CN107761902B

CN107761902B - Drainage system with sewage interception pipe and on-line treatment facility and drainage control method

Info

Publication number: CN107761902B
Application number: CN201710917874.7A
Authority: CN
Inventors: 周超; 覃应机
Original assignee: Wuhan Shengyu Smart Ecological Environmental Protection Co ltd
Current assignee: Wuhan Shengyu Smart Ecological Environmental Protection Co ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2024-04-02
Anticipated expiration: 2037-09-30
Also published as: CN107761902A

Abstract

The invention discloses a drainage system with a sewage interception pipe and an on-line treatment facility and a drainage control method, wherein the drainage system has an intelligent drainage effect, reasonable drainage of a water body is realized by reasonably controlling the opening of a water conservancy switch and related components in the drainage system through the control system, the safety of flood discharge is ensured, meanwhile, dirty water or initial rainwater is intercepted to a regulating and accumulating facility to the greatest extent, manual operation is not needed in the use process, the automatic adjustment of the water conservancy switch can be realized through a control unit, the characteristics of flexibility, variability and the like are realized, and a large amount of manpower and material resources are reduced. The regulation and control of the drainage control method effectively solves the problems that in the prior art, a sewage interception pipe cannot limit flow, clean water or later rainwater can enter the sewage interception pipe to be conveyed to a sewage treatment plant. Through reasonable control dirty water, initial rainwater and the drainage way of middle and later period rainwater, furthest cut off dirty water to the regulation facility, discharge cleaner water to natural water.

Description

Drainage system with sewage interception pipe and on-line treatment facility and drainage control method

Technical Field

The invention belongs to the technical field of drainage, and particularly relates to a drainage system with a sewage interception pipe and an on-line treatment facility and a drainage control method.

Background

At present, drainage systems of cities and building groups mainly comprise a diversion system, a confluence system and a mixed flow system, and the main purpose of the drainage systems is to collect, convey and treat water bodies. For example, a system for treating all waste water in one way is called a combined system. It has only one drainage system, called confluence system, and its drainage pipeline is called confluence pipeline. The system for treating wastewater with different properties in different ways is called split system, and generally has two drainage systems. One, which may be referred to as a rainwater system, is used to collect rainwater and low-pollution industrial wastewater that is directly discharged from a water body without treatment, and the pipeline is called a rainwater pipeline. Another type of system may be called a sewage system, in which domestic sewage is collected and industrial waste water which needs to be treated before it is discharged, and a pipeline thereof is called a sewage pipeline. The mixed flow system is a system between the split flow system and the combined flow system, and is mainly caused by that part of pipelines are connected in a staggered manner, mixed manner and the like in the split flow system area, so that wastewater with different properties appears in part of pipelines, namely, a rainwater pipeline or a sewage pipeline is actually changed into a combined flow pipeline. The wastewater in municipal sewage pipelines and converging pipelines is often referred to collectively as municipal wastewater.

With the advent of modern house sanitary equipment and high-rise buildings, the population is dense, and the feces are conveyed by water flow, so that the strength of urban sewage is greatly increased; in addition, the industrial wastewater is greatly increased, and intolerable pollution is caused in rivers and lakes near the city. And then, adding a sewage treatment plant, connecting the sewage treatment plant with each water outlet by using a pipeline, and collecting and treating the wastewater in each drainage main pipe by using the sewage treatment plant to form a closure type converging system. The pipeline which is connected with the water outlet and intercepts wastewater to the sewage treatment plant is called an intercepting pipeline or a sewage intercepting pipeline.

The amount of wastewater suddenly increases during rainfall, and if all the wastewater is trapped, the interception pipeline and the sewage treatment plant are inevitably required to be large in scale, and engineering cost is excessively increased. The manhole at the intersection of the drain main and the cutoff pipe is typically replaced with a diverter well. The structure of the diversion well can have different designs, but the current design is not perfect, and no improvement is made for different sewage and rain water quantities. In dry seasons, only sewage is contained in the pipe, so that the sewage can be caught by the diversion well and flows to the sewage pipe; during rainy season, part of rainwater and sewage are caught and flow into the sewage pipe, and the rest rainwater overflows through the well weir and flows to the downstream. Most of the current control methods for the flow direction of rainwater and sewage adopt water level or rainfall to control, but the current water level control method or rainfall control method is not good for the diversion control of the rainwater and the sewage, so that the meaning of a diversion well is lost.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a drainage system with a sewage interception pipe and an on-line treatment facility and a drainage control method, wherein the drainage system is used for intercepting and diverting rainwater and/or sewage, and the reasonable regulation and control are adopted to reasonably divert water and realize reasonable allocation of resources.

The invention provides a drainage system, which comprises a diversion well, wherein the diversion well comprises a diversion well body and four openings which are respectively a water inlet, a first water outlet, a second water outlet and a third water outlet, wherein the four openings are arranged in the diversion well body;

the drainage system further comprises a first water conservancy switch, a third water conservancy switch and a fourth water conservancy switch; the first water conservancy switch is arranged near the first water outlet and used for controlling the water passing quantity passing through the first water outlet; a third water conservancy switch is arranged near the second water outlet and is used for controlling the water passing quantity passing through the second water outlet; a fourth water conservancy switch is arranged near the third water outlet and is used for controlling the water passing quantity passing through the third water outlet;

the drainage system further comprises an on-line treatment facility, and the on-line treatment facility is connected with the second water outlet.

The invention also provides a drainage control method of the drainage system, which comprises at least one of a water level method, a water quality-water level method, a time-water level method, a total amount-water level method and a rainfall-water level method.

The invention has the beneficial effects that:

1) The drainage system has the advantages of small occupied area, powerful functions and the like, and can realize effective separation treatment of rainwater and sewage by using a small amount of land area. The use of the drainage system is not limited by occasions, and the drainage system can be suitable for any pipe network in the drainage pipe network system.

2) The drainage system is provided with the control system, manual operation is not needed in the use process, automatic adjustment of the gate can be realized through the control unit, the drainage system has the characteristics of flexibility, variability and the like, and a large amount of manpower and material resources are reduced. Specifically, the drainage system has the effect of intelligent drainage, reasonable drainage of water is realized by reasonably controlling the opening of the water conservancy switch and related components in the drainage system through the control system, and dirty water or initial rainwater is stopped to an on-line treatment facility to the greatest extent while flood safety is ensured.

3) The third water outlet of the drainage system can be provided with a regulation facility and an optional integrated treatment facility; the regulation and storage facilities and the optional integrated treatment facilities can effectively solve the problem that dirty water which can pollute natural water is still mixed when the fourth water conservancy switch is started, and the primary rainwater and the middle and later rainwater can be thoroughly split.

