Present Status of Inorganic DBPs Control for Chlorine Dioxide
Chlorite(ClO-2)and chlorate(ClO-3),the inorganic disinfection by-products(DBPs)produced by chlorine dioxide(ClO2)treatment of drinking water,are potentially harmful to human health,which have attracted worldwide attention.At present,the control of ClO2 inorganic DBPs has been extensively studied at home and abroad.This paper summarizes the various sources of ClO2 inorganic DBPs and discusses in detail the research progress on the control of ClO2 inorganic DBPs in drinking water from three aspects:generator optimization,reaction process control,and post generation removal.It is proposed to optimize reactors and impurities in source control,and combine multiple methods during disinfection to control the generation of inorganic DBPs.After disinfection,technologies such as using activated carbon,Fe2+,sulfide,and oxidation are used to remove inorganic DBPs.This paper summarizes the current research issues,and in addition,the problems in current research and the focus of future research have been put forward.
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