Removal of natural organic matter (NOM) and taste and odor problems in drinking water are a sensitive issue in municipal water treatment plants. This study investigated the effectiveness of ozone (O3) + granular activated carbon (GAC), O3 + hydroperoxide (H2O2) + GAC, and GAC processes using a pilot scale plant to remove NOM and geosmin (50–1,000 ng/L), and 2-methylisoborneol (2-MIB: 50–300 ng/L). In the O3 + GAC process, NOM-related parameters showed an average of 52% dissolved organic carbon (DOC) removal from 2 mg/L DOC influent, 99.3% haloacetic acids (HAAs) removal from 0.097 mg/L HAAs influent, and 100% removal from 0.05 mg/L bromide influent. Taste and odor removal rates were 94–100% for geosmin and 87–100% for 2-MIB. The O3 + H2O2 + GAC process removed an average of 55% DOC, 99.7% HAAs, 100% bromate, 94–100% geosmin, and 93–100% 2-MIB. The GAC process removed 46% DOC, 98.3% HAAs, 100% bromate, 83–100% geosmin, and 81–100% 2-MIB. Based on a comparison of the efficiencies and an economic analysis, the O3 + H2O2 + GAC process was determined to be the optimal system for removing NOM and taste and odor compounds.
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Research Article|
July 10 2015
Comparison of O3 + GAC, O3 + H2O2 + GAC, and GAC unit operation on natural organic matter and taste and odor causing compounds removal using a pilot plant study Available to Purchase
Hanbai Park;
Hanbai Park
1Water and Environment Department, Korea Interfacial Science and Engineering Institute, 400-18 Nambu-daero, Dongnam-gu, Cheonan 330-270, Korea
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Tae-Yul Kim;
Tae-Yul Kim
1Water and Environment Department, Korea Interfacial Science and Engineering Institute, 400-18 Nambu-daero, Dongnam-gu, Cheonan 330-270, Korea
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Dalsik Woo;
Dalsik Woo
1Water and Environment Department, Korea Interfacial Science and Engineering Institute, 400-18 Nambu-daero, Dongnam-gu, Cheonan 330-270, Korea
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Yong-Sik Cho
2Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
E-mail: [email protected]
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Water Supply (2015) 15 (6): 1383–1395.
Article history
Received:
May 20 2015
Accepted:
June 26 2015
Citation
Hanbai Park, Tae-Yul Kim, Dalsik Woo, Yong-Sik Cho; Comparison of O3 + GAC, O3 + H2O2 + GAC, and GAC unit operation on natural organic matter and taste and odor causing compounds removal using a pilot plant study. Water Supply 1 December 2015; 15 (6): 1383–1395. doi: https://doi.org/10.2166/ws.2015.102
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