4) The drainage control method comprises a water level method, a water quality-water level method, a time-water level method, a total quantity-water level method and a rainfall-water level method, and the method effectively solves the drainage control problem of a diversion well which is not connected with a sewage treatment plant in the prior art. Through reasonable control of drainage paths of dirty water, initial rainwater and middle and later rainwater, dirty water is stopped to an on-line treatment facility to the greatest extent, and cleaner water is drained to a natural water body.

5) The method has the advantages that rainwater or confluent sewage is treated on line through an on-line treatment facility, the problem that the on-line interception rate of the interception pipe is limited can be effectively solved, and when rainfall is uniform and rainfall history is longer, the method has more obvious advantages, and particulate matters discharged into the rainwater of the natural water body are removed and intercepted to the greatest extent, so that the natural water body is protected.

Drawings

FIG. 1 is a schematic view showing a structure of a drainage system according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view showing the structure of a drainage system according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of a drainage system according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view showing the structure of a drainage system according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view showing the structure of a drainage system according to a preferred embodiment of the present invention;

wherein, 1-water inlet; 2-a first water outlet; 3-a second water outlet; 4-a third water outlet; 5-a first water conservancy switch; 6-a third water conservancy switch; 7-a fourth water conservancy switch; 8-splitting the well body; 9-an on-line treatment facility; 31-a regulation facility; 32-a sixth water conservancy switch; 51-an integrated treatment facility.

Detailed Description

[ drainage System ]

A first aspect of the present invention provides a drainage system, the drainage system comprising a diverter well, the diverter well comprising a diverter well body and four openings provided in the diverter well body, being a water inlet, a first water outlet, a second water outlet and a third water outlet, respectively;

In a preferred embodiment of the invention, the drainage system further comprises a control system comprising a monitoring device and a control unit in signal connection therewith; the control unit is in signal connection with the first hydraulic switch, the third hydraulic switch and the fourth hydraulic switch; the monitoring device is used for monitoring signals and transmitting the monitored signals to the control unit, and the control unit controls the opening degrees of the first hydraulic switch, the third hydraulic switch and the fourth hydraulic switch according to the received signals.

In a preferred embodiment of the invention, the inlet end of the in-line treatment facility is connected to the second water outlet via an in-line treatment pipe.

In a preferred embodiment of the present invention, the drainage system further comprises a sewage interception tube; the first water outlet is connected with a sewage treatment plant through a sewage interception pipe.

In a preferred embodiment of the present invention, the drainage system further comprises a water outlet pipe; the third water outlet is connected with a pipeline leading to the natural water body through a water outlet pipe.

In a preferred embodiment of the invention, the monitoring device comprises a device for monitoring the water level (such as a liquid level sensor, a liquid level meter, a liquid level switch and the like) and a device for monitoring the water quality (such as a water quality detector, an online COD monitor, an online TSS monitor, an online BOD monitor, an online TN monitor, an online TP monitor and an online NH) ₃ -N monitor, on-line ammonia nitrogen monitor, electrode, conductivity meter, etc.), means for monitoring the total amount of water (for example, it may be an electric hoist with metering function, etc.), means for monitoring rainfall (such as a rain gauge, etc.), means for monitoring time (such as a timer, etc.).

In a preferred embodiment of the invention, the monitoring device may be located inside the diverter well or outside the diverter well depending on the type of requirements. For example, the device for monitoring the water 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, the device for monitoring the total water body is arranged on a water switch in the well body of the diversion well, and the device for monitoring the time is arranged in the well body of the diversion well or outside the well body of the diversion well.

In a preferred embodiment of the present invention, it will be understood by those skilled in the art that the shapes and opening sizes of the water inlet, the first water outlet, the second water outlet and the third water outlet are not particularly limited, and may be matched with the shape of the pipe or gallery connected thereto or the shape of the water conservancy switch provided thereto. For example, the water inlet, the first water outlet, the second water outlet and the third water outlet are circular in shape.

In a preferred embodiment of the present invention, it will be understood by those skilled in the art that the arrangement order and arrangement manner of the water inlet, the first water outlet, the second water outlet and the third water outlet in the well body of the diversion well are not limited, and the relative positions of the water inlet, the first water outlet, the second water outlet and the third water outlet may be set reasonably according to the area and the topography of the area where the diversion well is disposed. For example, the water inlet, the first water outlet, the second water outlet and the third water outlet are arranged on the side wall of the well body of the diversion well.

When the water inlet, the first water outlet, the second water outlet and the third water outlet are arranged on the side wall of the well body of the diversion well, as will be understood by those skilled in the art, the heights of the bottoms of the water inlet, the first water outlet, the second water outlet and the third water outlet from the bottom of the diversion well are not particularly limited, for example, a pipeline connected with the water inlet is positioned in a high topography, and the water inlet can be arranged at any position on the side wall of the well body of the diversion well; the pipeline connected with the first water outlet, the second water outlet and the third water outlet is positioned at a low-grade position, and the first water outlet, the second water outlet and the third water outlet are arranged at the position, close to the bottom of the well body, of the well body of the diversion well, on the side wall of the well body of the diversion well. The purpose of this is to better flow downstream so that water does not build up in the diverter well volume.

In a preferred embodiment of the present invention, those skilled in the art will understand that the shape of the well body of the diverter well is not particularly limited, and reasonable drainage of the water body may be achieved, for example, the shape of the well body of the diverter well is square or circular.

In a preferred embodiment of the present invention, it will be understood by those skilled in the art that the number and arrangement of the in-line processing facilities in the system are not particularly limited, and may be a plurality of in-line processing facilities connected in series or in parallel; the specific arrangement mode can be reasonably arranged according to the area of the area using the system. The on-line treatment facility may be an on-line treatment facility known in the 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, or the like.

In a preferred embodiment of the present invention, the first hydraulic switch, the third hydraulic switch and the fourth hydraulic switch are each independently selected from one of valves (ball valve, gate valve, knife gate valve, butterfly valve, elevation type rubber plate shut-off check valve, etc.), gates (upper open gate, lower open gate, etc.), weirs (upper open weirs, lower open weirs, rotary weirs, etc.), flaps (shut-off flaps, etc.).

In a preferred embodiment of the invention, the first hydraulic switch may perform a maximum flow restriction function, i.e. to ensure that the flow through the first hydraulic switch does not exceed a set flow value.

In a preferred embodiment of the invention, the third hydraulic switch may perform a maximum flow restriction function, i.e. to ensure that the flow through the third hydraulic switch does not exceed a set flow value.

