Water sudden pollution accidental risk assessment method and apparatus

Abstract

The present method discloses a water sudden pollution accidental risk assessment method and apparatus. The method comprises: obtaining acute biotoxicity data of a targeted contaminant on all species, screening on the acute biotoxicity data according to a preset toxicity data regulation, and obtaining screened acute biotoxicity data; using screened acute biotoxicity data of all species, calculating a species average acute toxicity value of each species respectively; as for the species average acute toxicity value of a plurality of species corresponding to the targeted contaminant, sorting in an ascending order, and obtaining a sensitive sorting queue; and performing statistic on quantity of species average acute toxicity value contained in the sensitive sorting queue, performing risk grades dividing based on statistical quantity and a preset classified risk coefficient, and constructing a mapping relationship between a divided risk grade and a risk indicated aquatic organism. According to the method, risk assessment efficiency for the sudden water environmental pollution accident is improved.

Description

technical field [0001] The invention relates to water environment ecological technology, in particular to a method and device for assessing the risk of sudden water pollution accidents by using biological sensitivity. Background technique [0002] Water is a resource that every species on earth depends on for survival. With the increasing population, the per capita water resources are decreasing. At the same time, with the rapid development of modern industrial and agricultural economy, the water environment is facing serious threats from various pollutions, such as domestic sewage, factory chemical pollution, sewage discharge Waste discharge and excessive pesticide and fertilizer pollution applied on farmland. That is to say, while the per capita water resources are decreasing, the water quality and functional water shortages caused by the deterioration of the water environment are also becoming more and more prominent, which has become a prominent and global common techni...

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Problems solved by technology

Among them, the water quality standard refers to the allowable concentration of various pollutants in the water environment expressed by credible scientific data for the purpose of protecting human health and ecological balance. After a pollution accident occurs, it is necessary to measure the pollutants exceeding the standard. The time required is long, which is not conducive to timely and fast determination of risk levels, making the assessment of water pollution accidents less efficient; furthermore, China's water quality standards generally adopt foreign water quality standards. Due to my country's vast territory, water quality in different regions The environment has obvious differences in terms of water quality characteristics, biodiversity characteristics, and ecosystem structural characteristics.

Therefore, there are widespread doubts about the applicability of foreign water quality standards in China, making the method of risk classification assessment based on the multiples of pollutants exceeding the standard, the reliability and accuracy of the assessment questioned

Moreover, in sudden water environmental pollution accidents, the multiples of pollutants exceeding the standard are high, and the existing risk assessment methods for pollution accidents have not established a clear relationship between the multiples of pollutants exceeding the standard and the risk level for sudden water environmental pollution accidents , making it difficult to judge and evaluate the risks caused by sudden water pollution accidents

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