摘要：
预氯化是一种传统的应用比较广泛的预氧化技术,但其处理有机物浓度较高的水源水时不但生成大量对人体健康有害的消毒副产物,而且消毒性能下降,不利于多级屏障作用的发挥。因此,对受污染水源水进行预氯化处理时,安全强化其消毒效能是十分必要的。以受污染水为试验水样,从微生物安全性及化学安全性两个方面考察高锰酸钾与氯联用预处理工艺的消毒效能以及对三卤甲烷的控制作用。结果表明,高锰酸钾与氯联用预处理工艺的消毒效能要明显好于它们单独使用的情况,经Berenbaum公式计算证实高锰酸钾与氯在降低微生物指标上具有协同作用;与投药总量相同的预氯化工艺相比,高锰酸钾与氯联用预处理工艺处理受污染水时,在消毒效能上相当,而在副产物生成上,能够减少近60%的三卤甲烷的生成量。此项研究为受污染水的预处理提供了一个安全预氯化的新途径。
关键词:
高锰酸钾,
氯,
消毒效能,
三卤甲烷,
预处理
Abstract:
Pre-chlorination process is a conventional and widely applied pre-oxidation technique.But a great quantity of disinfection byproducts are produced easily which are harmful to human health and the inactivation effect decreases which is not beneficial to multiple barrier function,when it is applied to raw water with higher organic matters.Therefore,it is necessary to safely enhance the inactivation effect of pre-chlorination process when polluted raw water is pre-treated.The inactivation effect of combined application pre-treatment process with potassium permanganate and chlorine and the control function of trihalomethane (THMs) formation are investigated in both respect of microbial safety and chemical safety with polluted water.The results show that the inactivation effect of the combined application pre-treatment process with potassium permanganate and chlorine is clearly better than that of individual application with potassium permanganate or chlorine.It is confirmed by the Berenbaum formula calculation that potassium permanganate and chlorine are provided with synergism inactivation effect in respect of reduction of the microbial index.Compared with the pre-chlorination process with the same disinfectant dosage,the combined application pre-treatment process with potassium permanganate and chlorine is well-matched in inactivation efficacy,and the THMs production reduces over 60% in the respect of byproduct formation.This study provides a newapproach of safe pre-chlorination process for polluted water pre-treatment.
Key words:
potassium permanganate,
chlorine,
inactivation efficacy,
trihalomethane,
pre-treatment
中图分类号:
李星, 杨艳玲, 张岩, 李圭白, 何文杰, 韩洪大. 高锰酸钾安全强化预氯化工艺消毒效能的研究[J]. 工业水处理, 2005, 25(9): 23-26.
Li Xing, Yang Yanling, Zhang Yan, Li Guibai, He Wenjie, Han Hongda. Study of inactivation efficacy of pre-chlorination process safely enhanced by potassium permanganate[J]. INDUSTRIAL WATER TREATMENT, 2005, 25(9): 23-26.