CN107620373B - Method for collecting sewage in sewage intercepting pipes of each section into storage facility - Google Patents
Method for collecting sewage in sewage intercepting pipes of each section into storage facility Download PDFInfo
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Abstract
The invention discloses a method for controlling sewage in sewage intercepting pipes of each section in a drainage system to be converged into a storage facility during rainfall, which discharges initial rain with poor water quality and serious pollution in each section to the storage facility through the sewage intercepting pipes by reasonable configuration under the condition of utilizing the existing resources to the maximum extent, and then enters a 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. The method of the invention aims at different pollution degrees of sewage and rainwater which are collected into the storage facility at the same time in different partitioned areas in the system, and reasonably distributes according to the initial rainfall or the initial rainfall time in each partitioned area, so that water bodies from the areas with different pollution degrees are discharged and treated rapidly and effectively in a targeted manner, thereby realizing reasonable discharge of the water bodies.
Description
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 be converged into a storage 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 solution to the above problems has been proposed in the prior art, that is, an urban pipe network system is subdivided according to unit areas by using a fragmentation processing method, but in the process of dividing the urban pipe network system according to unit areas by using a fragmentation processing method, especially for the division of some old urban areas, there is no sewage main pipe in each unit area, and in the face of such a situation, domestic sewage and rainwater can only be discharged through the rainwater main pipe to a remote natural water body. At this time, a sewage intercepting box culvert needs to be laid in the urban pipe network system to temporarily replace the function of a sewage main pipe. 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 the sewage intercepting pipes of each area in a drainage system to be converged into a storage facility during rainfall. The method is suitable for the situation that the total amount of sewage flowing into the storage and regulation facilities in each district is larger than the maximum flow rate which can be circulated by the storage and regulation facilities and/or the maximum capacity which can be processed by a sewage treatment plant at the moment when the 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 a sewage intercepting pipe of each section in a drainage system to be converged into a storage facility during rainfall, wherein the drainage system comprises a plurality of sections divided according to areas, the sewage intercepting pipe of each section and the storage facility; the sewage intercepting pipes of the various areas are connected with a storage and regulation facility, and the tail end of the drainage system (namely the tail end of the storage and regulation facility) is connected with a sewage treatment plant;
A) when the storage facility does not reach the upper accommodation limit, the flow of the sewage intercepting pipes of each section is not controlled, and when the sewage interception of a certain section is finished, the sewage intercepting pipes of the corresponding section are closed; and/or
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 end of the system (namely the end of the storage facility) is Q, Q is the minimum value of Q1 and Q2, wherein Q1 is the maximum flow rate of the sewage treatment plant capable of treating the sewage, and Q2 is the maximum flow rate of the storage facility discharged to the sewage treatment plant;
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each section, and enabling the sum of the flow rates of the sewage interception pipes of each section to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each chip area to be the same;
(b) controlling the flow of the sewage interception pipes 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 sewage interception pipes of the corresponding areas according to the proportion of the flow passage area of the sewage interception pipe of each area;
2) when the sewage interception of a certain section is finished, closing the sewage interception pipe of the corresponding section, and controlling the flow rate of the sewage interception pipes arranged in other sections to enable the sum of the flow rates of the sewage interception pipes of other sections to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of (a), (b) and (c) in the step 1).
According to the invention, the control of the flow rate of the sewage intercepting pipes of the corresponding areas according to the proportion of the flow channel area of the sewage intercepting pipes of the areas is to distribute the flow rate of the sewage intercepting pipes of the corresponding areas according to the proportion of the flow channel area of the sewage intercepting pipes of the areas, and make the sum of the flow rates of the sewage intercepting pipes of the areas equal to Q.
Preferably, the proportion of the flow passage area of each plate sewage intercepting pipe is the same as the proportion of the flow rate distributed by the corresponding plate sewage intercepting pipe.
