UASB 공정에 의한 슬러리형 돈사폐수의 처리

The Treatment of Slurry-type Swine Waste using UASB Reactor

  • 원철희 (강원대학교 공과대학 환경공학과) ;
  • 김병욱 (강원대학교 공과대학 환경공학과) ;
  • 한동준 (강원도립대학 환경시스템과) ;
  • 임재명 (강원대학교 공과대학 환경공학과)
  • Won, Chul-Hee (Department of Environmental Engineering, Kangwon National University) ;
  • Kim, Byoung-Ug (Department of Environmental Engineering, Kangwon National University) ;
  • Han, Dong-Joon (Department of Environmental System, Gangwon Provincial University) ;
  • Rim, Jay-Myoung (Department of Environmental Engineering, Kangwon National University)
  • 투고 : 2004.07.22
  • 심사 : 2004.09.17
  • 발행 : 2004.11.30

초록

This research examined the treatment efficiency and methane production rate in treating slurry-type swine waste using UASB (upflow anaerobic sludge blanket) reactor. The UASB reactor was operated at an organics volumetric loading rate (VLR) of $2.6-15.7kgCOD/m^3/day$. A stepwise increase of the VLR resulted in a temporary deterioration in the COD removal rate in UASB reactor but recovered quickly. The COD removal rate were 65-70% for VLR up to $5 kgCOD/m^3/day$. When organics VLR was $10kgCOD/m^3/day$, the COD removal rate decreased sharply and there was loss of 17.537g of the seeding biomass due to sludge washout. This result indicated that the UASB system cannot be adapted to more than $10kgCOD/m^3/day$ of VLR. As the organic load increased from 2.6 to $15.7kgCOD/m^3/d$, the biogas production rate varied from 3.2 to 10.8 L/d and the methane conversion rate of the organic matter varied from 0.30 to $0.23m^3CH_4/kg\;COD_{removed}$. The methane content showed the range of 70.1-81.5% during the experimental period. The volatile solids (VS) removal efficiency was similar at the low VLR (< $5 kgCOD/m^3/day$), but it decreased sharply at the high VLR (> $5 kgCOD/m^3/day$). The VS reduction rate was, moreover, large those of COD. The result shows that hydraulic retention time above 2 days is essential in case of treating wastewater containing 1% of solids.

키워드

참고문헌

  1. 강호, 최영, 김철규, 진창숙, Hybrid UASB 공정에 의한 양돈폐수의 혐기성 전처리가 질소 . 인 후속고도처리에 미치는 영향평가, 한국폐기물학회지, 16(4), pp. 412-422 (1999)
  2. 김병욱, 임재명, 돈사폐기불의 혐기성 소화시 수리학적 체류시간이 소화효율에 미치는 영향, 대한환경공학회지, 23(2), pp. 233-242 (2001)
  3. 주홍신, 김병겸, 윤성일, 고성철, 이성택, 돈분 폐수 처리를 위한 입상 슬러지의 특성 연구, 대한환경공학회지, 23(8), pp. 1371-1378 (2001)
  4. 최일엽 , UASB 공정에 의한 가축폐수의 혐기성전처리, 충남 대학교 석사학위논문 (1998)
  5. Boopathy, R., Biological Treatment of Swine Waste Using Anaerobic Baffled Reactors, Biore. Tech., 64, pp. 1-6 (1998)
  6. Chen, T. H. and Shyu, W. H., Performance of four types fo anaerobic reactors in treating veη dilute dairy wastewater, Biom. and Bioen., 11(5), pp. 431-440 (1996)
  7. Fang, H. H. P., Chui, H. K., Li, Y. Y. and Chen, T., Effect of degradation kinetics on the microstructure of anaerobic biogranules, Wat. Sci. Tech., 32(8), pp. 165-172 (1995)
  8. Jewell, W. J., Richards, B. K., Cummings, R. J. and White, T. E., Methods for kinetic analysis of methane fermentation in high solids biomass digesters , Biom. and Bioen., 1(2), pp. 65-73 (1991)
  9. Jewell , W. J., Switzenbaum, M. S., and Morris, J. W., Municipal wastewater treatment with the anaerobic attached microbial film expanded bed process, J WPCF, 53(4), pp. 482-490 (1981)
  10. Kalyuzhnyi, S., Fedorovich, V. and Nozhevnikova, A., Anaerobic treatment of liquid fraction of hen manure in UASB reactors, Biore. Tech., 65, pp. 221-225 (1998)
  11. Lettinga, G. and Hulshoff P. L. W., UASB-Process Design for various types of wastewaters, Wat. Sci. Tech., 24(8), pp. 87-107 (1991)
  12. Lettinga, G., Hobma, S. W., Hulshoff, P. L. W., de Zeeuw, W., de Jorg, P., Grin, P. and Roersma, R., Design operation and economy of anaerobic treatment, Wat. Sci. Tech., 15, pp. 177-195 (1983)
  13. Lettinga, G., Man, A. D., ver der Last, A. R. M., Wiegant, W., Frijins, J. and van Buuren J. C. L., Anaerobic treatment of domestic sewage and wastewater, Wat. sci. Tech., 27(9), pp. 67-73 (1993)
  14. Lo, K. V., Liao, P. H. and Gao, Y. C., Anaerobic treatment of swine wastewater using hybrid UASB reactors, Biore, Tech., 47, pp. 153-157 (1994)
  15. McCarty, P. L. and McKinney, R. E., Volatile acid toxicity in anaerobic digestion, J WPCF, 33, pp. 223 (1961)
  16. Parkin. G. F. and Owen. W. E., Fundamentals of anaerobic digestion of wastewater sludges, J Environ. Engin., 112(5), pp. 867-920 (1986)
  17. Standard methods for the examination of water and wastewater, 19th edition , American public health association/American water works association/Water environmental federation, Washington DC., U.S.A (1995)
  18. Young, l. C., The Anaerobic Filter for Waste Treatment, Ph. D. dissertation, Stanford Univ., Palo Alto, California, (1968)
  19. Zeeman, G., Mahmoud, N., Gijzen, H. and Lettinga, G., Solids removal in upflow anaerobic reactors, a review, Biore. Tech., 90, pp. 1-3 (2003)