CN107675771A - A kind of method for controlling the sewage in drainage system in each section rainwater pipeline and plumbing drain to import facility of regulating and storing during rainfall - Google Patents
A kind of method for controlling the sewage in drainage system in each section rainwater pipeline and plumbing drain to import facility of regulating and storing during rainfall Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 245
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000001276 controlling effect Effects 0.000 title abstract description 25
- 230000001105 regulatory effect Effects 0.000 title abstract description 6
- 238000009428 plumbing Methods 0.000 title abstract 4
- 230000008676 import Effects 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims description 88
- 238000012806 monitoring device Methods 0.000 claims description 14
- 230000004308 accommodation Effects 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000005457 optimization Methods 0.000 abstract 1
- 239000008239 natural water Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000003028 elevating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/20—Measuring flow in sewer systems
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Abstract
The invention discloses a kind of method for controlling the sewage in drainage system in each section rainwater pipeline and plumbing drain to import facility of regulating and storing during rainfall, methods described in the case where utilizing existing resource to greatest extent, pass through reasonable disposition, by water quality in each burst region is poor, with serious pollution just rain is emitted into facility of regulating and storing by section dirty pipe being connected with rainwater pipeline, sewage discharge in the sewage pipe being connected with plumbing drain simultaneously enters back into sewage treatment plant and handled into facility of regulating and storing.The sewage come from by reasonably distributing in the sewage pipe being connected with plumbing drain and the sewage cut in dirty pipe being connected with rainwater pipeline enter the amount for facility of regulating and storing, sewage is reduced as far as possible to the pollution level in burst region, cleaner rainwater is also set to be not discharged into sewage treatment plant simultaneously, the load of sewage treatment plant is reduced, so that existing resource realizes optimization collocation.
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 rainwater pipelines and sewage pipelines of each district 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. And the flow that the domestic sewage that must discharge in the sewage pipeline of sewage treatment plant can discharge sewage treatment plant must be restricted, if the waterlogging phenomenon takes place, then the pollution in the area is improved greatly.
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 regulation and storage facility in each unit area, and in the face of such a situation, domestic sewage and rainwater can only be discharged to a remote natural water body through a rainwater trunk pipe. At this moment, a sewage intercepting box culvert needs to be paved in the urban pipe network system to temporarily replace the function of a storage and regulation facility. 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 a rainwater pipeline and a sewage pipeline of each district 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 rainwater pipelines and sewage pipelines of each district in a drainage system to converge into a regulation and storage facility during rainfall, wherein the drainage system comprises a plurality of districts divided according to regions, the rainwater pipelines and the sewage pipelines of each district, a sewage interception pipe connected with the rainwater pipelines, the sewage pipes connected with the sewage pipelines and the regulation and storage facility; the sewage interception pipe and the sewage pipe are respectively 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 of rainwater which can be actually received by the system end (namely the storage facility end) is Q, Q is the minimum value of (Q1-Q3) and (Q2-Q3), wherein Q1 is the maximum flow rate of sewage which can be treated by a sewage treatment plant, Q2 is the maximum flow rate of the discharged rainwater of the storage facility to the sewage treatment plant, and Q3 is the flow rate of a sewage pipe;
the method comprises the following steps:
1) when rainfall, controlling the flow rate of the sewage interception pipes of each block area to enable the flow rate at the tail end of the storage facility to be equal to Q, 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) and (3) when the sewage interception of a certain section is finished, closing the sewage interception pipe corresponding to the section, and controlling the flow rate of the sewage interception pipes arranged in other sections to enable the flow rate at the tail end of the storage facility to be equal to Q, 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 ratio of the area of the water collecting area corresponding to each plate area is the same as the ratio of the flow distributed by the sewage intercepting pipe corresponding to each plate area.
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; 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 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; 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 catch basins of the individual sectors are connected to the rainwater pipeline by rainwater treatment facilities associated with the sectors.