According to the invention, the control of the flow rate of the sewage intercepting pipes of the corresponding areas according to the proportion of the areas of the catchment areas corresponding to the areas of the areas is to distribute the flow rate of the sewage intercepting pipes of the corresponding areas according to the proportion of the areas of the catchment areas corresponding to the areas of the areas, and enable the sum of the flow rates of the sewage intercepting pipes of the areas to be equal to Q.
Preferably, the proportion of the area of each lamellar region catchment area is the same as the proportion of the flow distributed by the corresponding lamellar region sewage interception pipe.
According to the invention, the storage facilities comprise storage ponds, storage box culverts, sewage intercepting box culverts, deep tunnels or shallow tunnels and the like.
According to the invention, the drainage system further comprises water switches arranged on the sewage intercepting pipes of the respective areas.
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 of the water conservancy switches on the sewage interception pipes of each block according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 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 sewage intercepting pipes of the various sections 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 gates, lower opening gates and the like), weir gates (upper opening weir gates, lower opening weir gates, rotary weir gates and the like) and flap valves (intercepting 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; alternatively, the first and second electrodes may be,
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 catch-off pipes of the individual sectors are connected to a rainwater treatment facility of the sector.
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 of the water conservancy switches on the sewage interception pipes of each block according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 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.
The invention has the beneficial effects that:
(1) the method discharges the initial rain with poor water quality and serious pollution in each sub-area to a regulation and storage facility through a sewage interception pipe by reasonable configuration under the condition of utilizing the existing resources to the maximum extent, and then enters a 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 sewage and rainwater which are collected into the storage facility at the same time in different partitioned areas in the system, and reasonably distributes according to the initial rainfall or the initial rainfall time in each partitioned area, so that water bodies from the areas with different pollution degrees are discharged and treated rapidly and effectively in a targeted manner, thereby realizing reasonable discharge of the water bodies.
(3) 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
A method for controlling sewage in a sewage intercepting pipe of each section in a drainage system to be converged into a storage facility during rainfall, wherein the drainage system comprises a plurality of sections divided according to areas, the sewage intercepting pipe of each section and the storage facility; the sewage intercepting pipes of the various areas are connected with a storage and regulation facility, and the tail end of the drainage system (namely the tail end of the storage and regulation facility) is connected with a sewage treatment plant;
A) when the storage facility does not reach the upper accommodation limit, the flow of the sewage intercepting pipes of each section is not controlled, and when the sewage interception of a certain section is finished, the sewage intercepting pipes of the corresponding section are closed; and/or
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 end of the system (namely the end of the storage facility) is Q, Q is the minimum value of Q1 and Q2, wherein Q1 is the maximum flow rate of the sewage treatment plant capable of treating the sewage, and Q2 is the maximum flow rate of the storage facility discharged to the sewage treatment plant;
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each section, and enabling the sum of the flow rates of the sewage interception pipes of each section to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each chip area to be the same;
(b) controlling the flow of the sewage interception pipes 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 sewage interception pipes of the corresponding areas according to the proportion of the flow passage area of the sewage interception pipe of each area;
2) when the sewage interception of a certain section is finished, closing the sewage interception pipe of the corresponding section, and controlling the flow rate of the sewage interception pipes arranged in other sections to enable the sum of the flow rates of the sewage interception pipes of other sections to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of (a), (b) and (c) in the step 1).
In a preferred embodiment of the invention, the storage facilities comprise storage ponds, storage culvert, sewage intercepting culvert, deep or shallow tunnels and the like.
In a preferred embodiment of the present invention, the controlling of the flow rate of the sewage trap pipe of each corresponding one of the sections in proportion to the flow passage area of the sewage trap pipe of each one of the sections means that the flow rate of the sewage trap pipe of each corresponding one of the sections is distributed in proportion to the flow passage area of the sewage trap pipe of each one of the sections so that the sum of the flow rates of the sewage trap pipes of each one of the sections is equal to Q. Preferably, the proportion of the flow passage area of each plate sewage intercepting pipe is the same as the proportion of the flow rate distributed by the corresponding plate sewage intercepting pipe.
