Observation of disinfectant effect of chlorine dioxide reactor on drinking water

OBJECTIVE To observe the disinfectant effect of chlorine dioxide reactor in drinking water and its influencing factors.METHODS The quantitative suspension method,the membrane filter method were used to detect disinfectant effect against e.coli in 30 min by the chlorine dioxide reactor.RESULTS When chlorine dioxide content was 0.3 mg /L,e.coli decreased to 0 cfu /100 ml in 30min in artificial water;For natural water in 30m in,it also decreased to 0 cfu /100 ml,and the bacterial colony,coli groups and fecal coli groups were in line with(GB /T5750.12-2006) Standard Microbiology Indicators of Living and Drinking Water;pH of 5.0-9.0,and temperature of 10℃-30℃ had no influence on the results.CONCLUSION Low concentrations of chlorine dioxide in the water have good disinfectant effect against e.coli and are not influenced by pH and temperature.