CN207760983U - A kind of drainage system with facility of regulating and storing - Google Patents

Abstract

The utility model discloses a kind of drainage systems with facility of regulating and storing, the drainage system has the effect of intelligent drainage function, the reasonable discharge of water body is realized to the reasonable control of the aperture and associated component of the water conservancy switch in the drainage system by control system, while ensure that flood passage is safe, to the greatest extent shut off dirty water or initial rainwater to facility of regulating and storing, and it is not necessarily to manual operation in use, pass through control unit, the automatic adjustment of water conservancy switch may be implemented, have the characteristics that flexible and changeable, reduces a large amount of manpower and materials.The drainage system can remove the solid particulate matters such as the silt being mingled in water body, the appearance for the problems such as avoiding downstream pipe from blocking.The drainage system shuts off and shunts for rainwater and/or combined sewage, by reasonably regulating and controlling, allows dirty water to shut off, clean water, which is then arranged, reduces pollutional load of the row to natural water to natural water, protects natural water.

Description

A drainage system with regulating and storing facilities

technical field

The utility model belongs to the technical field of drainage, in particular to a drainage system with regulation and storage facilities.

Background technique

At present, the drainage system of cities and buildings mainly includes diversion system, confluence system and mixed flow system, the main purpose of which is to realize the collection, transportation and treatment of water bodies. For example, a system that treats all wastewater in one way is called combined. It has only one drainage system, called the confluence system, and its drainage pipe is called the confluence pipe. The system that treats different types of wastewater in different ways is called the diversion system, which generally has two drainage systems. One can be called a rainwater system, which is used to collect rainwater and industrial wastewater with a very low pollution level that is directly discharged into the water body without treatment, and its pipeline is called a rainwater pipeline. The other can be called a sewage system, which collects domestic sewage and industrial wastewater that needs to be treated before it can be discharged, and its pipeline is called a sewage pipeline. The mixed flow system is a system between the diversion system and the confluence system. It is mainly due to the misconnection and mixing of pipelines in the area of the diversion system, which leads to the occurrence of different types of wastewater in some pipelines, that is, rainwater pipes or sewage. The pipes actually become confluent pipes. Wastewater in urban sewage pipes and combined pipes is often collectively referred to as urban sewage.

With the emergence of modern housing sanitation equipment and high-rise buildings, the population is dense, and the excrement is transported by water, which greatly increases the intensity of urban sewage; coupled with the development of industry, the industrial wastewater has increased greatly, and the rivers and lakes near the city have intolerable pollution. . Therefore, a sewage treatment plant was added, and various water outlets were connected with pipes, and the wastewater in each main drainage pipe was collected into the sewage treatment plant for treatment, forming an intercepting confluence system. The pipeline that connects the water outlet and intercepts the waste water to the sewage treatment plant is called the interception pipeline or sewage interception pipeline.

When it rains, the amount of waste water increases sharply. If all the waste water is intercepted, the interception pipeline and the sewage treatment plant will inevitably need a large scale, which will increase the engineering cost too much. Therefore, the inspection well at the intersection of the main drainage pipe and the interceptor pipe is generally replaced with a shunt well. The structure of the diversion well can have different designs, but the current design is not perfect, and there is no improvement for different sewage and rainwater quantities. In the dry season, there is only sewage in the pipe, and the diversion well can intercept the sewage and flow to the sewage pipe; in the rainy season, part of the rainwater and sewage are intercepted and flow into the sewage pipe, and the rest of the rainwater overflows through the weir in the well and continues to flow downstream. For the flow direction of rainwater and sewage, most of the current control methods use water level or rainfall to control, but the existing water level control method or rainfall control method is not very good for the diversion control of rainwater and sewage, thus losing the diversion The meaning of well existence.

Not only that, when it rains, whether it is the initial rainwater or the middle and late rainwater, it is often mixed with a large amount of solid particles such as sediment when the surface runoff, so these particles are relatively small, but the existing diversion wells only play the role of diversion. There is no effective way to remove the silt and other particles mixed in the water body. If the silt and other particles are not cleaned out in time, they will inevitably deposit in the diversion well or pipeline, and the pipeline will be blocked over time. Caused the paralysis of the drainage system.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a drainage system with regulation and storage facilities, the drainage system is used for the interception and diversion of rainwater and/or sewage, and can effectively remove the silt mixed in the water body, etc. Solid particles to avoid problems such as blockage of downstream pipelines.

The utility model provides a drainage system, the drainage system includes a diversion well, and the diversion well includes a well body of the diversion well and a first retaining wall and a second retaining wall arranged at the bottom of the well body of the diversion well; The first retaining wall and the second retaining wall divide the shunt well body into the first well body, the second well body and the third well body, wherein the first well body is between the first retaining wall and the side wall of the well body , the one between the first retaining wall and the second retaining wall is the second well body, and the one between the second retaining wall and the side wall of the well body is the third well body;

The diversion well also includes four openings, namely a water inlet, a first water outlet, a second water outlet and a third water outlet;

The water inlet is set in the first well body, the first water outlet is set in the first well body or the second well body, and the second water outlet is set in the first well body, the second well body or the second well body In the three well body, the third water outlet is arranged in the third well body;

The diversion well also includes a filter, and the filter is arranged horizontally near the opening of the water inlet or at the bottom of the opening of the water inlet;

The drainage system also includes a regulating and storing facility, and the regulating and storing facility is connected to the second water outlet.

According to the present utility model, the first water outlet is arranged in the first well body, and the second water outlet is arranged in the first well body or the second well body.

According to the present invention, the first water outlet is arranged in the second well body, and the second water outlet is arranged in the second well body or the third well body.

According to the utility model, the first retaining wall and the second retaining wall are arranged in parallel at the bottom of the diversion well.

According to the utility model, a plurality of retaining walls can also be set in the first well body, and the plurality of retaining walls are located between the water inlet and the first retaining wall; a plurality of retaining walls can also be set in the second well body Wall, the plurality of retaining walls are located between the first retaining wall and the second retaining wall; the third well body can also be provided with a plurality of retaining walls, the plurality of retaining walls are located between the second retaining wall and the second outlet.

According to the present utility model, those skilled in the art can understand that the heights of the first retaining wall and the second retaining wall are not specifically limited, and they may be the same or different; preferably, the first retaining wall and/or The height of the second retaining wall is not higher than the height of the bottom of the water inlet; also preferably, the height of the first retaining wall and the second retaining wall are the same and are not higher than the bottom of the water inlet.

