical leakage. The device can remove part of organic matters and suspended particles in rainwater and accident water, and the first baffle plate 9 arranged in the middle can slow down the flow rate and increase the residence time of the accident water in the pool. After the leakage accident is over, the device can be started manually, or the liquid discharge pump 5 can be started under the control of the control unit to discharge accident water, rainwater, diluent and the like into the accident water carrying container 17, so that the temporary storage and treatment unit of the accident water is ensured to have enough volume to store the next rainfall runoff or the accident water is converged. Later rainwater which cannot be timely discharged to the rear biological detention pond during rainfall can be discharged into the surrounding environment or municipal rainwater pipe network or municipal sewage pipe network 32 through overflow pipe 8 according to the field conditions; after the rainfall is finished, the liquid discharge pump 5 can be started by the control unit, and the stored initial rain is discharged into the municipal sewage pipe network 18, so that the pollution caused by the fact that the initial rain is directly discharged into the environment is avoided. The sludge at the bottom of the oil separation sedimentation tank can be cleaned regularly, the treatment effect of the oil separation sedimentation tank is ensured, and the blocking of the oil separation sedimentation tank is prevented.
The biological detention pond 2 is a rainwater and/or accident water treatment pond, has been subjected to impermeable treatment, and can adopt a mode of up-in and down-out (liquid inlet from the upper part of one side and liquid outlet from the lower part of the other side). After the accident, the hydraulic pump 5 can be started manually, or the control unit can be used for controlling and starting the hydraulic pump to discharge the accident water, rainwater, diluent and the like to the accident water carrying container 17, if the liquid outlet of the biological detention pond 2 is further provided with a third valve and a second pipeline (as in the embodiment shown in the figure 2), the third valve should be closed when the accident occurs. Excess late stage rain water during rainfall may drain through overflow pipe 11 into the surrounding environment or municipal rain water or sewage network 32. Rainwater treated by the biological detention pond can be discharged to a municipal sewage pipe network 18 through a drainage pump 5 (the embodiment shown in fig. 1) and can also enter a subsequent water tank (the embodiment shown in fig. 3 below); when no water tank is provided, the treated stormwater may be discharged to the surrounding environment or municipal stormwater or sewage network 32 via the third valve and the second conduit (as in the embodiment shown in fig. 2 above). The biological detention pond has stuffing layered arrangement, including bark covering layer, soil replacing layer, sand layer, gravel layer, etc. to trap and treat rain water and accident water pollutant in situ.
In yet another embodiment, as shown in fig. 3, the difference compared to the embodiment shown in fig. 2 is that: the system also comprises a water tank 19, a liquid outlet of the biological retention tank 2 is communicated with a liquid inlet at the upper part of one side of the water tank 19 through a second pipeline 21, and a third valve 20 is arranged on the second pipeline 21 between the second liquid discharge pipe 12 and the liquid inlet of the water tank 19; the water tank 19 is blocked from the bioretention tank 2 by a third valve 20 in case of chemical leakage. Preferably, the framework in the water tank 19 is formed by splicing a plurality of plastic modules (such as PVC modules) (not shown), a microporous aeration device 22 is further arranged at the bottom in the water tank 19, a second baffle 23 which extends downwards from the top of the water tank and is close to the bottom of the water tank is further arranged at a position close to the liquid inlet of the water tank, and a third overflow pipe 24 is further arranged between the second baffle 23 and the liquid inlet of the water tank; the control unit 4 is also in communication with the micro-porous aeration device 22; further, the liquid outlet at the other side of the water tank is connected with a reuse water pump 26 through a third pipeline 25, the water tank further comprises a rainwater reuse pipe 27 connected with the reuse water pump, a second water quality on-line monitoring device 28 for monitoring the water quality of the reuse water is further arranged on the rainwater reuse pipe 27, and the second water quality on-line monitoring device 28 and the reuse water pump 26 are both in communication connection with the control unit 4. Further, a third liquid discharge pipe 29 and a disinfection device 30 for disinfecting the reuse water are arranged between the second water quality on-line monitoring device 28 and the reuse water pump 26; one end of the third liquid discharge pipe 29 is communicated with the rainwater recycling pipe 27 through a fourth valve 31, and the other end is communicated with the municipal sewage pipe network 18.
