Closure method of drainage system, drainage system, device and medium

Abstract

The invention discloses an intercepting method of a drainage system, the drainage system, a device and a medium, and the method comprises the steps: obtaining a total pollutant amount reduction target, the actual intercepting amount of an intercepting well, a first corresponding relation between the total pollutant amount reduction amount and a rainwater intercepting rate, and a second corresponding relation between the rainwater intercepting rate and the intercepting amount; the total pollutant amount reduction target represents the river entering amount of pollutants exceeding the river pollutant load amount; determining a target rainwater interception rate according to the total pollutant reduction target and the first corresponding relation; determining a target interception amount according to the target rainwater interception rate and a second corresponding relation; on the basis of the actual interception amount and the target interception amount, the opening and closing states of the interception opening and the water outlet are controlled, so that the flow of the confluent sewage intercepted to the sewage treatment plant and the flow of the confluent sewage discharged to the river channel are adjusted. Precise interception of polluted rainwater can be achieved, impact of runoff pollution on the water environment is effectively reduced, and the problem of water deterioration after raining is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to rainwater interception, and in particular to an interception method, a drainage system, a device and a medium for a drainage system. Background Art

[0002] Combined sewer systems are prone to overflow pollution on rainy days. In order to effectively control overflow pollution, they need to be renovated. Interception facilities are one of the key structures in combined sewer renovation. In the prior art, the opening and closing states of interception wells are often controlled by setting single parameters such as liquid level and water quality. However, due to the uncertainty of rainwater pollution load and water environment capacity, the single use of liquid level control indicators or water quality control indicators may cause excessive rainwater to be intercepted into the sewage system, causing overflow in front of the plant, reduced operating efficiency of the sewage treatment plant, or causing the overflow pollution load to exceed the water environment capacity, causing water body deterioration. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a drainage system interception method that can achieve accurate interception of polluted rainwater, effectively reduce the impact of runoff pollution on the water environment, and alleviate the problem of water body deterioration after rain.

[0004] The present invention also provides a drainage system, a control device for executing the interception method of the drainage system, and a computer-readable storage medium.

[0005] According to the interception method of the drainage system of the first aspect of the present invention, the drainage system comprises an interception well and a flow meter, the interception well has a water inlet, an interception port and a water outlet, the water inlet is used to collect the combined sewage of the target research basin, the interception port is used to connect to the sewage treatment plant, the water outlet is used to connect to the river, and the flow meter is used to detect the actual interception volume of the interception well; The interception method of the drainage system comprises: Obtaining a total pollutant reduction target for the target study basin, the actual interception volume, and a pre-stored first correspondence and a second correspondence, wherein the total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river, the first correspondence is a correspondence between the total pollutant reduction and the rainwater interception rate, and the second correspondence is a correspondence between the rainwater interception rate and the interception volume, and both the first correspondence and the second correspondence are obtained by simulation based on historical data of the target study basin; Determining a target rainwater interception rate according to the total pollutant reduction target and the first corresponding relationship; Determining a target interception amount according to the target rainwater interception rate and the second corresponding relationship; The opening and closing states of the interception port and the outlet are controlled based on the actual interception volume and the target interception volume to adjust the flow of the combined sewage intercepted to the sewage treatment plant and the flow of the combined sewage discharged to the river.

[0006] The interception method of the drainage system according to the embodiment of the present invention has at least the following beneficial effects: By using the historical data of the target study basin, we can simulate the first correspondence between the total pollutant reduction amount and the rainwater interception rate, as well as the second correspondence between the rainwater interception rate and the interception volume. By obtaining the total pollutant reduction target, the target rainwater interception rate can be determined according to the first correspondence, and the target interception volume can be determined according to the target rainwater interception rate and the second correspondence. Then, by comparing the actual interception volume of the interception well with the target interception volume, it can be determined whether the combined sewage should be intercepted and sent to the sewage treatment plant for treatment, or discharged into the river. Based on the pollutant load of the river, the rainwater interception rate is used as the pollution control target to determine the intercepted rainwater volume, so as to achieve precise interception of polluted rainwater, effectively reduce the impact of runoff pollution on the water environment, and alleviate problems such as water body deterioration after rain.

