Disinfection effect of chlorine dioxide on viruses, algae and animal planktons in water

In this paper, the disinfection effects of chlorine dioxide (ClO2) on some main viruses, algae and animal planktons in water and the influence of ClO2 on the inactivation of some microorganisms studied under various conditions such as the dose of disinfectant, contact time, and pH value, etc. were researched and reported. The effects and influence were compared with liquid chlorine, and results showed that the killing effect of ClO2 on algae is about the same as or better than that of liquid chlorine and the inactivation effect of ClO2 on viruses and animal planktons is more remarkable than that of liquid chlorine. The viruses were effectively killed off by ClO2 in a wider pH range. Moreover, the mechanism of viruses killed by ClO2 was tentatively investigated. Then, it is concluded that ClO2 is an excellent disinfectant as a substitute for liquid chlorine.