CN107869177A

CN107869177A - A kind of method for controlling the sewage that each section is cut in dirty pipe in drainage system to import trunk sewer and facility of regulating and storing during rainfall

Info

Publication number: CN107869177A
Application number: CN201711042794.8A
Authority: CN
Inventors: 周超
Original assignee: Wuhan Shengyu Drainage Systems Co Ltd
Current assignee: Anhui Zhongke Shengyu Environment Co ltd
Priority date: 2017-10-30
Filing date: 2017-10-30
Publication date: 2018-04-03
Anticipated expiration: 2037-10-30
Also published as: CN107869177B

Abstract

The invention discloses a kind of method for controlling the sewage that each section is cut in dirty pipe in drainage system to import trunk sewer and facility of regulating and storing during rainfall, the method of the invention in the case where utilizing existing resource to greatest extent, pass through reasonable disposition, by water quality in each burst region it is poor, it is with serious pollution just rain be emitted into by first section of dirty pipe of each section in trunk sewer, sewage treatment plant is entered back into be handled, it is emitted into by second section of dirty pipe of each section in facility of regulating and storing, enters back into sewage treatment plant and handled.Sewage can so be reduced as far as possible to the pollution level in burst region, while cleaner rainwater is not discharged into sewage treatment plant, the load of sewage treatment plant is reduced, so that existing resource realizes optimization collocation.Water body in the region of different pollution levels is targetedly fast and effectively carried out emission treatment by the method for the present invention, so as to realize the reasonable discharge of water body.

Description

Method for controlling sewage in sewage intercepting pipes of each area in drainage system to flow into sewage main pipe and storage and regulation facility during rainfall

Technical Field

The invention belongs to the technical field of drainage system regulation and control, and particularly relates to a method for controlling sewage in sewage intercepting pipes of each area in a drainage system to flow into a sewage main pipe and a storage and regulation facility during rainfall.

Background

In the current society, the urbanization is developed more and more rapidly, the area of a city is larger and larger, the structure of a municipal drainage pipe network is more and more complex, and the treatment pressure of a municipal water body treatment system is larger and larger.

Traditional urban pipe network system all adopts a big rainwater processing system to be responsible for a very big catchment area, because catchment area is too big, does not fully consider the delay time of rainwater on pipeline or surface runoff, leads to a large amount of mixings of initial stage rainwater and later stage rainwater. For example, a regulation and storage tank is built in a region close to a municipal sewage treatment system in a city, and assuming that an M region is 1Km away from the regulation and storage tank, municipal rainwater in the M region is directly discharged to the regulation and storage tank through a pipe network, and the time for completely discharging the initial municipal rainwater in the M region to the regulation and storage tank is T1. In the region far from the storage tank beyond the region, assuming that the straight line distance from the N region to the storage tank is 10km, and the time for completely discharging the initial urban rainwater in the N region to the storage tank is T2, the time is obviously far greater than T1 in terms of time length T2. And after the storage tank is full, the excess rainwater begins to be automatically discharged into the natural water body, and the time from the beginning of collecting the rainwater to the beginning of discharging into the natural water body of the storage tank is T3. In actual operation, if only the rainwater discharge condition of the M area is considered, namely the initial rainwater of the M area can enter the sewage treatment system through the storage tank, and the clean rainwater at the later stage can be discharged to the natural water body, T3 is required to be larger than T1, once T3 is exceeded, the storage tank is immediately discharged to the natural water body, and the rainwater flowing to the storage tank in the N area is still the initial rainwater with serious pollution at the moment, namely T3 is smaller than T2, and the discharge to the natural water body undoubtedly causes serious pollution.

If only the rainwater drainage condition of the N area is considered, namely T3 is larger than T2, the initial rainwater of the N area can enter the municipal sewage treatment system through the regulating storage tank and is well treated. However, for the M area, a large amount of later-stage clean rainwater in the M area is also discharged into the municipal sewage treatment plant within the time that the regulation and storage tank discharges the initial rainwater in the N area, and the discharge condition causes great treatment pressure on the municipal sewage system. In addition, when the system is in actual operation, pipe networks in the M area and the N area are generally in a communicated condition, and due to the difference of distances and the detention effect on the way, the initial rainwater in the N area can seriously pollute the clean rainwater in the later period of the M area, and the unreasonable rainwater discharge condition can be caused.

