臭氧不同作用方式杀菌效果比较

发布时间：2018-09-07 19:00

【摘要】：目的比较臭氧不同作用方式的杀菌效果,为实际消毒应用提供参考。方法采用载体和悬液定量杀菌试验方法,对臭氧气体熏蒸和臭氧水浸泡杀菌效果进行比较观察。结果该臭氧发生器在1 m3密闭箱中产生的臭氧浓度随机器运行时间增加而升高,运行60 min后臭氧浓度超过70 mg/m~3。密闭箱中气体臭氧浓度达到80.86 mg/m~3,作用90 min对载体上大肠杆菌杀灭率为96.90%。水中臭氧浓度为3.0 mg/100ml,作用5 min,对水中大肠杆菌平均杀灭率为99.92%。水中臭氧浓度为20.64 mg/L,作用30 min,对载体上大肠杆菌平均杀灭率为99.91%。结论臭氧气体熏蒸对载体上大肠杆菌杀灭效果较差,对水体中大肠杆菌杀灭效果最好。
[Abstract]:Objective to compare the germicidal effect of ozone in different ways, and to provide reference for practical disinfection application. Methods the bactericidal efficacy of ozone fumigation and ozone water soaking was compared by carrier and suspension quantitative germicidal test. Results the ozone concentration produced by the ozone generator increased with the increase of the operating time of the machine. After 60 min of operation, the ozone concentration exceeded 70 mg/m~3.. The concentration of ozone in the sealed chamber reached 80.86 mg/m~3, and the killing rate of Escherichia coli on the carrier was 96.90 min. The average killing rate of Escherichia coli in water was 99.92% when the ozone concentration was 3.0 mg/100ml, for 5 min,. The average killing rate of Escherichia coli on the carrier was 99.91 when the ozone concentration in water was 20.64 mg/L, for 30 min,. Conclusion Ozone fumigation is the best in killing Escherichia coli on the carrier.
【作者单位】：广东省微生物研究所华南应用微生物国家重点试验室;
【分类号】：R187

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