Intelligent control method and system for initial rainwater runoff pollution

Abstract

The invention relates to the technical field of urban runoff pollution control, in particular to an intelligent control method and system for initial rainwater runoff pollution, and the method comprises the steps: obtaining the position of a gutter inlet of a to-be-controlled region and the ground information of a convergence range, and determining the ground water collection time when the farthest point converges to the gutter inlet during single rainfall; according to the current state of the to-be-controlled area, the area initial rainwater interception time and the position of an initial rainwater collection pool are determined; according to the regional initial rainwater interception time and the ground water collection time, pipeline control confluence time is determined; according to the pipeline control confluence time, determining layout parameters of the collecting pipes; a rainfall monitoring system, timing and liquid level monitoring are carried out on the first rain collecting pool, and water inlet and water outlet actions are controlled in a double-linkage mode according to a program. The method is suitable for projects in environment-sensitive areas such as water source protected areas and ports and wharfs, and initial rainwater needs to be strictly treated to prevent environmental pollution.

Description

Technical Field

[0001] The present application relates to the technical field of urban runoff pollution control, and particularly to an intelligent control method and system for the pollution of initial rainwater runoff. Background Art

[0002] Initial rainwater refers to the part of rainwater and sewage with the most serious initial pollution when discharged into the river after being washed by rainwater on the road surface and carrying a lot of pollutants and collected through the drainage system. The initial rainwater has been stipulated in relevant national standards and needs to be intercepted and treated to meet the standards before being discharged into the water body. For engineering projects in areas such as water source protection areas and port terminals, the initial rainwater needs to be fully collected and treated before being discharged. However, due to the different times for the rainwater at each rainwater inlet to reach the initial rain collection pool, the pollution levels of the collected initial rainwater are inconsistent.

[0003] On the one hand, if the interception time of the initial rainwater is increased, both the volume of the initial rain collection pool and the treated water volume will increase, greatly increasing the project construction cost; on the other hand, if the interception time of the initial rainwater is reduced, the rainwater at some rainwater inlets fails to be fully collected and treated due to the long time to reach the initial rain collection pool, resulting in environmental pollution. If the time from each rainwater inlet to the initial rain collection pool can be adjusted to be consistent at the beginning of the design of the engineering drainage system, it will be beneficial to improve the effective utilization rate of the volume of the initial rain collection pool, make the treated water volume more uniform, and reduce the cost of treating the initial rainwater. Summary of the Invention

[0004] To achieve the above object, the present application provides the following technical solutions:

[0005] According to the first aspect of the present invention, the present invention claims protection for an intelligent control method for the pollution of initial rainwater runoff, including:

[0006] S100: Obtain the positions of rainwater inlets and the ground information of the confluence range in the area to be controlled, and determine the ground water collection time for the farthest point to converge to the rainwater inlet during a single rainfall;

[0007] S200: Determine the regional initial rainwater interception time and the position of the initial rain collection pool according to the current state of the area to be controlled;

[0008] S300: Determine the pipeline control confluence time according to the regional initial rainwater interception time and the ground water collection time;

[0009] S400: Determine the layout parameters of the collection pipe according to the pipeline control confluence time;

[0010] S500: Conduct rainfall monitoring system, timing and liquid level monitoring on the initial rain collection pool, and control the water inlet and drainage actions through dual linkage according to the program.

[0011] Further, the S100 further includes:

[0012] Determine the planar position of the rainwater inlet and the confluence range of the rainwater inlets, and determine the surface roughness coefficient according to the ground conditions within the confluence range of the rainwater inlets;

[0013] Measure the ground confluence length from the farthest point within the confluence range of the rainwater inlet to the rainwater inlet;

[0014] Determine the runoff coefficient according to the ground type within the confluence range of the rainwater inlet, and determine the average rainfall intensity during the confluence duration according to the regional meteorological information;

[0015] Determine the ground confluence slope according to the elevation difference and length from the farthest point within the confluence range of the rainwater inlet to the rainwater inlet;

[0016] Calculate the ground water collection time for the farthest point to flow to the rainwater inlet during a single rainfall based on the surface roughness coefficient, ground confluence length, runoff coefficient, average rainfall intensity during the confluence duration, and ground confluence slope.

[0017] Further, the S200 further includes:

[0018] Determine the regional initial rainwater interception time according to the urban runoff pollution control requirements and urban interception control standards of the area to be controlled;

[0019] Preliminarily determine the location of the initial rainwater collection tank according to the actual on-site situation, geological requirements, and terrain conditions of the area to be controlled.

[0020] Further, the S300 further includes:

[0021] Determine the pipeline control confluence time according to the difference between the regional initial rainwater interception time and the ground water collection time.