At present, a technical scheme for solving the above problems has been proposed in the prior art, that is, the urban pipe network system is subdivided according to the unit areas by adopting the fragmentation treatment, but in the process of subdividing the urban pipe network system according to the unit areas by adopting the fragmentation treatment, especially for the subdivision of some old urban areas, the sewage main pipes arranged in each unit area cannot meet the discharge requirement of the rainy-day sewage in the unit area, and in the face of such a situation, the sewage main pipes cannot contain the domestic sewage and the rainwater, and the domestic sewage and the rainwater can only be discharged to the remote natural water body through the rainwater main pipes. At this moment, a sewage intercepting box culvert needs to be laid in the urban pipe network system to temporarily replace the effect of the sewage main pipe, and the capacity of the sewage main pipe for accommodating sewage is relieved. However, such pipe network systems are usually suitable for use in sunny days, and when rainwater falls temporarily, the maximum flow of the sewage intercepting box culvert is limited due to the limited treatment capacity of the sewage treatment plant in the pipe network; when heavy rain and heavy rain occur, water bodies in all unit areas cannot be discharged to a sewage treatment plant at the same time in time, and water logging disasters of different degrees in all unit areas are caused.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a method for controlling sewage in each area sewage interception pipe in a drainage system to flow into a sewage main pipe and a storage facility during rainfall. The method is suitable for the situation that the total amount of sewage flowing into the sewage main pipe in each area is larger than the maximum flow which can be circulated by the sewage main pipe and/or the maximum capacity which can be processed by a sewage treatment plant at the moment when rainfall occurs, and can be used for rapidly and effectively discharging and processing the water bodies in the areas with different pollution degrees in a targeted manner.

The purpose of the invention is realized by the following technical scheme:

a method for controlling sewage in sewage intercepting pipes of each section in a drainage system to be converged into a sewage main pipe and a storage and regulation facility during rainfall, wherein the drainage system comprises a plurality of sections divided according to areas, a first sewage intercepting pipe and a second sewage intercepting pipe of each section, the storage and regulation facility and the sewage main pipe; the first sewage intercepting pipe of each zone is connected with a sewage main pipe, the second sewage intercepting pipe of each zone is connected with a storage and regulation facility, and the tail ends of the sewage main pipe and the storage and regulation facility are respectively connected with a sewage treatment plant;

A) when the storage regulation facility does not reach the upper limit of the accommodation, the following control method is adopted:

assuming that the maximum flow rate which can be actually accepted by the tail end of the sewage main pipe is Q, Q is the minimum value of Q1 and Q3, wherein Q1 is the maximum flow rate of the sewage main pipe discharged to the sewage treatment plant, and Q3 is the maximum flow rate of the sewage treatment plant capable of treating sewage;

the method comprises the following steps:

1-1) controlling the flow rate of the first sewage cutting pipe of each section when raining, so that the sum of the flow rates of the first sewage cutting pipes of each section is equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method is one of the following methods:

(a) controlling the flow of the first sewage interception pipes of each wafer area to be the same;

(b) controlling the flow of the first sewage interception pipe of each corresponding wafer area according to the area proportion of the catchment area corresponding to each wafer area;

(c) controlling the flow of the first sewage cutting pipe of each corresponding section according to the proportion of the flow passage area of the first sewage cutting pipe of each section;

1-2) the flow of the second sewage interception pipe of each slice area is not controlled;

2) when the sewage interception of a certain area is finished, closing the first sewage interception pipe and the second sewage interception pipe corresponding to the area, and controlling the flow rate of the first sewage interception pipe arranged in other areas to enable the sum of the flow rates of the first sewage interception pipes in other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method selects one of (a), (b) and (c) in the step 1-1); the flow of the second sewage interception pipe of each chip area is not controlled;

