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 drainage system to flow into a sewage main pipe during rainfall. The method is suitable for the situation that the total amount of sewage flowing into the sewage main pipe is larger than the maximum flow which can be circulated by the sewage main pipe and/or the maximum capacity which can be processed by a sewage treatment plant at the moment when rainfall occurs, and can be used for rapidly and effectively discharging and processing the water bodies in the areas with different pollution degrees in a targeted manner.
The purpose of the invention is realized by the following technical scheme:
a method for controlling sewage in a drainage system to be gathered into a sewage main pipe during rainfall, wherein the drainage system comprises a plurality of rain sewage treatment units and sewage main pipes which are divided according to areas; the rain and sewage treatment unit comprises a rain pipeline, a sewage pipe connected with the sewage pipeline and a flow dividing facility connected with the rain pipeline; the flow dividing facilities comprise sewage intercepting pipes and water outlet pipes, the sewage intercepting pipes in each flow dividing facility are connected with the sewage main pipe, and the water outlet pipes in each flow dividing facility are connected with the natural water body or the pipeline leading to the natural water body; the sewage pipe is connected with the sewage main pipe; the tail end of the drainage system (namely the tail end of the sewage main pipe) is connected with a sewage treatment plant;
assuming that the maximum flow rate of rainwater which can be actually received by the system end (namely the end of the sewage main pipe) 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 processed by a sewage treatment plant, Q2 is the maximum flow rate of the sewage main pipe, and Q3 is the flow rate of the sewage pipe;
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each shunting facility to enable the sum of the flow rates of the sewage interception pipes of each shunting facility to be equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each shunting facility to be the same;
(b) controlling the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the area of the catchment area corresponding to each shunting facility;
(c) controlling the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the flow passage area of the sewage interception pipe of each shunting facility;
2) when the sewage interception of a certain flow distribution facility is finished, closing the sewage interception pipe of the corresponding flow distribution facility, opening the water outlet pipe of the corresponding flow distribution facility, and controlling the flow rate of the sewage interception pipes arranged in other flow distribution facilities, so that the sum of the flow rates of the sewage interception pipes of other flow distribution facilities is equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe).
According to the invention, the method further comprises the steps of:
3) when the water level in a certain shunting facility is higher than the warning water level, the water outlet pipe corresponding to the shunting facility is opened, and the water body is directly discharged to the natural water body or a pipeline connected with the natural water body through the water outlet pipe.
According to the invention, the tail end of the sewage main pipe is connected with a sewage treatment plant through a regulation and storage system, when the regulation and storage system is opened, the maximum flow Q of rainwater which can be actually received by the tail end of the sewage main pipe is (Q2-Q3); when the storage system is off, Q is the minimum of (Q1-Q3) and (Q2-Q3).
According to the present invention, the control of the flow rate of the sewage intercepting pipe of each corresponding diversion facility in proportion to the flow passage area of the sewage intercepting pipe of each diversion facility means that the flow rate of the sewage intercepting pipe of each corresponding diversion facility is distributed in proportion to the flow passage area of the sewage intercepting pipe of each diversion facility, and the sum of the flow rates of the sewage intercepting pipes of each diversion facility is equal to Q.
Preferably, the flow passage area ratio of the sewage intercepting pipes of each shunting facility is the same as the flow rate ratio distributed by the sewage intercepting pipes of each shunting facility.
According to the invention, the control of the flow rate of the sewage interception pipes of the corresponding diversion facilities according to the proportion of the area of the catchment area corresponding to each diversion facility means that the flow rate of the sewage interception pipes of the corresponding diversion facilities is distributed according to the proportion of the area of the catchment area corresponding to each diversion facility, and the sum of the flow rates of the sewage interception pipes of the diversion facilities is equal to Q.
Preferably, the ratio of the area of the catchment area corresponding to each diversion facility is the same as the ratio of the flow rate distributed by the sewage interception pipe of each corresponding diversion facility.
According to the invention, the sewage mains comprises one or more storage systems along the line, which may be connected in series or in parallel. The storage regulation facility comprises a storage regulation pool, a storage regulation box culvert, a deep tunnel or a shallow tunnel and the like.
According to the invention, the drainage system further comprises a water conservancy switch arranged on the sewage intercepting pipe of each diversion facility and/or a water conservancy switch arranged on the water outlet pipe of each diversion facility.
