Multi-estuary medium and small watershed water quality standard-reaching dynamic water supplementing amount prediction method

Abstract

The invention belongs to the technical field of water environment protection, and particularly relates to a multi-estuary medium and small watershed water quality standard-reaching dynamic water supplementing amount prediction method. The method comprises the following steps: analyzing pollution characteristics of medium and small rivers, and selecting key control indexes; based on EXCEL software,establishing a multi-reach basin high-precision dynamic water quality prediction model with a one-dimensional water quality model and a complete mixing model coupled, and calibrating model parametersaccording to online monitoring data and manual monitoring data; and predicting the water supplementing time and the water supplementing amount. According to the method, the online data and the waterquality prediction models of two pollutants are used for mutual verification, so that the accuracy of the models is improved. According to a quantitative response relationship between the river waterquality and the water replenishing amount established by the method, dynamic matching between a current water quality situation and the optimal water replenishing amount can be realized, and the problems of water resource waste or incapability of meeting the water quality standard, incapability of meeting the requirements of environmental managers and the like caused by non-real-time updating of the water replenishing amount are solved.

Description

technical field [0001] The invention belongs to the technical field of water environment protection, and in particular relates to a method for predicting dynamic replenishment of water in small and medium-sized watersheds with multiple estuaries. Background technique [0002] In the process of ecological restoration of urban rivers, ecological water replenishment is an important measure, which is of great significance for alleviating river pollution and restoring landscape functions. Ecological replenishment is widely used in river pollution control. At present, there are two directions of research on ecological water replenishment, one is the research on water replenishment to improve water quality; the other is research on ecological water demand to improve and restore the structure, function and self-regulation ability of river ecosystems. [0003] The prediction of water replenishment to improve water quality is generally based on water quality models. The water qualit...

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Problems solved by technology

[0010] In order to solve the above-mentioned technical problems, the present invention provides a method for predicting the amount of dynamic replenishment of water in small and medium-sized watersheds with multiple estuaries. This method solves the waste of water resources caused by the lack of timely real-time update of the amount of replenishment shown in existing methods. or failure to meet water quality standards, failure to meet regulator needs, and high cost of predictive models

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