In a preferred embodiment of the invention, the drainage system further comprises a regulation facility; the storage regulation facility is arranged on the water outlet pipe or on a branch which is separated from the water outlet pipe.

When the regulation facility is arranged on the water outlet pipe branch, a sixth water conservancy switch is arranged on the water outlet pipe pipeline and at the downstream end of the branching position of the water outlet pipe branch. The sixth water conservancy switch is connected with the control unit in a signal mode, and the control unit controls the opening of the sixth water conservancy switch according to the received signal.

When the capacity of the regulation facility reaches the upper accommodation limit, water flows into the downstream end of the water outlet pipe from the outlet end of the regulation facility.

When the regulation facility is arranged on the branch of the water outlet pipe; the flow direction of the water body is adjusted by adjusting the opening of the sixth water conservancy switch; when the sixth water conservancy switch is in an on state, part of water flows through the water outlet pipe and is directly discharged to a pipeline leading to natural water, and part of water flows through a branch arranged beside the water outlet pipe and enters the regulation and storage facility for temporary storage; when the sixth water conservancy switch is in a cut-off state, all water flows through the branch to enter the regulation facility for temporary storage; when the capacity of the regulation facility reaches the upper limit of accommodation, all water flows through the water outlet pipe and is directly discharged to a pipeline leading to the natural water body.

In a preferred embodiment of the present invention, when the drainage system includes the above-mentioned regulation facility, it may further include an integrated treatment facility; the integrated treatment facility is connected to an outlet end of the regulation facility, and the integrated treatment facility can treat the water body stored in the regulation facility.

In a preferred embodiment of the present invention, it will be understood by those skilled in the art that the number and arrangement of the storage facilities in the drainage system are not particularly limited, and may be reasonably arranged according to the area of the area where the system is used, for example, a plurality of storage facilities may be connected in series or in parallel. The regulation facility may be a regulation facility known in the art, including, for example, a regulation tank, a regulation box culvert, a deep tunnel, a shallow tunnel, or the like.

In a preferred embodiment of the present invention, it will be understood by those skilled in the art that the number and arrangement of the integrated treatment facilities in the system are not particularly limited, and may be a plurality of integrated treatment facilities connected in series or parallel; the specific arrangement mode can be reasonably arranged according to the area of the area using the system. The integrated treatment facility may be an integrated treatment facility known in the art, including for example an integrated sewage treatment station or the like.

In a preferred embodiment of the present invention, the sixth hydraulic switch is selected from one of a valve (ball valve, gate valve, knife gate valve, butterfly valve, elevation rubber plate shutoff check valve, etc.), a gate (upper open gate, lower open gate, etc.), a weir gate (upper open weir gate, lower open weir gate, rotary weir gate, etc.), a flap gate (shutoff flap gate, etc.).

In a preferred embodiment of the present invention, the sixth hydraulic switch may implement a maximum flow restriction function, i.e. to ensure that the flow through the sixth hydraulic switch does not exceed a set flow value.

[ drainage control method ]

[ Water level method ]

A second aspect of the present invention provides a drainage control method controlled by a water level method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water body liquid level and is arranged in a well body of a diversion well, and a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

1a) Water enters the diversion well from the water inlet, and the water level height H in the well body of the diversion well is monitored in real time through a device for monitoring the water level;

2a) When H is smaller than H1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state;

3a) When H1 is less than or equal to H2, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state;

4a) When H is more than or equal to H2, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state.

[ Water quality method ]

The third aspect of the invention provides a drainage control method controlled by a water quality method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water quality of a water body and is arranged in a well body of a diversion well, and a standard value C1 of pollutant concentration and an excessive standard value C2 of pollutant concentration are set in a control unit of the control system; the method comprises the following steps:

1b) The water body enters the diversion well from the water inlet, and the water quality C of the water body in the well is monitored in real time through a device for monitoring the water quality of the water body;

2b) When C is more than or equal to C2, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state;

3b) When C2 is more than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state;

4b) When C < C1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in an open state.

[ Water level-Water quality method ]

A fourth aspect of the present invention provides a drainage control method controlled by a water level-water quality method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water level of a water body and a device for monitoring the water quality of the water body, and the monitoring device and the device are both arranged in a well body of a diversion well, and a warning water level H2 and a pollutant concentration standard value C1 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

1c) The water enters the diversion well from the water inlet, the water level height H in the well body of the diversion well is monitored in real time through a device for monitoring the water level, and the water quality C in the well is monitored in real time through a device for monitoring the water quality of the water;

2c) When H is smaller than H2, if C is larger than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; if C is smaller than C1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

3c) When H is more than or equal to H2, if C is more than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; if C is less than C1, the first water conservancy switch is in an off state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state.

[ Total amount-Water level method ]

A fifth aspect of the present invention provides a drainage control method controlled by a total amount-water level method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the total amount of water and is arranged on a first water switch in a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring the water level and is arranged in the well body of the diversion well, and a control unit of the control system is provided with a standard total amount of initial rain Q1 required to be intercepted by the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well; the method comprises the following steps:

1e) In rainy days, water enters the diversion well from the water inlet, the water level height H in the diversion well is monitored in real time through a device for monitoring the water level, and the total water quantity Q passing through the first water conservancy switch is monitored in real time through a device for monitoring the total water quantity;

2e) When H is smaller than H1, if Q is smaller than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; if Q is more than or equal to Q1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

3e) When H1 is less than or equal to H2, if Q is less than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; if Q is more than or equal to Q1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

4e) When H is more than or equal to H2, if Q is less than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; if Q is more than or equal to Q1, the first water conservancy switch is in an off state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state.

In a preferred embodiment of the invention, the method further comprises the steps of:

5e) When sunny days, the water body enters the diversion well from the water inlet, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state.

[ rainfall-Water level method ]

A sixth aspect of the present invention provides a drainage control method controlled by a rainfall-water level method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring rainfall and is arranged outside a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring water body liquid level and is arranged in the well body of the diversion well, and a control unit of the control system is provided with a standard initial rainfall L1 required to be intercepted by the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well; the method comprises the following steps:

1g) The water enters the diversion well from the water inlet, and the initial rain quantity L is monitored in real time through a device for monitoring the rain quantity;

2g) When l=0, on a sunny day, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state;

3g) When L is more than 0, in rainy days, monitoring the water level height H in the well body of the diversion well in real time through a device for monitoring the water level;

4g) When H < H1, if 0< L1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

5g) When H1 is less than or equal to H2, if 0< L1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an off state; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

6g) When H is more than or equal to H2, if 0< L1, the first hydraulic switch is in an on state, the third hydraulic switch is in an on state, and the fourth hydraulic switch is in an on state; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in an open state.

