余姚市饮用水水源地安全评价

Safety Evaluation of Drinking Waterhead Areas in Yuyao

为了更好地保护饮用水源,保障饮水安全,对余姚市饮用水水源地按照湖库型、河道型、地下水型3种类别进行了功能区、水质情况的调查分析。利用影响水源地水量的枯水年来水量、工程供水能力因子构建了饮用水水源地的水量安全指标,利用影响饮用水水源地水质的一般污染物指数、有毒污染物指数、富营养化指数等构建了水质安全评价指标体系,通过对水量、水质指标的计算对余姚市水源地安全状况进行了评价。结果表明余姚市城乡饮用水水源地的水量水质是安全的,在饮用水水源地保护方面是成功的。

To protect drinking water resources,guarantee safe drinking of water,the functional zones and water quality of Yuyao drinking water sources are investigated,which are divided into three types of reservoirs,rivers and underground water.Considering the factors affecting the water quantity of the source areas,which include surface inflow in low-flow year and water supply capacity of engineering,water quantity safety evaluation indicator system is developed.Considering the factors affecting the water quality of the source areas,which include general pollutant index,toxic pollutant index and eutrophication,water quality safety evaluation indicator system is developed.These urity index is calculated through field data,which indicate that drinking water sources are safe and the protection of drinking water sources is successful.