Determination method of pollution load contribution rate of ring-shaped river network water quality assessment section based on water volume composition
A technology of pollution load and determination method, applied in the field of environmental management, can solve the problems of complex water source, complex destination and movement characteristics, difficult to determine the contribution rate of pollution load, etc., and achieve the effect of overcoming calculation problems.
Active Publication Date: 2022-05-06
HOHAI UNIV
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[0005] Purpose of the invention: In order to overcome the defects in the prior art that the water quality assessment section of the annular river network water system receives complex flow sources, destinations and movement characteristics, and it is difficult to determine the contribution rate of the pollution load, the present invention provides an annular river network based on water volume Determination method of pollution load contribution rate of water quality assessment section in water system
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0032] In this embodiment, a certain city (City A) in eastern China is taken as an example to analyze the contribution rate of the pollution load of the water quality assessment section. image 3 It is a town-level administrative division map of A. The area is low-lying, with many water conservancy projects, and the impact of tides makes the flow of the river channel uncertain. It belongs to a typical ring-shaped river network system. There are 3 national examination sections and 8 provincial examination sections in this city, and their spatial distribution is as follows Figure 4 shown. Organized, analyzed and generalized basic data such as meteorology, hydrology, water systems, water conservancy projects, land use, pollution sources, and water quality monitoring in city A, and constructed a mathematical model of the water quantity and qualit...
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The invention discloses a method for determining the contribution rate of the pollution load of an annular river network water system water quality assessment section based on water volume composition. Firstly, according to the water source of the river network system in the study area, various water components such as rainfall, sewage discharge, and water diversion are defined; secondly, the water volume ratio of each water quantity component at each water quality assessment section is calculated; then, point source wastewater is collected and pollutant discharge, calculate the water-weighted average concentration of various point source pollutants, and use the hydrological model and pollution load model to calculate the water production and pollution load of various land uses, and calculate the average concentration of non-point source pollutants; finally, Calculate the pollutant load contribution rate of the water quality assessment section. The invention solves the difficult problem of calculating the contribution rate of pollution load in areas with uncertain water flow direction, and is easy to popularize and apply in pollution traceability research in areas with similar reciprocating flow hydrological characteristics.
Description
technical field [0001] The invention belongs to the technical field of environmental management, and in particular relates to a method for determining the contribution rate of pollution load of an annular river network water system water quality assessment section based on water volume composition. Background technique [0002] The water quality assessment section refers to the sampling section set up to evaluate and monitor the impact of pollution sources on both sides of the river on the water quality and to control the discharge of pollutants. Quality rankings and other current environmental management needs. By quantifying the contribution rate of pollution discharge in each region (or pollution control unit) to the pollution load of the water quality assessment section, it is helpful to identify key pollution-producing areas, clarify the direction and focus of pollution control, and provide more targeted pollution control countermeasures and water quality. Environmenta...
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IPC IPC(8): G06Q10/06G06Q50/26G06F17/11
CPCG06Q10/0639G06Q50/26G06F17/11Y02A20/152G01N33/18Y02A20/20
Inventor 王鹏马乙心熊萍华祖林刘晓东褚克坚
Owner HOHAI UNIV