安徽省沱河沿河地区地下水水质现状

Current situation of groundwater in the area along the Tuo River in Anhui Province

通过对沱河沿河2km范围内地下水取样分析,查明了沿河地带村镇的地下水质现状,10m以浅地下水污染严重,以Ⅴ类水为主;10～20m地下水污染较轻,大部分为Ⅵ类水,其次为Ⅳ类水;20m以下地下水基本未受污染,水质较好,以Ⅶ类水为主。污染原因主要是河水污染、汛期河水倒灌、利用河水灌溉、化肥的过量使用、生活污水等。

Based on analysis of water sampled from a 2km range along the Tun River,this paper disclosed current situa- tion of the groundwater quality of villages along the Tun River： 0-10m groundwater, seriously polluted, mainly class V water; 10- 20m slightly polluted, mostly III, some IV; 20m and below, basically unpolluted, good quality, largely III. Pol- lution is substantially sourced from river water, backward flow from river in flooding season, river water irrigation, ex- cessive use of fertilizer and living sewage.