[0022] Further, the S400 further includes:

[0023] Preliminarily lay out the collection pipeline according to the rainwater inlet location, collection tank location, and on-site terrain features, and obtain the laying length and pipeline slope of the collection pipeline;

[0024] Preliminarily determine the diameter of the collection pipeline;

[0025] Calculate the hydraulic radius based on the cross-sectional area of the collection pipeline, the wetted perimeter of the cross-section of the collection pipeline, and the diameter of the collection pipeline;

[0026] Calculate the flow velocity of the collection pipeline based on the roughness coefficient of the collection pipeline, the hydraulic radius, and the pipeline slope;

[0027] Calculate the actual confluence time of the pipeline based on the laying length of the collection pipeline and the flow velocity of the collection pipeline;

[0028] By continuously adjusting the pipe diameter of the collection pipe, the laying length of the collection pipe, the pipeline slope, and the position parameters of the first flush collection pool, the actual confluence time of the pipeline is controlled to be equal to the controlled confluence time of the pipeline, so that the time for the rainwater at each rainwater inlet to reach the first flush collection pool is the same.

[0029] Obtain the pipe diameter, laying length and position of the collection pipe at each rainwater inlet, the pipeline slope, and the layout of the first flush collection pool.

[0030] Further, the S500 further includes:

[0031] During rainfall, the rainfall monitoring system monitors the rainfall signal through the sensor and sends the rainfall signal to the timing system and the control center. After receiving the rainfall signal, the control center automatically turns on the water inlet system and automatically turns off the drainage system;

[0032] The timing system times until the initial rainwater interception moment and sends the timing signal to the control center. After receiving the timing signal, the control center automatically turns off the water inlet system and automatically turns on the drainage system;

[0033] When the liquid level monitoring system monitors that the water level in the first flush collection pool reaches the high value, it sends the water level signal to the control center. After receiving the water level signal, the control center automatically turns off the water inlet system and automatically turns on the drainage system.

[0034] According to the second aspect of the present invention, the present invention claims to protect an intelligent control system for the pollution of the initial rainwater runoff, including:

[0035] One or more processors;

[0036] A memory having one or more programs stored thereon, and when the one or more programs are executed by the one or more processors, the one or more processors implement the intelligent control method for the pollution of the initial rainwater runoff.

[0037] This application relates to the technical field of urban runoff pollution control, and particularly relates to an intelligent control method and system for the pollution of the initial rainwater runoff. It obtains the rainwater inlet positions and the ground information of the confluence range in the area to be controlled, and determines the ground water collection time for the farthest point to confluence to the rainwater inlet during a single rainfall; determines the regional initial rainwater interception time and the position of the first flush collection pool according to the current state of the area to be controlled; determines the pipeline controlled confluence time according to the regional initial rainwater interception time and the ground water collection time; determines the layout parameters of the collection pipe according to the pipeline controlled confluence time; conducts rainfall monitoring system, timing and liquid level monitoring on the first flush collection pool, and controls the water inlet and drainage actions through double linkage according to the program. The present invention is applicable to projects in environmentally sensitive areas such as water source protection areas and port terminals, and it is necessary to strictly treat the initial rainwater to prevent environmental pollution. Description of the Drawings

[0038] Figure 1The flowchart of a smart control method for initial rainwater runoff pollution requested to be protected by the embodiments of this application;

[0039] Figure 2 The schematic layout diagram of the implementation example of the smart control of initial rainwater runoff pollution for a smart control method for initial rainwater runoff pollution requested to be protected by the embodiments of this application. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0041] The terms "first", "second", and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0042] Referring to "embodiment" in this article means that the specific features, structures, or characteristics described in combination with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0043] According to the first embodiment of the present invention, the present invention requests to protect a smart control method for initial rainwater runoff pollution. Referring to Figure 1 , including:

[0044] S100: Obtain the location of the rainwater inlet and the ground information of the catchment area to be controlled, and determine the surface water collection time when the farthest point converges to the rainwater inlet during a single rainfall event.

[0045] S200: Determine the initial rainwater interception time of the area and the location of the initial rain collection tank according to the current state of the area to be controlled.

[0046] S300: Determine the pipeline control convergence time according to the initial rainwater interception time of the area and the surface water collection time.

[0047] S400: Determine the layout parameters of the collection pipe according to the pipeline control convergence time.

[0048] S500: Conduct rainfall monitoring system, timing and liquid level monitoring on the initial rain collection tank, and control the water inlet and drainage actions through double linkage according to the program.

