CN212104425U - Regulation and storage system suitable for combined flow shutoff type sewage pipe network - Google Patents
Regulation and storage system suitable for combined flow shutoff type sewage pipe network Download PDFInfo
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- CN212104425U CN212104425U CN202020582846.1U CN202020582846U CN212104425U CN 212104425 U CN212104425 U CN 212104425U CN 202020582846 U CN202020582846 U CN 202020582846U CN 212104425 U CN212104425 U CN 212104425U
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Abstract
The utility model relates to a regulating and storing system suitable for a combined flow shutoff type sewage pipe network, a water inlet of a water taking pump room is connected with the current sewage pipe network through a water taking pipe and a water inlet valve, a water quality monitoring device for acquiring COD and BOD data is arranged in a front pool of the water taking pump room, and a water outlet pipeline is connected with the inlet of a grit chamber; the storage pond is divided into a high-concentration area and a low-concentration area by a partition wall, and the bottom of the partition wall is provided with an adjusting gate communicated with the high-concentration area and the low-concentration area; the grit chamber is provided with a first pipeline connected to the high-concentration area of the storage pond, and the grit chamber is provided with a second pipeline connected to the low-concentration area of the storage pond; a first electric valve is arranged on the first pipeline; the second pipeline is provided with a second electric valve; the high-concentration area of the storage pond is connected to the front pool of the water taking pump house through a first water outlet pump set, and the low-concentration area of the storage pond is connected to the river channel through a sewage treatment facility through a water outlet of a second water outlet pump set. The utility model discloses rainwater overflow leads to the difficult problem of sewage treatment plant overload operation to intercepting sewage pipe when effectively solving the torrential rain.
Description
Technical Field
The utility model relates to a be suitable for regulation system of confluence system formula sewage pipe network of damming. The system is suitable for regulating and storing initial rainwater.
Background
Along with city rapid development and population density constantly increase, infrastructure construction such as city underground municipal drainage pipe network is unable in time to expand, and in some regions in city because the construction age is earlier, rain, sewage pipe are not reformed transform completely in the region, along with increase of people's mouth and local transformation in the district, and partial district sewage exists the misconnection and arranges in disorder to and phenomenon such as the mixed flow of individual district rain sewage is very serious. The condition that rain and sewage are mixed and spliced in a wrong way exists in the hidden culvert section in the main river basin, partial sewage is not effectively collected and is directly discharged into the river, a large amount of pollutants are discharged into the river to cause the black and odorous river channel, and the whole ecological environment and the living environment of nearby residents are seriously influenced.
The most fundamental measure for treating the black and odorous water body in the river channel is to carry out rain and sewage mixed grafting treatment on a confluence pipe network in the city, and prevent sewage from entering the river channel to pollute the river channel water system ecology. However, for some old urban areas, the municipal drainage system has a plurality of mixed junction points, and basically belongs to a combined system. If the mode of checking and modifying one by one is adopted, the project is huge, the period is long, and the pollution source can not be effectively controlled to enter the rainwater pipeline in the near term. Therefore, the closure mode is adopted to carry out closure reconstruction on the mixed flow pipeline in the near period, and the sewage mixed with the rainwater pipeline in dry seasons can enter a sewage system through the closure pipeline so as to prevent the polluted substances from entering the river channel and causing irreversible influence on the water environment ecology.
However, the method has a problem that more intercepting wells are newly built in the urban drainage pipe network, namely, when a rainy season comes, more rainwater is mixed in the confluence pipeline, especially in a rainstorm period. A large amount of rainwater remains overflow to a sewage interception pipeline and then enter a sewage system, so that the concentration of sewage entering a sewage treatment plant is reduced, and the sewage treatment water volume is suddenly increased, and exceeds the design scale of the sewage treatment plant.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the regulation and storage system suitable for the combined flow shutoff type sewage pipe network is provided to solve the problem that the existing combined flow shutoff type sewage pipe network system shuts off excessive rainwater and enters a sewage pipeline during rainstorm to cause overload operation of a sewage treatment plant.
