摘要
目的了解无锡市常用污水消毒剂次氯酸钠溶液和稳定性二氧化氯溶液的杀菌效果。方法以悬液定量法进行实验研究。结果以含有效氯10mg/L的次氯酸钠溶液作用15min,对金黄色葡萄球菌和大肠埃希菌的杀灭率≥99.98%;以含有效氯1200mg/L的次氯酸钠溶液作用45min,对枯草杆菌黑色变种芽孢的杀灭率为100%;以含4mg/L的二氧化氯溶液作用5min,对金黄色葡萄球菌和大肠埃希菌的杀灭率≥99.97%;以含80mg/L的二氧化氯溶液作用45min,对枯草杆菌黑色变种芽孢的杀灭率为100%。结论在相同试验条件下,二氧化氯比次氯酸钠杀菌效果好。
[Objective] To learn the germicidal efficacy of sodium hypochlorite and stable chlorine dioxide that were commonly used in sewage disinfection. [Methods] Suspension quantitative germicidal test was applied. [ Results] The killing rate of staphylococcus and Eschreiehia coli was ,above 99.98% after exposure to sodium hypoehlorite solution containing available chlorine 10 mg/L for 15 minutes; the killing rate of bacillus niger variant spores was 100% after exposure to sodium hypochlorite solution containing available chlorine 1 200 mg/L for 45 minutes; the killing rate of staphyloeoccus and Eschreichia coli was 99.97% after exposure to chlorine dioxide solution containing chlorine dioxide 4 mg/L for 5 minutes; the killing rate of bacillus subtilis var. niger spores was 100% after exposure to chlorine dioxide solution containing chlorine dioxide 80 mg/L for 45 minutes. [ Conclusion] The germicidal efficacy of chlorine dioxide is proved to be better than sodium hypochlorite under the same experimental condition.
出处
《职业与健康》
CAS
2005年第9期1294-1295,共2页
Occupation and Health
关键词
次氯酸钠
二氧化氯
枯草杆菌黑色变种芽孢
金黄色葡萄球菌
大肠埃希菌
杀菌效果
Sodium hypochlorite, Chlorine dioxide, Bacillussubtilis var. niger spores, Staphylococcus, Eschreichia coli, Germicidal efficacy
