A monitoring and management method, system and electronic equipment for river basin non-point source pollution

Abstract

The present invention discloses a monitoring and management method, system and electronic equipment for watershed non-point source pollution, and relates to the field of pollution monitoring technology. The method includes: building a pollution monitoring network in the area to be tested; determining the pollution load of current pollutants of each pollution source in the area to be tested based on the watershed non-point source pollution data; the pollution load of the current pollutants of any pollution source is the product of the amount of water flowing through the pollution source in a preset time period and the average concentration of the current pollutant concentration in the preset time period; determining the load thresholds of multiple current pollutants entering the target water body in the area to be tested based on the water quality requirements of the target water body and the pollution load of the current pollutants of each pollution source in the area to be tested; determining the excessive pollution sources in the area to be tested based on the load thresholds of multiple entering the target water body. By building a pollution monitoring network in the area to be tested, the present invention can complete regulatory monitoring of the area to be tested while measuring the pollution load in the area to be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of pollution monitoring, and in particular to a monitoring and management method, system and electronic equipment for watershed non-point source pollution. Background Art

[0002] The results of China's first national pollution source census and China's second national pollution source census show that agricultural non-point source pollution has become one of the main causes of water pollution. Effective prevention and control of agricultural non-point source pollution is an important issue facing the ecological environment. Among them, accurately assessing the load of agricultural non-point source pollution at the basin scale is an important means of prevention and control. Monitoring is a basic method to obtain first-hand research data and accurately assess the load of agricultural non-point source pollution. Existing basin monitoring methods can only conduct regulatory monitoring, or only conduct pollution load assessment. At present, there is a lack of basin monitoring methods that take into account both load assessment and regulatory purposes. Summary of the invention

[0003] The purpose of the present invention is to provide a monitoring and management method, system and electronic equipment for watershed non-point source pollution, which can measure the pollution load of the area to be tested and complete regulatory monitoring of the area to be tested.

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

[0005] A monitoring and management method for watershed non-point source pollution, comprising:

[0006] A pollution monitoring network is built in the area to be tested; the pollution monitoring network includes a plurality of monitoring components; the monitoring components correspond one to one with the pollution sources in the area to be tested; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution sources; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within a preset time period;

[0007] Identify any one pollutant as a current pollutant;

[0008] According to the watershed non-point source pollution data, the pollution load of the current pollutants of each pollution source in the tested area is determined; the pollution load of the current pollutants of any pollution source is the product of the amount of water flowing through the pollution source in a preset time period and the average concentration of the current pollutant concentration in the preset time period;

[0009] Obtain water quality requirements for target water bodies;

[0010] Determine multiple load thresholds of current pollutants entering the target water body in the area to be tested according to the water quality requirements of the target water body and the pollution load of current pollutants of each pollution source in the area to be tested;

[0011] Traversing multiple types of pollutants, obtaining multiple load thresholds of each pollutant entering the target water body in the test area;

[0012] The excessive pollution sources in the area to be tested are determined according to the load thresholds of the plurality of target water bodies.

[0013] Optionally, the types of pollutants monitored by the monitoring component include total nitrogen, total phosphorus and chemical oxygen demand.

[0014] Optionally, the step of building a pollution monitoring network for the area to be tested includes:

[0015] Acquire multiple pollution monitoring targets in the area to be tested; the pollution monitoring targets include a target water body, multiple water sources and multiple pollution sources;

[0016] Determine any water source as the current water source;

[0017] Taking the current water source as the starting point and the target water body as the end point, multiple pollution sources that the water body in the current water source flows through are connected in sequence along the flow direction of the current water source to obtain the current longitudinal monitoring line;

[0018] Traverse all water sources in the area to be tested to obtain multiple longitudinal monitoring lines;

[0019] Determine the outline of the target water body as an initial boundary;

[0020] Taking the target water body as the center, an updated boundary is constructed outside the initial boundary; the distance threshold from the updated boundary to the initial boundary is smaller than the distance between any two pollution monitoring targets in the area to be tested;

[0021] Determine the area enclosed by the initial boundary and the updated boundary as the current horizontal monitoring line area;

[0022] Connect all pollution sources in the current horizontal monitoring line area to obtain the current horizontal monitoring line;

[0023] The updated boundary is used as the initial boundary, and the process returns to the step of "taking the target water body as the center and constructing an updated boundary outside the initial boundary" until the horizontal monitoring line covers all pollution sources in the area to be tested, thereby obtaining a plurality of horizontal monitoring lines;

[0024] A monitoring component is respectively set at each pollution source in the area to be tested to obtain the pollution monitoring network.