According to the utility model, the filter screen is connected with the side wall where the water inlet is located.

According to the utility model, the filter screen is connected to the side wall adjacent to the side wall where the water inlet is located.

According to the utility model, the filter screen is connected to the side wall where the water inlet is located and extends above the second retaining wall.

According to the utility model, the filter screen is connected to the side wall adjacent to the side wall where the water inlet is located and extends to the upper side of the second retaining wall.

According to the utility model, those skilled in the art can understand that the filter screen is a filter screen known in the prior art.

According to the utility model, the filter screen is arranged at the water inlet to filter the particulate matter entering the well body of the diversion well, and the water body flows into the well body of the diversion well after being filtered and separated; The wall and the second retaining wall can further filter the sediment in the water body. When the water filtered by the filter screen passes through the first retaining wall, the remaining particles in the water are deposited at the bottom of the first well body, and the upper part of the water body containing a small amount of particles or no particles overflows through the first retaining wall and enters the second well body , the second well body also includes the water body directly filtered by the filter screen, since the water body in the second well body may still contain a small amount of particulate matter, these small amount of particulate matter will also undergo sedimentation and deposit to the bottom and upper part of the second well body The water body containing a small amount of particulate matter or no particulate matter overflows again through the second retaining wall and enters the third well body, thereby realizing sufficient sedimentation and separation of sediment in the water body.

According to the utility model, the drainage system further includes a first water conservancy switch, a second water conservancy switch and a fourth water conservancy switch; wherein, a first water conservancy switch is provided near the first water outlet for controlling The amount of water passing through the water outlet; a second water conservancy switch is set near the second water outlet to control the water passing through the second water outlet; wherein, a fourth water conservancy switch is set near the third water outlet to use It is used to control the water passing through the third water outlet.

According to the utility model, the drainage system also includes a control system, the control system includes a first monitoring device, a second monitoring device and a control unit connected to the two; the control unit is connected to the first hydraulic switch, the second The water conservancy switch and the fourth water conservancy switch are signal-connected; the first monitoring device and the second monitoring device are used to monitor the signal and send the monitored signal to the control unit, and the control unit controls the first water conservancy switch and the second water conservancy switch according to the received signal. The opening degree of the switch and the fourth hydraulic switch.

According to the utility model, the storage facility is connected to the second water outlet through a pipeline or a corridor, for example, connected to the second water outlet through a primary rain pipe.

According to the utility model, the drainage system further includes a sewage intercepting pipe; the first water outlet is connected to the sewage treatment plant through the sewage intercepting pipe.

According to the utility model, the drainage system further includes an outlet pipe; the third water outlet is connected to a pipeline leading to a natural water body through the outlet pipe.

According to the utility model, the first water outlet is arranged in the first well body, and the first water outlet is connected to the sewage intercepting pipe; the water body discharged from the first water outlet is filtered by a filter screen, and the water body contains a small amount of The sediment can reach the discharge standard of the sewage interceptor, thus effectively solving the sediment problem.

According to the utility model, the first water outlet is arranged in the second well body, and the first water outlet is connected with the sewage intercepting pipe; the water body of the first water outlet is discharged, or filtered through a filter screen and once overflowed and deposited, Alternatively, the water body only contains a small amount of silt after being filtered by a filter screen, which can meet the discharge standard for discharge to the sewage intercepting pipe, thereby effectively solving the silt problem.

According to the utility model, the second water outlet is arranged in the first well body, and the second water outlet is connected to the regulation and storage facility; the water discharged from the second water outlet is filtered by a filter, and the water contains a small amount of The sediment has reached the discharge standard of the storage facilities, thus effectively solving the sediment problem.

According to the utility model, the second water outlet is arranged in the second well body, and the second water outlet is connected to the regulation and storage facility; the water body discharged from the second water outlet may be filtered through a filter screen and deposited by a primary overflow, Alternatively, the water body only contains a small amount of silt after being filtered by a filter, which meets the discharge standard for discharge to storage facilities, thereby effectively solving the silt problem.

According to the utility model, the second water outlet is arranged in the third well body, and the second water outlet is connected to the regulation and storage facility; the water body of the second water outlet is discharged, or filtered through a filter screen and overflowed at least twice sedimentation, or through filter screen filtration and at least one overflow deposition, the water almost no longer contains sediment, and fully meets the discharge standard for discharge to regulation and storage facilities, thereby effectively solving the sediment problem.

According to the utility model, the third water outlet is arranged in the third well body, and the third water outlet is connected to the pipeline leading to the natural water body through the outlet pipe; Filtration and at least two overflow depositions, or filter screen filtration and at least one overflow deposition, the water body hardly contains sediment and can reach the discharge standard for natural water bodies, effectively solving the sediment problem.

According to the utility model, the first monitoring device includes a device for monitoring the liquid level of the water body (such as a liquid level sensor, a liquid level gauge, a liquid level switch, etc.), a device for monitoring the water quality of the water body (such as a water quality detector, an online COD monitors, online TSS monitors, online BOD monitors, online TN monitors, online TP monitors, online NH ₃ -N monitors, online ammonia nitrogen monitors, electrodes, conductivity meters, etc.), monitor the total amount of water At least one of a device (such as an electric hoist with metering function, etc.), a device for monitoring rainfall (such as a rain gauge, etc.), and a device for monitoring time (such as a timer, etc.).

According to the present invention, the first monitoring device can be arranged inside or outside the diversion well according to the requirements of the type. For example, the device for monitoring the liquid level of the water body and the device for monitoring the water quality of the water body are arranged in the well body of the diversion well, the device for monitoring the rainfall is arranged outside the well body of the diversion well, and the device for monitoring the total amount of the water body is arranged on the hydraulic switch in the well body of the diversion well. The device for monitoring time is arranged in the well body of the diversion well or outside the well of the diversion well.

According to the present invention, the second monitoring device includes a device for monitoring the liquid level of the water body (such as a liquid level sensor, a liquid level gauge, a liquid level switch, etc.).

According to the utility model, the second monitoring device is arranged in the regulation and storage facility.

According to the utility model, those skilled in the art can understand that the shape and opening size of the water inlet, the first water outlet, the second water outlet and the third water outlet are not specifically limited, and can be connected with the pipeline or corridor. The shape of the channel or the shape of the water conservancy switch it sets can match. For example, the shapes of the water inlet, the first water outlet, the second water outlet and the third water outlet are circular.

According to the utility model, those skilled in the art can understand that the order and arrangement of the water inlets in the first well body are not limited, and the water inlets can be reasonably set according to the area and terrain height of the well body. Position in the first well body. For example, the water inlet is arranged on the side wall or bottom of the first well body.