The water tank can be arranged according to the requirement, and the arranged water tank is subjected to permeation prevention treatment and is used for storing and purifying rainwater and maintaining the water quality of the rainwater for a period of time so that the rainwater meets the water quality standard of miscellaneous water. The oil separation sedimentation tank and the biological retention tank at the front end are blocked by an electrically operated valve (third valve 20) during the chemical leakage accident. The skeleton of the water tank can be formed by splicing a plurality of plastic modules (such as PVC), and the shape of the skeleton can be adjusted according to local characteristics and requirements. According to experimental results, after rainwater enters the water tank, a biofilm can be attached and grown on the plastic module, the water quality of the stored water can be maintained to meet the standard of miscellaneous water within 15 days, and the two baffles 23 arranged in the water tank can reduce the scouring of the feed liquor to the biofilm on the plastic module. The stored reuse water can be used for greening surrounding municipal roads, cleaning roads and vehicles, flushing and diluting road accident water and the like. The disinfection device 30 is arranged at the water outlet of the water tank and is used for disinfecting the reuse water before use, so that the safety of the reuse water is ensured. The microporous aeration device 22 is arranged in the water tank, and the microporous aeration device 22 is started by the control unit 4 to perform aeration when the water quality of the water discharged from the water tank does not reach the standard, so that the dissolved oxygen content in the reuse water is improved, the activity of aerobic microorganisms is improved, the removal capacity of organic matters in the reuse water is improved, and the water quality of the discharged water is improved; when the water quality is not up to standard continuously or the water tank and the like needs to be maintained, the control unit or manual operation is used for starting the reuse water pump 26 to empty the water tank, and the reuse water is discharged to the municipal sewage pipe network 18. Wherein the bottom of the portion of the second conduit 21 connecting the bio-retentive tank 2 and the water tank 19 extending into the bio-retentive tank is provided with perforations (not shown in the figures).
The water quality on-line monitoring device is used for monitoring the water quality of the inlet water, namely whether the chemical leakage produces accident water or not, the second water quality on-line monitoring device is used for detecting the water quality of the outlet water, and the opening and closing of each valve, each pump, each microporous aeration device and the like are controlled through the connection control unit so as to ensure the normal operation of the system and the safety of the reuse water.
And the input end of the control unit is connected with the signal output ends of the water quality on-line monitoring device and the second water quality on-line monitoring device, and the output end of the control unit can be selectively connected with the input ends of each valve, each pump and each microporous aeration device according to the needs. The control unit can be operated and controlled manually while automatically running, the system can be debugged manually, the normal running of the system is ensured, and meanwhile, the system can be assisted by manual operation to treat accident water when an accident happens. The control unit can also be internally provided with a remote sensor, and the remote sensor can transmit accident signals to a traffic management department during accidents so as to ensure proper disposal of accident water after the accidents.
The whole system can be controlled by one control unit, and different units can be controlled by a plurality of control units respectively, for example, the control unit can comprise a water inlet control unit and a water outlet control unit, the water inlet control unit stores water quality indexes of water inlet, the aim is to monitor accident water, the control valve 20 enables the water tank to be separated from the biological detention pond during the accident, and the accident water is prevented from polluting the water tank for reuse; meanwhile, the rainwater and accident water drainage pump 5 is controlled to be started after rainfall, and the oil separation sedimentation tank and the biological detention tank are emptied in time, so that the oil separation sedimentation tank and the biological detention tank are ensured to have enough effective volume all the time. The water outlet control unit stores water quality index of the water to monitor the water quality of the reuse water, and the reuse water pump 26, the microporous aeration device 22 and the like are controlled to ensure the stability and safety of the water supply of the reuse water, as shown in fig. 4, which is a schematic flow chart of an automatic control strategy based on the water quality monitoring result. Wherein (a) is a schematic flow chart controlled by the water inlet control unit, and (b) is a schematic flow chart controlled by the water outlet control unit.