[0025] Optionally, according to the water quality requirements of the target water body and the pollution load of the current pollutants of each pollution source in the tested area, multiple load thresholds of the current pollutants entering the target water body in the tested area are determined, including:

[0026] According to the pollution load of the current pollutants of each pollution source in the area to be tested, determine the pollution load of the current pollutants of each longitudinal monitoring line;

[0027] Determine the sum of the pollution loads of the current pollutants of all longitudinal monitoring lines as the first total pollution load of the current pollutants;

[0028] According to the total amount of water flowing into the target water body in the test area and the water quality requirements of the current pollutants in the target water body, according to formula F w-0 =Q*C0 / 1000, determine the total load threshold of the current pollutants entering the target water body; where F w-0 is the total load threshold of the current pollutants entering the target water body; Q is the total amount of water flowing into the target water body from the tested area; C0 is the water quality requirement of the current pollutants in the target water body;

[0029] Determine any longitudinal monitoring line as the current longitudinal monitoring line;

[0030] Determine the ratio of the pollution load of the current pollutant of the current longitudinal monitoring line to the first total pollution load of the current pollutant as the current weight value;

[0031] The product of the current weight value and the total load threshold of the current pollutants entering the target water body is determined as the load threshold of the current pollutants entering the target water body corresponding to the current longitudinal monitoring line.

[0032] Optionally, before determining the excessive pollution sources in the area to be tested according to the load thresholds of the plurality of target water bodies, the method further includes:

[0033] According to the pollution load of the current pollutants of each pollution source in the area to be tested, determine the pollution load of the current pollutants of each horizontal monitoring line;

[0034] Determine the sum of the pollution loads of the current pollutants of all horizontal monitoring lines as the second total pollution load of the current pollutants;

[0035] Determine any horizontal monitoring line as the current horizontal monitoring line;

[0036] Determine all pollution sources on the current horizontal monitoring line as the current water catchment unit;

[0037] Determine the ratio of the pollution load of the current pollutant of the current horizontal monitoring line to the second total pollution load of the current pollutant as the current weight value;

[0038] The product of the current weight value and the total load threshold of the current pollutants entering the target water body is determined as the current pollutant load supervision threshold of the current water catchment unit.

[0039] Optionally, before determining the excessive pollution sources in the area to be tested according to the load thresholds of the plurality of target water bodies, the method further includes:

[0040] All pollution sources in the catchment unit whose current pollutant load is greater than the corresponding current pollutant load regulatory threshold are determined to be excessive pollution sources.

[0041] Optionally, determining the excessive pollution sources in the area to be tested according to the load thresholds of the plurality of target water bodies includes:

[0042] It is determined that all pollution sources on the longitudinal monitoring line whose current pollutant load is greater than the corresponding load threshold entering the target water body are excessive pollution sources.

[0043] A monitoring and management system for watershed non-point source pollution, comprising:

[0044] A pollution monitoring network motor module is used to build a pollution monitoring network for the area to be tested; the pollution monitoring network includes multiple monitoring components; the monitoring components correspond to the pollution sources in the area to be tested one by one; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution source; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within the preset time period;

[0045] A current pollutant determination module, used to determine any pollutant as a current pollutant;

[0046] A pollution load determination module is used to determine the pollution load of the current pollutants of each pollution source in the test area according to the surface source pollution data of the watershed; the pollution load of the current pollutants of any pollution source is the product of the amount of water flowing through the pollution source in a preset time period and the average concentration of the current pollutant concentration in the preset time period;

[0047] A target water body water quality requirement acquisition module is used to obtain the target water body water quality requirements;

[0048] A load threshold determination module, used to determine multiple load thresholds of current pollutants entering the target water body in the test area according to the water quality requirements of the target water body and the pollution load of current pollutants of each pollution source in the test area;

[0049] A multiple load threshold determination module is used to traverse multiple pollutant types and obtain multiple load thresholds for each pollutant entering the target water body in the test area;

[0050] The excessive pollution source determination module is used to determine the excessive pollution source in the area to be tested according to the load thresholds of the multiple target water bodies.

