Administrative region groundwater environment risk assessment method based on GRRM model

Abstract

The invention provides an administrative region groundwater environment risk assessment method based on a GRRM model. The method comprises steps: a risk assessment unit is divided according to an administrative region, and the risk source pressure density of the risk assessment unit is calculated; with the groundwater quality and the groundwater supply ability as risk receptors, the risk receptor sensitivity is calculated; the damage degree of the risk source to the groundwater system and the risk receptor is determined, and an exposure response coefficient is obtained; a hydrogeological parameter is weighted comprehensively to calculate a groundwater anti-pollution performance index; and through a relative risk model, the groundwater relative risk assessment result is calculated and obtained, and in combination with the groundwater relative risk assessment result, the groundwater environment is characterized. Through acquiring the risk source pressure density of the risk assessment unit, the risk receptor sensitivity, the exposure response coefficient and the groundwater anti-pollution performance index, the groundwater relative risk assessment result can be calculated and analyzed comprehensively, quickly and accurately, and the reliability of the groundwater relative risk assessment can be improved.

Description

technical field [0001] The invention relates to the technical field of groundwater pollution analysis, in particular to a GRRM model-based administrative area groundwater environmental risk assessment method. Background technique [0002] In recent years, groundwater has been an important source of water supply in my country. According to the statistics of the "National Groundwater Pollution Prevention and Control Plan (2011-2020)", by 2009 the total amount of groundwater exploitation has reached 109.8 billion cubic meters, 65% of the domestic water in the northern region, 50 % of industrial water and 33% of agricultural irrigation water come from groundwater. Among the 655 cities in the country, more than 400 use groundwater as their drinking water source. At the same time, groundwater is also a common source of drinking water supply in rural areas of our country. Due to the substantial increase in the development and utilization of groundwater, large-scale exploitation of g...

AI Technical Summary

Problems solved by technology

The disorderly discharge of domestic sewage in cities and towns, the excessive use of pesticides and fertilizers, and the discharge of a large amount of industrial waste water have already made and are making many precious groundwater resources unusable due to pollution.

The groundwater environment is concealed and complex. The damage to the ecological environment and the harm to human health caused by groundwater pollution have long lacked due attention and have become a major challenge to the sustainable development of society and economy.

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