台风导致的水库原水水质突变及其应对措施

Reservoir Raw Water Quality Mutation Caused by Typhoon and Its Response Measures

以宁波市某净水厂为例,研究了因台风导致的水库原水水质突变的过程,发现由台风引发的暴雨主要对水库原水的浊度、色度、氨氮、CODMn、铁、锰、微生物指标等产生影响,其中浊度是水质控制的重点;在强降雨开始对原水水质产生影响之后的36 h是水质控制的重点时间段,强化混凝是控制出厂水各项指标稳定达标的关键。

Taking a water treatment plant in Ningbo City as an example, the process of reservoir raw water quality mutation caused by the typhoon was investigated. It was found that the rainstorm caused by typhoons mainly affected the turbidity, chromaticity, ammonia nitrogen, CODMn, iron, manganese and microbial indexes of the raw water, and turbidity was a key index to be controlled. 36 hours after heavy rainfall began to affect raw water quality was the key period for water quality controlling. Enhanced coagulation was the key step for all the indexes to stably meet the standard in the water treatment plant.