Under normal conditions where no chemical leakage event occurs: the rainfall runoff in the catchment area is firstly catchments into an oil removal sedimentation tank through drainage pipes on two sides of the municipal road, and enters a biological detention tank for osmotic filtration after pretreatment, organic matters and particulate matters in the rainfall runoff are adsorbed and degraded, and a system (a water tank and the like) provided with a rainwater recycling unit discharges rainwater treated by the biological detention tank into the water tank for storage and purification of rainwater; the system without a rainwater recycling unit discharges the effluent of the biological detention pond into the surrounding environment or municipal rainwater/sewage pipe network. And after the rainfall is finished, starting a liquid discharge pump through a control unit to discharge the primary rain stored in the oil separation sedimentation tank and/or the biological detention tank into the municipal sewage pipe network according to actual conditions. The rainwater entering the water tank is conveyed outwards by the reuse water pump, the reuse water is disinfected by the disinfecting device before conveying, and meanwhile, the water quality of the reuse water is monitored by the second water quality monitoring device. When the water quality of the recycled water does not reach the standard, the control unit is used for closing the recycled water pump, and simultaneously, the microporous aeration device is started to carry out aeration oxygenation on the stored water in the water tank until the water quality reaches the standard. The reuse water which does not reach the standard is discharged to the municipal sewage pipe network through a reuse water pump.
In an emergency situation where a chemical leak accident occurs: when an accident occurs, accident water in the municipal road catchment area is collected into the oil separation sedimentation tank along with accident water diluent and the like, the water quality monitoring device reacts before entering the oil separation sedimentation tank, and the third valve 20 is closed through the control unit to isolate the water tank from the biological detention tank. The oil separation sedimentation tank and the biological detention tank temporarily store and process the mixed water of the accident water and the diluent, etc. When the catchment flow exceeds the design volume, the catchment flow is discharged into a municipal sewage pipe network through an overflow pipe arranged at the liquid inlet end of the oil separation sedimentation tank. The control unit sends out a signal to inform a traffic department when the accident happens, and assists the system to treat the leakage accident; after an accident occurs, a valve 15 of a liquid discharge pipe of the oil separation sedimentation tank connected with the municipal sewage pipe network is closed, and a liquid discharge pump is controlled to be started by a manual or control unit to discharge accident water in the oil separation sedimentation tank and the biological detention tank to an accident water carrying container; meanwhile, the oil separation sedimentation tank and the biological detention tank are cleaned after the accident occurs.
In addition, the oil separation sedimentation tank can be designed according to the initial rainwater quantity in the water collecting area; the total volume of the oil separation sedimentation tank and the biological detention tank can be designed according to the volume capable of accommodating the accident water volume, the rainfall runoff volume during the accident elimination and the accident water flushing volume, and the aim is to enable the system to still effectively collect and treat the accident water under the most adverse condition; the volume of the water tank can be determined according to daily design rainfall and daily water demand. When the daily water demand is larger than the design daily rainfall collectable water quantity of the catchment area, the rainwater collecting utilization amount is preferably designed daily rainfall, and the design daily rainfall thickness (mm) is selected according to the local daily rainfall data; when the collectable water quantity of the catchment area is larger than the daily water quantity, the rainwater collection utilization quantity is calculated by using the water quantity, and the water tank volume can be determined according to the water storage quantity of three to five times of the daily water quantity, so that the daily collected rainwater quantity of the reuse water unit can be used up in three to five days. The method mainly aims at utilizing collected rainwater as much as possible and reducing the water consumption of tap water; meanwhile, on the basis of not increasing the pool capacity, the water tank can be supplemented by utilizing the subsequent rainfall to improve the utilization efficiency of rainwater recycling, so that the rainwater recycling is more economical.
The foregoing is a further detailed description of the application in connection with the preferred embodiments, and it is not intended that the application be limited to the specific embodiments described. It will be apparent to those skilled in the art that several equivalent substitutions and obvious modifications can be made without departing from the spirit of the application, and the same should be considered to be within the scope of the application.

