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하수슬러지의 혐기성 혼합소화에 대한 동력학적 특성 및 상승효과 평가 KCI 등재

Assessment of Dynamic Kinetics and Synergistic Effect for Anaerobic Co-digestion of Sewage Sludge

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한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)
한국폐기물자원순환학회 (Korea Society Of Waste Management)
초록

In this study, anaerobic co-digestion experiments for mixtures consisting of sewage sludge with food wastewater and livestock wastewater were conducted to assess the methane yields, the volatile solids (VS) removal rates and the dynamic kinetics. An augmented simplex centroid design (ASCD) was employed to design the mixing rate of organic wastes for the anaerobic co-digestion. Also, synergistic effects on the anaerobic co-digestion were studied using models obtained by the ASCD. As a result, synergistic effects were not observed in terms of methane yield and VS removal rate. It was just showed that there was a linear relationship between the cumulative methane yield and the mixing rate of food wastewater. The results might be attributable that the sewage sludge and the livestock wastewater had very lower C/N ratio compared with food wastewater that had a C/N ratio within a range required for a correctly operating anaerobic co-digestion. Therefore, increasing mixing rates of food wastewater increased the methane yield and VS removal rate, but there was not a synergistic effect by the anaerobic co-digestion.

저자
  • 박진규((주)에코윌플러스) | Jin-Kyu Park
  • 김인희(안양대학교 환경공학과) | In-Hee Kim
  • 안영미(한국환경공단 환경에너지처) | Young-Mi Ahn
  • 樋囗壯太郎(후쿠오카대학대학원 공학연구과) | Sotaro Higuchi
  • 이남훈(안양대학교 환경공학과) | Nam-Hoon Lee Corresponding author