地下水水源地污染预警应用研究——以浑河冲洪积扇为例

Application study of groundwater pollution early warning in source field:A case study in alluvial-pluvial fan of Hun River

地下水水源地污染预警是集中城镇供水的地下水资源保护和管理的重要依据。为了控制地下水污染,使地下水保护更具预见性和主动性,提出了基于水质现状和污染风险的地下水水源地污染预警思路。水质现状是预警基础,决定预警的起始状态;污染风险考虑了污染源载荷风险和污染危害性,反映人类活动对地下水的影响,决定区域污染状况的发展变化。以浑河冲洪积扇饮用水水源地为例,通过各因子的评价和叠加分析得到地下水水源地污染预警值,结果显示浑河冲洪积扇地区大部分水源地存在不同程度的污染警情。研究结果可为当地地下水水源地保护提供依据。

Early warning of groundwater pollution in source field is an important base for water resource protection and management.In order to control groundwater pollution and improve the predictability and the initiative of groundwater protection,this paper proposed a new way for groundwater pollution early warning,based on current water quality status and pollution risk.Current water quality is a basement and it determines the initial state of pollution early warning.Pollution risk includes pollution sources load and pollution hazard,which reflects the influence of human activities on groundwater and determines the development of regional pollution.This paper took the drinking water sources in alluvial-pluvial fan of Hun River as an example and evaluated the early warning value through factor assessment and overlay analysis.The results indicated that most groundwater source fields in alluvial-pluvial fan of Hun River had suffered from pollution to some degrees.These results can provide certain theoretical foundation for local groundwater sources protection.