[0049] Furthermore, the S100 further includes:

[0050] Determine the planar position of the rainwater inlet and the catchment area of the rainwater inlet, and determine the surface roughness coefficient according to the ground conditions of the catchment area of the rainwater inlet;

[0051] Measure the ground runoff length from the farthest point from the rainwater inlet to the rainwater inlet within the catchment area of the rainwater inlet;

[0052] Determine the runoff coefficient according to the ground type within the catchment area of the rainwater inlet, and determine the average rainfall intensity during the runoff duration according to the regional meteorological information;

[0053] Determine the ground runoff slope according to the elevation difference and length from the farthest point from the rainwater inlet to the rainwater inlet within the catchment area of the rainwater inlet;

[0054] Calculate the surface water collection time when the farthest point converges to the rainwater inlet during a single rainfall event based on the surface roughness coefficient, ground runoff length, runoff coefficient, average rainfall intensity during the runoff duration, and ground runoff slope.

[0055] Among them, in this embodiment, investigate and determine the planar position of the rainwater inlet and the catchment area of the rainwater inlet, determine the surface roughness coefficient m according to the ground conditions of the catchment area of the rainwater inlet, measure the ground runoff length L (m) from the farthest point from the rainwater inlet to the rainwater inlet within the catchment area of the rainwater inlet, determine the runoff coefficient φ according to the ground type within the catchment area of the rainwater inlet, determine the average rainfall intensity a (mm / min) during the runoff duration according to the data of the regional meteorological department, and determine the ground runoff slope S according to the elevation difference and length L from the farthest point from the rainwater inlet to the rainwater inlet within the catchment area of the rainwater inlet. Determine the surface water collection time t1 according to the following formula (1).

[0056]

[0057] Where: t1 is the overland flow concentration time (min); m is the surface roughness coefficient; L is the overland flow length (m); φ is the runoff coefficient; a is the average rainfall intensity during the concentration period (mm / min); S is the overland flow slope.

[0058] Further, the S200 further includes:

[0059] Determine the initial rainwater interception time for the area according to the urban runoff pollution control requirements and urban interception control standards of the area to be controlled.

[0060] Preliminarily determine the location of the initial rainwater collection tank according to the actual on-site situation, geological requirements, and terrain conditions of the area to be controlled.

[0061] Further, the S300 further includes:

[0062] Determine the pipe control concentration time according to the difference between the initial rainwater interception time for the area and the overland flow concentration time.

[0063] Among them, in this embodiment, the pipe control concentration time t2 is determined according to the following formula (2).

[0064] t2 = t - t1 (2);

[0065] In the formula, t2 is the pipe control concentration time (min), t1 is the overland flow concentration time (min), and t is the initial rainwater interception time (min);

[0066] Further, the S400 further includes:

[0067] Preliminarily arrange the collection pipes according to the rainwater inlet location, collection tank location, and on-site terrain features, and obtain the laying length and pipe slope of the collection pipes;

[0068] Preliminarily determine the diameter of the collection pipes;

[0069] Calculate the hydraulic radius based on the cross-sectional area of the collection pipe, the wetted perimeter of the cross-section of the collection pipe, and the diameter of the collection pipe;

[0070] Calculate the flow velocity of the collection pipe based on the roughness coefficient of the collection pipe, the hydraulic radius, and the pipe slope;

[0071] Calculate the actual concentration time of the pipe based on the laying length of the collection pipe and the flow velocity of the collection pipe;

[0072] By continuously adjusting the parameters of the diameter of the collection pipe, the laying length of the collection pipe, the pipe slope, and the location of the initial rainwater collection tank, control the actual concentration time of the pipe to be equal to the pipe control concentration time, so that the time for the rainwater from each rainwater inlet to reach the initial rainwater collection tank is the same.

[0073] Obtain the pipe diameter, laying length and position of the collection pipes for each rainwater inlet, the pipe slope, and the layout of the initial rain collection pond.

[0074] Among them, in this embodiment, according to the positions of the rainwater inlets, the position of the collection pond, and the on-site terrain features, the collection pipes are preliminarily arranged, and the laying length L (m) and the pipe slope I of the collection pipes are obtained;

[0075] The pipe diameter D (m) of the collection pipes is initially determined, and the pipe diameter of the collection pipes is not less than DN200;

[0076] Calculate the hydraulic radius R according to the following formula (3);

[0077]

[0078] In the formula, A is the cross-sectional area of the water flow through the collection pipe (m2); x is the wetted perimeter of the cross-section of the collection pipe, In the formula, D is the pipe diameter of the collection pipe (m).

