长江水源水质特点以及处理工艺

Raw Water of Yangtze River

本研究通过调查、分析，对长江原水水质现状作了综合全面的评价，并掌握了其变化趋势。研究表明：长江原水水质的综合评价为Ⅱ级水源标准。陈行水库的蓄存作用对去除浊度、有机物、铁、锰等的效果非常显著，对由于水质变化而对水厂产生的冲击起了很好的缓解作用。由于取自陈行水库的水量增加，原水的浊度、有机物含量等有所增加。但由于陈行水库的缓冲作用，原水水质的变化不会很大。藻类不大会对水厂运行造成危害。另外对月浦水厂的处理工艺的调查表明现有的处理工艺基本适应长江水质。但在冬季低温低浊时，处理效果还不十分理想。如何处理低温低浊水源水仍是一个值得研究的课题。

Abstract A comprehensive assessment on the recent situation and the evolution tendency of water quality in the estuary of Yangtze River has been achieved on the basis of investigation and analysis of related quality indices for the raw water. The results have shown that the quality of raw water is adequate with integrative index to meet the class II of water resource standard. Notable removal of turbidity, organic compounds, Fe and Mn was observed at the transition reservoir Chenxing. This reservoir is very helpful to compensate the water quality shockloading caused by fluctuation in the river. Although the turbidity and organic contents raise somewhat due to increased abstraction they will not excessive the allowance owing to the moderation of the Chenxing reservoir. Also algae is not do harmful to the operation of waterworks. The investigation of the water purification process of Yuepu waterworks has shown that the treatment process is suitable to the raw water from Yangtze River in principal. But some poor purification appears in low temperature time in the winter. This is a question which needs further research deeply.