武汉市区第四系含水层地下水有机污染敏感性研究

Vulnerability of Groundwater in Quaternary Aquifers to Organic Contaminants: A Case Study in Wuhan City, China

在详细调查武汉市水文地质条件和地下水污染现状的基础上 ,获得了高精度的武汉市水环境中微量有机污染物的组成数据 .所检测出的有机组分达 3 0余种 ,以苯及相关苯系物为主 ,污染程度较高的地下水主要分布在人口密集区和工业、商业区 .应用改进的DRASTIC模型———地下水污染敏感性评价模型 ,在GIS平台上 ,编制了武汉市区地下水污染敏感性分区图 .根据其评价结果 ,建议集中对那些敏感性相对较高的区域采取有效的环保措施 。

High resolution data about trace organic contaminant concentrations in aquatic environment of Wuhan were obtained in this study, on the basis of detailed hydrogeological and groundwater contamination investigations. More than 30 organic contaminants have been detected, in which benzene hydrocarbons are the most widespread. The seriously contaminated groundwater comes from densely populated, industrial and commercial areas. Applying the DRAMIC model proposed by the authors as an improved version of the widely used DRASTIC model to the assessment of the vulnerability of groundwater to contamination in urban areas, the authors draw a GIS based vulnerability map of Wuhan city. Finally, the authors propose some suggestions about environmental protection and risk management for highly vulnerable regions in line with the assessment results thus made in this paper.