정진영 정윤철 강신현 정형숙 2024-01-21T04:45:09Z 2024-01-21T04:45:09Z 2021-09-06 2005-06 2289-0971 https://pubs.kist.re.kr/handle/201004/136410 The purpose of this study is to investigate the performances of organic removal and methane recovery by using a full scale two-phase anaerobic system. The full scale two-phase anaerobic process was consists of an acidogenic anaerobic baffled reactor (ABR) and a methanognic upflow anaerobic sludge blanket (UASB) reactor. The volumes of acidogenic and methanogenic reactors were designed to 28.3 m3 and 75.3 m3. The two-phase anaerobic system represented 60-82% of COD removal efficiency when the influent COD concentration was in the range of 7,150 to 16,270 mg/L after screening (average concentration is 10,280 mg/L). After steady-state, the effluent COD concentration in the methanogenic reactor showed 2,740 ± 330 mg/L by representing average COD removal efficiency was 71.4 ± 8.1% when the operating temperature was in the range of 19-32°C. The effluent SCOD concentration was in the range of 2,000-3,000 mg/L at the steady state while the volatile fatty acid concentration was not detected in the effluent. Meanwhile, the COD removal efficiency in the acidogenic reactor showed less than 5%. The acidogenic reactor played key roles to reduce a shock-loading when periodic shock loading was applied and to acidify influent organics.Due to the high concentration of alkalinity and high pH in the effluent of the methanogenic reactor, over 80% of methane in the biogas was produced consistently. More than 70% of methane was recovered from theoretical methane production of TCOD removed in this research. The produced gas can be directly used as a heat source to increase the reactor temperature. 한국물환경학회 양돈폐수처리시 실규모 이단 혐기성공정의 성능 및 메탄회수 Methane Recovery and Performances of Full-scale Two-stage Anaerobic Process Treating Piggery Wastewater Article 2 한국물환경학회지, v.21, no.3, pp.256 - 262 한국물환경학회지 21 3 256 262 kci ART001132054 Two-stage anaerobic system Piggery wastewater Methane recovery COD removal Methane content