Groundwater pollution source strength evaluation method

Abstract

Provided is a groundwater pollution source strength evaluation method. The method includes: determining the classified condition of an evaluation site with the combination of the hydrogeological condition around the site according to the construction condition of an industrial site and the implementation condition of seepage prevention measures; dividing the protection grade of vadose zones into three grades of "strong", "medium", and "weak" according to the classified condition of the industrial site, and the thickness and the permeability coefficient of the vadose zones; determining vulnerability indexes and scores of the vadose zones by employing a DRTAS model with the combination of characteristics of the vadose zones, and determining the resistance control classification of the vadose zones according to the protection grade and the vulnerability scores of the vadose zones; determining characteristic indexes of a pollution source and weights thereof by employing overlay and index methods with the combination of characteristics of the pollution source, thereby performing classification of harmfulness of the pollution source; and establishing a groundwater source strength classification evaluation method according to classification matrix coupling, and evaluating the groundwater pollution source strength of the industrial site. According to the method, the groundwater pollution source strength of the industrial site can be accurately evaluated, and scientific basis is provided for the protection and management of groundwater.

Description

technical field [0001] The invention relates to the technical field of environmental assessment, in particular to a method for evaluating the intensity of groundwater pollution sources. Background technique [0002] The evaluation of the strength of groundwater pollution sources in industrial sites needs to establish an evaluation index system suitable for the actual situation in my country based on factors such as the type, distribution, pollutant composition, hydrogeological conditions, and environmental impact characteristics of groundwater sources, so as to provide a basis for the utilization and management of land resources in industrial sites. Provide a scientific basis for the control, overall planning and management of groundwater pollution. [0003] Many scholars have conducted research on groundwater pollution. Zhou Changsong et al. used the DRASTIC model to establish the PCSM-AHP evaluation system to evaluate the groundwater in the Jingsheng Basin. Lei Jing and Z...

AI Technical Summary

Problems solved by technology

[0004] Although my country has made great progress in the risk assessment of groundwater pollution, in general, the degree of research on the risk assessment of groundwater pollution in my country is relatively low. The selection of evaluation methods, evaluation index systems and parameters refer to foreign research results. There are few studies on the site, so it is necessary to increase support for risk assessment research, and gradually establish and improve technical documents such as guidelines and technical guidelines for groundwater pollution risk assessment that are suitable for my country's national conditions

At present, the methods and systems for evaluating the strength of groundwater sources in industrial sites have not been established in China, and there is a lack of scientific basis. There are few studies on the main controlling factors in the system.

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