[ time-Water level method ]

A seventh aspect of the present invention provides a drainage control method controlled by a time-water level method, the drainage control method is based on the drainage system, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring time and is arranged in or out of a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring water body liquid level and is arranged in the well body of the diversion well, and a standard time T1, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

1i) When the water enters the diversion well from the water inlet on sunny days, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state;

2i) In rainy days, water enters the diversion well from the water inlet, the water level height H in the diversion well is monitored in real time through a device for monitoring the water level, and the rainfall time T is monitored in real time through a device for monitoring the time;

3i) When H is smaller than H1, if T is smaller than T1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; if T is more than or equal to T1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

4i) When H1 is less than or equal to H2, if T is less than T1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; if T is more than or equal to T1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state;

5i) When H is more than or equal to H2, if T is less than T1, the first hydraulic switch is in an on state, the third hydraulic switch is in an on state, and the fourth hydraulic switch is in an on state; if T is more than or equal to T1, the first water conservancy switch is in an off state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state.

[ concrete limitation of the above method ]

In a preferred embodiment of the present invention, when the drainage system comprises a regulation facility, the method further comprises the steps of:

when the fourth water conservancy switch is in an on state and the regulation facility is arranged on the water outlet pipeline, water flows through the water outlet pipe and flows into the regulation facility from the inlet end of the regulation facility for storage, and when the capacity of the regulation facility reaches the accommodating upper limit, water flows into the downstream end of the water outlet pipe from the outlet end of the regulation facility.

When the fourth water conservancy switch is in an on state and the regulation facility is arranged on the branch of the water outlet pipe, the flow direction of the water body is regulated by regulating the opening of the sixth water conservancy switch; when the sixth water conservancy switch is in an on state, part of water flows through the water outlet pipe and is directly discharged to a pipeline leading to natural water, and part of water flows through a branch arranged beside the water outlet pipe and enters the regulation and storage facility for temporary storage; when the sixth water conservancy switch is in a cut-off state, all water flows through a branch arranged beside the water outlet pipe to enter a regulation facility for temporary storage; when the capacity of the regulation facility reaches the upper limit of accommodation, all water flows through the water outlet pipe and is directly discharged to a pipeline leading to the natural water.

In a preferred embodiment of the present invention, when the drainage system includes a regulation facility and an integrated treatment facility, the method includes the steps of:

when the fourth water conservancy switch is in an on state and the regulation facility is arranged on the water outlet pipe pipeline, water flows through the water outlet pipe and flows into the regulation facility from the inlet end of the regulation facility for storage, and when the capacity of the regulation facility reaches the upper accommodation limit, water flows into the downstream end of the water outlet pipe from the outlet end of the regulation facility; meanwhile, the water body stored in the regulation facility is directly discharged to a pipeline leading to the natural water body after being treated by the integrated treatment facility.

When the fourth water conservancy switch is in an on state and the regulation facility is arranged on the branch of the water outlet pipe, the flow direction of the water body is regulated by regulating the opening of the sixth water conservancy switch; when the sixth water conservancy switch is in an on state, part of water flows through the water outlet pipe and is directly discharged to a pipeline leading to natural water, and part of water flows through a branch arranged beside the water outlet pipe and enters the regulation and storage facility for temporary storage; when the sixth water conservancy switch is in a cut-off state, all water flows through a branch arranged beside the water outlet pipe to enter a regulation facility for temporary storage; when the capacity of the regulation facility reaches the upper limit of accommodation, all water flows through the water outlet pipe and is directly discharged to a pipeline leading to the natural water; meanwhile, the water body stored in the regulation facility is directly discharged to a pipeline leading to the natural water body after being treated by the integrated treatment facility.

In a preferred embodiment of the invention, the standard water level H1 of the diverter well is set in the control unit of the control system according to the height of the diverter well corresponding to the average topography point in the water receiving area when there is a risk of water accumulation.

In a preferred embodiment of the invention, the warning water level H2 of the diverter well is set in the control unit of the control system according to the height of the diverter well corresponding to the lowest point of the topography in the water receiving area when there is a risk of water accumulation.

In a preferred embodiment of the invention, the device for monitoring the water body liquid level is a liquid level sensor, a liquid level meter, a liquid level switch and the like.

In a preferred embodiment of the present invention, the standard value of the pollutant concentration C1 is set in the control unit of the control system according to the environmental capacity of the natural water discharged and the quality of the water entering the diversion well.

In a preferred embodiment of the invention, the pollutant concentration superscalar C2 is set in the control unit based on the environmental capacity of the natural body of water being discharged and the quality of the body of water entering the diversion well and the highest pollutant concentration that can be treated by the on-line treatment facility.

In a preferred embodiment of the invention, the device for monitoring the water quality of the water body is a water quality detector, an online COD monitor, an online ammonia nitrogen monitor, an online TSS monitor, an online BOD monitor and an online NH ₃ -N monitor, on-line TP monitor, on-line TN monitor, electrode, conductivity meter, etc., which monitors the concentration of contaminants in the water in the well body of the shunt well, said contaminants comprising TSS, COD, BOD, NH ₃ -N, TN or TP.

In a preferred embodiment of the present invention, the water quality detector may detect the water quality of the water body by using an electrode method, a UV optical method, an optical scattering method, or the like.

In a preferred embodiment of the present invention, the environmental capacity of the natural water body discharged by the diversion well may be a natural water body such as a river, a lake or a sea; when the environment capacity of the natural water body is large (such as ocean), the pollutant concentration standard value C1 can be properly improved; when the environment capacity of the natural water body is smaller (such as a lake), the pollutant concentration standard value C1 can be properly reduced. When the water quality of the water body entering the diversion well is good, if the water body is middle-late-stage rainwater, the pollutant concentration standard value C1 can be properly reduced; when the water quality of the water body entering the diversion well is poor, such as domestic sewage and/or initial rainwater, the pollutant concentration standard value C1 can be properly improved. The purpose is to reduce pollution to natural water as little as possible.

In a preferred embodiment of the present invention, the above-mentioned setting principle is also applied to the pollutant concentration superscalar C2, and on the basis of this, the setting standard of the pollutant concentration superscalar C2 is also related to the upper concentration limit that can be processed by the on-line processing facility, and is generally not higher than the upper concentration limit that can be processed by the on-line processing facility.

