Method for constructing list of priority pollutant in surface water environment

Abstract

The invention discloses a method for constructing a list of priority pollutants in the surface water environment. According to the method, a specific list of priority pollutants in the surface water environment is constructed by employing a scientific weight assignment method according to the measured environment concentration of pollutants, wherein compound toxicity basic parameters, receiving water environment ecology and human health risks are included; and potential hazards of chemicals to the surface water environment and human health in the drainage basin are evaluated. According to the method, the problem that scientific evaluation is lacked or an evaluation system is not scientific and comprehensive enough in the existing priority pollutant screening process is solved, and the uncertainty caused by only considering the yield and emission of the pollutants or predicting the concentration of the pollutants in the environment through a model can be avoided.

Description

technical field [0001] The invention belongs to the field of environmental science and technology, and in particular relates to a method for constructing a list of priority pollutants in the surface water environment. Background technique [0002] In recent years, with the rapid development of social economy, the problem of environmental pollution caused by the extensive use and discharge of chemicals has become increasingly prominent. According to incomplete statistics, by the end of 2020, the number of chemicals registered in CAS has exceeded 170 million. Since 2013, the annual growth rate has been 25%, with an increase of 40,000 per day. So many chemicals entering the environment will destroy the original balance of the ecosystem, especially some toxic and harmful pollutants, which are also persistent, bioaccumulative, carcinogenic, teratogenic, mutagenic and endocrine disrupting. When chemicals enter the water environment, they can cause potential harm to aquatic ecosys...

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Problems solved by technology

[0003] At present, there are still some shortcomings in the process of constructing the list of priority pollutants in the surface water environment in my country: (1) Most of the selected parameters and models directly refer to foreign schemes, lacking model parameters and scoring standards for my country's actual local environmental conditions; ( 2) The screening of priority pollutants is mainly based on expert experience, which is highly subjective; (3) The screening indicators are not comprehensive enough, and the risk of human health exposure caused by pollutants is not considered

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