[0007] According to some embodiments of the present invention, the controlling the opening and closing states of the intercepting port and the water outlet based on the actual intercepting amount and the target intercepting amount includes: If the actual interception amount is less than the target interception amount, the interception port is controlled to be opened, and the outlet is controlled to be closed, so that the combined sewage is intercepted and sent to the sewage treatment plant for treatment; If the actual interception amount is greater than or equal to the target interception amount, the interception port is controlled to be closed, and the water outlet is controlled to be opened, so that the combined sewage is discharged into the river.

[0008] According to some embodiments of the present invention, the total amount of pollutant reduction target is obtained by the following steps: Obtaining the annual rainfall runoff pollution load, annual dry runoff sewage pollution load and water environment capacity of the target study basin, wherein the annual rainfall runoff pollution load and the annual dry runoff sewage pollution load are obtained based on historical data of the target study basin, and the water environment capacity represents the pollutant load of the river; Add the annual rainfall runoff pollution load and the annual dry runoff sewage pollution load to obtain the annual overflow pollution total; The total annual overflow pollution amount is subtracted from the water environment capacity to obtain the total pollutant reduction target.

[0009] According to some embodiments of the present invention, the constraint formula of the water environment capacity is: ; in, Mis the water environment capacity, is the pollutant concentration limit value corresponding to the preset water quality target of the river, is the actual pollutant concentration value of the river, is the comprehensive degradation coefficient of pollutants, x is the longitudinal distance of the river channel, is the preset flow rate of the river, is the discharge flow of the combined sewage at the outlet of the river, u It is the average flow velocity of the river water in the river channel under the preset flow rate.

[0010] According to some embodiments of the present invention, the constraint formula of the annual rainfall runoff pollution load is: ; in, is the annual rainfall runoff pollution load, The number of rainfall events in a typical rainfall year in the target study basin, The typical rainfall year for the target basin is the first i The average concentration of pollutants in each rainfall event, The typical rainfall year for the target basin is the first i The surface runoff coefficient of the rainfall, The typical rainfall year for the target basin is the first i The catchment area of ​​each rainfall event, The typical rainfall year for the target basin is the first i The amount of rainfall during a rainfall event.

[0011] According to some embodiments of the present invention, the constraint formula for the annual dry stream sewage pollution load is: ; in, is the annual dry stream sewage pollution load, is the preset dry season flow rate of the drainage system, The default water quality.

[0012] According to a drainage system of a second aspect of the present invention, the drainage system comprises: An interception well, comprising an inlet, an interception port and an outlet, wherein the inlet is used to collect the combined sewage of the target research basin, the interception port is used to connect to the sewage treatment plant, and the outlet is used to connect to the river; A flow meter, used to detect the actual interception volume of the interception well; A control device is electrically connected to the interception well, and is used to obtain the total pollutant reduction target of the target research basin, the actual interception volume, and a pre-stored first correspondence and a second correspondence, wherein the total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river channel, the first correspondence is the correspondence between the total pollutant reduction amount and the rainwater interception rate, and the second correspondence is the correspondence between the rainwater interception rate and the interception volume, and the first correspondence and the second correspondence are both simulated based on historical data of the target research basin; determine the target rainwater interception rate based on the total pollutant reduction target and the first correspondence; determine the target interception volume based on the target rainwater interception rate and the second correspondence; and control the opening and closing states of the interception port and the outlet based on the actual interception volume and the target interception volume to adjust the flow of the combined sewage intercepted to the sewage treatment plant and the flow of the combined sewage discharged to the river channel.