B) when the storage regulation facility reaches the upper limit of the accommodation, the following control method is adopted:

assuming that the maximum flow rate which can be actually accepted by the tail end of the sewage main pipe is Q, Q is the minimum value of Q1 and Q3,

assuming that the maximum flow rate actually accepted by the tail end of the storage facility is Q ', when Q1 is greater than or equal to Q3, Q ' is zero, when Q1 is smaller than Q3, Q ' is the minimum value of Q2 and (Q3-Q1), wherein Q1 is the maximum flow rate of the sewage main pipe discharged to the sewage treatment plant, Q2 is the maximum flow rate of the storage facility discharged to the sewage treatment plant, and Q3 is the maximum flow rate of the sewage treatment plant capable of treating sewage;

the method comprises the following steps:

1-1') controlling the flow rate of the first sewage cutting pipe of each section when raining, so that the sum of the flow rates of the first sewage cutting pipes of each section is equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method selects one of the following methods:

1-2 ') controlling the flow rate of the second sewage interception pipes of each section so that the sum of the flow rates of the second sewage interception pipes of each section is equal to the maximum flow rate Q' actually accepted by the tail end of the storage facility, wherein the control method selects one of the following methods:

(a') controlling the flow rate of the second sewage interception pipes of each chip area to be the same;

(b') controlling the flow rate of the second sewage interception pipe of each corresponding slice area according to the area proportion of the catchment area corresponding to each slice area;

(c') controlling the flow rate of the second sewage intercepting pipe of each corresponding slice area according to the proportion of the flow passage area of the second sewage intercepting pipe of each slice area;

2 ') when the sewage interception of a certain area is finished, closing the first sewage interception pipe and the second sewage interception pipe corresponding to the area, and controlling the flow rates of the first sewage interception pipe and the second sewage interception pipe arranged in other areas to enable the sum of the flow rates of the first sewage interception pipes of other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method selects one of (a), (b) and (c) in the step 1-1'); the sum of the flow rates of the second header pipes of the other sectors is made equal to the maximum flow rate Q ' that can be actually accommodated by the end of the storage facility, and the control method selects one of (a '), (b ') and (c ') in the above-described steps 1-2 ').

According to the present invention, the controlling of the flow rate of the first dirty pipe of each corresponding one of the sections in proportion to the flow passage area of the first dirty pipe of each of the sections means that the flow rate of the first dirty pipe of each corresponding one of the sections is distributed in proportion to the flow passage area of the first dirty pipe of each of the sections, and the sum of the flow rates of the first dirty pipes of each of the sections is equal to Q.

Preferably, the ratio of the flow passage area of the first sewage conduit of each of the areas is the same as the ratio of the flow rate distributed by the first sewage conduit corresponding to each of the areas.

According to the present invention, the control of the flow rate of the second dirty liquid trap of each corresponding one of the sections in proportion to the flow path area of the second dirty liquid trap of each corresponding one of the sections means that the flow rate of the second dirty liquid trap of each corresponding one of the sections is distributed in proportion to the flow path area of the second dirty liquid trap of each corresponding one of the sections so that the sum of the flow rates of the second dirty liquid trap of each section is equal to Q'.

Preferably, the proportion of the flow passage area of the second sewage intercepting pipe of each plate area is the same as the proportion of the flow distributed by the second sewage intercepting pipe of each plate area.

According to the invention, the control of the flow rate of the first sewage pipes of the corresponding areas according to the proportion of the areas of the water collecting areas corresponding to the areas is to distribute the flow rate of the first sewage pipes of the corresponding areas according to the proportion of the areas of the water collecting areas corresponding to the areas, and make the sum of the flow rates of the first sewage pipes of the areas equal to Q.

Preferably, the ratio of the areas of the catchment areas of the respective areas is the same as the ratio of the flow rate distributed by the first sewage interception pipes corresponding to the respective areas.

According to the invention, the control of the flow rate of the second sewage intercepting pipe of each corresponding one of the areas according to the proportion of the area of the catchment area corresponding to each one of the areas means that the flow rate of the second sewage intercepting pipe of each corresponding one of the areas is distributed according to the proportion of the area of the catchment area corresponding to each one of the areas, and the sum of the flow rates of the second sewage intercepting pipes of each one of the areas is equal to Q'.

