沙湖水环境污染情况及治理措施浅析

Shahu Lake Environmental Pollution Situation and Control

2011—2017年沙湖水质由Ⅲ类下降为Ⅴ类,水环境质量变差,营养状态均为轻度富营养状态。经过采取外部隔离、内部循环、污水外迁、生态修改等综合治理措施,沙湖水质由2016年的劣Ⅴ类重度污染水质提升为2017年的Ⅴ类中度污染水质,2018年部分月份实现Ⅳ类轻度污染水质。沙湖水环境的提升,不仅改善了区域水环境质量,还为石嘴山市旅游业持续健康发展提供了良好的环境支撑。

The water quality of Shahu Lake has decreased from Class III to Class V between 2011 and 2017. The quality of water environment is deteriorating. The trophic state is in the state of mild eutrophication. After taking some comprehensive control measures, such as external isolation, internal circulation, waste water moving out, ecological modifications and etc., the water quality of Shahu Lake changed from the heavily polluted Class V water quality in 2016 into moderately polluted Class V water in 2017. In some months in 2018, the slightly polluted Class IV water quality could be found. The water environment enhancement of Shahu Lake could not only improve the regional water environment quality, but also could provide favorable environmental support for the healthy and sustainable development of tourist industry in the whole city.