[0013] The drainage system according to the embodiment of the present invention has at least the following beneficial effects: By using the historical data of the target study basin, we can simulate the first correspondence between the total pollutant reduction amount and the rainwater interception rate, as well as the second correspondence between the rainwater interception rate and the interception volume. By obtaining the total pollutant reduction target, the target rainwater interception rate can be determined according to the first correspondence, and the target interception volume can be determined according to the target rainwater interception rate and the second correspondence. Then, by comparing the actual interception volume of the interception well with the target interception volume, it can be determined whether the combined sewage should be intercepted and sent to the sewage treatment plant for treatment, or discharged into the river. Based on the pollutant load of the river, the rainwater interception rate is used as the pollution control target to determine the intercepted rainwater volume, so as to achieve precise interception of polluted rainwater, effectively reduce the impact of runoff pollution on the water environment, and alleviate problems such as water body deterioration after rain.

[0014] According to some embodiments of the present invention, the drainage system further comprises a regulating reservoir electrically connected to the control device, and an inlet of the regulating reservoir is connected to the water outlet and a sewage discharge outlet of the river.

[0015] The control device according to the third aspect of the present invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the interception method for the drainage system as described in the first aspect of the present invention when executing the computer program. Since the control device adopts all the technical solutions of the interception method for the drainage system of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment.

[0016] The computer-readable storage medium according to the fourth aspect of the present invention stores computer-executable instructions, and the computer-executable instructions are used to execute the interception method of the drainage system as described in the first aspect of the present invention. Since the computer-readable storage medium adopts all the technical solutions of the interception method of the drainage system of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment.

[0017] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 The present invention is a flowchart of a method for intercepting flow in a drainage system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0023] The following will be combined Figure 1 The interception method of the drainage system according to the embodiment of the present invention is described clearly and completely. Obviously, the embodiment described below is only a part of the embodiments of the present invention, not all of the embodiments.

[0024] refer to Figure 1 , Figure 1 The present invention is a flowchart of a method for intercepting flow in a drainage system according to an embodiment of the present invention.

[0025] According to the interception method of the drainage system of the first aspect of the present invention, the drainage system includes an interception well and a flow meter, the interception well has a water inlet, an interception port and a water outlet, the water inlet is used to collect the combined sewage of the target research basin, the interception port is used to connect to the sewage treatment plant, the water outlet is used to connect to the river, and the flow meter is used to detect the actual interception volume of the interception well; Interception methods for drainage systems include: Obtaining the total pollutant reduction target, actual interception volume, and pre-stored first and second correspondences of the target study basin, wherein the total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river channel, the first correspondence is the correspondence between the total pollutant reduction and the rainwater interception rate, and the second correspondence is the correspondence between the rainwater interception rate and the interception volume, and both the first and second correspondences are simulated based on historical data of the target study basin; Determine the target rainwater interception rate based on the total pollutant reduction target and the first correspondence relationship; Determine the target interception volume according to the target rainwater interception rate and the second corresponding relationship; The opening and closing status of the interception port and the outlet are controlled based on the actual interception volume and the target interception volume to adjust the flow of combined sewage intercepted to the sewage treatment plant and the flow of combined sewage discharged into the river.

[0026] It can be understood that the total amount of pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river, indicating that the amount of pollutants entering the river that exceeds the pollutant load of the river needs to be intercepted and diverted to the sewage treatment plant for treatment to avoid excessive pollutants being discharged into the river, causing the deterioration of the river water body. The first correspondence and the second correspondence are both simulated based on the historical data of the target research basin, representing the empirical values ​​of different rainwater interception rates corresponding to different total amount of pollutant reductions, and the empirical values ​​of different interception volumes corresponding to different rainwater interception rates. The embodiment of the present invention takes the pollutant load of the river as the basis, and uses the rainwater interception rate as the pollution control target to determine the intercepted rainwater volume, thereby achieving precise interception of polluted rainwater, which can effectively reduce the impact of runoff pollution on the water environment and alleviate the problem of water body deterioration after rain.

