高锰酸盐复合药剂与氯联合控制消毒副产物的研究

Study on Controlling Disinfection by-product with Potassium Permanganate Composite and Chlorine

以北方某市受污染水源为研究对象,通过实验考察了高锰酸盐复合药剂(PPC)与氯联合控制消毒副产物-三卤甲烷(THM s)的效果.实验结果表明,1.0mg/L PPC可使预氯化过程中的THM s生成量降低14.1%,pH值为6.0时,PPC显著降低了预氯化工艺的THM s生成量,并且THM s生成量随pH值降低而减少;联合预氧化工艺的THM s生成量与单独预氯化相比降低了17.2%.因此PPC和氯联合可有效降低饮用水的THM s生成。

The experiments were carried out on controlling trihalomethanes （THMs） by potassium permanganate composite （PPC） and chlorine, with a raw polluted water sample from a city in northern China. The results indicated that the yields of THMs was reduced 14.1% by the PPC addition of 1.0mg/L during prechlorination process, the THMs yields was reduced with decreasing pH, furthermore, under conditions of pH 6.0, the addition of PPC resulted in obvious reduction of THMs yields. And the results of simulated distribution tests （ SDS tests） still showed that the THMs - SDS yields with combined preoxidation was reduced 17.2% than with prechlorination. Therefore, the combined prcoxidation by chlorine and PPC could reduce the THMs yields efficiently.