engleski

Disinfection byproduct formation according to type of disinfectant used

Results of the Petrinja-Sisak water supply system safety testing for potentially harmful disinfection by-products collected over years are presented. They showed that the formation of trihalomethanes (THMs) was significant only when gaseous chlorine was used in pretreatment and as the final disinfectant. Chlorine dioxide produced little THMs, and chlorite concentration detected was below guideline values. Preozonation generally decreased THMs formation from postchlorination, either chlorine or chlorine dioxide was used as secondary disinfectant.

drinking water; ozone; chlorine; chlorine dioxide; disinfection byproducts

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