泡腾消毒片对水消毒效果及影响因素的试验观察

EXPERIMENTAL OBSERVATION ON EFFICACY OF EFFERVESCENT DISINFECTION TABLET IN DISINFECTING WATER AND ITS INFLUENCING FACTORS

泡腾消毒片以有效氯为杀菌成分,为研究其对水中微生物杀灭效果及影响因素,采用悬液定量杀菌试验方法进行了试验观察。结果,泡腾消毒片以有效氯1 mg/L作用15 m in,可使人工染菌水样中大肠杆菌下降至0 cfu/m l;作用温度、pH值和有机物对其杀菌效果的影响不明显。以有效氯1 mg/L的泡腾消毒片溶解于水中作用30m in,对游泳池水达到消毒合格;有效氯30 mg/L作用1 h,对医院污水达到消毒合格。结论,该泡腾消毒片对水中大肠杆菌有良好的杀灭效果,受有机物影响小。

The effervescent disinfection tablet contains available chlorine as the germicidal component. In order to study its efficacy in killing microorganisms in water and its influencing factors, suspension quantitative germicidal test was used to carry out experimental observation. Results： The effervescent disinfection tablet containing available chlorine 1 mg/L with a 15 min contact time caused reduction ofEscherichia coli in artificially contaminated water sample to 0 cfu/ml. The temperature, pH and organic substance had no obvious influence on its germicidal efficacy. Dissolving the effervescent disinfection tablet containing available chlorine 1 mg/L in water resulted in eligible disinfection of swimming pool water after contact for 30 min. The effervescent disinfection tablet dissolved in water containing available chlorine 30 mg/L with a contact time of 1 hr gave rise to eligible disinfection of hospital sewage. Conclusion： The effervescent disinfection tablet has good efficacy in killing E. coli in water and it is little influenced by organic substance.