Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Mixing Ratio and Organic Loading Rate of Acid Fermented Food Wastes and Sewage Sludge on the Anaerobic Digestion Process

음식물찌꺼기 산발효산물과 하수슬러지의 혼합비 및 유기물부하가 병합처리에 미치는 영향

  • 안철우 (국립공원관리공단 오대산사무소) ;
  • 박진식 (경운대학교 보건환경) ;
  • 장성호 (부산대학교 지역환경시스템공학)
  • Published : 2006.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study has been conducted for the process of food wastes disposal using surplus capacity of established sewage treatment plant by co-digestion of fermented food wastes and sewage sludge after thermophilic acid fermentation of food wastes. The co-digestion of thermophilic acid fermented food wastes and sewage sludge was performed by semi-continous method in mesophilic anaerobic digestion reactor. It showed great digestion efficiency as the average SCOD and VS removal efficiency in organic loading rate 3.30g VS/L.d. were 74.2% and 73.6%, and the gas production rate and average methane content were 0.440 L/g $VS_{add}.d$ and 66.5%, respectively. Based on the results of this study, the co-digestion of thermophilic acid fermented food wastes and sewage sludge in sewage treatment plant is able to improve treatment efficiency of anaerobic digestion reactor and to dispose food wastes simultaneously, and was proved excellent economical efficiency comparing with any other treatment methods.

본 연구에서는 실험실 규모의 혐기성 소화 실험을 통하여 고온산발효를 거친 음식물찌꺼기 산발효액과 하수슬러지의 적정 혼합비와 유기물 부하율에 따른 반응조 운전특성을 분석하여 실제 플랜트에 적용가능성을 검토하여 얻은 결론은 다음과 같다. 음식물지꺼기 고온 산발효액과 하수슬러지를 혼합하여 반연속식으로 혐기성 소화실험을 실시한 결과 유기물 부하율 3.3 gVS/L.d(혼합비 1:1)에서 최적인 것으로 평가되었는데, 이때 SCOD 제거효율은 평균 74.2%, VS 제거효율은 73.6%, 주입된 VS당 생성된 가스량은 $0.440{\ell}/g\;Vs_{add}.d$였으며 평균 메탄 함량은 66.5%로 나타났다. 이는 기존에 음식물찌꺼기를 하수처리장의 중온 소화조에서 처리할 때의 유기물 부하보다 높아 효율성, 경제성에서 유리한 것으로 판단되었다.

Keywords

References

  1. Shin, H. S., Han, S. K., Song, Y. C., and Lee, C. Y. (2001) Food Waste Treatment Using MUSTAC Process. J. KSWES 18(1), 43-50
  2. Kim, D. H. and Kim, I. S. (1998) Study on the Determination of Kinetic Coefficients and Tendency of VFA Degradation under Thermophilic Anaerobic Digestion. J. KSWES 15(3), 184-190
  3. McMahon, K. D., Stroot, P. G., Mackie, R. I., and Raskin, L. (2001), Anaerobic codigestion of muncipal solid waste and biosolid under various mixing condition-II, Microbial population dynamic. Wat. Res. 35(7) 1817-1827 https://doi.org/10.1016/S0043-1354(00)00438-3
  4. Mata-Alvarez, J., Mace, S., and Llabres, P. (2000) Anaerobic digestion of organic solid waste. An overview of research achievements and perspectives. Bioresource Technology, 74, 3-16 https://doi.org/10.1016/S0960-8524(00)00023-7
  5. Callaghan, F. J., Wase, D. A. J., Thayanithy, K., and Forster, C. F. (1999) Co-digestion of waste organic solid : batch studies. Bioresource Technology, 67, 117-122 https://doi.org/10.1016/S0960-8524(98)00108-4
  6. Misi, S. N., and Forster, C. F. (2001) Batch codigestion of multi-component agro-wastes. Bioresource Technology, 80, 19-28 https://doi.org/10.1016/S0960-8524(01)00078-5
  7. Callaghan, F. J., Wase, D. A. J., Thayanithy, K., and Forster, C. F. (2002) Continuous co-digestion of cattle slurry with fruit and vegetable wastes and chicken manure. Biomass and Bioenergy, 27, 71-77
  8. Lafitre-Trouque, S. and Forster, C. F. (2000) Dual anaerobic co-digestion of sewage sludge and confectionary waste. Bioresource Technology, 71, 77-82 https://doi.org/10.1016/S0960-8524(99)00043-7
  9. Cho, J. K (1995) A study on the two-phase anaerobic digestion of food wastes. Kaist
  10. Byun, I. G. (2000) a study on co-digestion of food wastes and sewage sludge by two stage anaerobic digester. Pusan University
  11. ATV (1970) Lehr-und Handbuch der ABWASSER TECHNIK Band III Zwelte Auflage. 155-156
  12. McCarty, P. L (1964) Anaerobic Waste Treatment Fundamentals, Public Works. 91-126
  13. Clark, R. H. and Speece, R, E. (1970) The pH tolerance of anaerobic digestion. 5th International Water Pollution Research Conf. II, 27, 1-14
  14. De Baere, L. A., Devocht M., Van Assche, P., and Verstraete, W. (1984) Influence of High NaCl and NH4Cl Salt Levels on Methanogenic Associations. Water Res., 18(5), 543-548 https://doi.org/10.1016/0043-1354(84)90201-X
  15. Karapanogiotis, N. K., Rudd, T., Sterritt, R. M., and Lester, J. N. (1989) Extraction and haracterization of Extracellular Polymers in Digested Sludge. J. Chem. Tech. Biotchnol, 44, 107-120
  16. Ghosh (1983) Novel two-phase anaerobic gasification with solid bed acid digestion in tandem with fixed-film methane fermentation. Proc. U. Ins., Chicago
  17. Anonymous (1987) Anaerobic Sludge Digestion. Manual of Practice No.16, 2nd Edition, Water Pollution Control Federation
  18. Chiu-Yue, Kazuaki, Tatsuya Noike, and Junichiro Matsumoto (1985) Methanogenic Digestion of Acetic, Propionic, Butyric Acids. Water Res
  19. 環境技術硏究會都, 都市ごみ 處理 ガイドフツク, 理工新社, 181 (1987)
  20. 서울시정개발연구원 (2001) 서울시 자치구의 남은음식물 처리기반 확보방안
  21. 경기개발연구원 (1998) 음식물 재활용 방안에 관한 연구
  22. 김광임, 최상기 (1997) 음식물쓰레기 처리방법별 기술 및 비용편익분석 연구. 환경정책평가연구원
  23. 효성에바라 환경엔지니어링 주식회사 (1998) 하수처리장을 이용한 음식물쓰레기의 병합처리. 폐기물 자원화 학회지, 8(2), 21-27
  24. Park, N. b. (1999) Food waste and sewage sludge mixture treatment using anaerobic digestion. Pukyung University