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Evaluation of Ozone Application for Drinking Water Treatment Process Using DAF  

Kang, Tae-Hee (Department of Environmental Engineering, Yonsei University)
Oh, Byung-Soo (Department of Environmental Engineering, Yonsei University)
Cheong, Youn-Cheong (Department of Environmental Engineering, Yonsei University)
Kwon, Soon-Buhm (International Institute for Water and Wastewater, Korea Water Resources Corporation)
Sohn, Byeong-Yong (Hoengseong Regional Office, Korea Water Resources Corporation)
Kang, Joon-Wun (Department of Environmental Engineering, Yonsei University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.27, no.6, 2005 , pp. 567-572 More about this Journal
Abstract
In this study, a lab-scale test was performed to apply the ozone process in drinking water treatment plant using dissolved ai, flotation(DAF). The kinetic study on the ozone decay and hydroxyl(OH) radical formation was investigated by several parameters, such as I.D(Instantaneous ozone demand), $k_c$(ozone decomposition rate), ozone-Ct and OH radical-Ct. Ozonation of several target waters, such as raw water, DAF treated water and filtrate, was conducted to select the optimum position and dosage of ozone process. The highest value of Ozone-Ct and OH radical-Ct was observed at DAF treated water at initial run time($0{\sim}30\;min$). From the results of ozonation, the intermediate ozonation was proposed as the optimum position and the effective dose of ozone was determined to be $1{\sim}2\;mg/L$.
Keywords
Ozone; DAF; Drinking Water; Ozone-Ct; OH Radical-Ct;
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