二氧化氯对水体消毒效果的试验观察

EXPERIMENTAL OBSERVATION ON DISINFECTION EFFECT OF CHLORINE DIOXIDE ON WATER BODY

目的观察一种由发生器生产的二氧化氯对水体消毒效果。方法采用滤膜法和现场消毒试验对某二氧化氯发生器产二氧化氯消毒液对染菌水样中大肠杆菌和现场水样的消毒效果进行观察。结果该发生器产生的二氧化氯消毒液含量为164.27 mg/L。在污染水样中投入浓度0.2 mg/L的二氧化氯,作用15 min,可使人工染菌水样中大肠杆菌下降至0 cfu/100 ml。在现场自然水样中投入浓度0.5 mg/L二氧化氯,作用30 min,可使水样中自然菌总数、总大肠菌群达到生活饮用水卫生标准规定。结论该二氧化氯发生器生产的二氧化氯在较低浓度条件下对污染水样和自然水样消毒效果均达到标准要求。

Objective To observe the disinfection effect of chlorine dioxide produced by generator on water body. Meth- otis Filter membrane method and on the spot disinfection test were used to observe the disinfection effect of chlorine diox- ide on water contaminated with Escherichia coli and water sampling on the spot. Results The content of chlorine dioxide produced by generator was 164. 27 mg/L. The number of Escherichia coli in contaminated water decreased to 0 efu/100 ml exposed to chlorine dioxide O. 2 mg/L for 15min. While exposed to chlorine dioxide 0. 5 mg/L for 30 rain in on the spot natural water the number of natural bacteria and total ciliform bacteria could meet the health requirements of standard regu- lation of drinking water. Conclusion The chlorine dioxide produced by generator can meet the standard requirement of disinfection effect in the comparatively low content.