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目的观察CRⅢ-500型二氧化氯发生器所产生的二氧化氯对饮用水的消毒效果。方法采用悬液定量法对二氧化氯发生器运行30min后产生的二氧化氯杀灭水中大肠杆菌的杀菌效果进行实验室观察。结果所生成的二氧化氯含量为2mg/L时,对人工染菌水样作用15min,其中大肠杆菌下降至0CFU/100mL;对天然水样作用30min,大肠菌群下降至0CFU/100mL,且作用后天然水样的菌落总数、大肠菌群和粪大肠菌群均符合(GB/T5750.12-2006)《生活饮用水标准检验方法微生物指标》。结论 CRⅢ-500型二氧化氯发生器产生的二氧化氯含量达到2mg/L时,对饮用水能起到良好的消毒作用。
Objective To observe the disinfection effect of chlorine dioxide produced by CRⅢ-500 chlorine dioxide generator on drinking water. Methods Suspension quantitative method was used to observe the bactericidal effect of chlorine dioxide to kill E.coli in water after the chlorine dioxide generator was operated for 30min. Results When the content of chlorine dioxide generated was 2mg / L, the effect of artificial contaminated water samples was 15min, in which E. coli decreased to 0CFU / 100mL; for natural water samples for 30min, the coliform bacteria decreased to 0CFU / 100mL After the natural water samples of the total number of coliforms and fecal coliform are in line with (GB / T5750.12-2006) “drinking water standard test method for microbial indicators.” Conclusion The chlorine dioxide produced by CRⅢ-500 type chlorine dioxide generator achieves a good disinfection effect on drinking water when it reaches 2mg / L.