Disinfection effect of chlorine dioxide on bacteria in water

In this paper, the disinfection effects of chlorine dioxide (ClO2) on some main bacteria in water and the influence of ClO2 on the inactivation of some microorganisms studied under various conditions such as the dose of disinfectant and the contact time, pH value, etc. were researched and reported, and it was compared with that of liquid chlorine. The results showed that the killing effect of the ClO2 on bacteria is similar to or better than that of liquid chlorine, the bacteria were effectively killed off by using ClO2 in a relatively wider range of pH value. Moreover, the investigation of the bactericidal mechanism of ClO2 was tentatively undertaken. Then, we concluded that ClO2 is an excellent disinfectant to substitute for the liquid chlorine.