[0051] An electronic device comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for monitoring and managing watershed non-point source pollution.

[0052] Optionally, the memory is a readable storage medium.

[0053] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0054] The present invention provides a monitoring and management method, system and electronic equipment for watershed non-point source pollution. By building a pollution monitoring network in the area to be tested, it is possible to determine the load thresholds of multiple pollutants currently entering the target water body in the area to be tested, thereby completing regulatory monitoring of the area to be tested while measuring the pollution load in the area to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0056] Figure 1 This is a monitoring and management method for watershed non-point source pollution according to Example 1 of the present invention. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] The purpose of the present invention is to provide a monitoring and management method, system and electronic equipment for watershed non-point source pollution, which can measure the pollution load of the area to be tested and complete regulatory monitoring of the area to be tested.

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] Example 1

[0061] like Figure 1 As shown, this embodiment provides a monitoring and management method for watershed non-point source pollution, including:

[0062] Step 101: Build a pollution monitoring network for the area to be tested. The pollution monitoring network includes multiple monitoring components; the monitoring components correspond to the pollution sources in the area to be tested one by one; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution sources; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within a preset time period. The types of pollutants monitored by the monitoring components include total nitrogen, total phosphorus and chemical oxygen demand.

[0063] Step 101 includes:

[0064] Step 1011: Acquire multiple pollution monitoring targets in the area to be tested; the pollution monitoring targets include a target water body, multiple water sources, and multiple pollution sources.

[0065] Step 1012: Determine any water source as the current water source.

[0066] Step 1013: Taking the current water source as the starting point and the target water body as the end point, multiple pollution sources through which the water body in the current water source flows are sequentially connected along the water flow direction of the current water source to obtain the current longitudinal monitoring line.

[0067] Step 1014: traverse all water sources in the area to be tested to obtain multiple longitudinal monitoring lines.

[0068] Step 1015: Determine the outline of the target water body as the initial boundary.

[0069] Step 1016: Taking the target water body as the center, construct an updated boundary outside the initial boundary; the distance from the updated boundary to the initial boundary is a distance threshold; the distance threshold is less than the distance between any two pollution monitoring targets in the area to be tested.

[0070] Step 1017: Determine the area enclosed by the initial boundary and the updated boundary as the current horizontal monitoring line area.

[0071] Step 1018: Connect all pollution sources in the current horizontal monitoring line area to obtain the current horizontal monitoring line;

[0072] Step 1019: Use the updated boundary as the initial boundary and return to step 1016 until the lateral monitoring line covers all pollution sources in the area to be tested, thereby obtaining multiple lateral monitoring lines.

[0073] Step 1010: A monitoring component is respectively set at each pollution source in the area to be tested to obtain a pollution monitoring network.

[0074] Step 102: Determine any pollutant as a current pollutant.

[0075] Step 103: Determine the pollution load of the current pollutants of each pollution source in the test area based on the watershed surface source pollution data; the pollution load of the current pollutants of any pollution source is the product of the amount of water flowing through the pollution source in a preset time period and the average concentration of the current pollutant concentration in the preset time period.

[0076] Step 104: Obtain water quality requirements of the target water body.

[0077] Step 105: Determine multiple load thresholds of current pollutants entering the target water body in the area to be tested according to the water quality requirements of the target water body and the pollution load of current pollutants of each pollution source in the area to be tested.

[0078] Step 105 includes:

[0079] Step 1051: Determine the pollution load of the current pollutants in each longitudinal monitoring line according to the pollution load of the current pollutants of each pollution source in the area to be tested.