According to the invention, the drainage system further comprises a control system, the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities 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 connected with the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities through signals; 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 a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received time monitoring signal; alternatively, the first and second electrodes may be,
the control system comprises a device for monitoring the liquid level of the water 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 shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities; monitoring devices is used for monitoring the aqueous humor liquid level, generates aqueous humor liquid level monitoring signal, and the aqueous humor liquid level monitoring signal who will generate is given the control unit, and the control unit is according to the aperture of the water conservancy switch on the sewage intercepting pipe of each reposition of redundant personnel facility of the aqueous humor liquid level monitoring signal control and/or the water conservancy switch on the outlet pipe of each reposition of redundant personnel facility of receiving.
According to the invention, the means for monitoring rainfall are selected from the group comprising rain gauges and the like; the device for monitoring time is selected from a timer and the like; the device for monitoring the liquid level of the water is selected from a liquid level sensor, a liquid level meter, a liquid level switch and the like.
According to the invention, the water conservancy switch on the sewage intercepting pipe of each shunting facility and the water conservancy switch on the water outlet pipe of each shunting facility are respectively and independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate intercepting check valves and the like), gates (upper opening type gates, lower opening type gates and the like), weir gates (upper opening type weir gates, lower opening type weir gates, rotary weir gates and the like) and flap valves (intercepting flap valves and the like).
According to the invention, the initial rain amount L1 required to be intercepted by each diversion facility is set according to the millimeter number of the initial rain required to be collected in the catchment area corresponding to each diversion facility, and the initial rain amount can be set in the control unit of the control system.
According to the invention, the device for monitoring rainfall is a rain gauge, which is arranged in the diversion facility.
According to the invention, the initial rainfall time T1 of each diversion facility is set according to the rainfall time of the initial rainwater and the time required by all the initial rainwater in the catchment area corresponding to each diversion facility to flow to the sewage interception pipe of each diversion facility, 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 in the shunting facility.
According to the invention, the sewage interception is finished, namely the number of the initial rain millimeters required to be collected in the catchment area corresponding to the diversion facility reaches the initial rain amount L1 required to be intercepted by the diversion facility, and the number of the initial rain millimeters required to be collected in the catchment area corresponding to the diversion facility 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 the sewage interception pipe of each diversion facility reaches the initial rainfall time T1 of the diversion facility, and the time required for all initial rainwater in the corresponding catchment area of the diversion facility to flow to the sewage interception pipe of each diversion facility can be selected according to factors such as weather, regions 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.
According to the invention, the diversion facility is selected from one or two combinations of a storage facility, a diversion well, a cut-off well and a abandonment well.
According to the invention, the warning water level of each shunting facility is set according to the height of the lowest point of the terrain in the catchment area corresponding to each shunting facility when water accumulation risks occur.
According to the invention, the rain and sewage treatment unit further comprises an online treatment facility.
According to the invention, the water outlet pipe in each diversion facility is connected with the natural water body through the on-line treatment facility.
According to the invention, the water outlet pipe in each diversion facility is connected with the natural water body through the storage facility.
According to the invention, the water outlet pipe in each flow distribution facility is connected with the natural water body through the storage facility and the on-line treatment facility.
According to the invention, the storage facility may be a plurality of storage facilities connected in series or in parallel; the storage regulation facility comprises a storage regulation pool, a storage regulation box culvert, a deep tunnel or a shallow tunnel and the like.
According to the invention, the on-line processing facility may be a plurality of on-line processing facilities connected in series or in parallel; the on-line treatment facilities comprise a biological filter, an on-line treatment tank, a flocculation tank, an inclined plate sedimentation tank, a grit chamber or an artificial wetland and the like.
The invention also provides a control system suitable for the method, which comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities 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 connected with the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities through signals; 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 a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received time monitoring signal; alternatively, the first and second electrodes may be,
the control system comprises a device for monitoring the liquid level of the water 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 shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities; monitoring devices is used for monitoring the aqueous humor liquid level, generates aqueous humor liquid level monitoring signal, and the aqueous humor liquid level monitoring signal who will generate is given the control unit, and the control unit is according to the aperture of the water conservancy switch on the sewage intercepting pipe of each reposition of redundant personnel facility of the aqueous humor liquid level monitoring signal control and/or the water conservancy switch on the outlet pipe of each reposition of redundant personnel facility of receiving.