According to the present utility model, those skilled in the art can understand that the order and arrangement of the first water outlets in the first well body or the second well body are not limited. The set area and topographical height reasonably set the position of the first water outlet in the first well body or the second well body. For example, the first water outlet is arranged on the side wall of the first well body or the second well body.

According to the present invention, those skilled in the art can understand that the order and arrangement of the second water outlets in the first well body, the second well body or the third well body are not limited. 1. The area and terrain height of the second well body or the third well body are reasonably set at the position of the second water outlet in the first well body, the second well body or the third well body. For example, the second water outlet is arranged on the side wall of the first well body, the second well body or the third well body.

According to the present invention, those skilled in the art can understand that the order and arrangement of the third water outlets in the third well body are not limited, and can be reasonably set according to the area and terrain height of the third well body. The third water outlet is at the position of the third well body. For example, the third water outlet is arranged on the side wall of the third well body.

According to the utility model, those skilled in the art can understand that the quantity and arrangement of the storage facilities in the drainage system are not specifically limited, and can be reasonably arranged according to the area where the system is used, for example, it can be in series or Connect multiple storage facilities in parallel. The regulation and storage facilities may be regulation and storage facilities known in the prior art, for example including regulation and storage tanks, regulation and storage box culverts, deep tunnels or shallow tunnels, and the like.

According to the utility model, the first water conservancy switch, the second water conservancy switch and the fourth water conservancy switch are independently selected from valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate cut-off check valves, etc.), gates ( One of the top-opening gates, bottom-opening gates, etc.), weir gates (upper-opening weir gates, bottom-opening weir gates, rotary weir gates, etc.), flap gates (closing flap gates, etc.).

According to the utility model, the first water conservancy switch can realize the maximum flow limiting function, that is, to ensure that the flow passing through the first water conservancy switch will not exceed the set flow value.

According to the utility model, the second water conservancy switch can realize the maximum current limiting function, that is, to ensure that the flow passing through the second water conservancy switch will not exceed the set flow value.

According to the utility model, the drainage system also includes on-line processing facilities; the on-line processing facilities are arranged on the outlet pipe or on the branch road branched from the outlet pipe and merged into the outlet pipe at the terminal; The branch road where the outlet pipe is branched and the terminal is connected to the natural water body.

When the online treatment facility is set on a branch branched from the outlet pipe and merged into the outlet pipe at the terminal, a seventh water conservancy switch is set on the outlet pipe and between the branch branch and the merged position or, when the online treatment facility is set on a branch branched from the outlet pipe and connected to a natural water body at the terminal, a seventh hydraulic switch is provided on the outlet pipe and at the downstream end of the branch branch. The seventh water conservancy switch is connected to the control unit with signals, and the control unit controls the opening degree of the seventh water conservancy switch according to the received signal.

When the on-line treatment facility is set on the outlet pipe; the water flows into the on-line treatment facility from the inlet end of the on-line treatment facility through the outlet pipe, and flows into the downstream end of the outlet pipe from the outlet end of the on-line treatment facility after being treated.

When the online treatment facility is set on the outlet pipe branch, the flow direction of the water body is adjusted by adjusting the opening of the seventh water conservancy switch; when the seventh water conservancy switch is in the open state, part of the water body flows through the outlet pipe and is directly discharged to In the pipeline of the water body, part of the water flows through the branch set beside the outlet pipe and enters the online treatment facility from the inlet of the online treatment facility. After treatment, it flows from the outlet of the online treatment facility to the downstream end of the outlet pipe or is directly discharged to the outlet pipe The pipeline to the natural water body; when the seventh water conservancy switch is in the shut-off state, all the water flowing through the branch enters the online treatment facility from the inlet of the online treatment facility, and after treatment, flows from the outlet of the online treatment facility to the downstream end of the outlet pipe Or discharge directly to a pipeline leading to a natural body of water.

According to the present utility model, those skilled in the art can understand that the number and arrangement of the online processing facilities in the system are not specifically limited, and can be a plurality of online processing facilities connected in series or in parallel; The area of the system is reasonably arranged. The on-line treatment facility may be an on-line treatment facility known in the prior art, including, for example, a biological filter, an on-line treatment tank, a flocculation tank, an inclined plate sedimentation tank, a grit chamber, or an artificial wetland.

According to the utility model, the seventh hydraulic switch is selected from valves (ball valves, gate valves, knife gate valves, butterfly valves, lift-type rubber plate cut-off check valves, etc.), gates (upper-opening gates, lower-opening gates, etc.), weirs, etc. One of gates (top-opening weir gates, bottom-opening weir gates, rotary weir gates, etc.), flap gates (closing flap gates, etc.).

According to the utility model, the seventh water conservancy switch can realize the maximum current limiting function, that is, to ensure that the flow passing through the seventh water conservancy switch will not exceed the set flow value.

The beneficial effects of the utility model:

1) The drainage system of the utility model has the advantages of powerful functions, etc., and the effective separation and treatment of rainwater and sewage can be realized by using a small amount of land area. The use of the drainage system is not limited by the occasion, and can be applied to any pipe network in the drainage pipe network system.

2) The diversion well of the drainage system of the present utility model includes a filter screen and a retaining wall. After the water body entering the diversion well body is filtered by the filter screen and the retaining wall, solid particles such as silt mixed in the water body can be removed to avoid downstream pipelines. Problems such as road congestion occur.

3) The drainage system of the utility model is equipped with a control system, which does not require manual operation during use. The control unit can realize the automatic adjustment of the water conservancy switch, which has the characteristics of flexibility and change, and reduces a lot of manpower and material resources. Specifically, the drainage system of the present utility model has the effect of intelligent drainage. The reasonable control of the opening of the water conservancy switch and related components in the drainage system by the control system can realize the reasonable discharge of the water body, while ensuring the safety of flood discharge. , to intercept dirty water or initial rainwater to the sewage interception pipe and/or storage facilities to the greatest extent.

4) The drainage system of the present utility model includes regulation and storage facilities. When it rains, due to the high rainfall intensity, the initial rainwater that cannot be intercepted in time to the sewage treatment plant is sent to the regulation and storage facilities for storage, and the later relatively clean rainwater is directly discharged. To the natural water body, the number and amount of overflow that occurs during rainfall can be reduced, thereby reducing the overflow pollution of rainwater. The drainage system effectively solves the problem in the prior art that the sewage intercepting pipe cannot be limited, and clean water or later rainwater will also enter the sewage intercepting pipe and be transported to the sewage treatment plant. Through reasonable control of the discharge channels of dirty water, initial rainwater, and middle and late rainwater, the dirty water can be intercepted to the sewage interception pipe and/or storage facilities to the greatest extent, and the cleaner water can be discharged to natural water bodies.