Preferably, the proportion of the area of the catchment area of each plate area is the same as the proportion of the flow distributed by the second sewage interception pipe corresponding to each plate area.

According to the invention, the drainage system further comprises a water conservancy switch arranged on the first sewage interception pipe of each block and/or a water conservancy switch arranged on the second sewage interception pipe of each block.

According to the invention, the drainage system further comprises a control system, the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

the control system comprises a device for monitoring time and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring time, generating time monitoring signals and transmitting the generated time monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage intercepting pipe of each partition and/or the opening degree of the water conservancy switch on the second sewage intercepting pipe of each partition according to the received time monitoring signals.

According to the invention, the means for monitoring rainfall are selected from the group comprising rain gauges and the like; the means for monitoring time is selected from a timer and the like.

According to the invention, the water conservancy switches on the first sewage interception pipe of each section and the second sewage interception pipe of each section are respectively and independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate intercepting check valves and the like), gates (upper opening type gates, lower opening type gates and the like), weir gates (upper opening type weir gates, lower opening type weir gates, rotary weir gates and the like) and flap valves (flap valves and the like).

According to the invention, the initial rain amount L1 required to be intercepted by each plate area is set according to the millimeter number of the initial rain required to be collected in the catchment area corresponding to each plate area, and the initial rain amount can be set in the control unit of the control system.

According to the invention, the means for monitoring the rainfall is a rain gauge, which is arranged in the patch.

According to the invention, the initial rainfall time T1 of each plate area is set according to the rainfall time of the initial rainwater and the time required by all the initial rainwater in the catchment areas corresponding to each plate area to flow to the sewage interception pipes of each plate area, and the initial rainfall time can be set in the control unit of the control system.

According to the invention, the means for monitoring time is a timer, which is arranged within the tile.

According to the invention, the condition that the sewage interception is finished means that the number of the initial rain millimeters required to be collected in the catchment area corresponding to the area reaches the initial rain amount L1 required to be intercepted by the area, and the number of the initial rain millimeters required to be collected in the catchment area corresponding to the area can be selected according to factors such as weather and regions, and can be 5-20mm for example; or,

the sewage interception is that the time required for all initial rainwater in the corresponding catchment area to flow to each sewage interception pipe in the area reaches the initial rainfall time T1 of the area, and the time required for all initial rainwater in the area to flow to each sewage interception pipe in the area can be selected according to factors such as weather, areas and the like, and can be 5-40min for example.

According to the present invention, the division according to the area is not limited, and may cover a large area, or may cover a small area, for example, the division may be performed according to an area of 0.04 to 2 square kilometers. One or more storm water treatment facilities may be included in the area.

According to the invention, the first sewage conduit of each section is connected to a rainwater treatment facility of the section.

According to the invention, the second catch-off pipes of the individual plots are connected to the rain water treatment facilities of the plot.

According to the invention, the storm water treatment facility is selected from at least one of a storage facility, an on-line treatment facility and a diversion well.

The invention also provides a control system suitable for the method, which comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

The invention has the beneficial effects that:

(1) the method of the invention discharges the initial rain with poor water quality and serious pollution in each sub-area to the sewage main pipe through the first sewage interception pipe of each sub-area by reasonable configuration under the condition of utilizing the existing resources to the maximum extent, and then the initial rain enters the sewage treatment plant for treatment, and is discharged to the regulation and storage facility through the second sewage interception pipe of each sub-area and then enters the sewage treatment plant for treatment. Therefore, the pollution degree of sewage in the splitting area can be reduced as much as possible, clean rainwater is prevented from being discharged into a sewage treatment plant, the load of the sewage treatment plant is reduced, and the optimal configuration of the existing resources is realized.

(2) The method of the invention aims at different pollution degrees of the sewage and the rainwater which are collected into the sewage main pipe and the storage facility at the same time in different partitioned areas in the system, and carries out reasonable distribution according to the initial rainfall or the initial rainfall time in each partitioned area, and carries out rapid and effective discharge treatment on the water bodies from the areas with different pollution degrees in a targeted manner, thereby realizing reasonable discharge of the water bodies.