[0080] Step 1052: Determine the sum of the pollution loads of the current pollutants of all longitudinal monitoring lines as the first total pollution load of the current pollutants.

[0081] Step 1053: According to the total amount of water flowing into the target water body in the test area and the water quality requirements of the current pollutants in the target water body, according to formula F w-0 =Q*C0 / 1000, determine the total load threshold of the current pollutants entering the target water body; where F w-0 is the total load threshold of current pollutants entering the target water body; Q is the total amount of water flowing into the target water body from the tested area; C0 is the water quality requirement of the current pollutants in the target water body;.

[0082] Step 1054: Determine any longitudinal monitoring line as the current longitudinal monitoring line.

[0083] Step 1055: Determine the ratio of the pollution load of the current pollutant in the current longitudinal monitoring line to the first total pollution load of the current pollutant as the current weight value.

[0084] Step 1056: Determine the product of the current weight value and the total load threshold of the current pollutants entering the target water body as the load threshold of the current pollutants entering the target water body corresponding to the current longitudinal monitoring line.

[0085] Step 106: Traverse multiple types of pollutants to obtain multiple load thresholds for each pollutant entering the target water body in the area to be tested.

[0086] Step 107: Determine the excessive pollution sources in the tested area according to the load thresholds of the multiple target water bodies. Step 107 includes: determining all pollution sources on the longitudinal monitoring line whose current pollutant load is greater than the corresponding load threshold of the target water body as excessive pollution sources.

[0087] Before step 107, the method further includes:

[0088] Step 108: Determine multiple load supervision thresholds of current pollutants in the area to be tested.

[0089] Step 108 includes:

[0090] Step 1081: Determine the pollution load of the current pollutants of each horizontal monitoring line according to the pollution load of the current pollutants of each pollution source in the area to be tested.

[0091] Step 1082: Determine the sum of the pollution loads of the current pollutants of all horizontal monitoring lines as the second total pollution load of the current pollutants.

[0092] Step 1083: Determine any horizontal monitoring line as the current horizontal monitoring line.

[0093] Step 1084: Determine that all pollution sources on the current horizontal monitoring line are current water collection units.

[0094] Step 1085: Determine the ratio of the pollution load of the current pollutant in the current horizontal monitoring line to the second total pollution load of the current pollutant as the current weight value.

[0095] Step 1086: Determine the product of the current weight value and the current total load threshold of pollutants entering the target water body as the current pollutant load supervision threshold of the current catchment unit.

[0096] Before step 107, the method further includes:

[0097] Step 109: Determine that all pollution sources in the catchment unit whose current pollutant load is greater than the corresponding current pollutant load regulation threshold are excessive pollution sources.

[0098] The following is a specific description of the monitoring and management method for watershed non-point source pollution provided by this embodiment. When the target water body is a lake, the monitoring and management method for watershed non-point source pollution provided by this embodiment includes:

[0099] 1. Monitoring line and monitoring point setting method

[0100] (1) Set up longitudinal monitoring lines based on the pollutant transfer process. Depending on the type of pollution source that the pollutants pass through from the source to the target water body, multiple longitudinal monitoring lines can be set up, such as source-into the lake, source-village-into the lake, source-village-farmland-into the lake, source-farmland-village-into the lake, source-farmland-into the lake. Each longitudinal line is equipped with pollution source monitoring points, which are located at the water inlet and outlet of the pollution source. The monitoring line is a line formed by connecting several monitoring points, and the specific monitoring content is subject to each monitoring point.

[0101] Specifically, a longitudinal monitoring line is a line connected by several monitoring points. The connection order of the monitoring points is from the source to the water body. The monitoring content of each monitoring point is water quality and water quantity. Among them, the water quality monitoring indicators are generally total nitrogen, total phosphorus and chemical oxygen demand (COD). The monitoring method is generally manual or automatic sampler sampling, and then laboratory analysis. The water quantity monitoring method is generally the flow meter method. The flow velocity of the monitoring point is measured by a flow meter, and then combined with the cross-sectional area through which the water volume of the monitoring point passes, it is obtained that water volume = flow velocity × cross-sectional area.

