입상활성탄의 총유기탄소 흡착능 및 일반세균의 발생에 관한 연구

• 영문명: A Study on the TOC Adsorption and Heterotrophic Bacterial Growth in Granular Activated Carbons
• 발행기관: 한국환경보건학회
• 저자명: 김영진(Young Jin Kim) 김영규(Young Gyu Kim) 정문호(Moon Ho Chung)
• 간행물 정보: 『1. 한국환경보건학회지』제25권 제4호, 15~19쪽, 전체 5쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1999.12.30

영문 초록

Granular activated carbon(GAC) is used primarily for removing odors, tastes, organic constituents and residual disinfectants in water supplies. GAC is made mainly from raw materials such as coconut shell and bituminous coal in the reverse osmosis home drinking water treatment systems. The objective of this study is to compare and contrast bituminous GAC with coconut GAC in terms of their abilities to remove organic substances, residual chlorine and heterotrophic bacterial growth. Tap water passed through filtration system using micro-filter and carbon column and performances were compared during 16 days. The Effluent concentration ratio of TOC for bituminous GAC was lower than that of coconut GAC. Also, the TOC breakthrough of bituminous GAC was longer than that of coconut GAC. The total residual chlorine adsorption of bituminous GAC was 75.0∼90.6%, coconut GAC 75.0∼90.0% respectively. The carbon type did not appear to make a significant difference of this property. Heterotrophic bacterial growth of bituminous GAC was faster than that of coconut GAC in early stage. The bacterial population of bituminous GAC and coconut GAC peaked to 3.4 ×10 exp(5) cfu/㎖ and 4.2 ×10 exp(5) cfu/㎖, respectively after 5 days. The number of bacteria in coconut GAC has been kept up with 10^4∼10^5 cfu/㎖, bituminous GAC 10^3∼10^4 cfu/㎖ respectively since then. For the pre-treatment of reverse osmosis home drinking water treatment system, bituminous GAC is more suitable than coconut GAC because of the high adsorption capacity of TOC and low development of heterotrophic bacteria of bituminous GAC.

목차

I. 서론

II. 실험재료 및 방법

III. 결과 및 고찰

IV. 결론

키워드

Total organic carbon Total residual chlorine Microfilter, Heterotrophic bacteria Granular Activated carbon