According to the invention, the means for monitoring rainfall are selected from the group comprising rain gauges and the like; the device for monitoring time is selected from a timer and the like; the device for monitoring the liquid level of the water body comprises a liquid level sensor, a liquid level meter, a liquid level switch and the like.
The invention has the beneficial effects that:
(1) according to the method, under the condition that the existing resources are utilized to the maximum extent, through reasonable configuration, initial rain which is poor in water quality and serious in pollution in each rain and sewage treatment unit is discharged into a sewage main pipe through a sewage intercepting pipe of a shunting facility and then enters a sewage treatment plant for treatment, middle and later stage rain which is good in water quality and small in pollution is discharged into a natural water body or a pipeline of the natural water body through a water outlet pipe of the shunting facility, and meanwhile, sewage in a sewage pipe connected with a sewage pipeline is discharged into the sewage main pipe and then enters the sewage treatment plant for treatment. Through the reasonable distribution from the sewage in the sewage pipe that links to each other with the sewage pipeline and the volume that sewage in the sewage pipe that cuts of reposition of redundant personnel facility got into the sewage main line, can reduce sewage to the pollution degree in each rain sewage treatment unit as far as possible, also make cleaner rainwater discharge into natural water simultaneously, avoid the two to mix and cause the load aggravation of sewage treatment plant when rainy day to make current resource realize the optimal configuration.
(2) The method of the invention aims at different pollution degrees of the sewage (especially domestic sewage in a sewage pipe connected with the sewage pipeline and initial rainwater in a sewage interception pipe connected with a rainwater pipeline) which is converged into a sewage main pipe at the same time by different pipelines in the system and the rainwater, reasonably distributes according to the initial rainfall or the initial rainfall time in each diversion facility, and rapidly and effectively discharges and treats the water bodies in the areas with different pollution degrees 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 drainage system to be gathered into a sewage main pipe during rainfall, wherein the drainage system comprises a plurality of rain sewage treatment units and sewage main pipes which are divided according to areas; the rain and sewage treatment unit comprises a rain pipeline, a sewage pipe connected with the sewage pipeline and a flow dividing facility connected with the rain pipeline; the flow dividing facilities comprise sewage intercepting pipes and water outlet pipes, the sewage intercepting pipes in each flow dividing facility are connected with the sewage main pipe, and the water outlet pipes in each flow dividing facility are connected with the natural water body or the pipeline leading to the natural water body; the sewage pipe is connected with the sewage main pipe; the tail end of the drainage system (namely the tail end of the sewage main pipe) is connected with a sewage treatment plant;
assuming that the maximum flow rate of rainwater which can be actually received by the system end (namely the end of the sewage main pipe) 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 processed by a sewage treatment plant, Q2 is the maximum flow rate of the sewage main pipe, and Q3 is the flow rate of the sewage pipe;
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each shunting facility to enable the sum of the flow rates of the sewage interception pipes of each shunting facility to be equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage interception pipes of each shunting facility to be the same;
(b) controlling the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the area of the catchment area corresponding to each shunting facility;
(c) controlling the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the flow passage area of the sewage interception pipe of each shunting facility;
2) when the sewage interception of a certain flow distribution facility is finished, closing the sewage interception pipe of the corresponding flow distribution facility, opening the water outlet pipe of the corresponding flow distribution facility, and controlling the flow rate of the sewage interception pipes arranged in other flow distribution facilities, so that the sum of the flow rates of the sewage interception pipes of other flow distribution facilities is equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe).
In a preferred embodiment of the present invention, the method further comprises the steps of:
3) when the water level in a certain shunting facility is higher than the warning water level, the water outlet pipe corresponding to the shunting facility is opened, and the water body is directly discharged to the natural water body or a pipeline connected with the natural water body through the water outlet pipe.
In a preferred embodiment of the invention, the end of the sewage main pipe is connected with a sewage treatment plant through a storage system, and when the storage system is opened, the maximum flow rate Q of rainwater which can be actually received by the end of the sewage main pipe is (Q2-Q3); when the storage system is off, Q is the minimum of (Q1-Q3) and (Q2-Q3).
