珠海市中小型水库水质综合评价

A comprehensive appraisement of water quality of medium or small reservoirs in Zhuhai

通过对珠海市20个中小型水库取水口的水样主要指标监测,运用水质指数法对其水质状况进行了分析及评价。结果表明:珠海市中小型水库水质状况良好,监测的20个中小型水库中,15个水库达到地表水二类水质标准,5个达到地表水三类水质标准;主要污染物为总氮,有三个样品的铁含量超过地表水标准限值,超过《生活饮用水卫生标准》限值,二个样品的硫化物超过《生活饮用水卫生标准》限值;作为饮用水需作进一步的处理。

The quality of water body in 20 medium and small reservoirs in Zhuhai was assessed using environmental quality index.The results show that the water quality of medium and small reservoirs in zhuhai is fine.Firstly,water quality in 15 reservoirs reached to the Grade II water quality standards while that in 5 reservoirs attained the Grade I water quality standards among the 20 medium and small reservoirs investigated.Secondly,the key pollutants were total nitrogen.Thirdly,the iron levels in 3 samples were over the limits of surface water and the standards for the daily drinking water.Meanwhile,the sulfide levels in 2 samples were over the standards for the daily drinking water.Finally,all of them need further treatment before serving as drinking water.