[0027] The constraint formula of the second corresponding relationship is: ;Formula (1) in, To intercept the flow, is the intercepted rainwater volume corresponding to the designed rainwater interception rate, is the catchment area of ​​rainfall, It is the sewage interception volume in the dry season.

[0028] The constraint formula for rainwater interception rate and intercepted rainwater volume is: ;Formula (2) Where, e is the rainwater interception rate, The accumulated intercepted rainfall in a typical rainfall year for the target study basin, The total annual rainfall in a typical rainfall year for the target study basin.

[0029] The typical rainfall year can be determined by the following method: based on the rainfall data of the target study basin in the past 30 years, the year with annual rainfall, annual rainfall frequency and annual rainfall days close to the average value is regarded as a typical rainfall year.

[0030] It should be noted that the unit of intercepted rainwater is mm. If the designed rainwater interception rate is 60%, the intercepted rainwater volume corresponding to this designed rainwater interception rate is 10 mm rainfall. However, the interception volume should be calculated as volume, which needs to be multiplied by the catchment area to get the volume of intercepted rainwater, that is, the interception volume.

[0031] The catchment area of ​​rainfall is a fixed value, which is obtained based on the basic data of the target research basin. The sewage interception volume in the dry season can be obtained by flow meter detection in the dry season.

[0032] In some embodiments of the present invention, the opening and closing states of the interception port and the water outlet are controlled based on the actual interception volume and the target interception volume, including: If the actual interception volume is less than the target interception volume, the interception port is controlled to be opened and the outlet is controlled to be closed, so that the combined sewage is intercepted and sent to the sewage treatment plant for treatment; If the actual interception volume is greater than or equal to the target interception volume, the interception port is controlled to be closed and the outlet is controlled to be opened so that the combined sewage can be discharged into the river.

[0033] It can be understood that if the actual interception volume is less than the target interception volume, it means that the combined sewage intercepted to the sewage treatment plant is too little, and the combined sewage discharged into the river is too much, which may cause excessive pollutants to be discharged into the river, causing the water body of the river to deteriorate. Therefore, it is necessary to control the opening of the interception port and the closing of the water outlet to intercept the combined sewage to the sewage treatment plant for treatment; if the actual interception volume is greater than or equal to the target interception volume, it means that the combined sewage intercepted to the sewage treatment plant is too little, and the combined sewage discharged into the river is too little, which may cause overflow in front of the plant, reduced operating efficiency of the sewage treatment plant and other problems. Therefore, it is necessary to control the closing of the interception port and the opening of the water outlet to allow the combined sewage to be discharged into the river.

[0034] The interception well controls the opening and closing status of the interception port and the outlet through the interception port water volume control device. When the interception port water volume control device is turned on, the interception port is opened and the outlet is closed; when the interception port water volume control device is closed, the interception port is closed and the outlet is opened.

[0035] It should be noted that the specific structure of the intercepting well is not specifically limited here and can be selected according to actual needs.

[0036] In some embodiments of the present invention, the total amount of pollutant reduction target is obtained by the following steps: Obtain the annual rainfall runoff pollution load, annual dry runoff sewage pollution load and water environment capacity of the target study basin. The annual rainfall runoff pollution load and annual dry runoff sewage pollution load are obtained based on the historical data of the target study basin. The water environment capacity represents the pollutant load of the river. The annual rainfall runoff pollution load and the annual dry runoff sewage pollution load are added together to obtain the total annual overflow pollution; Subtract the water environment capacity from the total annual overflow pollution to obtain the total pollutant reduction target.

[0037] In some embodiments of the present invention, the constraint formula of water environment capacity is: ;Formula (3) in, M is the water environment capacity (g / s), is the pollutant concentration limit value (mg / L) corresponding to the preset water quality target of the river, is the actual pollutant concentration in the river (mg / L), is the comprehensive degradation coefficient of pollutants ( ), x is the longitudinal distance of the river channel (m), is the preset flow rate of the river ( / s), is the discharge flow of combined sewage at the river outlet ( / s), u It is the average flow velocity of the river water in the river channel under the preset flow rate (m / s).

