Comprehensive water quality evaluation method

Abstract

The invention discloses a comprehensive water quality evaluation method. The method comprises the steps of index value quantification of pollution factors, the determination of a heaviest pollution factor, pollution factor pollution degree quantification, average pollution index determination, comprehensive pollution index determination, water quality class determination and evaluation and the like. The method is simple, possesses universality and is easy to popularize. By using the water quality evaluation method, the influence degrees of different pollution factors are simultaneously considered, the effect of the heaviest pollution factor is emphasized and the accuracy of a determination result is increased.

Description

technical field [0001] The invention belongs to the technical field of water environment detection, and in particular relates to a comprehensive water quality evaluation method for evaluating water environment quality. Background technique [0002] Water quality is the guarantee of water supply safety, and the method of water quality evaluation is the key technology to ensure water supply safety. The simple, fast and effective evaluation method has attracted much attention, and the research on water quality evaluation method has been paid more and more attention by relevant institutions. The single factor index method compares and classifies the actual measured value of the pollution factor with the standard of the corresponding water quality category, and selects the category with the worst water quality as the evaluation result. It is comparative, and even the same category of water quality cannot compare its pollution degree, cannot reflect the overall water quality of th...

AI Technical Summary

Problems solved by technology

The single factor index method compares and classifies the actual measured value of the pollution factor with the standard of the corresponding water quality category, and selects the category with the worst water quality as the evaluation result. It is comparative, and even the same category of water quality cannot compare its pollution degree, cannot reflect the overall water quality of the water body, and cannot comprehensively consider various pollution factors

For this reason, the academic community has proposed evaluation methods such as cluster analysis, fuzzy water pollution index method, water pollution index method, and comprehensive water quality evaluation method. Among them, the cluster analysis method is mostly aimed at judging the level of water bodies, and there is a problem of insufficient description of pollution factors; The fuzzy water pollution index method can compare the water quality of the same kind by quantifying the water quality status, but it does not solve the mutual comparison between different types of water quality and the judgment of water bodies inferior to Class V; the water pollution index method (WPI) can judge water bodies inferior to Class V. It can judge the degree of water pollution, but it cannot emphasize the role of different pollution factors, which is not conducive to popularization; the comprehensive water quality evaluation method can consider the influence of multiple pollution factors, but there are insufficient judgments of pollution factors, and the disadvantages of major pollution factors cannot be emphasized

[0003] Since there are many water quality evaluation methods, different evaluation methods have different emphases, and most of them have certain limitations. At the same time, water bodies have different forms of existence such as surface water and groundwater. At present, there is no uniform water quality evaluation method.

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