[0102] (2) Set up horizontal monitoring lines based on pollutant confluence nodes. Set up multiple horizontal monitoring lines from the source to the target water body, including background monitoring lines, road node monitoring lines, lake entrance monitoring lines, and water quality response monitoring lines. Set up water confluence unit pollutant output monitoring points at the intersection of each horizontal monitoring line and the vertical monitoring line. A horizontal monitoring line is a line connected by several monitoring points on several vertical monitoring lines. The monitoring points are basically in the same direction perpendicular to the vertical line, and the monitoring content and methods of each monitoring point are the same as those of the vertical monitoring line.

[0103] 2. Quantification methods of pollution load and pollutant transport process

[0104] (3) Quantify the pollutant transport process and pollution source emissions and loads entering the lake based on the longitudinal monitoring line. The pollutant transport process is represented by the transport coefficient R (dimensionless), which is calculated based on the cross-sectional load of two monitoring points on the same longitudinal monitoring line at the same time.

[0105] R i-w =(F i -F w ) / F i (1)

[0106] In the formula, R i-w is the pollutant transfer coefficient from monitoring point i to monitoring point w at the lake entrance on the same longitudinal monitoring line, F i is the pollution load of monitoring point i on the same longitudinal monitoring line in a certain period of time (in kg), F w It is the pollution load (in kg) of the monitoring point w on the same longitudinal monitoring line in the same period. The pollution load data is calculated from the monitoring data of the monitoring point. The pollution load of a monitoring point = the water volume of the monitoring point * the pollutant concentration.

[0107] Pollution source emissions (in L) refer to the pollutant emissions from pollution sources within a certain monitoring point catchment unit, and are calculated using the pollution source census method. Pollution sources are generally divided into domestic sources, aquaculture sources, planting sources, and point sources, and the following formula is used to calculate domestic source emissions.

[0108] L h =N h ×Eh / 1000(2)

[0109] Among them, L h is the emission from domestic sources (in tons per year (t / a)), N h is the population (in people), E h It is the pollution emission coefficient of domestic sources (in kilograms per person per year (kg / p / a)), which is obtained through the first / secondary pollution source census coefficient.

[0110] The following formula is used to calculate emissions from aquaculture sources.

[0111] L l =N l ×E l / 1000(3)

[0112] Among them, L l is the emission from aquaculture sources (in tons per year (t / a)), N l is the breeding quantity (in h), E h is the pollution emission coefficient of aquaculture sources (in kilograms per head per year (kg / h / a)), which is obtained through the first / secondary pollution source census coefficient.

[0113] The following formula is used to calculate the emissions from planting sources.

[0114] L c =N c ×E c / 1000(4)

[0115] Among them, L c is the emission from planting sources (in tons per year (t / a)), N c is the farmland area (in hectares (ha)), E h is the pollution emission coefficient of planting sources (in kilograms per hectare per year (kg / ha / a)), which is obtained through the first / secondary pollution source census coefficient.

[0116] Point source emissions are calculated using the following formula:

[0117] L p =W p ×C p / 1000000(5)

[0118] Among them, L p is the current phosphorus load of the basin point source (in tons per year (t / a)), W p The unit of discharge for point source sewage in the basin is tons per cubic meter (m 3 / a)), C pIt is the concentration of phosphorus in wastewater discharged from point sources in the basin (in milligrams per liter (mg / L)).

[0119] The pollution source load into the lake is the pollutant load into the lake from the pollution source within the catchment unit of a certain monitoring point. i-m Calculate according to the following formula.

[0120] F i-m =L i-m *R i-w (6)

[0121] In the formula, F i-m is the pollutant load into the lake from the pollution source in the catchment unit of monitoring point i (in kg), L i-m is the pollutant emission of pollution source m in the catchment unit of monitoring point i (in kg), L i-m For the above L h , L l , L c and L p The sum, R i-w is the transfer coefficient from monitoring point i to the water body entering the lake, calculated using formula (1).

[0122] (4) Quantify the pollution load of the watershed unit based on the horizontal monitoring line.