(3) In the method, when the storage facility reaches the upper accommodation limit, the storage facility can serve as a water passing pipeline, and the water quantity entering the storage facility is consistent with the water quantity flowing out of the storage facility; when the storage facility does not reach the upper limit of the accommodation, the water amount flowing into the second sewage interception pipe does not need to be controlled, and more water is discharged to the storage facility.

(4) The method of the invention is simple and easy to operate.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that various changes or modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the invention.

Example 1

the method comprises the following steps:

In a preferred embodiment of the present invention, the controlling of the flow rate of the first dirty pipe in each corresponding one of the sections in proportion to the flow path area of the first dirty pipe in each corresponding one of the sections means that the flow rate of the first dirty pipe in each corresponding one of the sections is distributed in proportion to the flow path area of the first dirty pipe in each corresponding one of the sections, and the sum of the flow rates of the first dirty pipes in each of the sections is equal to Q.

In a preferred embodiment of the present invention, the controlling of the flow rate of the second dirty liquid trap of each corresponding one of the plurality of sections in proportion to the flow path area of the second dirty liquid trap of each corresponding one of the plurality of sections means that the flow rate of the second dirty liquid trap of each corresponding one of the plurality of sections is distributed in proportion to the flow path area of the second dirty liquid trap of each corresponding one of the plurality of sections, and the sum of the flow rates of the second dirty liquid trap of each corresponding one of the plurality of sections is equal to Q'.

In a preferred embodiment of the present invention, the controlling of the flow rate of the first sewage pipes of the respective corresponding areas in proportion to the areas of the catchment areas corresponding to the respective areas means that the flow rate of the first sewage pipes of the respective corresponding areas is allocated in proportion to the areas of the catchment areas corresponding to the respective areas, and the sum of the flow rates of the first sewage pipes of the respective areas is equal to Q.

In a preferred embodiment of the present invention, the controlling of the flow rate of the second sewage intercepting pipe of each corresponding one of the wafer sections in proportion to the area of the catchment area corresponding to each one of the wafer sections means that the flow rate of the second sewage intercepting pipe of each corresponding one of the wafer sections is distributed in proportion to the area of the catchment area corresponding to each one of the wafer sections so that the sum of the flow rates of the second sewage intercepting pipes of each one of the wafer sections is equal to Q'.

In a preferred embodiment of the invention, the drainage system further comprises a water switch arranged on the first sewage interception pipe of each section and/or a water switch arranged on the second sewage interception pipe of each section.

In a preferred embodiment of the invention, the drainage system further comprises a control system, the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

In a preferred embodiment of the present invention, said means for monitoring rainfall is selected from the group consisting of a rain gauge and the like; the means for monitoring time is selected from a timer and the like.

In a preferred embodiment of the present invention, the water switches on the first sewage intercepting pipe of each section and the second sewage intercepting pipe of each section are independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, elevating rubber plate sewage intercepting check valves, etc.), gates (upper opening gates, lower opening gates, etc.), weir gates (upper opening weir gates, lower opening weir gates, rotary weir gates, etc.), flaps (intercepting flaps, etc.).

In a preferred embodiment of the present invention, the initial rain amount L1 required to cut off the water in each zone is set according to the millimeter number of the initial rain to be collected in the catchment area corresponding to each zone, and the initial rain amount can be set in the control unit of the control system.

In a preferred embodiment of the invention, the means for monitoring rainfall is a rain gauge, which is arranged within the patch.

In a preferred embodiment of the present invention, the initial rainfall time T1 of each segment is set according to the rainfall time of the initial rainwater and the time required for all the initial rainwater in the catchment area corresponding to each segment to flow to the sewage interception pipe of each segment, and the initial rainfall time can be set in the control unit of the control system.

In a preferred embodiment of the invention, the means for monitoring time is a timer, which is arranged within the patch.

In a preferred embodiment of the present invention, the dirt interception is finished, that is, the number of millimeters of initial rain required to be collected in the catchment area corresponding to the segment area reaches the initial rain amount L1 required to be intercepted by the segment area, and the number of millimeters of initial rain required to be collected in the catchment area corresponding to the segment area may be selected according to factors such as weather and area, and may be, for example, 5 to 20 mm; or,

In a preferred embodiment of the present invention, the division according to the area is not limited, and may cover a larger area, or may cover a smaller area, for example, the division may be performed according to an area of 0.04 to 2 square kilometers. One or more storm water treatment facilities may be included in the area.

