River water quality comprehensive evaluation method and system

Abstract

The invention discloses a river water quality comprehensive evaluation method and system. The method comprises the steps of determining a river water quality evaluation factor and an evaluation section; collecting water quality basic data required by each evaluation section in the water quality evaluation process; calculating the comprehensive pollution index of each evaluation factor one by one by adopting an inner Meiluo index method to obtain a comprehensive pollution index sequence of each evaluation factor; performing weight calculation on the evaluation factors one by one by adopting a dynamic weighting method to obtain a weight sequence formed by weight coefficients of the evaluation factors; calculating a river water quality comprehensive evaluation index by adopting a weighted stacking method; and evaluating the river water quality condition according to the river water quality comprehensive evaluation index calculation result. According to the method, a brand-new river waterquality comprehensive evaluation system is established, the change degree of water quality data of each evaluation factor is considered, a core factor influencing the water quality condition is highlighted, the core factor is not excessively controlled by a certain single factor, and the evaluation result is more comprehensive and objective.

Description

technical field [0001] The invention relates to a river water quality comprehensive evaluation method and system, belonging to the technical field of water environment management. Background technique [0002] With the development of our country's society and economy, environmental problems have become the bottleneck restricting our country's development. The water environment is one of the important elements of the environment, the pollution is the most serious, and the pollution situation is very severe. Therefore, in order to realize the stable development of human society and the harmonious coexistence between man and nature, governments at all levels are actively carrying out comprehensive management of water environment. Scientific water environment management technology includes water quality evaluation, water environment governance planning, water environment decision support system development, water quality evaluation, etc. Among them, water quality assessment is...

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Problems solved by technology

my country stipulates that the worst single-factor evaluation method is used for surface water environmental quality. Its essence is to select the worst factor category among all participating factors as the overall water quality category. The evaluation results are pessimistic and do not have the ability to reasonably reflect the current comprehensive water quality status; Gray system evaluation method, fuzzy mathematics evaluation method, artificial neural network evaluation method and various methods used in combination have strict mathematical theory, but the calculation process is cumbersome and the results are often not comparable; the water quality identification index method and the water quality index method are simple and easy. used but the results are not intuitive

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