The utility model discloses the technical scheme who adopts is a regulation system who is suitable for confluence system formula sewage pipe network of damming, its characterized in that: the system is provided with a water taking pump room, a storage pond, a grit chamber, a sewage treatment facility, a water quality monitoring device and a PLC;
the water intake pump room water inlet is connected with the current sewage pipe network through a water intake pipe and a water inlet valve, the water intake pump room forebay is provided with a water quality monitoring device for acquiring COD and BOD data, and the water outlet pipeline is connected with the inlet of the grit chamber;
the storage pond is divided into a high-concentration area and a low-concentration area by a partition wall, and the bottom of the partition wall is provided with an adjusting gate for communicating the high-concentration area with the low-concentration area;
the grit chamber is provided with a first pipeline connected to the high-concentration area of the storage pond, and the grit chamber is provided with a second pipeline connected to the low-concentration area of the storage pond; a first electric valve is arranged on the first pipeline; the second pipeline is provided with a second electric valve;
the high-concentration area of the storage pond is connected to the front pool of the water taking pump house through a first water outlet pump set, and the low-concentration area of the storage pond is connected to a river channel through a sewage treatment facility through a water outlet of a second water outlet pump set;
the first electric valve, the second electric valve, the water quality monitoring device, the first water outlet pump group, the second water outlet pump group and the adjusting gate are connected with the PLC through circuits.
The PLC is used for acquiring data of the water quality monitoring device, and when the COD and BOD concentrations are higher than a set high value, the PLC controls the first electric valve to be opened and the second electric valve to be closed, so that the sewage in the grit chamber enters the high concentration area of the storage pond through the first pipeline; when COD and BOD are lower than a set low value, controlling the first electric valve to close and the second electric valve to open so that the sewage in the grit chamber enters the low concentration area of the storage pond through a second pipeline;
the first water outlet pump group and the second water outlet pump group are controlled to discharge sewage in a high concentration area and a low concentration area respectively in sunny days.
The water intake pipeline is communicated with an inspection well in a current sewage pipe network, and the elevation of the inlet of the water intake pipeline is slightly higher than the elevation of the bottom of the inspection well by 20 cm.
And the PLC is connected with a rain gauge for judging rainy days or sunny days.
The sewage treatment facility is provided with an MBBR membrane tank and a high-density sedimentation tank.
The bottom of the storage pond has a certain slope, and the slope direction flows from the low concentration area to the high concentration area.
The first water outlet pump group is arranged at the lowest part of the high-concentration area of the storage pond; and the second water outlet pump group is positioned in the low-concentration area of the storage pond and close to the partition wall, and is 40-80 cm higher than the bottom of the storage pond.
The first water outlet pump group is provided with a first liquid level meter, and a second liquid level meter is arranged corresponding to the second water outlet pump group.
And a back flushing pipeline is arranged at the bottom of the storage pond, and the flushing flow direction is parallel to the gradient flow direction at the bottom of the storage pond.
The back washing pipeline is connected to a nearby river channel.
The utility model has the advantages that: the utility model discloses cause the water intaking pump house forebay with the sewage among the current situation sewage system when raining to send the sewage in the water intaking pump house forebay to the high concentration district or the low concentration district in the regulation pond through the grit chamber according to COD and BOD concentration in the water intaking pump house forebay, and send the sewage in the high concentration district back to current situation sewage system when the day is fine, send the upper clear sewage that stews in the low concentration district to the river course after sewage treatment facility handles.
The utility model discloses separately save high concentration sewage and low concentration sewage when raining to send to the river course after the low concentration sewage treatment when fine, rationally handle sewage, reduce sewage treatment plant's sewage treatment capacity.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
FIG. 2 is a schematic structural diagram of a storage pond in the embodiment.
FIG. 3 is a sectional view of the high concentration zone of the storage pond in the example.
FIG. 4 is a sectional view of a low concentration zone of the storage pond in the example.
Fig. 5 is a sectional view of the intake pump house forebay in the embodiment.
