Agricultural non-point source pollution treatment method and device

Abstract

The invention discloses a method and a device for treating agricultural non-point source pollution. The method comprises the following steps: dividing a preset area into a plurality of basin basic measurement and calculation units; classifying the plurality of basin basic measurement and calculation units to obtain a plurality of basin type regions; selecting a typical drainage basin basic calculation unit from each drainage basin type area; establishing a pollutant type corresponding to the typical unit of each basin type area, a plurality of factors and a relationship of natural elements corresponding to each factor; obtaining a non-point source pollutant river entry coefficient corresponding to each drainage basin type area according to the plurality of factors of each drainage basin type area and the relationship; and determining the pollutant load capacity according to the coefficient so as to treat the non-point source pollution. According to the method, the pollutant load capacity can be scientifically and accurately determined nationwide through the obtained agricultural non-point source pollution river entry coefficient, so that the influence of the non-point source pollution on the water environment can be accurately determined, the non-point source pollution can be effectively treated, and the method has scientific guiding significance for improving the environment.

Description

technical field [0001] The invention relates to the technical field of pollution control, in particular to a processing method and device for agricultural non-point source pollution. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] With the technology, system, and regulations and standards of stationary source pollution supervision becoming more and more mature, non-point source pollution has gradually become a key factor affecting the quality of water environment. In many areas of our country, rivers and lakes are affected by the nutrients input by non-point source pollution, and there are different degrees of eutrophication, which seriously damages the function of water bodies, and there is a double pressure of resource water shortage and pollution water shortage. , posing ...

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Problems solved by technology

[0004] The traditional non-point source pollution load is calculated by combining the activity level of agricultural pollution sources and the pollution production and discharge coefficient. There are large differences in the mechanism processes of the generation, migration, transformation, and reduction of agricultural sources, resulting in large temporal and spatial heterogeneity in the production and discharge coefficients of the same agricultural source under different conditions. very difficult

If the production and discharge of agricultural source pollutants are generally used to represent their impact on the wa

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