上海市青松片水功能区水质保护措施

对上海市青松片水功能区的划分及确定的水质保护目标进行了回顾和分析,提出了存在的问题。根据实测和数学模型分析的成果,针对性地提出了改善和保持青松片水功能区水质的保护措施:①削减、截流污染源,在排污量中,约80%的COD,约67%的BOD5和约90%的NH3-N是分散禽畜排泄的,因此保护措施的重点是削减面源污染;②引清冲淡,利用黄浦江潮位变化高潮引水和低潮排水或利用泵站引排水,可以适当改善青松片内部分河道的水质;③底泥疏浚。

Water quality protection measures of water function regions in the Qingpu and Songjiang districts of Shanghai

The water function regionalization and the goal of water quality protection in the Qingpu and Songjiang districts of Shanghai are analyzed and the existing problems are discussed.Based on data from field measurement and mathematical modeling,three measures are proposed for maintaining and improving the water quality of the water function regions in this area.The first measure is to control the pollution sources.As about 80% of CODCr,67% of BOD5 and 90% of NH3-N in the contaminants are produced by livestock breeding,the emphasis of the measure should be placed on non-point pollution sources.The second measure is to divert clear water to the polluted rivers.Diverting the clear water from the Huangpu River during high tidal levels,draining polluted water to the Huangpu River during low tidal levels,or utilizing the pumping station to pump in or pump out the water from or to the Huangpu River can improve water quality in parts of the rivers in the Qingpu and Songjiang districts.The final protection measure is sediment dredging.