In the figure: 1. a water intake pump house; 2. a water intake pump house forebay; 3. a grit chamber; 4. a storage pond; 401. a high concentration region; 402. a low concentration region 402; 5. a water intake pipe; 6. an inspection well; 7. a water inlet valve; 8. a submersible sewage pump; 9. adjusting a gate; 11. a first conduit; 12. a second conduit; 13-1, a first electrically operated valve; 13-2, a second electrically operated valve; 14. a first water outlet pump group; 15. a second water outlet pump group; 16. an MBBR membrane pool; 17. a high-density sedimentation tank; 18. a water quality monitoring device.
Detailed Description
As shown in fig. 1, the present embodiment is a storage and regulation system suitable for a combined-flow shutoff sewage pipe network, and includes a water intake pump house 1, a grit chamber 3, and a storage and regulation pond 4. As shown in fig. 2 to 4, in this example, the storage pond 4 is partitioned into a high concentration zone 401 and a low concentration zone 402 by a partition wall, and a communication port for communicating the high concentration zone 401 and the low concentration zone 402 is provided in the bottom of the partition wall and an adjustment gate 9 is provided.
In the embodiment, the water inlet of the water taking pump room 1 is communicated with the inspection well 6 of the current sewage system through the water taking pipe 5, the elevation of the water inlet of the water taking pipe 5 is 20cm higher than the bottom of the inspection well 6, and the water taking pipe is provided with a water inlet valve 7 for controlling the on-off of the water taking pipe 5.
As shown in fig. 5, a water quality monitoring device 18 is arranged in the water intake pump room forebay 2 in front of the water intake pump room 1 and is used for acquiring COD and BOD data in the water intake pump room forebay 2. In this embodiment, a submersible sewage pump 8 is arranged in the water intake pump room forebay 2, the submersible sewage pump 8 is communicated with the water inlet of the grit chamber 3 through a pipeline, and a pump front liquid level meter is arranged in the water intake pump room forebay 2 corresponding to the submersible sewage pump 8 so as to obtain the real-time liquid level in the water intake pump room forebay 2.
In the embodiment, the water outlet of the grit chamber 3 is respectively communicated with a high-concentration area 401 and a low-concentration area 402 of the storage pond 4 through a first pipeline 11 and a second pipeline 12, a first electric valve 13-1 is arranged on the first pipeline 11, and a second electric valve 13-2 for controlling the on-off of the pipelines is arranged on the second pipeline 12.
In the present embodiment, the bottom plate of the storage pond 4 has a certain slope, and the slope is inclined downwards from the low-concentration zone 402 side to the high-concentration zone 401 side. A first water outlet pump group 14 is arranged in the high concentration area 401, the first water outlet pump group 14 is positioned in a pump pool at the lowest position of the high concentration area 401, and the first water outlet pump group 14 is communicated with an inspection well 6 of a current sewage system through a water taking pump room forebay 2 and a water taking pipe 5 in sequence; and a second water outlet pump group 15 is arranged in the low concentration region 402, the second water outlet pump group 15 is positioned in the low concentration region 402 and close to the partition wall, the second water outlet pump is 40-80 cm higher than the bottom of the regulation pond 4, the second water outlet pump is sequentially communicated with an MBBR membrane pool 16 and a high-density sedimentation tank 17 through pipelines, and a water outlet of the high-density sedimentation tank is communicated with a river channel.
In this embodiment, a flushing mechanism for flushing sludge on the bottom plate is arranged corresponding to the bottom plate of the storage pond 4, and the flushing flow direction is parallel to the gradient flow direction of the bottom of the storage pond 4. The flushing mechanism comprises a backwashing pipeline arranged at the bottom of the storage pond, the flushing flow direction is parallel to the gradient flow direction at the bottom of the storage pond, and the backwashing pipeline is connected to a nearby river channel.