5) The third water outlet of the drainage system of the present utility model can also be provided with an online treatment facility; the online treatment facility can effectively solve the dirty water that can pollute the natural water body when the fourth water conservancy switch is turned on, so as to completely The early rainwater and the middle and late rainwater are separately treated.

Description of drawings

Fig. 1 is a schematic structural view of the drainage system described in a preferred embodiment of the present invention;

Fig. 2 is a schematic structural view of the drainage system described in a preferred embodiment of the present invention;

Among them, 1-water inlet; 2-first water outlet; 3-second water outlet; 4-third water outlet; 5-first retaining wall; 6-second retaining wall; 7-first well body; 8 -Second well body; 9-Third well body; 10-Filtration screen; 11-Storage facilities; 12-First water conservancy switch; 13-Second water conservancy switch; ; 23-primary rain pipe; 24-outlet pipe; 41-on-line treatment facility; 42-the seventh water conservancy switch.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the contents of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "first", "second", "third", "fourth" and "seventh" are used for descriptive purposes only, and are not intended to indicate or imply relative importance.

Example 1

As shown in Figure 1, the utility model provides a drainage system. The drainage system includes a diversion well, and the diversion well comprises a diversion well body and a first retaining wall 5 and a second Retaining wall 6; the first retaining wall 5 and the second retaining wall 6 divide the shunt well body into a first well body 7, a second well body 8 and a third well body 9, wherein the first retaining wall 5 and the second retaining wall The first well body 7 is between the side walls of the well body, the second well body 8 is between the first retaining wall 5 and the second retaining wall 6, and the second well body is between the second retaining wall 6 and the well body side walls. Mitsui body 9;

The diversion well also includes four openings, namely the water inlet 1, the first water outlet 2, the second water outlet 3 and the third water outlet 4;

The water inlet 1 is arranged in the first well body 7, the first water outlet 2 is arranged in the first well body 7 or the second well body 8, and the second water outlet 3 is arranged in the first well body 7 1. In the second well body 8 or the third well body 9, the third water outlet 4 is arranged in the third well body 9;

The diversion well also includes a filter screen 10, which is arranged horizontally near the opening of the water inlet 1 or at the bottom of the opening of the water inlet 1;

The drainage system also includes a regulation and storage facility 11 , and the regulation and storage facility 11 is connected to the second water outlet 3 .

In a preferred embodiment of the present utility model, the first water outlet 2 is set in the first well body 7 , and the second water outlet 3 is set in the first well body 7 or the second well body 8 .

In a preferred embodiment of the present utility model, the first water outlet 2 is arranged in the second well body 8 , and the second water outlet 3 is arranged in the second well body 8 or the third well body 9 .

In a preferred embodiment of the present utility model, the first retaining wall 5 and the second retaining wall 6 are arranged in parallel at the bottom of the diversion well body.

In a preferred embodiment of the present utility model, a plurality of retaining walls can also be set in the first well body 7, and the plurality of retaining walls are located between the water inlet 1 and the first retaining wall 5; A plurality of retaining walls can also be set in the second well body 8, and the plurality of retaining walls are located between the first retaining wall 5 and the second retaining wall 6; a plurality of retaining walls can also be set in the third well body 9 Retaining walls, the plurality of retaining walls are located between the second retaining wall 6 and the second water outlet 3 .

In a preferred embodiment of the present utility model, those skilled in the art can understand that the heights of the first retaining wall 5 and the second retaining wall 6 are not specifically limited, and they may be the same or different; preferably, the The height of the first retaining wall 5 and/or the second retaining wall 6 is not higher than the bottom height of the water inlet; also preferably, the height of the first retaining wall 5 and the second retaining wall 6 are the same and are not higher than The bottom height of the inlet.

In a preferred embodiment of the present utility model, the filter screen 10 is connected to the side wall where the water inlet 1 is located.

In a preferred embodiment of the present utility model, the filter screen 10 is connected to the side wall adjacent to the side wall where the water inlet 1 is located.

In a preferred embodiment of the present utility model, the filter screen 10 is connected to the side wall where the water inlet 1 is located and extends above the second retaining wall 6 .

In a preferred embodiment of the present invention, the filter screen 10 is connected to the side wall adjacent to the side wall where the water inlet 1 is located and extends above the second retaining wall 6 .

In a preferred embodiment of the present invention, those skilled in the art can understand that the filter screen 10 is a filter screen known in the prior art.

In a preferred embodiment of the present utility model, the filter screen 10 is arranged at the water inlet 1, and is used to filter the particulate matter entering the well body of the diversion well, and the water body flows into the well body of the diversion well after being filtered and separated; The first retaining wall 5 and the second retaining wall 6 arranged at the bottom of the well body can further filter the sediment in the water body. When the water body filtered by the filter screen 10 passes through the first retaining wall 5, the remaining particles in the water body are deposited to the bottom of the first well body, and the water body containing a small amount of particles or no particles in the upper part overflows through the first retaining wall 5 and enters the second well body. In the well body 8, the water body directly filtered by the filter screen 10 is also included in the second well body 8. Since the water body in the second well body 8 may still contain a small amount of particulate matter, these small amount of particulate matter will also be deposited. The bottom of the second well body 8 , the upper part of which contains a small amount of particulate matter or does not contain particulate matter overflows again through the second retaining wall 6 and enters the third well body 9 , thereby achieving sufficient sedimentation and separation of sediment in the water body.

In a preferred embodiment of the present utility model, the drainage system further includes a first water conservancy switch 12, a second water conservancy switch 13 and a fourth water conservancy switch 14; A water conservancy switch 12 is used to control the amount of water passing through the first water outlet 2; a second water conservancy switch 13 is provided near the second water outlet 3 to control the amount of water passing through the second water outlet 3; wherein, in A fourth water conservancy switch 14 is arranged near the third water outlet 4 for controlling the amount of passing water passing through the third water outlet 4 .

