摘要
市政排水系统和泵站雨天短时间集中排放河道的雨污水已经成为上海世博园景观河道白莲泾水质污染的主要原因。建立了受闸门控制影响感潮河道白莲泾一维水动力水质模型,定量模拟周边市政雨水泵站放江对白莲泾水质影响过程;分析了泵站放江前污染负荷削减,通过闸门调度进行水体置换等多种污染控制方案;采用所建模型对各水质改善方案进行环境效果评估。结果表明,通过白莲泾新泵从黄浦江引水60 m3/s、削减50%泵站放江污染物负荷方案都对白莲泾水质有较好的改善效果,可使其水质水平达到相应水功能区要求。模型可为景观水体水环境治理、城市面源污染控制研究和决策提供科学技术手段。
Overflow discharges from municipal sewerage pumping stations in wet weather have become major pollution source to Bailian Jing, a tidal waterway in Shanghai. A one-dimensional hydraulic/water quality model for Bailing Jing had been set up and calibrated, and influences of the overflow from pumping stations were simulated. Based on several pollution control schemes concerning the pollution load reduction and ecological water transfer via sluice gate operation, various scenarios were simulated and their effects were evaluated. Results have shown that the water quality of Bailian Jing would be greatly improved either through diverting water from the Huangpu River by a new pumping station with a capacity of 60 m3/s or reducing 50% pollution loads from the overflow discharges so as to achieve its water quality requirements for relevant aquatic function zoning. It could therefore provide a way to deal with the rehabilitation of landscape water bodies and the urban non-point source pollution control.
出处
《上海环境科学》
CAS
2015年第2期70-74,81,共6页
Shanghai Environmental Sciences
关键词
城市污水管网
泵站放江
面源污染
水质模型
白莲泾
上海市
Municipal sewerage system Overflow discharge from pumping stationNon-point source pollution Water quality modelling Bailian Jing Shanghai City