基于危害性分级的地下水污染源分类识别方法

地下水污染源分类识别是有序开展地下水污染防控工作的前提。以典型地下水污染源为研究对象,建立综合考虑优控污染物、污染源特征的地下水重点污染源识别指标体系,以污染源危害性评价结果作为重点污染源的判别依据。将哈斯(Hasee)图解法与综合评分法相结合,用于地下水优控污染物识别,同时引入修正的内梅罗综合污染指数法,对多组分的地下水优控污染物开展综合评价,并选择3个典型地下水污染源进行分类识别方法实地验证。结果表明:污染源S1、S2和S3的危害性等级分别为Ⅲ、Ⅲ、Ⅱ。在区域地下水污染分类防控与分级管理中,应对危害性等级较高的污染源S1和S2加以重点关注。

Identification and classification methods of groundwater pollution sources based on hazard classification

The classification and identification of groundwater pollution sources is essential for groundwater pollution prevention and control. The typical groundwater pollution sources were studied and the major groundwater pollution sources identifying index system established based on the priority control contaminants and pollution sources characteristics analysis results. The pollution sources hazards assessment results were regarded as the basis for the major groundwater pollution sources identification. The Hasse diagram method and comprehensive evaluation method were applied to identify priority control contaminants, and the revised Nemerow Pollution Index introduced to comprehensive assess the multicomponent priority control contaminants. Three typical groundwater sources were selected to verify the method. The results showed that the hazard level of S1, S2 and S3 was Ⅲ, Ⅲ and Ⅱ, respectively. Thus, in the management of regional groundwater pollution sources, more attention should be paid to the sources with high levels of hazard pollution, such as S1 and S2.