Analysis of Disinfection Influencing Factors with Compound Chlorine Dioxide

Abstract

With the government speeding up the pace of the new disinfectant application and formulating standards, more and more municipal sewage plants are trying to deal with the problem of disinfection process selection and process adjustment. The experiment took the sample water of Fushun City Sanbaotun wastewater treatment plant as the research object, using the homemade compound chlorine dioxide generator to sewage sterilization. Through the detection of total bacterial count and fecal coliform bacteria in sewage sterilization with compound chlorine dioxide, finding out the optimal dosing concentration, contacting time, pH, stirring speed and other significant parameters. The results show that the optimal dosing concentration is 5mg/L, the contacting time is 4min, the stirring speed is 90r/min and the pH value has little effect. Under the condition, the compound chlorine dioxide can reach good disinfection effect, providing the technical basis for the development of disinfection process in the future.