In this embodiment, the water quality monitoring device is connected with the PLC controller, the PLC controller obtains the COD and BOD concentration in the water intake pump room forebay 2 through the water quality monitoring device, the PLC controller is connected with the rain gauge and the valves, pumps, level gauges and the like in this embodiment through the circuit, the switches of the valves and pumps are controlled, the liquid level data collected by the level gauge is obtained, and the rain gauge is used for judging whether the rain day or the fine day.
The working principle of the embodiment is as follows:
in sunny days, the water inlet valve 7 is in a normally closed state;
when a large amount of rainwater wraps the surface impurities and enters the mixed flow pipeline at the early stage of rainstorm and enters the current sewage pipe network system under the action of the intercepting pipeline, the PLC controls the opening of the water inlet valve 7 according to the signal of the rain gauge, and sewage enters the water taking pump room forebay 2 through the water taking pipe 5;
when the PLC monitors that the COD and BOD data of the sewage in the front pool 2 of the water taking pump room are set high concentration values through the water quality monitoring device system, the first electric valve 13-1 is opened, and the second electric valve 13-2 is in a normally closed state;
when a liquid level meter in front of the pump monitors that the water level in a front pool 2 of a water taking pump room reaches a pump starting liquid level, a submersible sewage pump 8 is started to convey sewage to a grit chamber 3, and the sewage enters a high-concentration area 401 of a regulation pond 4 through a first pipeline 11 for storage after the sand setting effect;
when the BOD and COD concentrations monitored by the water quality monitoring device system in the water intake pump room forebay 2 reach the set low concentration values, the first electric valve 13-1 of the PLC controller is closed and the second electric valve 13-2 is opened, and the sewage passing through the grit chamber 3 enters the low concentration area 402 of the storage pond 4 through the second pipeline 12;
when the rainy day is changed into a sunny day, a first water outlet pump group 14 in the storage pond 4 is started, and sewage stored in the high-concentration area 401 is pumped into the inspection well 6 of the current sewage pipe network system; after the water in the high concentration area 401 is pumped out, a second water outlet pump group 15 in the low concentration area 402 is started, and supernatant sewage left in the low concentration area 402 is pumped into an MBBR membrane pool 16 and a high-density sedimentation pool 17 and then discharged into a river channel; after the second liquid level meter detects that the liquid level of the pump in the low concentration area 402 reaches the stop level, the second water outlet pump group 15 is closed, the adjusting gate 9 between the high concentration area 401 and the low concentration area 402 is opened, sewage at the bottom of the low concentration area 402 flows into the high concentration area 401 through the communicating port in the partition wall, at the moment, the first water outlet pump in the high concentration area 401 is opened again, and the sewage is conveyed into the inspection well 6 of the current sewage pipe network system.
After the sewage treatment system is operated for a long time, more sludge is possibly generated at the bottom of the storage pond 4, the flushing mechanism is started, water is pumped from the river channel to flush the bottom of the storage pond 4, and the flushed wastewater is conveyed to the sewage pipe network system under the current situation through the first water outlet pump group 14.
In the embodiment, the rain gauge is provided with a trigger switch, and when the rainfall reaches a certain value, the rainfall is judged to be rainy, and the PLC controls the water inlet valve to be opened; when the rainfall drops to the set value of the rain gauge and the weather is judged to be clear, the PLC controller controls the water inlet valve to be recovered to the normally closed state.
In the embodiment, when the water level in the high-concentration area or the low-concentration area in the storage pond 4 rises to the high liquid level limit value, the water taking pump room 1 stops working, the water inlet valve is closed, and water does not enter any more.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a be suitable for regulation system of formula sewage pipe network of damming of confluence system which characterized in that: the system is provided with a water taking pump room, a storage pond, a grit chamber, a sewage treatment facility, a water quality monitoring device and a PLC;
the water intake pump room water inlet is connected with the current sewage pipe network through a water intake pipe and a water inlet valve, the water intake pump room forebay is provided with a water quality monitoring device for acquiring COD and BOD data, and the water outlet pipeline is connected with the inlet of the grit chamber;
the storage pond is divided into a high-concentration area and a low-concentration area by a partition wall, and the bottom of the partition wall is provided with an adjusting gate for communicating the high-concentration area with the low-concentration area;
the grit chamber is provided with a first pipeline connected to the high-concentration area of the storage pond, and the grit chamber is provided with a second pipeline connected to the low-concentration area of the storage pond; a first electric valve is arranged on the first pipeline; the second pipeline is provided with a second electric valve;
the high-concentration area of the storage pond is connected to the front pool of the water taking pump house through a first water outlet pump set, and the low-concentration area of the storage pond is connected to a river channel through a sewage treatment facility through a water outlet of a second water outlet pump set;
the first electric valve, the second electric valve, the water quality monitoring device, the first water outlet pump group, the second water outlet pump group and the adjusting gate are connected with the PLC through circuits.
