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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received October 27, 2006
Accepted January 20, 2007

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Evaluation of a pilot scale dual media biological activated carbon process for drinking water

Young-Song Ko Yoon-Jin Lee^1† Sang-ho Nam²

R&D Department, Kyung Sung Engineering Co., LTD., Dangha-dong, Seo-gu, Incheon 404-310, Korea ¹Department of Environmental Engineering, Cheongju University, 36, Naedok-dong, Sangdang-gu, Cheongju, Chungbuk 360-764, Korea ²Department of Environmental Engineering, Konkuk University, 1, Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea

Korean Journal of Chemical Engineering, March 2007, 24(2), 253-260(8), 10.1007/s11814-007-5038-8

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Abstract

This study was carried out to optimize a dual media BAC (biological activated carbon) process for DOC removal and DBPs (disinfection by-products) control. Pilot scale tests were coducted at the Tukdo water treatment plant in Seoul, Korea. The dual media BAC process is highly efficient in the removal of DOC and THMFP, and is more capable of sustaining microorganisms than a single layer filter. The bottom layer of the sand filter functioned as a screen for turbidity, microorganisms, and other biological material. Total DOC removal efficiency was 13 to 25%, and the corresponding THMFP (trihalomethane formation potential) removal efficiency was approximately 20 to 33%. Turbidity and DOC leakage continued for 40 min after backwashing in all reactors. Breakthrough occurred from 24-72 hours in each reactor. Ten species of microorganisms were identified in the activated carbon filled in BAC reactors. The predominant species were Clavibactor and Corynebacterium and microbial species were simple at the lower end.

Keywords

BAC Dual Media DOC THMFP Biomass

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