[0123] The pollution load (in kg) of the catchment unit at a monitoring point k on the horizontal monitoring line is determined based on the pollutant output flux from the monitoring point to the lake water body.

[0124] F k-w =F k *R k-w (7)

[0125] In the formula, F k-w is the pollutant load entering the lake in the catchment unit of monitoring point k (in kg), F k is the flux of pollutant output at monitoring point k (in kg), R k-w is the transfer coefficient from monitoring point k to the water entering the lake.

[0126] R k-w =(F k -F w ) / F k (8)

[0127] In the formula, R k-w is the pollutant transfer coefficient from monitoring point k to monitoring point w at the lake entrance on the same longitudinal monitoring line, F k is the pollution load of monitoring point k on the same longitudinal monitoring line in a certain period of time (in kg), F wIt is the pollution load (in kg) at the monitoring point w on the same longitudinal monitoring line during the same period.

[0128] 3. Pollution source supervision methods

[0129] (5) Based on the water quality requirements of the target water body, determine the water quality control threshold for each longitudinal line and the load control threshold for each catchment unit.

[0130] Water quality control threshold F for a certain vertical line l , according to the total load threshold F of the basin into the lake w-0 And the load proportion P of this longitudinal line l Sure:

[0131] F l =F w-0 *P l (9)

[0132] Among them, the total load threshold F of the basin entering the lake w-0 (in kilograms), according to the water volume Q (in m 3 ) and the target water quality requirement C0 (in milligrams per liter (mg / L)):

[0133] F w-0 =Q*C0 / 1000 (10)

[0134] Among them, Q is the water volume at the lake entrance monitoring point on the longitudinal line, and C0 is the water quality protection target of the area.

[0135] Among them, P l is determined as the proportion of the load entering the lake along a certain longitudinal line l to all the loads entering the lake (dimensionless).

[0136]

[0137] Among them, F w-l is the load entering the lake along the lth longitudinal line (in kg).

[0138] The load supervision threshold F of a water catchment unit k k , according to the total load threshold Fw-0 of the basin entering the lake and the load proportion P of the catchment unit k Sure:

[0139] F k =F w-0 *P k (12)

[0140] Among them, P k is determined as the proportion of the inflow load of the catchment unit k to the total inflow load of the lake (dimensionless).

[0141]

[0142] Based on the above monitoring and supervision methods, a scientific basis can be provided for the water quality environment management of the river basin. For example, when the water quality of the water body exceeds the standard, the pollution source causing the water quality to exceed the standard can be quickly identified based on this method, and the pollutant emission standard of the pollution source can be determined while meeting the water quality requirements.

[0143] Example 2

[0144] In order to execute the method corresponding to the above embodiment 1 to achieve the corresponding functions and technical effects, a monitoring and management system for watershed non-point source pollution is provided below, which is characterized by comprising:

[0145] The pollution monitoring network motor module is used to build a pollution monitoring network in the area to be tested; the pollution monitoring network includes multiple monitoring components; the monitoring components correspond one-to-one to the pollution sources in the area to be tested; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution sources; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within the preset time period.

[0146] The current pollutant determination module is used to determine any pollutant as the current pollutant.

[0147] The pollution load determination module is used to determine the pollution load of the current pollutants of each pollution source in the test area based on the surface source pollution data of the watershed; the pollution load of the current pollutants of any pollution source is the product of the amount of water flowing through the pollution source in a preset time period and the average concentration of the current pollutant concentration in the preset time period.

[0148] The target water body water quality requirement acquisition module is used to obtain the target water body water quality requirements.

[0149] The load threshold determination module is used to determine multiple load thresholds of current pollutants entering the target water body in the test area according to the water quality requirements of the target water body and the pollution load of current pollutants of each pollution source in the test area.

[0150] The multi-load threshold determination module is used to traverse multiple types of pollutants and obtain multiple load thresholds for each pollutant entering the target water body in the test area.

[0151] The excessive pollution source determination module is used to determine the excessive pollution sources in the test area according to the load thresholds of multiple inflow target water bodies.