In a preferred embodiment of the present utility model, the drainage system further includes a control system, and the control system includes a first monitoring device, a second monitoring device and a control unit connected to them; the control unit is connected to the second monitoring device. A water conservancy switch 12, the second water conservancy switch 13 and the fourth water conservancy switch 14 are signal connected; the first monitoring device and the second monitoring device are used to monitor signals and deliver the monitored signals to the control unit, and the control unit receives the signal according to the The opening degrees of the first hydraulic switch 12 , the second hydraulic switch 13 and the fourth hydraulic switch 14 are controlled.

In a preferred embodiment of the present utility model, the regulation and storage facility 11 is connected to the second water outlet 3 through a pipeline or a corridor, for example, connected to the second water outlet 3 through an initial rain pipe 23 .

In a preferred embodiment of the present utility model, the drainage system further includes a sewage intercepting pipe 22; the first water outlet 2 is connected to a sewage treatment plant through the sewage intercepting pipe.

In a preferred embodiment of the present utility model, the drainage system further includes a water outlet pipe 24; the third water outlet is connected to a pipeline leading to a natural water body through the water outlet pipe.

In a preferred embodiment of the present utility model, the first water outlet 2 is arranged in the first well body 7, and the first water outlet 2 is connected to the sewage intercepting pipe; the water body of the first water outlet 2 is discharged, or After being filtered by the filter screen 10, the water body contains a small amount of silt, which can meet the discharge standard for discharge to the sewage intercepting pipe, thus effectively solving the silt problem.

In a preferred embodiment of the present utility model, the first water outlet 2 is arranged in the second well body 8, and the first water outlet 2 is connected to the sewage intercepting pipe; the water body of the first water outlet 2 is discharged, or After filtering through the filter screen 10 and primary overflow deposition, or filtering through the filter screen 10, the water body only contains a small amount of sediment, which can meet the discharge standard for discharge to the sewage intercepting pipe, thereby effectively solving the sediment problem.

In a preferred embodiment of the present utility model, the second water outlet is arranged in the first well body 7, and the second water outlet is connected to the regulation and storage facility; the water discharged from the second water outlet passes through the filter screen 10 Filtration, the water body contains a small amount of sediment, which meets the discharge standard for discharge to storage facilities, thereby effectively solving the sediment problem.

In a preferred embodiment of the present utility model, the second water outlet is arranged in the second well body 8, and the second water outlet is connected to the regulation and storage facility; the water body discharged from the second water outlet, or through the filter 10 filtration and primary overflow deposition, or filtration through the filter screen 10, the water body only contains a small amount of sediment, which meets the discharge standard for discharge to storage facilities, thereby effectively solving the sediment problem.

In a preferred embodiment of the present utility model, the second water outlet is arranged in the third well body 9, and the second water outlet is connected to the regulation and storage facility; the water body discharged from the second water outlet, or through the filter screen 10 filtration and at least two overflow depositions, or through the filter screen 10 filtration and at least one overflow deposition, the water almost no longer contains silt, and fully meets the discharge standard for discharge to storage facilities, thereby effectively solving the problem of mud sand problem.

In a preferred embodiment of the present utility model, the third water outlet is arranged in the third well body 9, and the third water outlet is connected with the pipeline leading to the natural water body through the outlet pipe; the third water outlet is discharged or filtered by the filter screen 10 and at least two overflow depositions, or filtered by the filter screen 10 and at least one overflow deposition, the water body hardly contains sediment anymore, and can reach the discharge standard for natural water bodies , effectively solved the sediment problem.

In a preferred embodiment of the present invention, the first monitoring device includes a device for monitoring the liquid level of the water body (such as a liquid level sensor, a liquid level gauge, a liquid level switch, etc.), and a device for monitoring the water quality of the water body (for example, it can be It is a water quality detector, online COD monitor, online TSS monitor, online BOD monitor, online TN monitor, online TP monitor, online NH ₃ -N monitor, online ammonia nitrogen monitor, electrode, conductivity meter, etc.) , at least one of a device for monitoring the total amount of water (for example, an electric hoist with metering function, etc.), a device for monitoring rainfall (such as a rain gauge, etc.), and a device for monitoring time (such as a timer, etc.).

In a preferred embodiment of the present utility model, the first monitoring device can be arranged inside or outside the diversion well according to type requirements. For example, the device for monitoring the liquid level of the water body and the device for monitoring the water quality of the water body are arranged in the well body of the diversion well, the device for monitoring the rainfall is arranged outside the well body of the diversion well, and the device for monitoring the total amount of the water body is arranged on the hydraulic switch in the well body of the diversion well. The device for monitoring time is arranged in the well body of the diversion well or outside the well of the diversion well.

In a preferred embodiment of the present utility model, the second monitoring device includes a device for monitoring the liquid level of the water body (such as a liquid level sensor, a liquid level gauge, a liquid level switch, etc.).

In a preferred embodiment of the present utility model, the second monitoring device is set in the regulation and storage facility.

In a preferred embodiment of the present utility model, those skilled in the art can understand that the shape and opening size of the water inlet 1, the first water outlet 2, the second water outlet 3 and the third water outlet 4 are not specifically limited. , can match the shape of the pipeline or corridor connected to it or the shape of the water conservancy switch set there. For example, the shape of the water inlet 1 , the first water outlet 2 , the second water outlet 3 and the third water outlet 4 is circular.

In a preferred embodiment of the present utility model, those skilled in the art can understand that the order and arrangement of the water inlets 1 in the first well body 7 are not limited, and can be set according to the area and terrain of the well body. The position of the water inlet 1 in the first well body 7 is set reasonably. For example, the water inlet 1 is arranged on the side wall or bottom of the first well body 7 .

In a preferred embodiment of the present utility model, those skilled in the art can understand that the order and arrangement of the first water outlets 2 in the first well body 7 or the second well body 8 are not limited. The area and terrain height of the first well body 7 or the second well body 8 are reasonably set at the position of the first water outlet 2 in the first well body 7 or the second well body 8 . For example, the first water outlet 2 is arranged on the side wall of the first well body 7 or the second well body 8 .

In a preferred embodiment of the present utility model, those skilled in the art can understand the sequence and arrangement of the second water outlets 3 in the first well body 7, the second well body 8 or the third well body 9 The method is not limited, and the second water outlet 3 can be reasonably set in the first well body 7, the second well body 7 and the second well body according to the area and terrain height of the first well body 7, the second well body 8 or the third well body 9. body 8 or the position of the third well body 9. For example, the second water outlet 3 is arranged on the side wall of the first well body 7 , the second well body 8 or the third well body 9 .

