Water-quality simulation method based on control-unit water-environment-quality target management

Abstract

The invention provides a water-quality simulation method based on control-unit water-environment-quality target management. The water-quality simulation method includes the steps that a database is built; a land-field control unit and a river-way subunit are divided; the flow, the area of the water surface and the volume of a water body of calculation unit grids are simulated through a hydraulicsmodel; the generation quantity of non-point-source pollutants in pollution sources is calculated through an output coefficient model, and the in-river sewage amount and the pollution load concentration of pollutants of a pollutant discharging opening are calculated; the water quality of the calculation unit grids is simulated through a one-dimensional water-quality model. In the water-quality simulation method, an emergent risk accident pollutant-discharging water-quality model is also used, and is used for simulating transmission of accident pollutants in a river network and the changing condition of the water quality of a downstream drainage basin after emergent-water-environment-risk-accident pollutant discharging.

Description

technical field [0001] The invention belongs to the field of water environment monitoring, management and protection, and in particular relates to a water quality simulation method based on control unit water environment quality target management. Background technique [0002] The control unit mentioned in the water environment planning and management refers to the division of the watershed area as a unit, and puts forward control measures for the concentration and total amount of pollution discharge in the unit, and finally achieves the purpose of restoring and maintaining the water environment quality of the watershed. The water quality target management based on the control unit is a kind of water environment capacity total control technology. [0003] Establishing the water quality model of the watershed is a key technical point to realize the water quality target management of the control unit. By selecting an appropriate water quality model and establishing the input-r...

AI Technical Summary

Problems solved by technology

Modeling research on environmental management in my country started relatively late. In recent years, although foreign models such as SWAT, MIKE BASIN, and SPARROW have been applied experimentally in some watersheds in my country, the models require professional and technical personnel to operate, basic data are difficult to obtain, and model verification is difficult. Various problems such as the lack of method standards have seriously limited the popularization and application of the model, and are far from meeting the actual needs of scientific, standardized, and normalized environmental planning and management.

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