Underground water pollution stratification evaluation method based on specific polluted site

Abstract

The invention relates to an underground water pollution stratification evaluation method based on a specific polluted site. The method comprises steps of dividing evaluation into three levels through a pollution concept model and according to a relative position of a pollution source and an environment sensitive point, and starting with an area where a pollution source is furthest distant from the environment sensitive point, determining a prediction model of each level, collecting model parameters and determining a model parameter acquiring method, starting with the first level evaluation as a program evaluation point to evaluate, comparing target pollutant prediction concentration of each level evaluation terminal point and an evaluation standard, entering a higher level evaluation if the prediction concentration exceeds the evaluation standard, and otherwise ceasing the evaluation. Evaluation is divided into three levels; an evaluation terminal, a target pollutant concentration prediction model and evaluation standard of each level are clarified, so evaluation work for corresponding programs can be well guided and developed; the evaluation method is not only suitable for underground water pollution evaluation, but also suitable for evaluation of pollution to underground water within a site by unsaturation soil pollution.

Description

technical field [0001] The invention belongs to the technical fields of environmental impact assessment, polluted site investigation and assessment, and groundwater pollution assessment, and in particular relates to a specific polluted site-based groundwater pollution hierarchical assessment method. Background technique [0002] Groundwater resources are not only an important part of water resources, but also an important factor constituting the ecological environment, and play an important role in the sustainable development of the economy and society. According to statistics, 1 / 3 of my country's total water resources and nearly 20% of the country's total water supply come from groundwater. However, due to the impact of human sewage activities, the quality of groundwater in my country has gradually declined, and mass incidents caused by groundwater pollution have occurred from time to time. [0003] According to the information released by the China Institute of Geological...

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Problems solved by technology

[0007] Aiming at the problem that the groundwater pollution prediction and assessment method described in the existing groundwater environmental impact assessment technical guideline is too general and difficult to guide the development of specific groundwater pollution assessment projects, the present invention provides comprehensive pollution source and environmental sensitive target relative positional relationship, project characteristic pollutants Based on the behavioral characteristics of migrating from pollution sources to environmentally sensitive targets, a hierarchical assessment method for groundwater pollution based on specific polluted sites with strong operability is provided.

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