In a preferred embodiment of the invention, the first sewage conduit of each of said sectors is connected to a rainwater treatment facility of that sector.

In a preferred embodiment of the invention, the second catch-off pipes of each of the sectors are connected to a rainwater treatment facility of that sector.

In a preferred embodiment of the invention, the storm water treatment facility is selected from at least one of a storage facility, an on-line treatment facility and a diversion well.

Example 2

the drainage system also comprises a water conservancy switch arranged on the first sewage intercepting pipe of each block area and/or a water conservancy switch arranged on the second sewage intercepting pipe of each block area; the drainage system also comprises a control system, wherein the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

the control system comprises a device for monitoring time and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring time, generating a time monitoring signal and transmitting the generated time monitoring signal to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each partition and/or the water conservancy switch on the second sewage interception pipe of each partition according to the received time monitoring signal;

the method comprises the following steps:

(a) controlling the flow of the first sewage interception pipes of each wafer area to be the same; the maximum flow Q which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is evenly distributed to the first sewage intercepting pipes of all the areas, so that the flow on the first sewage intercepting pipes of all the areas is the same, and the sum is Q; for example, if a certain area comprises three areas, the flow rates of the first sewage pipes of the three areas are all Q/3;

(b) controlling the flow of the first sewage interception pipe of each corresponding wafer area according to the area proportion of the catchment area corresponding to each wafer area; the maximum flow Q actually accepted by the system tail end (namely the tail end of the sewage main pipe) is distributed to the flow of the first sewage intercepting pipe of each corresponding plate area according to the proportion of the area of the water collecting area corresponding to each plate area. For example, the maximum flow rate that can be actually accepted by the end of the system (i.e. the end of the sewage main pipe) is Q, the system comprises three areas, the ratio of the areas of the catchment areas corresponding to the three areas is 2:1:3, then the flow rate ratio of the first sewage interception pipe of the three areas is 2:1:3, namely the flow rates of the first sewage interception pipe of the three areas are 2Q/6, Q/6 and 3Q/6 respectively;

(c) controlling the flow of the first sewage cutting pipe of each corresponding section according to the proportion of the flow passage area of the first sewage cutting pipe of each section; the maximum flow Q actually accepted by the tail end of the system (namely the tail end of the sewage main pipe) is distributed to the flow of the first sewage cutting pipe of each corresponding section according to the proportion of the flow area of the first sewage cutting pipe of each section; for example, the maximum flow rate that can be actually accepted by the end of the system (i.e. the end of the sewage main pipe) is Q, the system comprises three areas, the ratio of the flow passage areas of the first sewage intercepting pipes of the three areas is 4:5:6, and then the flow rate ratio of the first sewage intercepting pipes of the three areas is 4:5:6, namely the flow rates of the first sewage intercepting pipes of the three areas are 4Q/15, 5Q/15 and 6Q/15 respectively;

2) when the sewage interception of a certain area is finished, closing a water conservancy switch on a first sewage interception pipe and a water conservancy switch on a second sewage interception pipe of the corresponding area, and controlling the flow rates of the first sewage interception pipe and the second sewage interception pipe arranged in other areas to enable the sum of the flow rates of the first sewage interception pipes of other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method selects one of (a), (b) and (c) in the step 1-1); the flow of the second sewage interception pipe of each chip area is not controlled;

for example, the system comprises three areas, namely a first area, a second area and a third area, when the first area reaches a set initial rain and rain amount L1 needing intercepting, the first area is considered to be completely intercepted, a water switch on a first intercepting pipe and a water switch on a second intercepting pipe of the first area are closed, the maximum flow Q actually accepted by the tail end of the system (namely the tail end of a sewage main pipe) is redistributed, and the distribution method is the same as that of (a), (b) and (c) in the step 1-1);

after a certain period of time, when the second area reaches the set initial rain and rain amount L1 which needs to cut off, the second area is considered to cut off the sewage completely, a water conservancy switch on a first sewage cutting pipe and a water conservancy switch on a second sewage cutting pipe of the second area are closed, the maximum flow Q which can be actually accepted by the tail end of the system (namely the tail end of the sewage main pipe) is redistributed, and the distribution method is the same as the steps (a), (b) and (c) in the step 1-1); repeating the distribution until all the areas are completely cut off;

the method comprises the following steps:

