Small watershed river and lake pollutant reverse accurate traceability method and system

Abstract

The invention discloses a small watershed river and lake pollutant reverse accurate traceability method. The method comprises the following steps: S1, dividing a control unit; s2, obtaining pollutionsource load and water quantity according to investigation and calculation, and obtaining a concentration field of pollutants under the action of each control unit by utilizing a pollutant distributioncharacteristic algorithm; s3, calculating and obtaining a response coefficient field of each sewage draining exit, a pollution sharing rate of each control unit and a water environment capacity in anormal state on the basis of the water quality of the exit assessment section; s4, calculating the water environment capacity of each control unit through the response coefficient field and the pollution sharing rate obtained in the step S3 on the basis of the target water quality of the exit assessment section; and S5, based on the control unit, comparing the water environment capacities under the normal state condition and the target water quality condition, and identifying the source of water pollutants. According to the method and system, the section hydrological process is combined with the water quality, so that the defect of environmental diagnosis based on pure water quality change is avoided.

Description

technical field [0001] The invention relates to the technical field of river pollution source control, in particular to a reverse accurate traceability system for river and lake pollutants in small watersheds. Background technique [0002] In recent years, due to the acceleration of urbanization and intensive human activities such as the use of chemical fertilizers in agricultural activities, the discharge of industrial wastewater and domestic sewage, etc., water pollution has become increasingly serious. Controlling and eliminating river pollution sources is the fundamental measure to prevent pollution. Therefore, understanding the source of pollutants in the water environment is an important prerequisite for effectively controlling river pollution, ensuring environmental safety and sustainable agricultural development, and the reverse traceability method used to determine the source of pollutants has attracted more and more attention from researchers. . [0003] In view ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a reverse accurate traceability system for river and lake pollutants in small watersheds consisting of assessment section-control section-sewage outlet-land area control unit, by combining the hydrological process of the section with the Combining water quality to avoid the deficiency of environmental diagnosis based on pure water quality change

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