[0038] The discharge flow of combined sewage at the outlet of the river can be detected by installing a flow meter at the sewage outlet of the river.

[0039] In some embodiments of the present invention, the constraint formula for annual rainfall runoff pollution load is: ;Formula (4) in, is the annual rainfall runoff pollution load (g), The number of rainfall events in a typical rainfall year in the target basin is The typical rainfall year in the target basin is the first i Average concentration of pollutants in each rainfall (mg / L), The typical rainfall year in the target basin is the first i The surface runoff coefficient of the rainfall, The typical rainfall year in the target basin is the first i The catchment area of ​​each rainfall event ( ), The typical rainfall year in the target basin is the first i The amount of rainfall in this rainfall event (mm).

[0040] The constraint formula is: ;Formula (5) in, is the average concentration of pollutants in the rainfall runoff (mg / L), M is the total pollutant emission of the rainfall runoff (g), V is the total runoff volume of the rainfall runoff ( ), For the rainfall runoff t The instantaneous mass concentration of pollutants at time (mg / L), For the rainfall runoff t The runoff volume at / s), T is the total duration of the rainfall event (s), Rainfall for this event j Pollutant mass concentration in runoff during the period (mg / L), Rainfall for this event j The runoff volume for the period ( ), n is the number of rainfall segments in this event.

[0041] It should be noted that the pollutants mentioned above refer to a certain pollutant or a combination of multiple pollutants, and the specific categories are not limited here.

[0042] In some embodiments of the present invention, the constraint formula for the annual dry stream sewage pollution load is: ;Formula (6) in, is the annual dry stream sewage pollution load (g / s), is the preset dry season flow rate of the drainage system (L / s), is the preset water quality (g / L).

[0043] According to the interception method of the drainage system of the embodiment of the present invention, the first corresponding relationship between the total pollutant reduction amount and the rainwater interception rate, and the second corresponding relationship between the rainwater interception rate and the interception volume can be simulated through the historical data of the target research basin. By obtaining the total pollutant reduction target, the target rainwater interception rate can be determined according to the first corresponding relationship, and the target interception volume can be determined according to the target rainwater interception rate and the second corresponding relationship. Then, by comparing the actual interception volume of the interception well with the target interception volume, it can be determined whether the combined sewage should be intercepted and sent to the sewage treatment plant for treatment, or can be discharged into the river. Based on the pollutant load of the river, the rainwater interception rate is used as a pollution control target to determine the intercepted rainwater volume, thereby achieving precise interception of polluted rainwater, effectively reducing the impact of runoff pollution on the water environment, and alleviating problems such as the deterioration of water bodies after rain.

[0044] According to the drainage system of the second embodiment of the present invention, the drainage system includes an intercepting well, a flow meter and a control device.

[0045] The interception well has an inlet, an interception port and an outlet. The inlet is used to collect the combined sewage of the target research basin, the interception port is used to connect to the sewage treatment plant, and the outlet is used to connect to the river; Flow meter, used to detect the actual interception volume of the interception well; A control device is electrically connected to the interception well, and is used to obtain a total pollutant reduction target, an actual interception volume, and a pre-stored first correspondence and a second correspondence of a target research basin. The total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river channel. The first correspondence is the correspondence between the total pollutant reduction and the rainwater interception rate, and the second correspondence is the correspondence between the rainwater interception rate and the interception volume. The first correspondence and the second correspondence are both simulated based on historical data of the target research basin; the target rainwater interception rate is determined based on the total pollutant reduction target and the first correspondence; the target interception volume is determined based on the target rainwater interception rate and the second correspondence; and the opening and closing states of the interception port and the outlet are controlled based on the actual interception volume and the target interception volume to adjust the flow of combined sewage intercepted to the sewage treatment plant and the flow of combined sewage discharged to the river channel.