(a') controlling the flow rate of the second sewage interception pipes of each chip area to be the same; the maximum flow Q which can be actually accepted by the tail end of the system (namely the tail end of the sewage main pipe) is evenly distributed to the second sewage interception pipes of each section, so that the flow on the second sewage interception pipes of each section is the same, and the sum is Q; for example, if a certain area comprises three areas, the flow rates of the second sewage interception pipes of the three areas are all Q/3;

(b') controlling the flow rate of the second sewage interception pipe of each corresponding slice area according to the area proportion of the catchment area corresponding to each slice area; namely, the maximum flow Q which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is distributed to the flow of the second sewage interception pipe of each corresponding plate area according to the proportion of the area of the catchment area corresponding to each plate area. For example, the maximum flow rate that can be actually accepted by the end of the system (i.e. the end of the sewage main pipe) is Q, the system comprises three areas, the ratio of the areas of the catchment areas corresponding to the three areas is 2:1:3, then the flow rate ratio of the second sewage interception pipe of the three areas is 2:1:3, namely the flow rates of the second sewage interception pipes of the three areas are 2Q/6, Q/6 and 3Q/6 respectively;

(c') controlling the flow rate of the second sewage intercepting pipe of each corresponding slice area according to the proportion of the flow passage area of the second sewage intercepting pipe of each slice area; the maximum flow Q which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is distributed to the flow of the second sewage interception pipes of the corresponding areas according to the proportion of the flow passage areas of the second sewage interception pipes of the areas; for example, the maximum flow rate that can be actually accepted by the end of the system (i.e. the end of the sewage main pipe) is Q, the system comprises three areas, the ratio of the flow area of the second sewage interception pipe of the three areas is 4:5:6, then the flow rate ratio of the second sewage interception pipe of the three areas is 4:5:6, namely the flow rates of the second sewage interception pipes of the three areas are 4Q/15, 5Q/15 and 6Q/15 respectively;

Example 3

The present embodiment provides a control system suitable for the method according to embodiment 1 or embodiment 2, the control system comprising a device for monitoring rainfall and a control unit in signal connection therewith; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling sewage in sewage intercepting pipes of each section in a drainage system to be converged into a sewage main pipe and a storage and regulation facility during rainfall, wherein the drainage system comprises a plurality of sections divided according to areas, a first sewage intercepting pipe and a second sewage intercepting pipe of each section, the storage and regulation facility and the sewage main pipe; the first sewage intercepting pipe of each zone is connected with a sewage main pipe, the second sewage intercepting pipe of each zone is connected with a storage and regulation facility, and the tail ends of the sewage main pipe and the storage and regulation facility are respectively connected with a sewage treatment plant;

the method comprises the following steps:

2) when the sewage interception of a certain area is finished, closing the first sewage interception pipe and the second sewage interception pipe corresponding to the area, and controlling the flow rate of the first sewage interception pipe arranged in other areas to enable the sum of the flow rates of the first sewage interception pipes in other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the sewage main pipe, wherein the control method selects one of (a), (b) and (c) in the step 1-1); the flow of the second sewage interception pipes of other areas is not controlled;

the method comprises the following steps:

2. The method according to claim 1, wherein the controlling of the flow rate of the first waste pipe of each corresponding one of the sections in proportion to the flow passage area of the first waste pipe of each one of the sections means that the flow rate of the first waste pipe of each corresponding one of the sections is distributed in proportion to the flow passage area of the first waste pipe of each one of the sections, and the sum of the flow rates of the first waste pipes of each one of the sections is made equal to Q.

