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Removal of residual ozone in drinking water treatment using hydrogen peroxide and sodium thiosulfate
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 Title & Authors
Removal of residual ozone in drinking water treatment using hydrogen peroxide and sodium thiosulfate
Kwon, Minhwan; Kim, Seohee; Ahn, Yongtae; Jung, Youmi; Joe, Woo-Hyun; Lee, Kyunghyuk; Kang, Joon-Wun;
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The aim of this study was to evaluate the chemical quenching system for residual ozone and to determine the operating condition for the quenching system. Hydrogen peroxide () and sodium thiosulfate () were investigated as quenching reagents for ozone removal, and the tendency of each chemical was notably different. In the case of , the degradation rate of ozone was increased as the concentration of increase, and temperature and pH value have a significant effect on the degradation rate of ozone. On the other hand, the degradation rate of ozone was not affected by the concentration of , temperature and pH value, due to the high reactivity between the and ozone. This study evaluates the decomposition mechanism of ozone by and with consideration for the water quality and reaction time. Furthermore, the removal test for the quenching reagents, which can be remained after reaction with ozone, was conducted by GAC process.
Hydrogen peroxide;Ozone process;Quenching;Residual ozone;Sodium thiosulfate;
 Cited by
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