In a preferred embodiment of the present utility model, those skilled in the art can understand that the order and arrangement of the third water outlets 4 in the third well body 9 are not limited, and can be set according to the third well body 9 Reasonably set the position of the third water outlet 4 in the third well body 9 according to the regional area and the height of the terrain. For example, the third water outlet 4 is arranged on the side wall of the third well body 9 .

In a preferred embodiment of the present invention, those skilled in the art can understand that the number and arrangement of the storage facilities in the drainage system are not specifically limited, and can be reasonably arranged according to the area where the system is used , for example, multiple regulation and storage facilities can be connected in series or in parallel. The regulation and storage facilities may be regulation and storage facilities known in the prior art, for example including regulation and storage tanks, regulation and storage box culverts, deep tunnels or shallow tunnels, and the like.

In a preferred embodiment of the present utility model, the first water conservancy switch, the second water conservancy switch and the fourth water conservancy switch are independently selected from valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate cut-off check valves) Valves, etc.), gates (upper-opening gates, lower-opening gates, etc.), weir gates (upper-opening weir gates, lower-opening weir gates, rotary weir gates, etc.), flap gates (closing flap gates, etc.) A sort of.

In a preferred embodiment of the present utility model, the first water conservancy switch can realize a maximum flow limiting function, that is, to ensure that the flow passing through the first water conservancy switch will not exceed a set flow value.

In a preferred embodiment of the present utility model, the second water conservancy switch can realize a maximum flow limiting function, that is, to ensure that the flow passing through the second water conservancy switch will not exceed a set flow value.

Example 2

As shown in Figure 2, a kind of drainage system with regulation and storage facility, described drainage system also comprises on-line treatment facility 41; The terminal is merged into the branch of the outlet pipe; or it is set on the branch branched from the outlet and the terminal is connected to the natural water body.

When the on-line treatment facility 41 is set on the branch branched from the outlet pipe and merged into the outlet pipe at the terminal, a seventh water conservancy system is arranged on the outlet pipe and between the branch branch and the merged position. switch 42; or, when the online treatment facility 41 is set on a branch branched from the outlet pipe and connected to a natural water body at the terminal, a seventh water conservancy system is set on the outlet pipe and at the downstream end of the branch branch branch. Switch 42. The seventh water conservancy switch 42 is connected to the control unit with a signal, and the control unit controls the opening degree of the seventh water conservancy switch 42 according to the received signal.

When the on-line treatment facility 41 is arranged on the outlet pipe; the water body flows into the on-line treatment facility 41 from the inlet end of the on-line treatment facility 41 through the outlet pipe, and after being treated, flows into the downstream end of the outlet pipe from the outlet end of the on-line treatment facility 41 .

When the online treatment facility 41 is set on the branch road of the water outlet pipe, the flow direction of the water body is adjusted by adjusting the opening degree of the seventh water conservancy switch 42; In the pipeline leading to the natural water body, part of the water flows into the online treatment facility 41 from the inlet port of the online treatment facility 41 through the branch arranged next to the outlet pipe, and after being treated, flows into the downstream of the outlet pipe from the outlet end of the online treatment facility 41 end or directly discharged to the pipeline leading to the natural water body; when the seventh water conservancy switch 42 was in the shut-off state, all the water flowed through the branch and entered the online treatment facility 41 through the inlet port of the online treatment facility 41, and after treatment, the on-line treatment The outlet end of the facility 41 flows into the downstream end of the outlet pipe or directly discharges to a pipeline leading to a natural water body.

In a preferred embodiment of the present utility model, those skilled in the art can understand that the number and arrangement of the online processing facilities in the system are not specifically limited, and may be multiple online processing facilities connected in series or in parallel; its specific The arrangement method can be reasonably arranged according to the area where the system is used. The on-line treatment facility may be an on-line treatment facility known in the prior art, including, for example, a biological filter, an on-line treatment tank, a flocculation tank, an inclined plate sedimentation tank, a grit chamber, or an artificial wetland.

In a preferred embodiment of the present utility model, the seventh hydraulic switch is selected from valves (ball valves, gate valves, knife gate valves, butterfly valves, lifting rubber plate cut-off check valves, etc.), gates (upper-opening gates, lower-opening gates, etc.), Type gate, etc.), weir gate (up-opening weir gate, bottom-opening weir gate, rotary weir gate, etc.), flap gate (closing flap gate, etc.).

In a preferred embodiment of the present utility model, the seventh water conservancy switch can realize a maximum flow limiting function, that is, to ensure that the flow passing through the seventh water conservancy switch will not exceed a set flow value.

Example 3

This embodiment provides a drainage control method controlled by the water level-water quality method. The drainage control method is based on the drainage system described in Embodiment 1, and the drainage system includes a control system. The first control system in the control system The monitoring device includes a device for monitoring the liquid level of the water body and a device for monitoring the water quality of the water body, and they are all arranged in the well body of the diversion well. The second monitoring device in the control system includes a device for monitoring the liquid level of the water body and is arranged in the regulation and storage facility. In the control unit of the control system, set the standard water level H1 of the diversion well, set the warning water level H2 of the diversion well, the pollutant concentration standard value C1 and the highest water storage level H3 of the regulation and storage facility; the method includes the following steps:

1c) The water body enters the diversion well from the water inlet, and the water body liquid level height H in the well body of the diversion well is monitored in real time by the device for monitoring the water body liquid level, and the water body water quality C in the well is monitored in real time by the device for monitoring the water body water quality; Monitor the water level height H' in the storage facility;

2c) When C≥C1 and H<H1, the first water conservancy switch is in the on state, the second water conservancy switch is in the off state, and the fourth water conservancy switch is in the interception state; the water body is discharged to the sewage treatment plant;

3c) When C≥C1 and H1≤H<H2, if H'<H3, the first water conservancy switch is in the open state, the second water conservancy switch is in the open state, and the fourth water conservancy switch is in the interception state; part of the water body is discharged to the sewage treatment Plant, part of the water body is discharged to the storage facility for temporary storage; if H'≥H3, the first water conservancy switch is on, the second water conservancy switch is off, and the fourth water conservancy switch is in the interception state; the water body is discharged to the sewage treatment plant;

4c) When C≥C1 and H≥H2, if H'<H3, the first water conservancy switch is on, the second water conservancy switch is on, and the fourth water conservancy switch is on; part of the water is discharged to the sewage treatment plant, Part of the water body is discharged to the regulation and storage facilities for temporary storage, and part of the water body flows through the pipeline connecting the outlet pipe with the natural water body, and then discharged into the natural water body; if H'≥H3, the first water conservancy switch is on, and the second water conservancy switch is on The switch is in the closed state, and the fourth water conservancy switch is in the open state; part of the water body is discharged to the sewage treatment plant, and part of the water body flows through the pipeline connected to the natural water body through the outlet pipe, and then discharged into the natural water body;

5c) When C<C1, the first water conservancy switch is in the off state, the second water conservancy switch is in the off state, and the fourth water conservancy switch is in the on state; the water flows through the pipeline connecting the outlet pipe with the natural water body, and then drains to the natural water. in a body of water.