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; 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 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 of the invention discharges the initial rain with poor water quality and serious pollution in each segment area to a regulation and storage facility through a sewage interception pipe connected with a rainwater pipeline by reasonable configuration under the condition of utilizing the existing resources to the maximum extent, and simultaneously discharges the sewage in a sewage pipe connected with the sewage pipeline to the regulation and storage facility and then enters a sewage treatment plant for treatment. The sewage in the sewage pipe connected with the sewage pipeline and the sewage in the sewage intercepting pipe connected with the rainwater pipeline are reasonably distributed to enter the regulation and storage facility, so that the pollution degree of the sewage in the partition area is 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 allocation of the existing resources is realized.
(2) The method of the invention aims at the problem that the pollution degree of the sewage (especially the domestic sewage in the sewage pipe connected with the sewage pipeline and the initial rainwater in the sewage interception pipe connected with the rainwater pipeline) which is imported into the regulation and storage facility at the same time in different partitioned areas in the system is different from the pollution degree of the rainwater, and the method can carry out reasonable distribution according to the initial rainfall or the initial rainfall time in each partitioned area, and can discharge and treat the water bodies in the areas with different pollution degrees rapidly and effectively in a targeted manner, thereby realizing the 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 rainwater pipelines and sewage pipelines of each district in a drainage system to converge into a regulation and storage facility during rainfall, wherein the drainage system comprises a plurality of districts divided according to regions, the rainwater pipelines and the sewage pipelines of each district, a sewage interception pipe connected with the rainwater pipelines, the sewage pipes connected with the sewage pipelines and the regulation and storage facility; the sewage interception pipe and the sewage pipe are respectively 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 of rainwater which can be actually received by the end of the system (namely the end of the storage facility) is Q, Q is the minimum value of (Q1-Q3) and (Q2-Q3), wherein Q1 is the maximum flow rate of sewage which can be treated by the sewage treatment plant, Q2 is the maximum flow rate of a sewage interception pipe connected with the sewage treatment plant by the storage facility, and Q3 is the flow rate of the sewage pipe;
the method comprises the following steps:
1) when rainfall, controlling the flow rate of the sewage interception pipes of each block area to enable the flow rate at the tail end of the storage facility to be equal to Q, 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) and (3) when the sewage interception of a certain section is finished, closing the sewage interception pipe corresponding to the section, and controlling the flow rate of the sewage interception pipes arranged in other sections to enable the flow rate at the tail end of the storage facility to be equal to Q, wherein the control method selects one of (a), (b) and (c) in the step 1).
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 ratio of the area of the water collecting area corresponding to each plate area is the same as the ratio of the flow distributed by the sewage intercepting pipe corresponding to each plate area.
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 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; 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 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.
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, 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,
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.
In a preferred embodiment of the invention, the catch basins of the individual sectors are connected to the rainwater pipeline by rainwater treatment facilities associated with the sectors.
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
A method for controlling sewage in rainwater pipelines and sewage pipelines of each district in a drainage system to converge into a regulation and storage facility during rainfall, wherein the drainage system comprises a plurality of districts divided according to regions, the rainwater pipelines and the sewage pipelines of each district, a sewage interception pipe connected with the rainwater pipelines, the sewage pipes connected with the sewage pipelines and the regulation and storage facility; the sewage interception pipe and the sewage pipe are respectively 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 water conservancy switches arranged on the sewage intercepting pipes of the respective areas;
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; 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 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 interception of the corresponding section is 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 of rainwater which can be actually received by the system end (namely the storage facility end) is Q, Q is the minimum value of (Q1-Q3) and (Q2-Q3), wherein Q1 is the maximum flow rate of sewage which can be treated by a sewage treatment plant, Q2 is the maximum flow rate of the discharged rainwater of the storage facility to the sewage treatment plant, and Q3 is the flow rate of a sewage pipe;
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 of rainwater 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 of rainwater actually accepted by the tail end of the system (namely the tail end of the storage facility) is averagely 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; namely, the maximum flow Q of rainwater actually accepted by the system tail end (namely the regulation facility tail end) distributes the flow of the sewage interception pipes of the corresponding areas according to the proportion of the areas of the catchment areas corresponding to the areas. For example, the maximum flow rate of rainwater that can be actually received 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, and 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 of rainwater which can be actually received by the tail end of the system (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 passage areas of the sewage interception pipes of the areas; for example, the maximum flow rate of rainwater that can be actually received 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 of rainwater which can be actually received by the tail end of a system (namely the tail end of a regulation and 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 of rain water 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 that of (a), (b) and (c) in the step 1);
and (3) after a certain period of time, when the second area reaches a set initial rain amount L1 needing intercepting, the second area is considered to be completely intercepted, a water switch on an intercepting pipe of the second area is closed, the maximum flow Q of the rainwater 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).
