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《Journal of Hydroelectric Engineering》 2018-01
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Joint effect of pollution source interception and ecological water replenishment in Qinhuai River Basin

SONG Weiwei;PANG Yong;Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes,Ministry of Education,Hohai University;College of Environment,Hohai University;College of Hydrology and Water Resources,Hohai University;  
As China's urbanization accelerates,the population of large cities is growing rapidly.Urban waste water discharge is also increasing,resulting in surface water quality falling below the standards.This paper presents a prediction of surface water quality that is improved using combined measures-a near-future measure of intercepting a small portion of the sewage for treatment and replenishing a certain amount of ecological water and a long-term measure of intercepting most of the sewage for treatment-based on the requirements by the surface water quality standards.We examine different schemes in a case study of the Qinhuai River basin using the field survey data of water quality and a water quality mathematical model.The results show that in the near future(2017-2020),the surface water quality standards can be met through certain construction in this drainage area,intercepting 35% of the sewage for treatment,and replenishing ecological water of 30 m~3/s to the new Qinhuai River branch.And in the long term(2020-2025),apart from continuing the construction,the sewage treatment should reach Class Ⅳ and 80% of the sewage should be treated.Our joint method of sewage interception and ecological replenishment to braided river channels provides a new measure for improving surface water quality in the river basins where large cities are located.
【Fund】: 江苏高校优势学科建设工程资助项目;; 水体污染控制与治理科技重大专项(2014ZX07405-002);; 江苏省研究生科研与实践创新计划项目(KYCX17_0417)
【CateGory Index】: X52;X703
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