[0046] According to the drainage system of the embodiment of the present invention, the first correspondence between the total pollutant reduction amount and the rainwater interception rate, and the second correspondence between the rainwater interception rate and the interception volume can be simulated through the historical data of the target research basin. By obtaining the total pollutant reduction target, the target rainwater interception rate can be determined according to the first correspondence, and the target interception volume can be determined according to the target rainwater interception rate and the second correspondence. Then, by comparing the actual interception volume of the interception well with the target interception volume, it can be determined whether the combined sewage should be intercepted and sent to the sewage treatment plant for treatment, or can be discharged into the river. Based on the pollutant load of the river, the rainwater interception rate is used as a pollution control target to determine the intercepted rainwater volume, thereby achieving precise interception of polluted rainwater, effectively reducing the impact of runoff pollution on the water environment, and alleviating problems such as water body deterioration after rain.

[0047] Since the drainage system adopts all the technical solutions of the interception method of the drainage system in the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0048] In some embodiments of the present invention, the drainage system further includes a regulating reservoir electrically connected to the control device, and an inlet of the regulating reservoir is connected to a water outlet and a sewage discharge outlet of a river.

[0049] If the actual interception volume is greater than or equal to the target interception volume, it means that the water quality is good at this time. The interception port is controlled to be closed, the outlet is controlled to be opened, and the inlet of the regulating reservoir is controlled to be opened, so that rainwater (i.e., combined sewage) can flow into the regulating reservoir for storage. The rainwater stored in the regulating reservoir can be discharged after being treated by filtering and other methods, and can be used for green space irrigation and other purposes, realizing rainwater resource utilization. After the water level of the regulating reservoir reaches the designed liquid level, the inlet of the regulating reservoir is controlled to be closed so that the rainwater can be directly discharged into the river.

[0050] In addition, an embodiment of the present invention further provides a control device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor and the memory may be connected via a bus or other means.

[0051] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0052] The non-transitory software program and instructions required to implement the interception method of the drainage system in the above embodiment are stored in the memory, and when executed by the processor, the interception method of the drainage system in the above embodiment is executed.

[0053] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] In addition, an embodiment of the present invention also provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are executed by a processor or controller, for example, by the processor of the above embodiment, so that the above processor can execute the interception method of the drainage system in the above embodiment.

[0055] It will be appreciated by those skilled in the art that all or some of the steps and systems in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0056] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A method for intercepting flow in a drainage system, characterized in that: The drainage system includes an intercepting well and a flow meter, wherein the intercepting well has a water inlet, an intercepting port and a water outlet, wherein the water inlet is used to collect the combined sewage of the target research basin, the intercepting port is used to connect to the sewage treatment plant, the water outlet is used to connect to the river, and the flow meter is used to detect the actual interception volume of the intercepting port; The interception method of the drainage system comprises: Obtaining a total pollutant reduction target for the target study basin, the actual interception volume, and a pre-stored first correspondence and a second correspondence, wherein the total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river, the first correspondence is a correspondence between the total pollutant reduction and the rainwater interception rate, and the second correspondence is a correspondence between the rainwater interception rate and the interception volume, and both the first correspondence and the second correspondence are obtained by simulation based on historical data of the target study basin; Determining a target rainwater interception rate according to the total pollutant reduction target and the first corresponding relationship; Determining a target interception amount according to the target rainwater interception rate and the second corresponding relationship; The opening and closing states of the interception port and the outlet are controlled based on the actual interception volume and the target interception volume to adjust the flow of the combined sewage intercepted to the sewage treatment plant and the flow of the combined sewage discharged to the river.