[0152] Example 3

[0153] This embodiment provides an electronic device, characterized in that it includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the monitoring and management method for watershed non-point source pollution described in Example 1. The memory is a readable storage medium.

[0154] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0155] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for monitoring and managing watershed non-point source pollution, characterized in that: include: A pollution monitoring network is built in the area to be tested; the pollution monitoring network includes multiple longitudinal monitoring lines, multiple transverse monitoring lines and multiple monitoring components; the monitoring components correspond one to one with the pollution sources in the area to be tested; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution sources; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within the preset time period; Identify any one pollutant as a current pollutant; Determine the pollution load of current pollutants of each pollution source in the area to be tested based on the watershed surface source pollution data; The pollution load of the current pollutant of any pollution source is the product of the amount of water flowing through the pollution source during the preset time period and the average concentration of the current pollutant concentration during the preset time period; According to the pollution load of the current pollutants of each pollution source in the area to be tested, determine the pollution load of the current pollutants of each longitudinal monitoring line; Determine the sum of the pollution loads of the current pollutants of all longitudinal monitoring lines as the first total pollution load of the current pollutants; According to the total amount of water flowing into the target water body in the test area and the water quality requirements of the current pollutants in the target water body, according to formula F w-0 =Q*C0 / 1000, determine the total load threshold of the current pollutants entering the target water body; where F w-0 is the total load threshold of the current pollutants entering the target water body; Q is the total amount of water flowing into the target water body from the tested area; C0 is the water quality requirement of the current pollutants in the target water body; Determine any longitudinal monitoring line as the current longitudinal monitoring line; Determine the ratio of the pollution load of the current pollutant of the current longitudinal monitoring line to the first total pollution load of the current pollutant as the current weight value; Determine the product of the current weight value and the total load threshold of the current pollutants entering the target water body as the load threshold of the current pollutants entering the target water body corresponding to the current longitudinal monitoring line; Traversing multiple types of pollutants, obtaining multiple load thresholds of each pollutant entering the target water body in the test area; According to the pollution load of the current pollutants of each pollution source in the area to be tested, determine the pollution load of the current pollutants of each horizontal monitoring line; Determine the sum of the pollution loads of the current pollutants of all horizontal monitoring lines as the second total pollution load of the current pollutants; Determine any horizontal monitoring line as the current horizontal monitoring line; Determine all pollution sources on the current horizontal monitoring line as the current water catchment unit; Determine the ratio of the pollution load of the current pollutant of the current horizontal monitoring line to the second total pollution load of the current pollutant as the current weight value; Determine the product of the current weight value and the total load threshold of the current pollutants entering the target water body as the current pollutant load supervision threshold of the current catchment unit; The excessive pollution sources in the area to be tested are determined according to the load thresholds of the plurality of target water bodies.

2. The monitoring and management method for watershed non-point source pollution according to claim 1 is characterized in that: The types of pollutants monitored by the monitoring component include total nitrogen, total phosphorus and chemical oxygen demand.

3. The monitoring and management method for watershed non-point source pollution according to claim 2 is characterized in that: The construction of a pollution monitoring network for the area to be tested includes: Acquire multiple pollution monitoring targets in the area to be tested; the pollution monitoring targets include a target water body, multiple water sources and multiple pollution sources; Determine any water source as the current water source; Taking the current water source as the starting point and the target water body as the end point, multiple pollution sources that the water body in the current water source flows through are connected in sequence along the flow direction of the current water source to obtain the current longitudinal monitoring line; Traverse all water sources in the area to be tested to obtain multiple longitudinal monitoring lines; Determine the outline of the target water body as an initial boundary; Taking the target water body as the center, an updated boundary is constructed outside the initial boundary; the distance threshold from the updated boundary to the initial boundary is smaller than the distance between any two pollution monitoring targets in the area to be tested; Determine the area enclosed by the initial boundary and the updated boundary as the current horizontal monitoring line area; Connect all pollution sources in the current horizontal monitoring line area to obtain the current horizontal monitoring line; The updated boundary is used as the initial boundary, and the process returns to the step of "taking the target water body as the center and constructing an updated boundary outside the initial boundary" until the horizontal monitoring line covers all pollution sources in the area to be tested, thereby obtaining a plurality of the horizontal monitoring lines; A monitoring component is respectively set at each pollution source in the area to be tested to obtain the pollution monitoring network.

