摘要
根据2010~2019年南太子湖水质监测年均值数据,结合水质综合污染指数和综合水质标识指数等分析评价方法,对南太子湖水质变化趋势及主要污染因子贡献率进行了分析。结果表明,近年来南太子湖水质整体提升,2019年水质综合指数明显下降;水质状况未达到Ⅳ类水质要求,TP是影响水质的首要指标,其次为TN、COD和BOD_(5)。通过调研排口及周边区域环境,得出农业污染、生活污水、底泥污染和城市径流等污染是造成南太子湖水污染的主要原因,建议采用控源截污、完善污水处理系统和清淤疏浚等措施改善水质。
Based on the water quality monitoring data of Nantaizi Lake from 2010 to 2019,the variation trends of the water quality and the pollution contribution of the main pollution index were analyzed by the water quality comprehensive pollution index and comprehensive water quality identification index analysis methods.The results showed that the overall water quality in Nantaizi Lake had been improved continuously,and the water quality comprehensive index significantly decreased in 2019.The water quality was mostly above the ClassⅣlevel and TP was the primary factor affecting the water quality,followed by TN,COD,BOD_(5).By investigating the sewage outfalls and the surrounding environment,the urban and rural domestic sewage,agricultural pollution,sediment pollution,surface runoff were the main causes of the water pollution in Nantaizi Lake.The treatment countermeasures such as controlling sources,improving the sewage treatment system and dredging should be adopted to realize the improvement of the water quality.
作者
蒋田雨
胡伟桐
钟云涛
秦祖殿
丰俊
张国娟
JIANG Tianyu;HU Weitong;ZHONG Yuntao;QIN Zudian;FENG Jun;ZHANG Guojuan(Wuhan Research Academy of Environmental Protection Sciences,Wuhan Hubei 430000,China;Wuhan Radioactive and Dangerous Solid Waste Pollution Management Center,Wuhan Hubei 430000,China;Wuhan Huazheng Environmental Testing Co.,Ltd.,Wuhan Hubei 430000,China;Wuhan Environmental Monitoring Center,Wuhan Hubei 430000,China)
出处
《环境保护科学》
CAS
2021年第4期112-116,126,共6页
Environmental Protection Science
关键词
南太子湖
水质评价
主要污染因子
污染成因
改善对策
Nantaizi Lake
water quality assessment
main pollution index
pollution causes
improvement countermeasure