In a preferred embodiment of the present invention, the controlling of the flow rate of the sewage intercepting 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 sewage intercepting pipes of the respective corresponding areas is allocated in proportion to the areas of the catchment areas corresponding to the respective areas so that the sum of the flow rates of the sewage intercepting pipes of the respective areas is equal to Q. Preferably, the proportion of the flow passage area of each plate sewage intercepting pipe is the same as the proportion of the flow rate distributed by the corresponding plate sewage intercepting pipe.
In a preferred embodiment of the present invention, the drainage system further comprises a water switch provided on the sewage intercepting pipe of each of the sections.
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 of the water conservancy switches on the sewage interception pipes of each block according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 sewage intercepting pipe of each partition according to the received time monitoring signals.
In a preferred embodiment of the present invention, the water switches on the sewage intercepting pipes of the respective sections are independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, elevating rubber plate intercepting check valves, etc.), gates (upward opening gates, downward opening gates, etc.), weir gates (upward opening weir gates, downward opening weir gates, rotary weir gates, etc.), flaps (intercepting flaps, etc.).
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 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. The device for monitoring rainfall is a rain gauge which is arranged in the sheet area.
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. The device for monitoring time is a timer which is arranged in the film area.
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; alternatively, the first and second electrodes may be,
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.
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. The sewage intercepting pipes of the various areas are connected with the rainwater treatment facilities of the areas. 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
A method for controlling sewage in a sewage intercepting pipe of each section in a drainage system to be converged into a storage facility during rainfall comprises the steps that a plurality of sections are divided according to regions, the sewage intercepting pipe of each section, a water conservancy switch arranged on the sewage intercepting pipe and the storage facility are arranged; the sewage intercepting pipes of the various areas are connected with a storage and regulation facility, and the tail end of the drainage system (namely the tail end of the storage and regulation facility) is connected with a sewage treatment plant;
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 of the water conservancy switches on the sewage interception pipes of each block according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 a water conservancy switch on the sewage intercepting pipe of each section according to the received time monitoring signal;
A) when the storage facility does not reach the upper accommodation limit, the flow of the sewage intercepting pipes of each section is not controlled, and when the sewage interception of a certain section is finished, the sewage intercepting pipes of the corresponding section are closed; and/or
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 end of the system (namely the end of the storage facility) is Q, Q is the minimum value of Q1 and Q2, wherein Q1 is the maximum flow rate of the sewage treatment plant capable of treating the sewage, and Q2 is the maximum flow rate of the storage facility discharged to the sewage treatment plant;
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each section, and enabling the sum of the flow rates of the sewage interception pipes of each section to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each chip area to be the same; the maximum flow Q actually accepted by the tail end of the system (namely the tail end of the storage facility) is evenly distributed to the sewage interception pipes of each section, so that the flow on the 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 sewage interception pipes of the three areas are Q/3;
(b) controlling the flow of the sewage interception pipes of each corresponding wafer area according to the area proportion of the catchment area corresponding to each wafer area; that is, the maximum flow rate Q actually accepted by the system end (i.e. the end of the storage facility) is distributed to the flow rate of the sewage interception pipe of each corresponding zone according to the proportion of the area of the catchment area corresponding to each zone. For example, the maximum flow rate that can be practically accepted by the end of the system (i.e. the end of the storage facility) is Q, the system comprises three areas, the ratio of the areas of the catchment areas of the three areas is 2:1:3, then the flow rate ratio of the sewage interception pipes of the three areas is 2:1:3, namely the flow rates of the sewage interception pipes of the three areas are 2Q/6, Q/6 and 3Q/6 respectively;
(c) controlling the flow of the sewage interception pipes of the corresponding areas according to the proportion of the flow passage area of the sewage interception pipe of each area; the maximum flow Q actually accepted by the system tail end (namely the tail end of the storage facility) is distributed to the flow of the sewage interception pipes of the corresponding areas according to the proportion of the flow area of the 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 storage facility) is Q, the system comprises three areas, the ratio of the flow passage areas of the sewage interception pipes of the three areas is 4:5:6, and then the flow rate ratio of the sewage interception pipes of the three areas is 4:5:6, namely the flow rates of the sewage interception 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 the sewage interception pipe of the corresponding area, and controlling the flow rate of the sewage interception pipes arranged in other areas to enable the sum of the flow rates of the sewage interception pipes of other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the system (namely the tail end of the storage facility), wherein the control method selects one of (a), (b) and (c) in the step 1);
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 amount L1 needing intercepting, the first area is considered to be completely intercepted, a water switch on an intercepting pipe of the first area is closed, the maximum flow Q actually accepted by the tail end of the system (namely the tail end of the storage facility) is redistributed, and the distribution method is the same as (a), (b) and (c) in the step 1);
after a certain period of time, when the second area reaches a set initial rain and rain amount L1 needing intercepting, the second area is considered to be completely intercepted, a water conservancy switch on an intercepting pipe of the second area is closed, the maximum flow Q actually accepted by the tail end of the system (namely the tail end of the storage facility) is redistributed, and the distribution method is the same as the steps (a), (b) and (c) in the step 1); the above distribution was repeated until all the sections were completely fouled.