Claims (10)

1. An emergency disposal system for urban road chemical leakage based on low-impact rainwater facilities, which is characterized in that: comprises an oil separation sedimentation tank, a biological detention tank, a water quality on-line monitoring device, a control unit and a liquid discharge pump;
the liquid inlet at the upper part of one side of the oil separation sedimentation tank is communicated with a rainwater and/or accident water inlet, the liquid outlet at the upper part of the other side of the oil separation sedimentation tank is communicated with the liquid inlet at the upper part of one side of the biological detention tank through a first pipeline, a first overflow pipe is further arranged at the position, close to the liquid inlet, in the oil separation sedimentation tank, a first baffle plate which extends downwards from the top of the oil separation sedimentation tank and is close to the bottom of the oil separation sedimentation tank is further arranged at the middle position, a first liquid discharge pipe is further arranged at the position, close to the liquid outlet, in the oil separation sedimentation tank, and the first liquid discharge pipe is connected with a liquid discharge pump;
a second overflow pipe is further arranged in the biological detention pond and close to the liquid inlet of the biological detention pond, and a liquid outlet at the bottom of the other side of the biological detention pond is communicated with the liquid discharge pump through a second liquid discharge pipe;
the water quality online monitoring device is used for monitoring whether accident water generated by leakage of chemicals exists or not, and is arranged between a liquid inlet at the upper part of one side of the oil separation sedimentation tank and a rainwater and/or accident water inlet;
the control unit is in communication connection with the water quality on-line monitoring device and the liquid discharge pump.
2. The system of claim 1, wherein: the system also comprises a third liquid discharge pipe, a fourth liquid discharge pipe, a first valve, a second valve and an accident water carrying container; one end of the third liquid discharge pipe is connected with the liquid discharge pump through the first valve, and the other end of the third liquid discharge pipe is communicated with a municipal sewage pipe network; one end of the fourth liquid discharge pipe is connected with the liquid discharge pump through the second valve, and the other end of the fourth liquid discharge pipe is communicated with an accident water carrying container; the control unit is also used for controlling the first valve and/or the second valve.
3. The system of claim 1, wherein: the system also comprises a third valve, the liquid outlet of the biological detention pond is communicated with a second pipeline through the third valve, the second liquid discharge pipe is positioned between the third valve and the liquid outlet of the biological detention pond, the control unit is also in communication connection with the third valve, and the third valve is closed when chemical leakage occurs.
4. A system as claimed in claim 3, wherein: the system also comprises a water tank, and the second pipeline is communicated with a liquid inlet at the upper part of one side of the water tank.
5. The system as recited in claim 4, wherein: the framework in the water tank is formed by splicing a plurality of plastic modules, a microporous aeration device is further arranged at the bottom in the water tank, a second baffle plate which extends downwards from the top of the water tank and is close to the bottom of the water tank is further arranged at a position close to the liquid inlet of the water tank, and a third overflow pipe is further arranged between the second baffle plate and the liquid inlet of the water tank; the control unit is also in communication connection with the microporous aeration device.
6. The system as recited in claim 4, wherein: the liquid outlet of the other side of the water tank is connected with a reuse water pump through a third pipeline, the water tank further comprises a rainwater reuse pipe connected with the reuse water pump, a second water quality on-line monitoring device for monitoring the water quality of reuse water is further arranged on the rainwater reuse pipe, and the second water quality on-line monitoring device and the reuse water pump are all in communication connection with the control unit.
7. The system of claim 6, wherein: a third liquid discharge pipe and a disinfection device for disinfecting the reuse water are also arranged between the second water quality on-line monitoring device and the reuse water pump; one end of the third liquid discharge pipe is communicated with the rainwater recycling pipe through a fourth valve, and the other end of the third liquid discharge pipe is communicated with a municipal sewage pipe network.
8. The system of any one of claims 1-7, wherein: and a remote sensor is also arranged in the control unit.
9. A system as claimed in claim 3 or 4, wherein: the bottom of the part of the second pipeline extending into the biological detention pond is provided with a perforation.
10. The system as recited in claim 4, wherein: the oil separation sedimentation tank, the biological detention tank and the water tank are all subjected to anti-permeation treatment.
CN201710923418.3A 2017-09-30 2017-09-30 Municipal road chemical leakage emergency treatment system based on low-impact rainwater facility Active CN107500482B (en)

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CN111333208A (en) * 2020-03-05 2020-06-26 四川省公路规划勘察设计研究院有限公司 Tunnel out-of-hole emergency processing system

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