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J Korean Soc Environ Eng > Volume 38(6); 2016 > Article
J Korean Soc Environ Eng 2016;38(6): 279-290. doi: https://doi.org/10.4491/KSEE.2016.38.6.279
상향류식 혐기성 슬러지 블랭킷 반응조에 비교한 생물전기화학 반응조의 산성 주정폐수처리성능
풍경1, 송영채1,†, 유규선2, 반와리 랄3, 난다쿠마르 쿱파난3, 산죽타 수부디3
1한국해양대학교 환경공학과
2전주대학교 토목환경공학과
3인도 에너지자원연구소
Performance of Upflow Anaerobic Bioelectrochemical Reactor Compared to the Sludge Blanket Reactor for Acidic Distillery Wastewater Treatment
Qing Feng1, Young-Chae Song1,†, Kyuseon Yoo2, Banwari Lal3, Nanthakumar Kuppanan3, Sanjukta Subudhi3
1Department of Environmental Engineering, Korea Maritime and Ocean University, Korea
2Department of Civil & Environmental Engineering, Jeonju University, Korea
3Environmental and Industrial Division, The Energy and Resources Institute, India
Corresponding author  Young-Chae Song ,Tel: 051-410-4417, Fax: 051-410-4415, Email: soyc@kmou.ac.kr
Received: March 18, 2016;  Revised: April 8, 2016;  Accepted: April 11, 2016.  Published online: June 30, 2016.
ABSTRACT
The performance of upflow anaerobic bioelectrochemical reactor (UABE), equipped with electrodes (anode and cathode) inside the upflow anaerobic reactor, was compared to that of upflow anaerobic sludge blanket (UASB) reactor for the treatment of acidic distillery wastewater. The UASB was stable in pH, alkalinity and VFAs until the organic loading rate (OLR) of 4.0 g COD/L.d, but it became unstable over 4.0 g COD/L.d. As a response to the abrupt doubling in OLR, the perturbation in the state variables for the UABE was smaller, compared to the UASB, and quickly recovered. The UABE stability was better than the UASB at higher OLR of 4.0-8.0 g COD/L.d, and the UABE showed better performance in specific methane production rate (2,076 mL CH4/L.d), methane content in biogas (66.8%), and COD removal efficiency (82.3%) at 8.0 g COD/L.d than the UASB. The maximum methane yield in UABE was about 407 mL/g CODr at 4.0 g COD/L.d, which was considerably higher than about 282 mL/g CODr in UASB. The rate limiting step for the bioelectrochemical reaction in UABE was the oxidation of organic matter on the anode surface, and the electrode reactions were considerably affected by the pH at 8.0 g COD/L.d of high OLR. The maximum energy efficiency of UABE was 99.5%, at 4.0 g COD/L.d of OLR. The UABE can be an advanced high rate anaerobic process for the treatment of acidic distillery wastewater.
Key Words: Acid, Distillery Wastewater, Anaerobic, Bioelectrochemical, Upflow Anaerobic Bioelectrochemical Reactor (UASB)
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