发生器产二氧化氯对水消毒效果的试验观察

为了解GZD99-50A二氧化氯发生器生产的二氧化氯对水的消毒效果,采用滤膜法检测其对大肠杆菌的杀灭效果。结果,该二氧化氯发生器产生的二氧化氯消毒液有效氯含量平均为235mg/L,二氧化氯含量平均为70.02mg/L。当该二氧化氯消毒液在水样中有效氯含量为1.0(二氧化氯0.3)mg/L作用3min时,可使人工染菌水样中大肠杆菌和现场水样中大肠菌群下降至0cfu/100ml;作用2min,可使天然水样中大肠菌群下降至0cfu/100ml。pH值和有机物对该消毒液杀菌效果影响不明显。

EXPERIMENTAL OBSERVATION ON EFFICACY OF CHLORINE DIOXIDE GENERATED BY GENERATOR IN DISINFECTION OF WATER

In order to know the efficacy of chlorine dioxide generated by GZO 99-50A chlorine dioxide generator in disinfection of water, filter membrane method was used to examine its efficacy in killing Escherichia coli. The results indicated that the average available chlorine content of the chlorine dioxide disinfectant solu- tion generated by the chlorine dioxide generator was 235 mg/L and the average chlorine dioxide content was 70.02 mg/L. When the available chlorine content of the chlorine dioxide disinfectant solution in the water sample was 1.0 (chlorine dioxide 0.3) mg/ L, Escherichia coli in the artificially contaminated water sample and the field water sample decreased to 0 cfu / 100 ml after exposure for 3 min and the coli-group in natural water sample decreased to 0 cfu/ 100 ml after exposure for 2 min. pH value and organic substance had no significant influence on its germicidal efficacy.