典型产业集聚区地下水污染风险评价与分区

Risk assessment and zoning of groundwater pollution in typical industrial clusters

为了明确地下水污染环境管控目标,快速识别高风险区,通过污染源—迁移转化途径分析,综合污染源潜在危害性和地下水脆弱性形成地下水污染风险评价方法,划定地下水环境高风险区。其中,以污染释放可能性、污染物潜在释放量和污染源生物毒性为主要因子的污染源潜在危害性评价体系;以DRASTIC模型为基础构建地下水脆弱性评价体系。以郑州市典型产业集聚区为例,进行地下水污染风险评价与分区,实践应用结果表明,地下水环境高风险区与园区污染源分布特征、地下水脆弱性特征存在紧密联系。该评价体系合理,结果科学可靠,可为地下水污染预防与管理工作提供有力的方法支撑。

In order to clarify environmental management objectives of groundwater pollution,the high-risk areas were identified quickly.Groundwater pollution risk assessment method was formed by analyzing the pollution source migration transformation path,integrating the potential hazards of pollution sources and groundwater vulnerability,and delimiting high-risk areas of groundwater environment.Among them,a potential hazard assessment system for pollution sources was established,with the main factors being the possibility of pollution release,the potential release amount of pollutants,and the biological toxicity of pollution sources.The groundwater vulnerability assessment system was constructed based on DRASTIC model.Taking the typical industrial cluster area of Zhengzhou City as an example,the risk assessment and zoning of groundwater pollution were carried out.The practical application results show that there is a close relationship between the high-risk groundwater environment area and the distribution characteristics of pollution sources and groundwater vulnerability characteristics of the park.The evaluation system is reasonable and the results are scientific and reliable,which can provide a powerful method support for the prevention and management of groundwater pollution.