走马塘排水对望虞河引水水质的影响  

Effect of Zoumatang drainage on water quality of Wangyu River diversion

作　　者：胡祉冰 逄勇[1,2] 胥瑞晨 汪静娴 HU Zhibing;PANG Yong;XU Ruichen;WANG Jingxian(Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098

出　　处：《水资源保护》2021年第2期135-140,共6页Water Resources Protection

基　　金：国家自然科学基金(51879070);国家科技重大专项(2018ZX07208-003)。

摘　　要：为量化望虞河引水枢纽移建后其引水水质受到上游走马塘排水的影响程度,通过建立长江江苏段二维水环境数学模型,选取总磷作为研究对象,量化了不同排水量方案下走马塘排水对望虞河引水枢纽处的水质影响,并提出了后期引水水质改善的措施。结果表明:走马塘排水对望虞河引水水质影响随潮汐波动,引水枢纽外移后望虞河引水总磷质量浓度最大增幅可达21.3%;提高走马塘排水水质可减小对望虞河引水枢纽处水质影响,采取间隔引水的方式对降低望虞河总磷质量浓度效果更为明显;在走马塘排水水质达到地表水环境Ⅳ类标准、停止排水48 h以后引水,可以基本控制总磷质量浓度增幅在1%以下。To quantify the effect of Zoumatang drainage on the water quality of Wangyu River after the transfer of water diversion project,a two-dimensional mathematical model of water environment for the Jiangsu section of Yangtze River is established,and TP is selected as the research object,and the influence of Zoumatang drainage on the water quality of Wangyu River diversion entrance under different schemes is quantified.The water quality improvement measures in the later stage of diversion were put forward.The results showed that the effect of Zoumatang River drainage on the water quality of Wangyu River diversion was affected by tidal fluctuation,and the maximum increase of TP concentration of Wangyu River diversion water quality could reach 21.3% after the entrance of the diversion project was moved outside.Improving the drainage quality of Zoumatang can reduce the impact on the water quality of Wangyu River Diversion Project.It is more obvious to decrease the concentration of total phosphorus in Wangyu River by the way of interval water diversion.When the water diversion is done after the water quality of Zoumatang reaches the standard of surface water environment IV and the drainage is stopped for 48 hours,the increase of total phosphorus concentration can be basically controlled below 1%.

关 键 词：引水水质 总磷 污染控制 水环境数学模型 走马塘 望虞河 

分 类 号：TV213.4[水利工程—水文学及水资源] X522[环境科学与工程—环境工程]