2. The interception method of the drainage system according to claim 1, characterized in that: The controlling the opening and closing states of the intercepting port and the water outlet based on the actual intercepting amount and the target intercepting amount includes: If the actual interception amount is less than the target interception amount, the interception port is controlled to be opened, and the outlet is controlled to be closed, so that the combined sewage is intercepted and sent to the sewage treatment plant for treatment; If the actual interception amount is greater than or equal to the target interception amount, the interception port is controlled to be closed, and the water outlet is controlled to be opened, so that the combined sewage is discharged into the river.

3. The interception method of the drainage system according to claim 1, characterized in that: The total amount of pollutants reduction target is obtained by the following steps: Obtaining the annual rainfall runoff pollution load, annual dry runoff sewage pollution load and water environment capacity of the target study basin, wherein the annual rainfall runoff pollution load and the annual dry runoff sewage pollution load are obtained based on historical data of the target study basin, and the water environment capacity represents the pollutant load of the river; Add the annual rainfall runoff pollution load and the annual dry runoff sewage pollution load to obtain the annual overflow pollution total; The total annual overflow pollution amount is subtracted from the water environment capacity to obtain the total pollutant reduction target.

4. The interception method of the drainage system according to claim 3, characterized in that: The constraint formula of the water environment capacity is: ； in, M is the water environment capacity, is the pollutant concentration limit value corresponding to the preset water quality target of the river, is the actual pollutant concentration value of the river, is the comprehensive degradation coefficient of pollutants, x is the longitudinal distance of the river channel, is the preset flow rate of the river, is the discharge flow of the combined sewage at the outlet of the river, u It is the average flow velocity of the river water in the river channel under the preset flow rate.

5. The interception method of the drainage system according to claim 3, characterized in that: The constraint formula for the annual rainfall runoff pollution load is: ； in, is the annual rainfall runoff pollution load, The number of rainfall events in a typical rainfall year in the target study basin, The typical rainfall year for the target basin is the first i The average concentration of pollutants in each rainfall event, The typical rainfall year for the target basin is the first i The surface runoff coefficient of the rainfall, The typical rainfall year for the target basin is the first i The catchment area of ​​each rainfall event, The typical rainfall year for the target basin is the first i The amount of rainfall during a rainfall event.

6. The interception method of the drainage system according to claim 3, characterized in that: The constraint formula for the annual dry stream sewage pollution load is: ； in, is the annual dry stream sewage pollution load, is the preset dry season flow rate of the drainage system, The default water quality.

7. A drainage system, characterized in that: The drainage system comprises: An interception well, comprising an inlet, an interception port and an outlet, wherein the inlet is used to collect the combined sewage of the target research basin, the interception port is used to connect to the sewage treatment plant, and the outlet is used to connect to the river; A flow meter, used to detect the actual interception volume of the interception well; A control device is electrically connected to the interception well, and is used to obtain the total pollutant reduction target of the target research basin, the actual interception volume, and a pre-stored first correspondence and a second correspondence, wherein the total pollutant reduction target represents the amount of pollutants entering the river that exceeds the pollutant load of the river channel, the first correspondence is the correspondence between the total pollutant reduction amount and the rainwater interception rate, and the second correspondence is the correspondence between the rainwater interception rate and the interception volume, and the first correspondence and the second correspondence are both simulated based on historical data of the target research basin; determine the target rainwater interception rate based on the total pollutant reduction target and the first correspondence; determine the target interception volume based on the target rainwater interception rate and the second correspondence; and control the opening and closing states of the interception port and the outlet based on the actual interception volume and the target interception volume to adjust the flow of the combined sewage intercepted to the sewage treatment plant and the flow of the combined sewage discharged to the river channel.

8. The drainage system according to claim 7, characterized in that: The drainage system also includes a regulating reservoir electrically connected to the control device, and an inlet of the regulating reservoir is connected to the water outlet and the sewage discharge outlet of the river.

9. A control device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the interception method for the drainage system according to any one of claims 1 to 6 is implemented.

10. A computer-readable storage medium storing computer-executable instructions, characterized in that: The computer executable instructions are used to execute the interception method for a drainage system as described in any one of claims 1 to 6.

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