饮用水消毒副产物去除方法的评价

Assessment of Methods for Eliminating By Products Caused by Chlorination of Drinking Water

为了去除饮用水氯化消毒所产生的副产物 ,大都采取寻找替代氯的消毒剂和改进水处理方法两种途径。将氯与替代消毒剂臭氧、二氧化碳、氯胺的消毒效果进行比较 ,认为氯依然是主要的消毒剂 ,关键是要在加氯前去掉前驱物质 ,降低加氯量及接触时间 ,从而控制消毒副产物的生成。加强混凝、沉淀 ,高锰酸钾预处理 ,生物预处理 ,颗粒活性碳过滤四种改进水处理方法去除原水中前驱物质的效果各不相同 ,综合分析认为进一步发展的生物活性碳过滤的方式较优。

In order to eliminate the by products caused by chlorination of drinking water, both the way of replacing chlorization and improvement of water treatment method will be to find in the great majority of cases. Comparing chlorine with its replacing agent,such as ozone, carbon dioxide,chloramine, it shows that the chlorine is a major sterilization agent still in their sterilization effects. The key is to eliminate the precursor matter before chlorination, and to decrease the quantity of chlorine and its touch time so as to control the forming of by products. Strengthening coagulation, precipitation, pretreatment with potassium permanaganate, biological pretreatment, filtration with grain active carbon etc. improving water treatment methods, of which the effects are different.Through comprehensive analysis, it shows that the biological active carbon filtration manner is a better one for further developing. [