渭河水污染对杨凌区拟建水源地水质影响分析

EFFECTS OF POLLUTED WEIHE RIVER TO THE QUALITY OF PUMPED WATER NEAR THE RIVER IN YANG-LING AREA

杨凌农业高新技术产业示范区南临渭河 ,三维渗流数值模拟结果表明 ,拟建于渭河漫滩和一级阶地上的两个地下水水源地的开采将大大地激发渭河水对地下水的补给 ,使得已受污染的渭河水对拟建水源地的水质造成严重威胁。水质模拟结果表明 ,在未来开采条件下 ,热电厂水源地、水上运动中心及渭河近岸地带的地下水最容易受到渭河水污染的影响。

Yangling agricultural high tech demonstration area is located in the north of Weihe river. Three dimensional numerical modeling of the groundwater shows that the pumping of groundwater in flood plain and terrace of Weihe river will greatly increase the recharge of the river water to the groundwater. Therefore the polluted Weihe river will deteriorate the quality of groundwater to be pumped. Groundwater transport modeling results shows that the wells of thermoelectric plant, groundwater beside Weihe river, as well as the water in aquatic sports center can be easily polluted under future pumping conditions.