In a preferred embodiment of the present invention, the controlling of the flow rate of the sewage intercepting pipe of each corresponding flow splitting facility in proportion to the flow path area of the sewage intercepting pipe of each flow splitting facility means that the flow rate of the sewage intercepting pipe of each corresponding flow splitting facility is distributed in proportion to the flow path area of the sewage intercepting pipe of each flow splitting facility, and the sum of the flow rates of the sewage intercepting pipes of each flow splitting facility is equal to Q.
Preferably, the flow passage area ratio of the sewage intercepting pipes of each shunting facility is the same as the flow rate ratio distributed by the sewage intercepting pipes of each shunting facility.
In a preferred embodiment of the present invention, the controlling of the flow rate of the sewage intercepting pipes of the corresponding respective diversion facilities according to the ratio of the area of the water collecting region corresponding to the respective diversion facilities means that the flow rate of the sewage intercepting pipes of the corresponding respective diversion facilities is distributed according to the ratio of the area of the water collecting region corresponding to the respective diversion facilities, and the sum of the flow rates of the sewage intercepting pipes of the respective diversion facilities is equal to Q.
Preferably, the ratio of the area of the catchment area corresponding to each diversion facility is the same as the ratio of the flow rate distributed by the sewage interception pipe of each corresponding diversion facility.
In a preferred embodiment of the invention, the sewage main comprises one or more storage systems along the line, which may be connected in series or in parallel. The storage regulation facility comprises a storage regulation pool, a storage regulation box culvert, a deep tunnel or a shallow tunnel and the like.
In a preferred embodiment of the present invention, the drainage system further comprises a water switch disposed on the sewage intercepting pipe of each diversion facility and/or a water switch disposed on the water outlet pipe of each diversion facility.
In a preferred embodiment of the invention, the drainage system further comprises a control system, the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities 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 connected with the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities through signals; 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 a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received time monitoring signal; alternatively, the first and second electrodes may be,
the control system comprises a device for monitoring the liquid level of the water 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 shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities; monitoring devices is used for monitoring the aqueous humor liquid level, generates aqueous humor liquid level monitoring signal, and the aqueous humor liquid level monitoring signal who will generate is given the control unit, and the control unit is according to the aperture of the water conservancy switch on the sewage intercepting pipe of each reposition of redundant personnel facility of the aqueous humor liquid level monitoring signal control and/or the water conservancy switch on the outlet pipe of each reposition of redundant personnel facility of receiving.
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 device for monitoring time is selected from a timer and the like; the device for monitoring the liquid level of the water is selected from a liquid level sensor, a liquid level meter, a liquid level switch and the like.
In a preferred embodiment of the present invention, the water conservancy switch on the sewage intercepting pipe of each diversion facility and the water conservancy switch on the water outlet pipe of each diversion facility are respectively and independently selected from one of valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate intercepting check valves, etc.), gates (upper opening gates, lower opening gates, etc.), weir gates (upper opening weirs, lower opening weirs, rotary weir gates, etc.), flap valves (intercepting flap valves, etc.).
In a preferred embodiment of the present invention, the initial rain amount L1 required to cut off water for each diversion facility is set according to the millimeter number of initial rain to be collected in the catchment area corresponding to each diversion facility, 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 in the diversion facility.
In a preferred embodiment of the present invention, the initial rainfall time T1 of each diversion facility 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 diversion facility to flow to the sewage interception pipe of each diversion facility, 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 provided in the shunting facility.
In a preferred embodiment of the present invention, the completion of sewage interception refers to that the number of millimeters of initial rain required to be collected in the catchment area corresponding to the diversion facility reaches the initial rain amount L1 required to be intercepted by the diversion facility, and the number of millimeters of initial rain required to be collected in the catchment area corresponding to the diversion facility may be selected according to factors such as weather and area, and may be, for example, 5-20 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 the sewage interception pipe of each diversion facility reaches the initial rainfall time T1 of the diversion facility, and the time required for all initial rainwater in the corresponding catchment area of the diversion facility to flow to the sewage interception pipe of each diversion facility can be selected according to factors such as weather, regions 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.