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 of the water conservancy switches on the sewage interception pipes of each block according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; 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 sewage intercepting pipe of each partition according to the received time monitoring signals.
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.
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 (11)
1. A method for controlling sewage in sewage intercepting pipes of each section in a drainage system to be converged into a storage facility during rainfall is characterized in that the drainage system comprises a plurality of sections divided according to regions, the sewage intercepting pipes of each section and the storage facility; the sewage intercepting pipes of the areas are connected with a storage and regulation facility, and the tail end of the drainage system is connected with a sewage treatment plant;
A) when the storage facility does not reach the upper accommodation limit, the flow of the sewage intercepting pipes of each section is not controlled, and when the sewage interception of a certain section is finished, the sewage intercepting pipes of the corresponding section are closed;
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 system is Q, Q is the minimum value of Q1 and Q2, wherein Q1 is the maximum flow rate of the sewage treatment plant which can treat the sewage, and Q2 is the maximum flow rate of the storage and regulation facility discharged to the sewage treatment plant;
the control method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each section, and enabling the sum of the flow rates of the sewage interception pipes of each section to be equal to the maximum flow rate Q which can be actually accepted by the tail end of the system, wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each chip area to be the same;
(b) controlling the flow of the sewage interception pipes 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 sewage interception pipes of the corresponding areas according to the proportion of the flow passage area of the sewage interception pipe of each area;
2) when the sewage interception of a certain area is finished, closing the sewage interception pipe of the corresponding area, controlling the flow rate of the sewage interception pipes arranged in other areas, and enabling the sum of the flow rates of the sewage interception pipes of other areas to be equal to the maximum flow rate Q actually accepted by the tail end of the system, wherein the control method selects one of (a), (b) and (c) in the step 1);
the control of the flow rate of the sewage intercepting pipe of each corresponding block according to the proportion of the flow passage area of the sewage intercepting pipe of each block refers to that the flow rate of the sewage intercepting pipe of each corresponding block is distributed according to the proportion of the flow passage area of the sewage intercepting pipe of each block, the sum of the flow rates of the sewage intercepting pipes of each block is equal to Q, and the proportion of the flow passage area of the sewage intercepting pipe of each block is the same as the proportion of the flow rate distributed by the sewage intercepting pipe of each block;
the step of controlling the flow rate of the sewage intercepting pipes of the corresponding wafer areas according to the proportion of the areas of the catchment areas corresponding to the wafer areas is to distribute the flow rate of the sewage intercepting pipes of the corresponding wafer areas according to the proportion of the areas of the catchment areas corresponding to the wafer areas, the sum of the flow rates of the sewage intercepting pipes of the wafer areas is equal to Q, and the proportion of the flow channel areas of the sewage intercepting pipes of the wafer areas is the same as the proportion of the flow rate distributed by the sewage intercepting pipes corresponding to the wafer areas.
