污水厂尾水排放对长江南京段水环境影响分析  

Analysis of the impact of sewage treatment plant discharge on the water environment of the Nanjing section of the Yangtze River

作　　者：蒋红 叶懿安 孙兆海 Jiang Hong;Ye Yian;Sun Zhaohai(Jiangsu province environmental engineering technology Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]江苏省环境工程技术有限公司,江苏南京210019

出　　处：《污染防治技术》2023年第6期61-64,共4页Pollution Control Technology

摘　　要：以南京长江段为例,通过建立二维非稳态水动力水质耦合模型,模拟预测南京市污水处理厂扩容对长江以及饮用水源地水环境质量的影响。结果表明,在设计工况下饮用水源地水环境质量未受到扩容后污水处理厂尾水排放影响,对长江南京段水环境质量污染带影响主要局限在排污口附近区域,化学需氧量(COD)污染带纵向最大影响距离为3.85千米,横向最大影响距离为1.2千米;氨氮(NH_(3) N)污染带纵向最大影响距离为5.6千米,横向最大影响距离为0.90千米。Taking Nanjing Yangtze River as an example,a two-dimensional unsteady coupling model of water quantity and quality was established to predict the impact of sewage treatment plant expansion on the water quality of the Yangtze River and drinking water source.The results show that under the design condition,the water quality of drinking water source is not affected,and the influence of the pollution zone on the water quality of the Yangtze River is mainly limited to the area near the sewage outlet.The longitudinal and lateral maximum impact distance of chemical oxygen demand(COD)pollution is 3.85 kilometre and 1.2 kilometre,and the longitudinal and lateral maximum impact distance of ammonia nitrogen(NH_(3) N)pollution is 5.6 kilometre and 0.90 kilometre。

关 键 词：长江 二维水动力水质模型 影响预测 

分 类 号：X522[环境科学与工程—环境工程]