In a preferred embodiment of the invention, a standard total amount of initial rain Q1 required to be intercepted by the diversion well is set in the control unit of the control system according to the total amount of initial rain required to be collected in the corresponding water receiving area of the diversion well.

In a preferred embodiment of the invention, the device for monitoring the total water body is selected from an electric hoist with a metering function.

In a preferred embodiment of the invention, a standard initial rain amount L1 of the diversion well to be intercepted is set in a control unit of the control system according to the millimeter number of the initial rain to be collected in the corresponding water receiving area of the diversion well.

In a preferred embodiment of the present invention, the device for monitoring rainfall is a rain gauge.

In a preferred embodiment of the present invention, the standard time T1 is set in the control unit of the control system according to the rainfall time of the initial rainwater and the time required for the entire initial rainwater to flow to the diversion well in the corresponding water receiving area of the diversion well.

In a preferred embodiment of the present invention, the means for monitoring the time is a timer.

In a preferred embodiment of the present invention, the first hydraulic switch, the third hydraulic switch and the sixth hydraulic switch may implement a maximum flow limiting function, and the on state of the first hydraulic switch, the third hydraulic switch and the sixth hydraulic switch means that a flow value passing through the hydraulic switch is smaller than or equal to a set maximum flow value, which may be implemented by adjusting an opening degree of the hydraulic switch by a control unit in a control system.

In a preferred embodiment of the present invention, the fourth hydraulic switch being in an on state means that the water body can flow to the natural water body through the hydraulic switch.

In a preferred embodiment of the present invention, the fourth hydraulic switch and the sixth hydraulic switch are in a shut-off state, which means that the opening degree of the hydraulic switch is adjusted, so that the water body is shut-off at the upstream end of the hydraulic switch, and cannot flow to the natural water body through the hydraulic switch.

In a preferred embodiment of the present invention, the water conservancy switch being in an off state means that the flow value of the water body passing through the water conservancy switch is zero.

The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications of the invention will become apparent to those skilled in the art upon reading the description herein, and such equivalents are intended to fall within the scope of the invention as defined by the appended claims.

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

Example 1

As shown in fig. 1 and 2, the present invention provides a drainage system, which comprises a diversion well, wherein the diversion well comprises a diversion well body 8 and four openings arranged in the diversion well body 8, namely a water inlet 1, a first water outlet 2, a second water outlet 3 and a third water outlet 4;

the drainage system further comprises a first water conservancy switch 5, a third water conservancy switch 6 and a fourth water conservancy switch 7; wherein, a first water conservancy switch 5 is arranged near the first water outlet 2 and is used for controlling the water passing through the first water outlet 2; a third water conservancy switch 6 is arranged near the second water outlet 3 and is used for controlling the water passing amount passing through the second water outlet 3; wherein a fourth water conservancy switch 7 is arranged near the third water outlet 4 and is used for controlling the water passing amount passing through the third water outlet 4;

the drainage system further comprises an on-line treatment facility 9, the on-line treatment facility 9 being connected to the second water outlet 3.

In a preferred embodiment of the present invention, the drainage system further comprises a sewage interception tube; the first water outlet is connected with a sewage treatment plant through a sewage interception pipe. The drainage system further comprises a water outlet pipe; the third water outlet is connected with a pipeline leading to the natural water body through a water outlet pipe.

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

Example 2

As shown in fig. 3-5, a drainage system with a sewage interception pipe and an on-line treatment facility, the drainage system comprising the drainage system of embodiment 1, the drainage system further comprising a storage facility 31; the storage regulation facility is arranged on the water outlet pipe or on a branch which is separated from the water outlet pipe.

When the regulation facility is arranged on the water outlet pipe branch, a sixth water conservancy switch 32 is arranged on the water outlet pipe pipeline and at the downstream end of the branching position of the water outlet pipe branch. The sixth water conservancy switch is connected with the control unit in a signal mode, and the control unit controls the opening of the sixth water conservancy switch according to the received signal.

In a preferred embodiment of the present invention, when the drainage system includes the above-mentioned regulation facility 31, it may further include an integrated treatment facility 51; the integrated treatment facility is connected to an outlet end of the regulation facility, and the integrated treatment facility can treat the water body stored in the regulation facility.

Example 3

The embodiment provides a drainage control method controlled by a water level method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water body liquid level and is arranged in a well body of a diversion well, and a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

2a) When H is smaller than H1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant;

3a) When H1 is less than or equal to H2, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; part of water body is discharged to a sewage treatment plant, and part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

4a) When H is more than or equal to H2, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; part of water body is discharged to a sewage treatment plant, part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of water body is directly discharged to the natural water body.

In a preferred embodiment of the invention, the standard water level H1 of the diverter well is set in the control unit of the control system according to the height of the diverter well corresponding to the average topography point in the water receiving area when there is a risk of water accumulation. And setting the warning water level H2 of the diversion well in a control unit of the control system according to the height of the lowest point of the topography in the corresponding water receiving area of the diversion well when the ponding risk occurs. The device for monitoring the water body liquid level is a liquid level sensor, a liquid level meter, a liquid level switch and the like.

Example 4

The embodiment provides a drainage control method controlled by a water quality method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water quality of a water body and is arranged in a well body of a diversion well, and a pollutant concentration standard value C1 and a pollutant concentration superscript value C2 are set in a control unit of the control system; the method comprises the following steps:

2b) When C is more than or equal to C2, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant;

3b) When C2 is more than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; part of water body is discharged to a sewage treatment plant, and part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

4b) When C < C1, the first water conservancy switch is in an off state, the third water conservancy switch is in an on state, the fourth water conservancy switch is in an on state, part of water is discharged to natural water or a pipeline connected with the natural water after being treated by an on-line treatment facility, and part of water is directly discharged to the natural water.

In a preferred embodiment of the present invention, the standard value of the pollutant concentration C1 is set in the control unit of the control system according to the environmental capacity of the natural water discharged and the quality of the water entering the diversion well. And setting a pollutant concentration superscript C2 in the control unit according to the environmental capacity of the discharged natural water body, the water quality of the water body entering the diversion well and the highest pollutant concentration which can be treated by the on-line treatment facility.

The device for monitoring the water quality of the water body is a water quality detector, an online COD monitor, an online ammonia nitrogen monitor, an online TSS monitor, an online BOD monitor and an online NH ₃ -N monitor, on-line TP monitor, on-line TN monitor, electrode, conductivity meter, etc., which monitors the concentration of contaminants in the water in the well body of the shunt well, said contaminants comprising TSS, COD, BOD, NH ₃ -N, TN or TP. The water quality detector can be used for detecting the water quality of the water body by adopting an electrode method, a UV optical method, an optical scattering method and the like.

