지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2006.1
- 수록면
- 146 - 153 (8page)
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초록· 키워드
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It was expected that co-digestion of different organic substrates would be more effective than each substrate digestion because of the reciprocally supplementary properties. In this study, co-digestion with acid-fermented foodwaste (AFF) and septic sludge (SS) were evaluated according to different operating conditions. As the basis operating conditions for anaerobic digestion, the reaction temperature was controlled at 35 and hydraulic retention time (HRT) was set for 30 days. AFF and SS were mixed at the ratio of 0 : 1, 1 : 1, 2 : 1, 3 : 1, 4 : 1, 6 : 1 and 1 : 0 as the influent substrates and the each mixing ratio was expressed as Run 1~Run 7, respectively. The organic loading rate (OLR) was gradually increased from 1.06kg VS/m3•day to 1.65kg VS/m3•day according to the addition of AFF. The VS removal efficiency was increased from 50% to 80%, with increasing of the OLR. However, in the over range of the mixing raio of 3 : 1, the increasing rates of VS removal efficiency were slightly low. In addition, the highest biogas production rate (1.19m3 Gas/kg•VSadded) and specific methane yield (0.69m3 CH4/kg•VSadded) were observed in Run 4 (OLR: 1.34kg VS/m3•day). Therefore, it was considered that the increase of the AFF addition would be effective on the organic removal efficiency, but there are limited to improve anaerobic digestion efficiency. Inhibition effects of NH4+-N and NaCl concentration on the anaerobic digestion were not shown apparently in this experiment. Finally, based on these results, it was concluded that the optimum mixing ratio of the AFF and SS would be in the range of 3 : 1 (OLR: 1.34kg VS/m3•day) during mesophilic anaerobic co-digestion process.
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