In a preferred embodiment of the invention, the diversion facility is selected from one or a combination of two of a storage facility, a diversion well, a shut-off well and a abandonment well.
In a preferred embodiment of the invention, the warning water level of each diversion facility is set according to the height of the lowest point of the terrain in the catchment area corresponding to each diversion facility when the risk of water accumulation occurs.
In a preferred embodiment of the invention, the rain sewage treatment unit further comprises an online treatment facility.
In a preferred embodiment of the invention, the outlet pipe in each diversion facility is connected to the natural body of water through an on-line treatment facility.
In a preferred embodiment of the invention, the water outlet pipe of each diversion facility is connected with the natural water body through a storage facility.
In a preferred embodiment of the invention, the water outlet pipe in each diversion facility is connected with the natural water body through a storage facility and an online treatment facility.
In a preferred embodiment of the invention, the storage facility may be a plurality of storage facilities connected in series or in parallel; the storage regulation facility comprises a storage regulation pool, a storage regulation box culvert, a deep tunnel or a shallow tunnel and the like.
In a preferred embodiment of the present invention, the on-line processing facility may be a plurality of on-line processing facilities connected in series or in parallel; the on-line treatment facilities comprise a biological filter, an on-line treatment tank, a flocculation tank, an inclined plate sedimentation tank, a grit chamber or an artificial wetland and the like.
Example 2
A method for controlling sewage in a drainage system to be gathered into a sewage main pipe during rainfall, wherein the drainage system comprises a plurality of rain sewage treatment units and sewage main pipes which are divided according to areas; the rain and sewage treatment unit comprises a rain pipeline, a sewage pipe connected with the sewage pipeline and a flow dividing facility connected with the rain pipeline; the flow dividing facilities comprise sewage intercepting pipes and water outlet pipes, the sewage intercepting pipes in each flow dividing facility are connected with the sewage main pipe, and the water outlet pipes in each flow dividing facility are connected with the natural water body or the pipeline leading to the natural water body; the sewage pipe is connected with the sewage main pipe; the tail end of the drainage system (namely the tail end of the sewage main pipe) is connected with a sewage treatment plant;
the drainage system also comprises water conservancy switches arranged on the sewage intercepting pipes of the shunting facilities and/or water conservancy switches arranged on the water outlet pipes of the shunting facilities; the control system comprises a device for monitoring rainfall and a control unit in signal connection with the device; the control unit is in signal connection with a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities 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 connected with the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities through signals; 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 a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received time monitoring signal; alternatively, the first and second electrodes may be,
the control system comprises a device for monitoring the liquid level of the water 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 shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities; the monitoring device is used for monitoring the liquid level of the water body, generating a water body liquid level monitoring signal and transmitting the generated water body liquid level monitoring signal to the control unit, and the control unit controls the opening degree of a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received water body liquid level monitoring signal;
assuming that the maximum flow rate of rainwater which can be actually received by the system end (namely the end of the sewage main pipe) 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 processed by a sewage treatment plant, Q2 is the maximum flow rate of the sewage main pipe, and Q3 is the flow rate of the sewage pipe;
if the tail end of the sewage main pipe is connected with a sewage treatment plant through a regulation and storage system, when the regulation and storage system is opened, the maximum flow Q of rainwater which can be actually received by the tail end of the sewage main pipe is (Q2-Q3); when the storage system is turned off, Q is the minimum of (Q1-Q3) and (Q2-Q3);
the method comprises the following steps:
1) when raining, controlling the flow rate of the sewage interception pipes of each shunting facility to enable the sum of the flow rates of the sewage interception pipes of each shunting facility to be equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe), wherein the control method selects one of the following methods:
(a) controlling the flow of the sewage intercepting pipes of each shunting facility to be the same; the maximum flow Q of rainwater which can be actually received by the tail end of the system (namely the tail end of a sewage main pipe) is averagely distributed to the sewage interception pipes of each shunting facility, so that the flow on the sewage interception pipes of each shunting facility is the same, and the sum is Q; for example, the system comprises three shunting facilities, and the flow rates of the sewage interception pipes of the three shunting facilities are Q/3;