Example 5

The embodiment provides a drainage control method controlled by a water level-water quality method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water level of a water body and a device for monitoring the water quality of the water body, and the monitoring device and the device are both arranged in a well body of a diversion well, and a warning water level H2 and a pollutant concentration standard value C1 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

2c) When H is smaller than H2, if C is larger than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant; if C is smaller than C1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

3c) When H is more than or equal to H2, if C is more than or equal to C1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; part of water body is discharged to a sewage treatment plant, part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of water body is directly discharged to the natural water body; if C is smaller than C1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in an open state; and part of the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of the water body is directly discharged to the natural water body.

In a preferred embodiment of the invention, the warning water level H2 of the diverter well is set in the control unit of the control system according to the height of the diverter well corresponding to the lowest point of the topography in the water receiving area when there is a risk of water accumulation. The device for monitoring the water body liquid level is a liquid level sensor, a liquid level meter, a liquid level switch and the like.

In a preferred embodiment of the present invention, the standard value of the pollutant concentration C1 is set in the control unit of the control system according to the environmental capacity of the natural water discharged and the quality of the water entering the diversion well. The device for monitoring the water quality of the water body is a water quality detector, an online COD monitor, an online ammonia nitrogen monitor, an online TSS monitor, an online BOD monitor and an online NH ₃ -N monitor, on-line TP monitor, on-line TN monitor, electrode, conductivity meter, etc., which monitor the water in the well body of the shunt wellConcentration of contaminants in the body, including TSS, COD, BOD, NH ₃ -N, TN or TP. The water quality detector can be used for detecting the water quality of the water body by adopting an electrode method, a UV optical method, an optical scattering method and the like.

Example 6

The embodiment provides a drainage control method controlled by a total amount-water level method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the total amount of water and is arranged on a first water switch in a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring the water level and is arranged in the well body of the diversion well, and a control unit of the control system is provided with a standard total amount of initial rain Q1 required to be intercepted by the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well; the method comprises the following steps:

2e) When H is smaller than H1, if Q is smaller than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant; if Q is more than or equal to Q1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

3e) When H1 is less than or equal to H2, if Q is less than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; part of water body is discharged to a sewage treatment plant, and part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility; if Q is more than or equal to Q1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

4e) When H is more than or equal to H2, if Q is less than Q1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; part of water body is discharged to a sewage treatment plant, part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of water body is directly discharged to the natural water body; if Q is more than or equal to Q1, the first water conservancy switch is in an off state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an on state; and part of the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of the water body is directly discharged to the natural water body.

5e) When the water enters the diversion well from the water inlet on sunny days, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state; the water body is discharged to a sewage treatment plant.

In a preferred embodiment of the invention, a standard total amount of initial rain Q1 required to be intercepted by the diversion well is set in the control unit of the control system according to the total amount of initial rain required to be collected in the corresponding water receiving area of the diversion well. The device for monitoring the total water body is selected from an electric hoist with a metering function.

Example 7

The embodiment provides a drainage control method controlled by a rainfall-water level method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring rainfall and is arranged outside a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring water body liquid level and is arranged in the well body of the diversion well, and a standard initial rainfall L1 required to be intercepted by the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

2g) When l=0, on a sunny day, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state; the water body is discharged to a sewage treatment plant;

4g) When H < H1, if 0< L1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

5g) When H1 is less than or equal to H2, if 0< L1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in an off state; part of water body is discharged to a sewage treatment plant, and part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

6g) When H is more than or equal to H2, if 0< L1, the first hydraulic switch is in an on state, the third hydraulic switch is in an on state, and the fourth hydraulic switch is in an on state; part of water body is discharged to a sewage treatment plant, part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of water body is directly discharged to the natural water body; if L is more than or equal to L1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in an open state; and part of the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of the water body is directly discharged to the natural water body.

In a preferred embodiment of the invention, a standard initial rain amount L1 of the diversion well to be intercepted is set in a control unit of the control system according to the millimeter number of the initial rain to be collected in the corresponding water receiving area of the diversion well. The device for monitoring the rainfall is a rain gauge.

Example 8

The embodiment provides a drainage control method controlled by a time-water level method, the drainage control method is based on the drainage system of the embodiment 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring time and is arranged in a well body or a well body of a diversion well, the monitoring device in the control system further comprises a device for monitoring water body liquid level and is arranged in the well body of the diversion well, and a standard time T1, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

1i) When the water enters the diversion well from the water inlet on sunny days, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in a cut-off state; the water body is discharged to a sewage treatment plant;

3i) When H is smaller than H1, if T is smaller than T1, the first water conservancy switch is in an on state, the third water conservancy switch is in an off state, and the fourth water conservancy switch is in an off state; the water body is discharged to a sewage treatment plant; if T is more than or equal to T1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

4i) When H1 is less than or equal to H2, if T is less than T1, the first water conservancy switch is in an on state, the third water conservancy switch is in an on state, and the fourth water conservancy switch is in a cut-off state; part of water body is discharged to a sewage treatment plant, and part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility; if T is more than or equal to T1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in a shut-off state; the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility;

5i) When H is more than or equal to H2, if T is less than T1, the first hydraulic switch is in an on state, the third hydraulic switch is in an on state, and the fourth hydraulic switch is in an on state; part of water body is discharged to a sewage treatment plant, part of water body is discharged to natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of water body is directly discharged to the natural water body; if T is more than or equal to T1, the first water conservancy switch is in a closed state, the third water conservancy switch is in an open state, and the fourth water conservancy switch is in an open state; and part of the water body is discharged to the natural water body or a pipeline connected with the natural water body after being treated by an on-line treatment facility, and part of the water body is directly discharged to the natural water body.

In a preferred embodiment of the present invention, the standard time T1 is set in the control unit of the control system according to the rainfall time of the initial rainwater and the time required for the entire initial rainwater to flow to the diversion well in the corresponding water receiving area of the diversion well. The device for monitoring the time is a timer.

Example 9

When the drainage system includes an on-line treatment facility, that is, the drainage system corresponding to embodiment 2, the drainage control methods of embodiments 3 to 8 described above are adopted, and further include the steps of:

when the fourth water conservancy switch is in an on state and the on-line treatment facility is arranged on the water outlet pipe line; the water body flows through the water outlet pipe and flows into the on-line treatment facility from the inlet end of the on-line treatment facility, and after being treated, flows into the downstream end of the water outlet pipe from the outlet end of the on-line treatment facility or is directly discharged to a pipeline leading to the natural water body.

