Method for evaluating pollution risks of local ground water

A groundwater pollution and risk assessment technology, applied in the field of risk assessment, can solve problems such as the accuracy and precision of impact assessment results, fuzzy indicators of groundwater pollution risk, and failure to consider the particularity of the assessment area.

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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Problems solved by technology

At present, the DRASTIC evaluation method is mainly used at home and abroad to study the susceptibility of groundwater pollution, and the fuzzy evaluation of groundwater pollution risk is carried out in combination with the risk of pollution sources. However, due to its fixed indicators, this method does not consider the particularity of the specific evaluation area (regional characteristic pollutants, special hydrogeolog

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  • Method for evaluating pollution risks of local ground water
  • Method for evaluating pollution risks of local ground water
  • Method for evaluating pollution risks of local ground water

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Embodiment Construction

[0080] The specific implementation method of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0081] Example: Risk assessment of groundwater pollution in a city in southern Jiangsu

[0082] 1. Overview of the study area

[0083] A city is a flat and wide alluvial lake plain. The thickness of the Quaternary loose sediments is relatively large (generally above 150m), mainly in fluvial facies with coarse-grained sediments, and the sediment grains range from fine to coarse from top to bottom. The water-bearing sand layer is extremely developed, and the groundwater resources are extremely rich. The lithology of the aquifer is mainly composed of upper Pleistocene alluvial and alluvial lacustrine gray-gray yellow silt, fine sand and silt. The lithology of the northern riverside belt is mostly silt-fine sand and medium-fine sand, and the thickness of the sand layer is relatively large, generally between 15 a...

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Abstract

The invention relates to the fields of environmental science, environmental risks and environmental management, in particular to an evaluation method for comprehensively evaluating the pollution risks of ground water by utilizing multi-index and spatial visualization technologies. The vulnerability of the local ground water, the value of the ground water, the characteristics of a pollution source and the risk evaluation of population health are integrated, and a geographic information system (GIS) platform is used for configuration representation to visually evaluate the pollution risks of the local ground water, so that evaluation accuracy is improved, and an evaluation result can be conveniently and directly felt. The method comprises the following steps of: (1) selecting main factors for pollution to the local ground water, such as the vulnerability of the ground water, analysis on the pollution source, the value evaluation of the ground water and health risks, establishing a multi-index local ground water pollution risk evaluation index system, and evaluating the risks of local pollution, particularly local characteristic pollutants by adopting a corresponding method; and (2) superposing local ground water pollution risk indexes on the basis of a GIS graphic technology to obtain a risk graph. Therefore, the pollution risks of the local ground water are visually evaluated.

Description

technical field [0001] The invention belongs to the fields of environmental science, environmental risk and environmental management, and in particular relates to an evaluation method for comprehensively evaluating the risk of groundwater pollution by using multi-index and space visualization technology. Background technique [0002] Groundwater is an important part of the water cycle, an important water source for urban water supply in my country, and one of the important drinking water sources. With the increasing development of groundwater resources, its pollution is becoming more and more serious. Such as pollution by agricultural non-point sources and urban rainwater runoff; direct discharge pollution of sewage and solid waste generated by urbanization and industrialization; pollution from mining and waste gas pits; salt water intrusion caused by excessive exploitation of groundwater and pollution of natural harmful substances Dissolution leads to deterioration of grou...

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Application Information

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IPC IPC(8): G06Q10/00
Inventor 杨彦王宗庆李定龙陆晓松刘亮
Owner CHANGZHOU UNIV
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