[0079] Calculate the water flow velocity v (m / s) of the collection pipe according to the following formula (4);

[0080]

[0081] In the formula, v is the water flow velocity of the collection pipe (m / s); n is the roughness coefficient of the collection pipe, 0.012 - 0.013 for metal pipes, 0.009 - 0.011 for plastic pipes, and 0.013 - 0.014 for concrete pipes; R is the hydraulic radius; I is the pipe slope.

[0082] Calculate the actual pipe confluence time t of the collection pipe according to the following formula (5) 2i ;

[0083]

[0084] In the formula, t 2i is the actual pipe confluence time (min), L is the laying length of the collection pipe (m), and v is the water flow velocity of the collection pipe (m / s);

[0085] By continuously adjusting parameters such as the pipe diameter of the collection pipe, the laying length of the collection pipe, the pipe slope, and the position of the initial rain collection pond, control the actual pipe confluence time t 2i to be equal to the pipe control confluence time t2, so that the time for the rainwater from each rainwater inlet to reach the initial rain collection pond is the same.

[0086] Obtain the pipe diameter, laying length and position of the collection pipes for each rainwater inlet, the pipe slope, and the layout of the initial rain collection pond, etc.

[0087] Furthermore, the S500 further includes:

[0088] During rainfall, the rainfall monitoring system monitors the rainfall signal through sensors and sends the rainfall signal to the timing system and the control center. After receiving the rainfall signal, the control center automatically activates the water inlet system and automatically shuts down the drainage system.

[0089] When the timing system counts down to the initial rain interception moment, it sends a timing signal to the control center. After receiving the timing signal, the control center automatically shuts down the water inlet system and automatically activates the drainage system.

[0090] When the liquid level monitoring system detects that the water level in the initial rain collection pool reaches the high value, it sends a water level signal to the control center. After receiving the water level signal, the control center automatically shuts down the water inlet system and automatically activates the drainage system.

[0091] In the actual implementation of the present invention, there are a total of 3 rainwater inlets. Three rainwater inlet positions are temporarily arranged according to the current terrain features. The surface roughness coefficient m is determined respectively according to the ground conditions in the confluence range of the rainwater inlets. The ground confluence length L (m) from the farthest point from the rainwater inlet to the rainwater inlet in the confluence range of the rainwater inlets is measured respectively. The runoff coefficient φ is determined respectively according to the ground types in the confluence range of the rainwater inlets. The average rainfall intensity a (mm / min) during the confluence duration is determined according to the data of the regional meteorological department. The average rainfall intensity a during the confluence duration in this project area is 0.63 mm / min. The ground confluence slope S is determined according to the elevation difference from the farthest point from the rainwater inlet to the rainwater inlet and the length L in the confluence range of the rainwater inlets. Refer to Figure 2 Finally, the ground information and the ground water collection time t1 of the confluence ranges of the No. 1 rainwater inlet, No. 2 rainwater inlet, and No. 3 rainwater inlet are calculated as shown in the table:

[0092] Table 1 Ground Information and Ground Water Collection Time Table of Rainwater Inlet Confluence Range

[0093]

[0094] According to the local regulations of the project, the initial rain interception time is not less than 15.0 min. In this embodiment, according to the importance of the project, the initial rain interception time is 20.0 min. The pipe control confluence time t2 is calculated by formula (2) as shown in Table 2.

[0095] Table 2 Pipe Control Confluence Time Table of Rainwater Inlet

[0096]

[0097] According to the positions of the rainwater inlets, the positions of the collection pools, and the on-site terrain features, the collection pipes are preliminarily arranged, and the laying length L (m) and the pipe slope I of the collection pipes are obtained. Also, by continuously adjusting parameters such as the pipe diameter of the collection pipes, the laying length of the collection pipes, the pipe slope, and the position of the initial rain collection pool, the actual confluence time t of the pipes is controlled. 2iIt is equal to the pipeline control confluence time t2, so that the time for the rainwater from each rainwater inlet to reach the first-flush collection pool is the same. Considering the actual layout of the project, the layout of the collection pipes is finally calculated as shown in Table 3.

[0098]

[0099] According to the second embodiment of the present invention, the present invention claims protection for an intelligent control system for the pollution of initial rainwater runoff, including:

[0100] One or more processors;

[0101] A memory storing one or more programs, which when executed by the one or more processors cause the one or more processors to implement the intelligent control method for the pollution of initial rainwater runoff.

[0102] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0103] In addition, each functional unit in the various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. The above is only the implementation manner of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

[0104] The specific implementation manners of the invention have been described in detail above, but they are only examples, and the present application is not limited to the specific implementation manners described above. For those skilled in the art, any equivalent modification or substitution to the invention is also within the scope of the present application. Therefore, equivalent transformations, modifications, improvements, etc. made without departing from the spirit and principles of the present application should all be covered within the scope of the present application.

