高锰酸钾复剂对混凝时苯酚的强化去除效应

Enhanced Effect of Potassium Permanganate Composite Agent on Phenol Removal in Coagulation

通过对含酚水样采用高锰酸钾复剂预氧化,强化常规的混凝处理,分析了高锰酸钾复剂对混凝除酚的强化效应,结果表明:高锰酸钾复剂投加量为3mg/L时,苯酚的去除率比单纯使用聚合氯化铝时高70%以上。机理分析表明:高锰酸钾复剂的强化混凝作用主要是基于高锰酸钾氧化和中间产物新生态水合二氧化锰等的催化氧化的综合作用引起的。

The enhanced effects of potassium permanganate composite agent on the removal of phenol in the process of coagulation was studied through pre-oxidation of the sample of phenol-containing water by potassium permanganate composite agent to enhance the conventional coagulation treatment.The results showed that when the dose of potassium permanganate composite agent was3mg/L the removal rate of phenol was more than70%higher than the removal rate resulted from simply using polymerized aluminum chloride.It was shown by the analysis of the mechanism that the enhanced coagulation effect of potassium permanganate composite agent was mainly based on the combined effects of the oxidation of potassium permanganate and the catalytic oxidation of the intermediate product,which was the freshly formed hydrated manganese dioxide.