(b) controlling the flow of the sewage interception pipes of the corresponding shunting facilities according to the proportion of the areas of the catchment areas corresponding to the shunting facilities; namely, the maximum flow Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is distributed to the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the area of the water collection area corresponding to each shunting facility. 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 sewage main pipe) is Q, the system comprises three shunting facilities, the three shunting facilities correspond to water catchment area areas with a ratio of 2:1:3, and then the flow rate ratio of the sewage interception pipes of the three shunting facilities is 2:1:3, namely the flow rates of the sewage interception pipes of the three shunting facilities are 2Q/6, Q/6 and 3Q/6 respectively;
(c) controlling the flow of the sewage interception pipes of the corresponding shunting facilities according to the proportion of the flow passage area of the sewage interception pipes of the shunting facilities; the maximum flow Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is distributed to the flow of the sewage interception pipe of each corresponding shunting facility according to the proportion of the flow passage area of the sewage interception pipe of each shunting facility; 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 sewage main pipe) is Q, the system comprises three shunting facilities, the ratio of the flow passage areas of the sewage interception pipes of the three shunting facilities is 4:5:6, and then the flow rate ratio of the sewage interception pipes of the three shunting facilities is 4:5:6, namely the flow rates of the sewage interception pipes of the three shunting facilities are 4Q/15, 5Q/15 and 6Q/15 respectively;
2) when the sewage interception of a certain flow distribution facility is finished, closing the sewage interception pipe of the corresponding flow distribution facility, opening the water outlet pipe of the corresponding flow distribution facility, and controlling the flow rate of the sewage interception pipes arranged in other flow distribution facilities, so that the sum of the flow rates of the sewage interception pipes of other flow distribution facilities is equal to the maximum flow rate Q of rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe), wherein the control method selects one of (a), (b) and (c) in the step 1);
for example, the system includes three diversion facilities, which are denoted as a first diversion facility, a second diversion facility and a third diversion facility, when the first diversion facility reaches a set initial rain amount L1 which needs to be intercepted, the first diversion facility is considered to intercept the sewage completely, a water switch on a sewage interception pipe of the first diversion facility is closed, a water outlet pipe of the first diversion facility is opened, the maximum flow Q of the rainwater which can be actually received by the end of the system (namely the end of a sewage main pipe) 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 diversion facility reaches the set initial rain and rain amount L1 which needs to cut off, the second diversion facility is considered to cut off the sewage completely, a water switch on a sewage cutting pipe of the second diversion facility is closed, a water outlet pipe of the second diversion facility is opened, the maximum flow Q of the rainwater which can be actually received by the tail end of the system (namely the tail end of the sewage main pipe) is redistributed, and the distribution method is the same as the steps (a), (b) and (c) in the step 1);
3) when the water level in a certain shunting facility is higher than the warning water level, the water outlet pipe corresponding to the shunting facility is opened, and the water body is directly discharged to the natural water body or a pipeline connected with the natural water body through the water outlet pipe.
Example 3
The present embodiment provides a control system suitable for the method according to embodiment 1 or embodiment 2, the control system comprising a device for monitoring rainfall and a control unit in signal connection therewith; the control unit is in signal connection with a water conservancy switch on a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility; the monitoring device is used for monitoring rainfall, generating rainfall monitoring signals and transmitting the generated rainfall monitoring signals to the control unit, and the control unit controls the opening degree of the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities 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 connected with the water conservancy switches on the sewage intercepting pipes of the shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities through signals; 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 a sewage intercepting pipe of each shunting facility and/or a water conservancy switch on a water outlet pipe of each shunting facility according to the received time monitoring signal; alternatively, the first and second electrodes may be,
the control system comprises a device for monitoring the liquid level of the water 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 shunting facilities and/or the water conservancy switches on the water outlet pipes of the shunting facilities; monitoring devices is used for monitoring the aqueous humor liquid level, generates aqueous humor liquid level monitoring signal, and the aqueous humor liquid level monitoring signal who will generate is given the control unit, and the control unit is according to the aperture of the water conservancy switch on the sewage intercepting pipe of each reposition of redundant personnel facility of the aqueous humor liquid level monitoring signal control and/or the water conservancy switch on the outlet pipe of each reposition of redundant personnel facility of receiving.
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 device for monitoring time is selected from a timer and the like; the device for monitoring the liquid level of the water body comprises a liquid level sensor, a liquid level meter, a liquid level switch 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.