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

Abstract In this paper, the disinfection effects of chlorine dioxide (ClO 2 ) on some main viruses, algae and animal planktons in water and the influence of ClO 2 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 ClO 2 on algae is about the same as or better than that of liquid chlorine and the inactivation effect of ClO 2 on viruses and animal planktons is more remarkable than that of liquid chlorine. The viruses were effectively killed off by ClO 2 in a wider pH range. Moreover, the mechanism of viruses killed by ClO 2 was tentatively investigated. Then, it is concluded that ClO 2 is an excellent disinfectant as a substitute for liquid chlorine.