二氧化氯对水体消毒效果的观察  

OBSERVATION ON DISINFECTION EFFICACY OF CHLORINE DIOXIDE IN WATER

作　　者：李爱萍[1] 周景洋[1] 刘文杰[1] 董非[1] 杨彬[1] 崔树玉[1] 张岚 岳银玲[2] 

机构地区：[1]山东省疾病预防控制中心,济南250014 [2]中国疾病预防控制中心环境所

出　　处：《中国消毒学杂志》2011年第2期153-154,157,共3页Chinese Journal of Disinfection

基　　金："十一五"国家科技支撑计划重点项目(2006BAD01B05)

摘　　要：目的观察二氧化氯对水体中细菌芽孢的杀灭效果及其在水体中的衰减规律。方法采用滤膜抽滤法,对二氧化氯杀灭水体中枯草杆菌黑色变种芽孢的效果进行了实验。结果在人工染菌水样中投放二氧化氯浓度为20 mg/L,作用45 min,可使水体中枯草杆菌黑色变种芽孢降至为0 cfu/100 ml。作用5 min,水样中二氧化氯浓度下降率为0.95%;作用30 min后,水样中二氧化氯残留浓度为9.05 mg/L,下降率为54.84%。结论水体中二氧化氯在较低浓度下,具有良好的杀灭细菌芽孢的效果;水体中二氧化氯持续作用30 min,其浓度下降率约50%左右。Objective To observe the germicidal efficacy of chlorine dioxide on killing bacterial spores and the decaying rules water. Methods Membrane filtration method was used to observe the germicidal efficacy of chlorine dioxide in killing spores of Bacillus subtilis var.niger in drinking water. Results The spores of B.subtilis var.niger exposed to the solution containing chlorine dioxide 20 mg/L for 45 min decreased to 0 cfu/100ml.The declining rate of residual chlorine dioxide concentration was 0.95% for 5 min.The residual chlorine dioxide concentration was 9.05 mg/L and the declining rate was 54.84% for 30 min. Conclusion Chlorine dioxide with relatively low concentration in water has good germicidal efficacy on spores.The declining rate is about 50% when the chlorine dioxide keeps on operating for 30 min.

关 键 词：二氧化氯 水体消毒 枯草杆菌黑色变种芽孢 杀灭效果 

分 类 号：R187.1[医药卫生—流行病学]