摘要
[目的 ]了解二氧化氯消毒饮用水产生的亚氯酸盐 (Cl O2 - )污染现状 ,并探讨其成因和对策。 [方法 ]选择 2个自来水厂 ,其中甲水厂以受轻度有机物污染的地面水为水源 ,乙水厂以未受有机物污染的地下水为水源 ,两个水厂均使用二氧化氯发生器 ,主要原料甲厂为亚氯酸盐 ,乙厂为氯酸盐。采用电流滴定仪法测定这 2个水厂出厂水中 Cl O2 -浓度。 [结果 ]出厂水 Cl O2 -浓度 :甲厂 0 .5 30～ 0 .76 0 mg/ L,为标准值的 2 .6～ 3.8倍 ,超标率 10 0 % ;乙厂 0 .10 0～ 0 .733mg/ L,其中超标浓度值范围 0 .2 5 7～ 0 .733mg/ L,为标准值的 1.3～ 3.7倍 ,超标率 83.3%。[结论 ]甲。
[Objective]To explore the status of chlorite pollution in drinking water due to chlorine dioxide ,as well as its causes and counter measures.[Methods]A water plant collecting surface water as raw water slightly polluted by organic compounds and B water plant collecting ground water without organic compounds pollution were selected as observed objectives.Chlorine dioxide generators were used in both of A and B water plants,their raw materials was chlorite for A plant and chlorate for B plant.The levels of chlorite in treated water from these two water plants were determined by amperometric titration.[Results]The levels of chlorite in treated water of A water plant ranged 0530~0760 mg/L, 26~38 times of the standard value,with a over standard rate of 100%,the levels of B water plant range 0257~0733 mg/L,13~3.7 times of the standard value ,with a over standard rate of 83.3%[Conclusion]The treated water of A and B water plants presented higher pollution by chlorite,the by-product of chlorine dioxide disinfection
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2000年第6期341-342,共2页
Journal of Environment and Health
关键词
饮用水
二氧化氯
消毒
亚氯酸盐
污染
Drinking water
Chlorine dioxide
Water disinfection
Chlorite
