Objective To study the bactericidal effect of ozone on staphylococcus aureus and disinfection ability of purified water storage tank and pipeline. Methods 0.98 mg/L ozone solution is prepared with JW-5 water treatment ozone generator, and its bactericidal effects on staphylococcus aureus and disinfection effect on purified water storage tank and pipeline are measured. The sample, which is quantification ally trained through membrane filtration-agar culture, is taken at different time to calculate sterilization rate. Results The sterilization rates of ozone solution against staphylococcus aureus in 5 min, 10 min, 30 min are 99.29%, 100%, 100%. The sterilization rates for purified water pipeline and storage tank in 10 min, 45 min and 60 min are 95.79%, 99.85% and 100%. Conclusion Ozone disinfection is an exact method in the course of purifying water system disinfection.%目的 研究臭氧对金黄色葡萄球菌的杀菌效果和对纯化水贮罐和管道的消毒能力.方法利用JW-5型水处理臭氧发生器制备浓度为0.98 mg/L的臭氧溶液,分别对金黄色葡萄球菌杀菌,对纯化水贮罐及管道消毒,在不同时间取样,经薄膜过滤-琼脂培养法定量培养,计算杀菌率.结果臭氧溶液对金葡菌作用5 min、10 min、30 min后,对金葡菌的杀菌率分别为99.29%、100%、100%;对纯化水管道和贮罐冲洗消毒10 min、45 min和60 min,杀菌率分别为95.79%、99.85%和100%.结论臭氧消毒效果确切,能满足纯化水贮罐和管道的消毒要求.
展开▼