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; 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 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 (10)
1. A method for controlling sewage in rainwater pipelines and sewage pipelines of each district in a drainage system to converge into a regulation and storage facility during rainfall, wherein the drainage system comprises a plurality of districts divided according to regions, the rainwater pipelines and the sewage pipelines of each district, a sewage interception pipe connected with the rainwater pipelines, the sewage pipes connected with the sewage pipelines and the regulation and storage facility; the sewage interception pipe and the sewage pipe are respectively 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 of rainwater which can be actually received by the system end (namely the storage facility end) is Q, Q is the minimum value of (Q1-Q3) and (Q2-Q3), wherein Q1 is the maximum flow rate of sewage which can be treated by a sewage treatment plant, Q2 is the maximum flow rate of the discharged rainwater of the storage facility to the sewage treatment plant, and Q3 is the flow rate of a sewage pipe;
the method comprises the following steps:
1) when rainfall, controlling the flow rate of the sewage interception pipes of each block area to enable the flow rate at the tail end of the storage facility to be equal to Q, 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) and (3) when the sewage interception of a certain section is finished, closing the sewage interception pipe corresponding to the section, and controlling the flow rate of the sewage interception pipes arranged in other sections to enable the flow rate at the tail end of the storage facility to be equal to Q, wherein the control method selects one of (a), (b) and (c) in the step 1).
2. The method according to claim 1, wherein the controlling of the flow rate of the sewage intercepting pipes of the corresponding respective sections in proportion to the flow passage area of the sewage intercepting pipes of the respective sections means that the flow rate of the sewage intercepting pipes of the corresponding respective sections is allocated in proportion to the flow passage area of the sewage intercepting pipes of the respective sections, and the sum of the flow rates of the sewage intercepting pipes of the respective sections is made 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.
3. The method according to claim 1 or 2, wherein the controlling of the flow rate of the sewage intercepting pipes of the corresponding areas according to the proportion of the area of the catchment area corresponding to each area means that the flow rate of the sewage intercepting pipes of the corresponding areas is distributed according to the proportion of the area of the catchment area corresponding to each area, and the sum of the flow rates of the sewage intercepting pipes of the areas is equal to Q.
Preferably, the ratio of the area of the water collecting area corresponding to each plate area is the same as the ratio of the flow distributed by the sewage intercepting pipe corresponding to each plate area.
4. A method according to any of claims 1-3, characterized in that the storage facilities comprise storage ponds, storage culvert, sewage intercepting culvert, deep or shallow tunnels or the like.
5. The method of any one of claims 1 to 4, wherein the drainage system further comprises a water switch disposed on the catch pipe of each panel.
6. The method according to any one of claims 1-5, 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 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; 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 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.
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.
Preferably, the water conservancy switch on the sewage intercepting pipe of each section is independently selected from one of a valve (a ball valve, a gate valve, a knife gate valve, a butterfly valve, a lifting rubber plate intercepting check valve and the like), a gate (an upper opening type gate, a lower opening type gate and the like), a weir gate (an upper opening type weir gate, a lower opening type weir gate, a rotary weir gate and the like) and a flap valve (an intercepting flap valve and the like).
7. A method according to any one of claims 1-6, 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.
8. The method according to any one of claims 1 to 7, wherein the initial rainfall time T1 of each segment is set according to the rainfall time of the initial rainwater and the time required for the initial rainwater in the corresponding catchment area of each segment to flow all the way to the sewage interception pipe of each segment, 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 one of claims 1 to 8, 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,
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.
Preferably, the division according to regions may be performed in an area of 0.04-2 square kilometers. One or more storm water treatment facilities may be included in the area.
Preferably, the catch-off pipes of each of the sectors are connected to the rainwater pipeline by rainwater treatment facilities associated with that sector.
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 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; 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 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.
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.
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