In a preferred embodiment of the present invention, the standard water level H1 of the diversion well is set in the control unit of the control system according to the height of the diversion well to the average topographic point in the receiving water area when the risk of water accumulation occurs. The warning water level H2 of the diversion well is set in the control unit of the control system according to the height of the lowest point of the diversion well in the receiving water area when the risk of water accumulation occurs. The maximum water storage level H3 of the regulation and storage facility is set in the control unit of the control system according to the capacity of the regulation and storage facility. The device for monitoring the liquid level of the water body is a liquid level sensor, a liquid level gauge, a liquid level switch and the like.

In a preferred embodiment of the present invention, the pollutant concentration standard value C1 is set in the control unit of the control system according to the environmental capacity of the discharged natural water body and the water quality of the water body entering the diversion well. The device for monitoring water quality is a water quality detector, an online COD monitor, an online ammonia nitrogen monitor, an online TSS monitor, an online BOD monitor, an online NH3 _- N monitor, an online TP monitor, an online TN monitor, Electrodes, conductivity meters, etc., monitor the concentration of pollutants in the water body of the diversion well, and the pollutants include one or more of TSS, COD, BOD, NH ₃ -N, TN or TP. The water quality detector can use electrode method, UV optical method, optical scattering method, etc. to realize the detection of the water quality of the water body.

In a preferred embodiment of the present utility model, the environmental capacity of the natural water body discharged into by the diversion well can be a natural water body such as rivers, lakes and seas; when the environmental capacity of the natural water body is larger (such as the ocean), the pollutant concentration The standard value C1 can be appropriately increased; when the environmental capacity of the natural water body is small (such as a lake), the standard value C1 of pollutant concentration can be appropriately reduced. When the water quality of the water entering the diversion well is good, such as rainwater in the middle and late stages, the pollutant concentration standard value C1 can be appropriately reduced; when the water quality of the water entering the diversion well is poor, such as domestic sewage and/or initial For rainwater, the standard value of pollutant concentration C1 can be appropriately increased. Its purpose is to reduce the pollution of natural water bodies as little as possible.

Example 4

When the drainage system includes online treatment facilities, that is, when the drainage system corresponding to Embodiment 2, the drainage control method of Embodiment 3 is adopted, and further includes the following steps:

When the fourth water conservancy switch is in the open state and the online treatment facility is set on the outlet pipe; into the downstream end of the outlet pipe.

When the fourth water conservancy switch is on and the on-line treatment facility is set on the outlet pipe branch, the flow direction of the water body is adjusted by adjusting the opening of the seventh water conservancy switch; when the seventh water conservancy switch is on, part of the water body flows through The outlet pipe is directly discharged into the pipeline leading to the natural water body. Part of the water flows through the branch set beside the outlet pipe and enters the online treatment facility from the inlet port of the online treatment facility. The downstream end of the water pipe or directly discharges to the pipeline leading to the natural water body; when the seventh water conservancy switch is in the shut-off state, all the water flows through the branch set next to the outlet pipe and enters the online treatment facility from the inlet port of the online treatment facility. After that, it flows from the outlet end of the online treatment facility to the downstream end of the outlet pipe or directly discharges to the pipeline leading to the natural water body.

In the above-mentioned embodiments 3-4, the first water conservancy switch, the second water conservancy switch and the seventh water conservancy switch can realize the maximum current limiting function, and their being in the open state means that the flow value of the water conservancy switch is less than or equal to the set value Maximum flow value. This can be realized by adjusting the opening degree of the hydraulic switch through the control unit in the control system.

In the above-mentioned embodiment 3-4, the fourth water conservancy switch being in the open state means that the water body can flow to the natural water body through the water conservancy switch.

In the above-mentioned embodiments 3-4, the fourth water conservancy switch and the seventh water conservancy switch being in the shut-off state refer to adjusting the opening of the water conservancy switch to ensure that the water body is closed at the upstream end of the water conservancy switch and cannot pass through the water conservancy switch. Switch flow to natural bodies of water.

In the above-mentioned embodiment 3-4, the water conservancy switch being in the off state means that the flow value of the water passing through the water conservancy switch is zero.

As mentioned above, embodiment of this invention was described. However, this invention is not limited to said embodiment. All modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (32)

1. a kind of drainage system, which is characterized in that the drainage system includes shunting well, the shunting well by shunting well well body, First barricade, the second barricade, strainer and four opening compositions；First barricade and the second barricade are set to the shunting well well Body bottom；Shunting well well body is divided into the first well body, the second well body and third well body by first barricade and the second barricade, In, it is the first well body between the first barricade and well body side wall, is the second well body between the first barricade and the second barricade, second It is third well body between barricade and well body side wall；

Four openings are water inlet, the first water outlet, the second water outlet and third water outlet respectively；

The water inlet is set in the first well body, and first water outlet is set in the first well body or the second well body, described Second water outlet is set in the first well body, the second well body or third well body, and the third water outlet is set in third well body；

The strainer is arranged horizontally at close to water inlet opening or water inlet open bottom；

The drainage system further includes facility of regulating and storing, and the facility of regulating and storing is connected with the second water outlet；

The drainage system further includes cutting dirty pipe；First water outlet is connected by cutting dirty pipe with sewage treatment plant；The row Water system further includes outlet pipe；The third water outlet is connected by outlet pipe with the pipeline towards natural water.

2. drainage system according to claim 1, which is characterized in that first water outlet is set in the first well body, Second water outlet is set in the first well body or the second well body.

3. drainage system according to claim 1, which is characterized in that first water outlet is set in the second well body, Second water outlet is set in the second well body or third well body.

4. drainage system according to claim 1, which is characterized in that first barricade and the second barricade are arranged in parallel in Shunting well well body bottom.

5. drainage system according to claim 1, which is characterized in that the height of first barricade and/or the second barricade Not higher than the bottom level of water inlet.

6. drainage system according to claim 1, which is characterized in that the height of first barricade and the second barricade is identical And it is not higher than the bottom level of water inlet.

7. drainage system according to claim 1, which is characterized in that the strainer is connected with the side wall where water inlet.

