A method suitable for multi-source water quality and quantity regulation of small watershed rivers

Abstract

The invention provides a method suitable for multi-source water quality and quantity regulation of small watershed rivers, belonging to the technical field of environmental hydraulics. The method firstly collects the long series of daily and monthly water quality data of different adjustable water sources, and defines the water quality situation of different years and different periods of the diverted water sources; Then the coupling model of distributed hydrodynamics and water quality in small watershed is established by using EFDC model. Then the objective function of genetic algorithm modelfor multi-source dispatching is set according to the requirements of water diversion. The water restriction of diverted water source and ecological water requirement are further determined. Adoptingthe mathematical model of genetic algorithm, the allocation scheme set of water transfer quantity in different years and different periods is established. The EFDC distributed hydrodynamic and water quality model is used to simulate the changes of water quantity and water quality under different water diversion schemes. Finally, the best water transfer quantity in different years and different periods is selected. This method can realize the multi-source dispatching with the best water quality, the smallest economic cost and the most economical water resources after water transfer.

Description

technical field [0001] The invention relates to the technical field of environmental hydraulics and operational research, in particular to a method suitable for regulating water quality and quantity of multiple water sources in small watershed rivers. Background technique [0002] With the continuous improvement of people's requirements for the quality of the water ecological environment, the quality of the water ecological environment in small watersheds has attracted more and more people's attention. The use of water resource scheduling is an effective way to improve the water ecological environment of rivers and reservoirs, and it is also an effective way to solve the shortage of water resources. one of the methods. Most of the current water resource dispatching uses a single or the same type of water source for long-span and long-distance dispatching to improve the ecological water demand of large watersheds, reservoirs or lakes. Small watersheds have a variety of availa...

AI Technical Summary

Problems solved by technology

Most of the current water resource dispatching uses a single or the same type of water source for long-span and long-distance dispatching to improve the ecological water demand of large watersheds, reservoirs or lakes. Small watersheds have a variety of available water resources. There are large differences, such as groundwater, surface water, reclaimed water, reservoir water, etc., but there is a lack of water resource scheduling methods for how to make full use of various water resources in small watersheds to improve the quality of the water ecological environment

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