When the fourth water conservancy switch is in an on state and the on-line treatment facility is arranged on the branch of the water outlet pipe, 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 an on state, part of water flows through the water outlet pipe and is directly discharged to a pipeline leading to the natural water, part of water flows through a branch arranged beside the water outlet pipe and enters the on-line treatment facility from the inlet end of the on-line treatment facility, and after treatment, the water flows into the downstream end of the water outlet pipe from the outlet end of the on-line treatment facility or is directly discharged to the pipeline leading to the natural water; when the seventh water conservancy switch is in a cut-off state, all water flows through a branch arranged beside the water outlet pipe and enters the online treatment facility from the inlet end of the online treatment facility, and after treatment, the water flows into the downstream end of the water outlet pipe from the outlet end of the online treatment facility or is directly discharged to a pipeline leading to natural water.

In the foregoing embodiments 3 to 12, the first hydraulic switch, the third hydraulic switch and the sixth hydraulic switch may implement a maximum flow restriction function, and the on state of the first hydraulic switch, the third hydraulic switch and the sixth hydraulic switch means that the flow value through the hydraulic switch is smaller than or equal to the set maximum flow value, which may be implemented by adjusting the opening of the hydraulic switch by a control unit in the control system.

In the above embodiments 3 to 12, the fourth hydraulic switch being in the on state means that the water body may flow to the natural water body through the hydraulic switch.

In the foregoing embodiments 3 to 12, the fourth hydraulic switch and the sixth hydraulic switch being in the shut-off state means that the opening degree of the hydraulic switch is adjusted, so that the water body is guaranteed to be shut off at the upstream end of the hydraulic switch, and cannot flow to the natural water body through the hydraulic switch.

In embodiments 3-12 above, the water conservancy switch being in the off state means that the flow value of the water body passing through the water conservancy switch is zero.

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, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The drainage system is characterized by comprising a diversion well, wherein the diversion well comprises a diversion well body and four openings which are respectively a water inlet, a first water outlet, a second water outlet and a third water outlet, and the four openings are arranged in the diversion well body;

The drainage system further comprises an online treatment facility, and the online treatment facility is connected with the second water outlet;

the drainage system also comprises a sewage interception pipe; the first water outlet is connected with a sewage treatment plant through a sewage interception pipe;

the drainage system further comprises a water outlet pipe; the third water outlet is connected with a pipeline leading to the natural water body through a water outlet pipe;

the drainage system also comprises a control system, wherein the control system comprises a monitoring device and a control unit connected with the monitoring device in a signal manner; the control unit is in signal connection with the first hydraulic switch, the third hydraulic switch and the fourth hydraulic switch; the monitoring device is used for monitoring signals and transmitting the monitored signals to the control unit, and the control unit controls the opening degrees of the first hydraulic switch, the third hydraulic switch and the fourth hydraulic switch according to the received signals; the drainage system further comprises a regulation facility; the storage regulation facility is arranged on the water outlet pipe line or on a branch line separated from the water outlet pipe line;

the online processing facilities are a plurality of online processing facilities connected in series or in parallel; the online treatment facility comprises a biological filter, an online treatment tank, a flocculation tank, an inclined plate sedimentation tank, a sand setting tank or an artificial wetland;

When the regulation facility is arranged on the water outlet pipe branch, a sixth water conservancy switch is arranged on the water outlet pipe pipeline and at the downstream end of the branching position of the water outlet pipe branch; the sixth water conservancy switch is connected with the control unit in a signal mode, and the control unit controls the opening of the sixth water conservancy switch according to the received signal.

2. The drainage system of claim 1, wherein the inlet end of the in-line treatment facility is connected to the second water outlet via an in-line treatment pipe.

3. The drainage system of claim 1 wherein the monitoring means comprises at least one of means for monitoring the level of the body of water, means for monitoring the quality of the body of water, means for monitoring the total amount of water, means for monitoring the amount of rain, and means for monitoring time.

4. A system according to claim 3, wherein the means for monitoring the level of the body of water is selected from a level sensor, a level gauge or a level switch; the device for monitoring the water quality of the water body is selected from a water quality detector, an online COD monitor, an online TSS monitor, an online BOD monitor, an online TN monitor, an online TP monitor and an online NH ₃ -an N monitor, an online ammonia nitrogen monitor, an electrode or a conductivity meter; the device for monitoring the total water body is selected from an electric hoist with a metering function; the device for monitoring the rainfall is selected from a rain gauge; the means for monitoring the time is selected from a timer.

5. The drainage system of claim 1, wherein the monitoring device is disposed in or out of the diverter well body according to type requirements, wherein the means for monitoring water level and the means for monitoring water quality are disposed in or out of the diverter well body, the means for monitoring rainfall is disposed out of the diverter well body, the means for monitoring total amount of water is disposed on a water switch in the diverter well body, and the means for monitoring time is disposed in or out of the diverter well body.

6. The drainage system of claim 1, wherein the first, third and fourth hydraulic switches are each independently selected from one of a valve, gate, slice gate, flap gate.

7. The drainage system of claim 6, wherein the valve is selected from one of a ball valve, a gate valve, a knife gate valve, a butterfly valve; the gate is selected from one of an upper open gate and a lower open gate; the weir gate is selected from one of an upper open type weir gate, a lower open type weir gate and a rotary type weir gate.

8. The drainage system of claim 1 wherein the first water switch performs a maximum flow restriction function that ensures that flow through the first water switch does not exceed a set flow value;

And/or the third water conservancy switch realizes the maximum current limiting function, namely, the flow passing through the third water conservancy switch is ensured not to exceed the set flow value.

9. The drainage system of claim 1, wherein when the drainage system comprises a regulation facility, it further comprises an integrated treatment facility; the integrated treatment facility is connected with the outlet end of the regulation facility, and the integrated treatment facility is used for treating the water body stored in the regulation facility.

10. The drainage system of claim 1, wherein the regulation facility is a plurality of regulation facilities connected in series or in parallel in the drainage system; the regulation facility comprises a regulation pool, a regulation box culvert and a deep tunnel or shallow tunnel.

11. The drainage system of claim 9, wherein the integrated treatment facility is a plurality of integrated treatment facilities in series or parallel; the integrated treatment facility includes an integrated sewage treatment station.

12. The drainage system of claim 1 wherein the sixth hydraulic switch is selected from one of a valve, gate, slice gate, flap gate.

13. The drainage system of claim 12, wherein the valve is selected from one of a ball valve, a gate valve, a knife gate valve, a butterfly valve; the gate is selected from one of an upper open gate and a lower open gate; the weir gate is selected from one of an upper open type weir gate, a lower open type weir gate and a rotary type weir gate.

