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J Korean Soc Environ Eng > Volume 37(7); 2015 > Article
J Korean Soc Environ Eng 2015;37(7): 404-411. doi: https://doi.org/10.4491/KSEE.2015.37.7.404
정수처리용 생물활성탄 공정에서 Halonitromethanes (HNMs)의 생물분해 동력학 평가: EBCT 및 수온의 영향
손희종1, 강소원2, 염훈식1, 류동춘1, 조만기3
1부산광역시 상수도사업본부 수질연구소
2프리드리히-알렉산더대학교 생명화학공학과
3동서대학교 글로벌 생명공학과
Evaluation of Biodegradation Kinetic in Biological Activated Carbon (BAC) Process for Drinking Waste Treatment : Effects of EBCT and Water Temperature
Hee-Jong Son1, So-Won Kang2, Hoon-Sik Yoom1, Dong-Choon Ryu1, Man-Gi Cho3
1Water Quality Institute, Water authority, Busan
2Department of Bio-chemical Engineering, Friedrich-Alexander University
3Department of Global Biotechnology, Dong-Seo University
Corresponding author  Hee-Jong Son ,Tel: 051-669-4788, Fax: 051-669-4669, Email: menuturk@hanmail.net
Received: June 18, 2015;  Revised: July 23, 2015;  Accepted: July 29, 2015.  Published online: July 31, 2015.
ABSTRACT
In this study, the effects of empty bed contact time (EBCT) and water temperature on the biodegradation of 9 halonitromethanes (HNMs) in biological activated carbon (BAC) process were investigated. Experiments were conducted at three water temperatures (10℃, 15℃ and 25℃) and three EBCTs (5, 10 and 15 min). Increasing EBCT and water temperature increased the biodegradation efficiency of HNMs in BAC column. Dibromochloronitromethane (DBCNM) and tribromonitromethane (TBNM) showed the highest biodegradation efficiency, but chloronitromethane (CNM) and dichloronitromethane (DCNM) were the lowest. The kinetic analysis suggested a pseudo-first-order reaction model for biodegradation of 7 HNMs at various water temperatures and EBCTs. The pseudo-first-order biodegradation rate constants (kbio) of 7 HNMs ranged from 0.0797~0.7657 min-1 at 10℃ to 0.1245~1.8421 min-1 at 25℃. By increasing the water temperature from 10℃ to 25℃, the biodegradation rate constants (kbio) were increased 1.6~2.4 times.
Key Words: Halonitromethanes (HNMs), Biological Activated Carbon (BAC) Process, Biodegradation, Water Temperature, Empty Bed Contact Time (EBCT)
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