几种预氧化工艺在低温水中消毒效能比较

实验以细菌总数为检测指标，在实验室观察了高锰酸钾、氯、氯胺单独预氧化工艺，以及高锰酸钾与氯或氯胺联用预氧化工艺的消毒效果随水温的变化，并比较了几种预氧化工艺在低温水中的杀菌效能，探讨低温水中杀菌效能较高的预氧化工艺．结果表明，在一定时间范围内，水温对几种预氧化工艺消毒效能均有程度不同的影响，通过比较几个工艺消毒时的Q10值得出如下结论：高锰酸钾与氯或氯胺联用预处理工艺的消毒性能受温度的影响程度明显小于单独氯、氯胺及高锰酸钾工艺，而且，高锰酸钾与氯或氯胺联用工艺处理低温、污染严重的地表水的消毒性能明显好于单独的氯、氯胺及高锰酸钾工艺，为我国北方地区冬季处理受污染水源水提供了一种安全预处理技术。

Comparison of inactivation efficacy in low temperature water with several pre-oxidation processes

The total count of bacteria is regarded as monitoring index in this paper. The inactivation effect with the change of water temperature are reviewed in laboratory with individual application pre-oxidation process of potassium permanganate, chlorine and chloramines, and with combined application pre-oxidation process of potassium permanganate with chlorine or chloramines. The inactivation efficacies of several pre-oxidation processes are compared with low temperature water, and the pre-oxidation processes with better inactivation efficacy is approached. The results showed that the inactivation efficacies of several pre-oxidation processes are influenced between different degree by water temperature within certain time. The conclusion is as follows by compared the Q_(10) value of several processes: the temperature influence to inactivation effect with the combined process is clearly less than that with the individual process. The inactivation effects of the combined process with low temperature and seriously polluted surface water are obviously better than the individual process. This paper provides a safe pretreatment technique of polluted water in the winter of north China.