Claims

1. An intelligent control method for initial rainwater runoff pollution, characterized in that Including: S100: Obtain the positions of stormwater inlets and the ground information of the catchment area to be controlled, and determine the ground catchment time for the farthest point to flow into the stormwater inlet during a single rainfall event; S200: Determine the initial rainwater interception time for the area and the location of the initial rain collection pool based on the current state of the area to be controlled; S300: Determine the pipe control confluence time according to the initial rainwater interception time for the area and the ground catchment time; S400: Determine the layout parameters of the collection pipe according to the pipe control confluence time; S500: Conduct rainfall monitoring system, timing and liquid level monitoring on the initial rain collection pool, and control the water inlet and drainage actions through dual-linkage according to the program.

2. The intelligent control method for initial rainwater runoff pollution according to claim 1, characterized in that, The S100 further includes: Determine the planar positions of the stormwater inlet and the catchment area of the stormwater inlet, and determine the surface roughness coefficient according to the ground conditions of the catchment area of the stormwater inlet; Measure the ground confluence length from the farthest point from the stormwater inlet to the stormwater inlet within the catchment area of the stormwater inlet; Determine the runoff coefficient according to the ground types within the catchment area of the stormwater inlet, and determine the average rainfall intensity during the confluence duration according to the regional meteorological information; Determine the ground confluence slope according to the elevation difference and length from the farthest point from the stormwater inlet to the stormwater inlet within the catchment area of the stormwater inlet; Calculate the ground catchment time for the farthest point to flow into the stormwater inlet during a single rainfall event based on the surface roughness coefficient, ground confluence length, runoff coefficient, average rainfall intensity during the confluence duration, and ground confluence slope.

3. The intelligent control method for initial rainwater runoff pollution according to claim 1, characterized in that, The S200 further includes: Determine the initial rainwater interception time for the area according to the urban runoff pollution control requirements and urban interception control standards of the area to be controlled; Preliminarily determine the location of the initial rain collection pool according to the on-site actual situation, geological requirements, and terrain conditions of the area to be controlled.

4. The intelligent control method for initial rainwater runoff pollution according to claim 1, characterized in that The S300 further includes: Determine the pipe control confluence time according to the difference between the initial rainwater interception time for the area and the ground catchment time.

5. The intelligent control method for initial rainwater runoff pollution according to claim 1, characterized in that, The S400 further includes: Preliminarily arrange the collection pipe according to the positions of the stormwater inlets, the positions of the collection pools, and the on-site terrain features, and obtain the laying length and pipe slope of the collection pipe; Preliminarily determine the pipe diameter of the collection pipe; Calculate the hydraulic radius based on the cross-sectional area of the collection pipe, the wetted perimeter of the cross-section of the collection pipe, and the pipe diameter of the collection pipe; Calculate the flow velocity of the collection pipe based on the roughness coefficient of the collection pipe, the hydraulic radius, and the pipe slope; Calculate the actual confluence time of the pipe based on the laying length of the collection pipe and the flow velocity of the collection pipe; By continuously adjusting the pipe diameter, laying length, pipe slope of the collection pipe, and the position parameters of the initial rain collection pool, control the actual confluence time of the pipe to be equal to the pipe control confluence time, so that the time for the rainwater at each stormwater inlet to reach the initial rain collection pool is the same. Obtain the pipe diameter, laying length, position, pipe slope of the collection pipe for each stormwater inlet, and the layout of the initial rain collection pool.

6. The intelligent control method for initial rainwater runoff pollution according to claim 1, characterized in that The S500 further includes: During rainfall, the rainfall monitoring system monitors the rainfall signal through sensors and sends the rainfall signal to the timing system and the control center. After receiving the rainfall signal, the control center automatically turns on the water inlet system and automatically turns off the drainage system; When the timing system times to the initial rain interception moment, it sends the timing signal to the control center. After receiving the timing signal, the control center automatically turns off the water inlet system and automatically turns on the drainage system; When the liquid level monitoring system detects that the water level in the initial rain collection pool reaches a high value, it sends the water level signal to the control center. After receiving the water level signal, the control center automatically shuts down the water inlet system and automatically turns on the drainage system.

7. An intelligent control system for the pollution of initial rainwater runoff, characterized in that, Including: One or more processors; A memory having stored thereon one or more programs, which when executed by the one or more processors cause the one or more processors to implement an intelligent control method for initial rainwater runoff pollution according to any one of claims 1 to 6.

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