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논문(論文) : 입상활성탄의 표면특성과 TOC제거와의 상관성 연구
백영애 ( Young Ae Baek ),조우현 ( Woo Hyun Joe ),홍병의 ( Byung Eui Hong ),김광호 ( Kwang Ho Kim ),최영준 ( Young June Choi ) 대한상하수도학회 2008 상하수도학회지 Vol.22 No.3
During the full-scale water treatment operation at "G" Water Treatment Plant in Seoul, we investigated changes in pore volume distribution and specific surface area of GAC with time. The pore volume of the used GAC decreased to the level below 0.6 cc/g while that of the brand new GAC was ranged 0.7~0.9 cc/g. The specific surface area of GAC pores changed within the range between 1100~1200 m2/g and 700~800 m2/g. Bacteria attached to the surface of GAC shows a gradual increase (0.4x106~8.5x106 CFU/g) under scanninig electron microscope (SEM). TOC removal was enhanced due to growth of the attached bacteria on GAC. It was found that TOC removal was closely related with physical parameters (pore volume, specific surface area) linearly under the investigated conditions. The used GAC need to be exchanged into new one or re-generated to remove organic matters (TOC) effectively from the finished drinking water.