2. The method of claim 1, wherein the storage facilities comprise a storage tank, a storage culvert, a catch culvert, a deep tunnel, or a shallow tunnel.
3. The method of claim 1, wherein the drainage system further comprises a water switch disposed on the catch pipe of each slice.
4. A method according to any one of claims 1-3, wherein the drainage system further comprises a control system comprising means for monitoring rainfall and a control unit in signal connection therewith; the control unit is in signal connection with the water conservancy switches on the sewage intercepting pipes of the various areas; the rainfall 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 of the water conservancy switches on the sewage intercepting pipes of each section according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; the device for monitoring time is used for monitoring time, generating a time monitoring signal, transmitting the generated time monitoring signal to the control unit, and controlling the opening degree of the water conservancy switch on the sewage intercepting pipe of each section by the control unit according to the received time monitoring signal.
5. The method of claim 4, wherein the means for monitoring rainfall is selected from the group consisting of a rain gauge; the means for monitoring time is selected from a timer.
6. The method of claim 3, wherein the water switches on the sewage intercepting pipes of the respective sections are each independently selected from one of a ball valve, a gate valve, a butterfly valve, a lifting rubber plate intercepting check valve, an upward opening gate, a downward opening gate, an upward opening weir, a downward opening weir, a rotating weir, and an intercepting flap valve.
7. The method according to any one of claims 1 to 3, wherein the condition of complete sewage interception means that the number of millimeters of initial rain which needs to be collected in the catchment area corresponding to the sheet area reaches the initial rain amount L1 of the catchment area, and the number of millimeters of initial rain which needs to be collected in the catchment area corresponding to the sheet area is 5-20 mm; alternatively, the first and second electrodes may be,
the sewage interception is finished when the time required for all initial rainwater in the corresponding catchment area to flow to the sewage interception pipes of each area reaches the initial rainfall time T1 of the area, and the time required for all initial rainwater in the corresponding catchment area to flow to the sewage interception pipes of each area is 5-40 min.
8. The method according to claim 4, characterized in that the initial rain amount L1 needed to be intercepted by each plate zone is set according to the millimeter number of initial rain to be collected in the catchment area corresponding to each plate zone, and the initial rain amount is set in the control unit of the control system;
the device for monitoring rainfall is a rain gauge which is arranged in the sheet area.
9. The method according to claim 4, wherein the initial rainfall time T1 of each sheet 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 sheet zone to flow to the sewage interception pipe of each sheet zone, and the initial rainfall time is set in the control unit of the control system;
the device for monitoring time is a timer which is arranged in the film area.
10. A method according to any of claims 1-3, wherein said partitioning by area is partitioning by area of 0.04-2 square kilometers;
the area comprises one or more storm water treatment facilities;
the sewage intercepting pipes of all the areas are connected with the rainwater treatment facilities of the areas;
the storm water treatment facility is selected from at least one of a storage facility, an on-line treatment facility, and a diversion well.
11. A control system adapted for use in the method of any one of claims 1-10, the control system comprising means for monitoring rainfall and a control unit in signal connection therewith; the control unit is in signal connection with the water conservancy switches on the sewage intercepting pipes of the various areas; the rainfall 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 of the water conservancy switches on the sewage intercepting pipes of each section according to the received rainfall monitoring signals; alternatively, the first and second electrodes may be,
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 the water conservancy switches on the sewage intercepting pipes of the various areas; the device for monitoring time is used for monitoring time, generating a time monitoring signal, transmitting the generated time monitoring signal to the control unit, and controlling the opening degree of the water conservancy switch on the sewage intercepting pipe of each section by the control unit according to the received time monitoring signal.
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| JP2009108537A (en) * | 2007-10-29 | 2009-05-21 | Sekisui Chem Co Ltd | Rainwater storage facility |
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| CN103343570A (en) * | 2013-07-23 | 2013-10-09 | 北京建筑大学 | Flow combined system regulating storage tank real-time control system and control method thereof |
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