污染水中氰化物的化学氧化去除处理试验

摘要

Cyanide polluted water was treated by 3 kinds of oxidants: chlorines chlorine dioxide and ozone. The results show that the removal rate of cyanide is effected by the concentration of the oxidants, the removal rates of Cl2 was 98.6 %, which was higher than that of Cl2 and C1O2. Cl2 is recommended to be used in case of cyanide pollution accident happens to raw water.%采用含氰化物(CN-)的试验水样模拟城市取水水源地发生氰化物水污染事故,分别比较Cl2、ClO2和O3处理CN-的氧化效率,初步探讨三种氧化剂氧化降解CN-的机理,并考察投加浓度对CN-去除率的影响.试验表明,Cl2氧化CN-的效率较ClO2和O3高；用浓度为25.6 μmmol/L的Cl2处理由原水配制含CN-的试验水样,反应进行20 min,CN-去除率达98.6％,Cl2可用于应急处理氰化物水污染事故.