14. The drainage system of claim 1 wherein the sixth hydraulic switch provides a maximum flow restriction that ensures that flow through the sixth hydraulic switch does not exceed a set flow value.

15. A water level method controlled drainage control method, characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water body liquid level and is arranged in a well body of a diversion well, and a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

16. The drainage control method according to claim 15, wherein a standard water level H1 of the diversion well is set in a control unit of the control system according to the height of the average topography point in the corresponding water receiving area of the diversion well when the risk of water accumulation occurs;

and/or setting the warning water level H2 of the diversion well in a control unit of the control system according to the height of the lowest point of the topography in the corresponding water receiving area of the diversion well when the water accumulation risk occurs;

and/or the device for monitoring the water body liquid level is a liquid level sensor, a liquid level meter and a liquid level switch.

17. A drainage control method controlled by a water quality method, which is characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water quality of a water body and is arranged in a well body of a diversion well, and a standard value C1 of pollutant concentration and an overscale value C2 of pollutant concentration are set in a control unit of the control system; the method comprises the following steps:

18. The drainage control method according to claim 17, wherein a pollutant concentration standard value C1 is set in a 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;

and/or setting a pollutant concentration superscript C2 in the control unit according to the environmental capacity of the discharged natural water body, the water quality of the water body entering the diversion well and the highest pollutant concentration which can be treated by the on-line treatment facility;

and/or the device for monitoring the water quality of the water body is a water quality detector, an online COD (chemical oxygen demand) monitor, an online ammonia nitrogen monitor, an online TSS (TSS) monitor, an online BOD (biochemical oxygen demand) monitor and an online NH (NH) monitor ₃ -N monitor, on-line TP monitor, on-line TN monitor, electrode, conductivity meter, which monitors the concentration of contaminants in the water in the well body of the shunt well, said contaminants comprising TSS, COD, BOD, NH ₃ -one or more of N, TN or TP;

and/or the water quality detector adopts an electrode method, a UV optical method and an optical scattering method to realize the detection of the water quality of the water body.

19. A drainage control method controlled by a water level-water quality method, which is characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the water level of a water body and a device for monitoring the water quality of the water body, and the monitoring device and the device are arranged in a well body of a diversion well, and a warning water level H2 and a pollutant concentration standard value C1 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

20. The drainage control method according to claim 19, wherein 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 topography in the corresponding water receiving area of the diversion well when the risk of water accumulation occurs;

and/or the device for monitoring the water body liquid level is a liquid level sensor, a liquid level meter and a liquid level switch;

and/or setting a pollutant concentration standard value C1 in a 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;

21. A drainage control method controlled by a total amount-water level method, which is characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring the total amount of water body and is arranged on a first water switch in a well body of a diversion well, the monitoring device in the control system also comprises a device for monitoring the water body liquid level and is arranged in the well body of the diversion well, and a control unit of the control system is provided with a standard total amount of initial rain Q1 required to be intercepted by the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well; the method comprises the following steps:

22. The drainage control method according to claim 21, characterized in that the method further comprises the step of:

23. The drainage control method according to claim 21, wherein a standard water level H1 of the diversion well is set in a control unit of the control system according to a height of an average topography point in a corresponding water receiving area of the diversion well when a risk of water accumulation occurs;

and/or setting the standard total amount of primary rain Q1 required to be intercepted by the diversion well in a control unit of the control system according to the total amount of primary rain required to be collected in the corresponding water receiving area of the diversion well;

and/or the device for monitoring the total water body is selected from an electric hoist with a metering function.

24. A drainage control method controlled by a rainfall-water level method, which is characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring rainfall and is arranged outside a well body of a diversion well, the monitoring device in the control system also comprises a device for monitoring the water body liquid level and is arranged in the well body of the diversion well, and a control unit of the control system is provided with a standard initial rainfall L1 of the diversion well, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well, wherein the standard initial rainfall L1 is required to be intercepted by the diversion well; the method comprises the following steps:

25. The drainage control method according to claim 24, wherein a standard water level H1 of the diversion well is set in a control unit of the control system according to a height of an average topography point in a corresponding water receiving area of the diversion well when a risk of water accumulation occurs;

and/or setting a standard initial rain amount L1 of the diversion well to be intercepted in a control unit of the control system according to the initial rain millimeter number required to be collected in the corresponding water receiving area of the diversion well;

and/or the device for monitoring the rainfall is a rain gauge.

26. A drainage control method controlled by a time-water level method, characterized in that the drainage control method is based on the drainage system of claim 1, the drainage system comprises a control system, a monitoring device in the control system comprises a device for monitoring time and is arranged in a well body of a diversion well or outside the well body of the diversion well, the monitoring device in the control system also comprises a device for monitoring the water body liquid level and is arranged in the well body of the diversion well, and a standard time T1, a standard water level H1 of the diversion well and a warning water level H2 of the diversion well are set in a control unit of the control system; the method comprises the following steps:

27. The drainage control method according to claim 26, wherein a standard water level H1 of the diversion well is set in a control unit of the control system according to a height of an average topography point in a corresponding water receiving area of the diversion well when a risk of water accumulation occurs;

and/or setting standard time T1 in a control unit of the control system according to the rainfall time of the initial rainwater and the time required for the total initial rainwater in the corresponding water receiving area of the diversion well to flow to the diversion well;

and/or, the device for monitoring the time is a timer.

28. The method of any one of claims 15-27, wherein when the drainage system comprises a regulation facility, the method further comprises the steps of:

when the fourth water conservancy switch is in an on state and the regulation facility is arranged on the water outlet pipe pipeline, water flows through the water outlet pipe and flows into the regulation facility from the inlet end of the regulation facility for storage, and when the capacity of the regulation facility reaches the upper accommodation limit, water flows into the downstream end of the water outlet pipe from the outlet end of the regulation facility;

29. The method of any one of claims 15-27, wherein when the drainage system includes a conditioning facility and an integrated treatment facility, the method comprises the steps of:

when the fourth water conservancy switch is in an on state and the regulation facility is arranged on the water outlet pipe pipeline, water flows through the water outlet pipe and flows into the regulation facility from the inlet end of the regulation facility for storage, and when the capacity of the regulation facility reaches the upper accommodation limit, water flows into the downstream end of the water outlet pipe from the outlet end of the regulation facility; meanwhile, the water body stored in the regulation facility is directly discharged to a pipeline leading to the natural water body after being treated by the integrated treatment facility;