Study of Ozone Disinfection of Purification Water System

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 quantificationally 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.