Preferably, the controlling of the flow rate of the second dirty liquid trap of each corresponding one of the plurality of sections in proportion to the flow area of the second dirty liquid trap of each corresponding one of the plurality of sections is to allocate the flow rate of the second dirty liquid trap of each corresponding one of the plurality of sections in proportion to the flow area of the second dirty liquid trap of each corresponding one of the plurality of sections, and to make the sum of the flow rates of the second dirty liquid trap of each corresponding one of the plurality of sections equal to Q'.

3. The method according to claim 1 or 2, wherein the controlling of the flow rate of the first sewage conduit of each corresponding one of the sections in proportion to the area of the water-collecting area corresponding to each one of the sections means that the flow rate of the first sewage conduit of each corresponding one of the sections is allocated in proportion to the area of the water-collecting area corresponding to each one of the sections, and the sum of the flow rates of the first sewage conduits of each one of the sections is equal to Q.

Preferably, the controlling the flow rate of the second sewage intercepting pipe of each corresponding one of the areas according to the ratio of the areas of the catchment areas corresponding to the respective one of the areas means that the flow rate of the second sewage intercepting pipe of each corresponding one of the areas is distributed according to the ratio of the areas of the catchment areas corresponding to the respective one of the areas, and the sum of the flow rates of the second sewage intercepting pipes of the respective one of the areas is equal to Q'.

4. A method according to any one of claims 1 to 3, wherein the drainage system further comprises a water switch provided on the first soil trap of each plot and/or a water switch provided on the second soil trap of each plot.

Preferably, the drainage system further comprises a control system, wherein the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

5. The method according to any one of claims 1-4, wherein the means for monitoring rainfall is selected from the group consisting of a rain gauge, and the like; the means for monitoring time is selected from a timer and the like.

6. The method according to any one of claims 1 to 5, wherein the water switches on the first sewage intercepting pipe of each section and the second sewage intercepting pipe of each section are each independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, elevating rubber sheet intercepting check valves, etc.), gates (up-opening gates, down-opening gates, etc.), weir gates (up-opening weirs, down-opening weirs, rotating weir gates, etc.), flaps (intercepting flaps, etc.).

7. The method according to any one of claims 1 to 6, wherein the completion of the sewage interception means that the number of millimeters of initial rain to be collected in the catchment area corresponding to the area reaches the initial rain amount L1 required to be intercepted by the area, and the number of millimeters of initial rain to be collected in the catchment area corresponding to the area can be selected according to factors such as weather and region, and can be 5 to 20mm, for example; or,

8. A method according to any one of claims 1-7, characterized in that the initial rain amount L1 to be cut off for each segment is set according to the millimeter number of initial rain to be collected in the catchment area corresponding to each segment, said initial rain amount being settable in the control unit of the control system.

Preferably, the means for monitoring rainfall is a rain gauge, which is arranged within the patch.

Preferably, the initial rainfall time T1 of each zone is set according to the rainfall time of the initial rainwater and the time required for all the initial rainwater in the catchment area corresponding to each zone to flow to the sewage interception pipe of each zone, and the initial rainfall time can be set in the control unit of the control system.

Preferably, the means for monitoring time is a timer, which is located within the tile.

9. The method according to any of claims 1-8, wherein said partitioning by area is partitioning by area of 0.04-2 square kilometers.

Preferably, one or more storm water treatment facilities may be included in the area.

Preferably, the first catch-off pipe of each of the said plots is connected to a rainwater treatment facility of that plot.

Preferably, the second catch-off pipes of each of the sections are connected to the rainwater treatment facilities of that section.

Preferably, the storm water treatment facility is selected from at least one of a storage facility, an on-line treatment facility and a diversion well.

10. A control system adapted for use in the method of any one of claims 1-9, the control system comprising means for monitoring rainfall and a control unit in signal connection therewith; the control unit is in signal connection with a water conservancy switch on the first sewage interception pipe of each block and/or a water conservancy switch on the second sewage interception pipe of each block; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switch on the first sewage interception pipe of each section and/or the water conservancy switch on the second sewage interception pipe of each section according to the received rainfall monitoring signals; or,

Preferably, the means for monitoring rainfall is selected from a rain gauge or the like; the means for monitoring time is selected from a timer and the like.