4. The monitoring and management method for watershed non-point source pollution according to claim 3 is characterized in that: Before determining the excessive pollution sources in the area to be tested according to the load thresholds of the plurality of target water bodies, the method further includes: All pollution sources in the catchment unit whose current pollutant load is greater than the corresponding current pollutant load regulatory threshold are determined to be excessive pollution sources.

5. The monitoring and management method for watershed non-point source pollution according to claim 1 is characterized in that: Determining the excessive pollution sources in the area to be tested according to the load thresholds of the plurality of target water bodies includes: It is determined that all pollution sources on the longitudinal monitoring line whose current pollutant load is greater than the corresponding load threshold entering the target water body are excessive pollution sources.

6. A monitoring and management system for watershed non-point source pollution, characterized in that: include: A pollution monitoring network motor module is used to build a pollution monitoring network in the area to be tested; the pollution monitoring network includes multiple horizontal monitoring lines, multiple horizontal monitoring lines and multiple monitoring components; the monitoring components correspond to the pollution sources in the area to be tested one by one; the monitoring components are used to obtain the watershed surface source pollution data of the corresponding pollution source; the watershed surface source pollution data includes the amount of water flowing through the corresponding pollution source within a preset time period, and the average concentration of different pollutants within the preset time period; A current pollutant determination module, used to determine any pollutant as a current pollutant; A pollution load determination module, used to determine the pollution load of current pollutants of each pollution source in the test area according to the surface source pollution data of the watershed; The pollution load of the current pollutant of any pollution source is the product of the amount of water flowing through the pollution source during the preset time period and the average concentration of the current pollutant concentration during the preset time period; A load threshold determination module is used to determine the pollution load of the current pollutants of each longitudinal monitoring line according to the pollution load of the current pollutants of each pollution source in the area to be tested; Determine the sum of the pollution loads of the current pollutants of all longitudinal monitoring lines as the first total pollution load of the current pollutants; According to the total amount of water flowing into the target water body in the test area and the water quality requirements of the current pollutants in the target water body, according to formula F w-0 =Q*C0 / 1000, determine the total load threshold of the current pollutants entering the target water body; where F w-0 is the total load threshold of the current pollutants entering the target water body; Q is the total amount of water flowing into the target water body in the area to be tested; C0 is the water quality requirement of the current pollutants in the target water body; determine any longitudinal monitoring line as the current longitudinal monitoring line; determine the ratio of the pollution load of the current pollutant in the current longitudinal monitoring line to the first total pollution load of the current pollutant as the current weight value; determine the product of the current weight value and the total load threshold of the current pollutants entering the target water body as the load threshold of the current pollutants entering the target water body corresponding to the current longitudinal monitoring line; A multiple load threshold determination module is used to traverse multiple pollutant types and obtain multiple load thresholds for each pollutant entering the target water body in the test area; The monitoring and management system for watershed non-point source pollution is also used to determine the pollution load of current pollutants on each horizontal monitoring line according to the pollution load of current pollutants on each pollution source in the area to be tested; determine the sum of the pollution loads of current pollutants on all horizontal monitoring lines as the second total pollution load of current pollutants; determine any horizontal monitoring line as the current horizontal monitoring line; determine all pollution sources on the current horizontal monitoring line as the current water catchment unit; determine the ratio of the pollution load of current pollutants on the current horizontal monitoring line to the second total pollution load of current pollutants as the current weight value; determine the product of the current weight value and the total load threshold of current pollutants entering the target water body as the current pollutant load supervision threshold of the current water catchment unit; The excessive pollution source determination module is used to determine the excessive pollution source in the area to be tested according to the load thresholds of the multiple target water bodies.

7. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute a method for monitoring and managing watershed non-point source pollution as described in any one of claims 1 to 5.

8. An electronic device according to claim 7, characterized in that: The memory is a readable storage medium.

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