8. drainage system according to claim 7, which is characterized in that the strainer is adjacent with the side wall where water inlet Side wall is connected.

9. drainage system according to claim 7, which is characterized in that the strainer is connected simultaneously with the side wall where water inlet It extends to above the second barricade.

10. drainage system according to claim 8, which is characterized in that the strainer is adjacent with the side wall where water inlet Side wall be connected and extend to above the second barricade.

11. according to the drainage system described in any one of claim 1-10, which is characterized in that the drainage system further includes One water conservancy switch, the second water conservancy switch and the 4th water conservancy switch；Wherein, the first water conservancy is being set close to first water outlet Switch, for controlling the water amount by the first water outlet；It switchs, uses the second water conservancy is arranged close to second water outlet In the water amount that control passes through the second water outlet；Wherein, the 4th water conservancy switch is being set close to the third water outlet, is being used for The water amount that control passes through third water outlet.

12. drainage system according to claim 11, which is characterized in that the drainage system further includes control system, institute It includes the first monitoring device, the second monitoring device and the control unit being connect with the two signal to state control system；The control is single Member is connect with the first water conservancy switch, the second water conservancy switch and the 4th water conservancy switching signal；First monitoring device and the second prison Device is surveyed for monitoring signals and the signal of monitoring is conveyed to control unit, control unit controls first according to received signal The aperture of water conservancy switch, the second water conservancy switch and the 4th water conservancy switch.

13. according to the drainage system described in any one of claim 1-10, which is characterized in that the facility of regulating and storing passes through pipeline Or gallery is connected with the second water outlet.

14. drainage system according to claim 13, which is characterized in that the facility of regulating and storing is gone out by first rain pipe with second The mouth of a river is connected.

15. drainage system according to claim 12, which is characterized in that first monitoring device includes monitoring water body liquid The device of position monitors the device of water quality, monitors the device of water body total amount, monitors the device of rainfall, the device of monitoring time At least one of.

16. drainage system according to claim 15, which is characterized in that the device of the monitoring water body liquid level is that liquid level passes Sensor, liquid level gauge or liquid-level switch, the device of the monitoring water quality is Water quality detector, online COD monitors, online TSS monitors, online BOD monitors, online TN monitors, online TP monitors, online NH₃- N monitors, online ammonia nitrogen prison Instrument, electrode or conductivity meter are surveyed, the device of the monitoring water body total amount is the electronic headstock gear with function of measuring, the monitoring The device of rainfall is rainfall gauge, and the device of the monitoring time is timer.

17. drainage system according to claim 15 or 16, which is characterized in that the device and prison of the monitoring water body liquid level The device for surveying water quality is arranged in shunting well well body, and the device of the monitoring rainfall is arranged outside shunting well well body, described The device of monitoring water body total amount is arranged on the switch of the water conservancy in shunting well well body, and the device setting of the monitoring time is shunting In well well body or outside shunting well well body.

18. drainage system according to claim 12, which is characterized in that second monitoring device includes monitoring water body liquid The device of position.

19. drainage system according to claim 18, which is characterized in that the device of the monitoring water body liquid level is that liquid level passes Sensor, liquid level gauge or liquid-level switch.

20. the drainage system according to claim 18 or 19, which is characterized in that the second monitoring device setting is being regulated and stored In facility.

21. according to the drainage system described in any one of claim 1-10, which is characterized in that the facility of regulating and storing be series connection or Multiple facilities of regulating and storing in parallel；The facility of regulating and storing includes storage pond, box culvert of regulating and storing, deep tunnel or shallow tunnel.

22. drainage system according to claim 11, which is characterized in that the first water conservancy switch, the second water conservancy switch Separately one kind in valve, gate, weir gate or flap valve is switched with the 4th water conservancy.

23. drainage system according to claim 22, which is characterized in that the valve be selected from ball valve, gate valve, knife gate valve, Butterfly valve or lift rubber slab shut off check-valves；The gate is selected from upper open type gate or bottom-open type gate；The weir gate is selected from Upper open type weir gate, bottom-open type weir gate or rotary weir gate；The flap valve is selected from the flap valve that shuts off.

24. drainage system according to claim 11, which is characterized in that maximum limit may be implemented in the first water conservancy switch Function is flowed, that is, ensures that the flow switched by first water conservancy does not exceed the flow value of setting.

25. drainage system according to claim 11, which is characterized in that maximum limit may be implemented in the second water conservancy switch Function is flowed, that is, ensures that the flow switched by second water conservancy does not exceed the flow value of setting.

26. according to the drainage system described in any one of claim 1-10, which is characterized in that the drainage system further include Line treatment facility；The online processing facility is arranged on outlet pipe or setting is separating and terminal is incorporated to out from outlet pipe pipeline The branch road of water pipe line；Or be arranged from outlet pipe pipeline separate and terminal be connected to natural water branch road on.

27. drainage system according to claim 26, which is characterized in that online processing facility setting is from outlet pipe Pipeline separates and terminal be incorporated to outlet pipe pipeline branch road, the position for separating and being incorporated on outlet pipe pipeline and in branch it Between setting the 7th water conservancy switch；Alternatively, online processing facility setting is separating and terminal is connected to nature from outlet pipe pipeline The 7th water conservancy switch is arranged in the branch road of water body, the downstream that position is separated on outlet pipe pipeline and in branch.

28. drainage system according to claim 27, which is characterized in that the 7th water conservancy switch and control unit signal Connection, control unit control the aperture that the 7th water conservancy switchs according to received signal.

29. drainage system according to claim 26, which is characterized in that the online processing facility is serial or parallel connection Multiple online processing facilities；The online processing facility includes biofilter, online processing pond, flocculation basin, inclined-plate clarifying basin, sinks Sand pond or artificial swamp.

30. the drainage system according to claim 27 or 28, which is characterized in that the 7th water conservancy switch selected from valve, One kind in gate, weir gate or flap valve.

31. drainage system according to claim 30, which is characterized in that the valve be selected from ball valve, gate valve, knife gate valve, Butterfly valve or lift rubber slab shut off check-valves；The gate is selected from upper open type gate or bottom-open type gate；The weir gate is selected from Upper open type weir gate, bottom-open type weir gate or rotary weir gate；The flap valve is selected from the flap valve that shuts off.

32. the drainage system according to claim 27 or 28, which is characterized in that the 7th water conservancy switch may be implemented most Big current-limiting function ensures that the flow switched by the 7th water conservancy does not exceed the flow value of setting.