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KMID : 1171820040190020001
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Journal of Environmental and Sanitary Engineering
2004 Volume.19 No. 2 p.1 ~ p.6
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Degradation of THM precursor using TiO₂ photocatalytic oxidation on the water treatment processes
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Cho Deok-Hee
Seo Su-Man
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Abstract
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In Bok-Jeong water treatment plant, chlorination is the only technique used for disinfection of drinking water. This disinfecting treatment leads to the formation of trihalomethanes (THMs). This study was carried out to investigate the possibility of improving removal efficiency of THM precursor in the conventional water treatment processes by TiO₂ photocatalytic oxidation. Removal efficiencies of DOC, UV_(254), THMFP were low in the conventional water treatment processes. With application of TiO₂ photocatalyst, DOC, UV_(254), THMFP were reduced more effectively. As the TiO₂ photocatalytic reaction time increased, the removal efficiencies of DOC, UV_(254), THMFP were increased. The TiO₂ photocatalytic removal efficiencies of DOC, UV_(254), THMFP were increased with increasing TiO₂ dosage. However, over 0.6g/ℓ of TiO₂ dosage, the efficiency reached a plateau.
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KEYWORD
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TiO₂ photocatalytic, THM precursor, DOC, THMFP, oxidation
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