2. The regulation and storage system of claim 1, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises:
the PLC is used for acquiring data of the water quality monitoring device, and when the COD and BOD concentrations are higher than a set high value, the PLC controls the first electric valve to be opened and the second electric valve to be closed, so that the sewage in the grit chamber enters the high concentration area of the storage pond through the first pipeline; when COD and BOD are lower than a set low value, controlling the first electric valve to close and the second electric valve to open so that the sewage in the grit chamber enters the low concentration area of the storage pond through a second pipeline;
the first water outlet pump group and the second water outlet pump group are controlled to discharge sewage in a high concentration area and a low concentration area respectively in sunny days.
3. The regulation and storage system of claim 1 or 2, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: the water intake pipeline is communicated with an inspection well in a current sewage pipe network, and the elevation of the inlet of the water intake pipeline is slightly higher than the elevation of the bottom of the inspection well by 20 cm.
4. The regulation and storage system of claim 1 or 2, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: and the PLC is connected with a rain gauge for judging rainy days or sunny days.
5. The regulation and storage system of claim 1 or 2, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: the sewage treatment facility is provided with an MBBR membrane tank and a high-density sedimentation tank.
6. The regulation and storage system of claim 1 or 2, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: the bottom of the storage pond has a certain slope, and the slope direction flows from the low concentration area to the high concentration area.
7. The regulation and storage system of claim 6, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: the first water outlet pump group is arranged at the lowest part of the high-concentration area of the storage pond; and the second water outlet pump group is positioned in the low-concentration area of the storage pond and close to the partition wall, and is 40-80 cm higher than the bottom of the storage pond.
8. The system of claim 7, wherein the system is adapted for a combined flow shut-off sewer network, and comprises: the first water outlet pump group is provided with a first liquid level meter, and a second liquid level meter is arranged corresponding to the second water outlet pump group.
9. The regulation and storage system of claim 1 or 2, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: and a back flushing pipeline is arranged at the bottom of the storage pond, and the flushing flow direction is parallel to the gradient flow direction at the bottom of the storage pond.
10. The regulation and storage system of claim 9, wherein the regulation and storage system is adapted to a combined flow shutoff type sewer pipe network, and comprises: the back washing pipeline is connected to a nearby river channel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020582846.1U CN212104425U (en) | 2020-04-19 | 2020-04-19 | Regulation and storage system suitable for combined flow shutoff type sewage pipe network |
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| CN202020582846.1U CN212104425U (en) | 2020-04-19 | 2020-04-19 | Regulation and storage system suitable for combined flow shutoff type sewage pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607017A (en) * | 2022-03-17 | 2022-06-10 | 中电建华东勘测设计研究院(郑州)有限公司 | Overflow sewage treatment structure suitable for combined system and design and operation method thereof |
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2020
- 2020-04-19 CN CN202020582846.1U patent/CN212104425U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607017A (en) * | 2022-03-17 | 2022-06-10 | 中电建华东勘测设计研究院(郑州)有限公司 | Overflow sewage treatment structure suitable for combined system and design and operation method thereof |
| CN114607017B (en) * | 2022-03-17 | 2024-08-20 | 中电建华东勘测设计研究院(郑州)有限公司 | Overflow sewage treatment structure suitable for combined system and design and operation method thereof |
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