대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제37권12호
  • /
  • Pages.696-704
  • /
  • 2015
  • /
  • 1225-5025(pISSN)
  • /
  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지
DOI QR코드

DOI QR Code

젖소분뇨로부터 최대 바이오가스 생산과 유기물 제거효율을 달성하기 위한 반건식 간헐주입 연속혼합 혐기성반응조의 최적 수리학적 체류시간 도출을 위한 연구

Assessment of Optimum Hydraulic Retention Time (HRT) for Maximum Biogas Production and Total Volatile Solid (TVS) Removal Efficiency of Semi-Continuously Fed and Mixed Reactor (SCFMR) Fed with Dairy Cow Manure

  • Kang, Ho (Department of Environmental Engineering, Chungnam National University) ;
  • Kim, Sun-Woo (Department of Environmental Engineering, Chungnam National University) ;
  • Jeong, Ji-Hyun (Department of Environmental Engineering, Chungnam National University) ;
  • Ahn, Hee-Kwon (Department of Animal Biosystems Science, Chungnam National University) ;
  • Jung, Kwang-Hwa (National Institute of Animal Science, R. D. A.)
  • 투고 : 2015.12.08
  • 심사 : 2015.12.29
  • 발행 : 2015.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문은 톱밥 깔개 젖소분뇨 TS 13%를 반건식 간헐주입 연속혼합 반응조(Semi-Continuously Fed and Mixed Reactor, SCFMR)에 주입하여 신재생에너지인 바이오가스의 생산성과 TVS 제거효율을 비교 평가하여 최적 운전조건을 도출하고자 하였으며, 그 연구결과를 요약하면 다음과 같다. 톱밥 깔개 젖소분뇨 주입 TS 13%의 반건식 SCFMR의 운전결과 HRT 25일(OLR $4.40{\sim}4.50kg\;VS/m^3-day$)에서 최대 바이오가스 발생량 1.44 v/v-d와 $CH_4$ 발생량 1.12 v/v-d를 달성하였으며, 이 때 TVS 제거효율은 바이오가스 발생량 기준 37%이었다. 이는 톱밥 깔개 젖소분뇨 1일 100 kg 주입 시 $3.60m^3$의 바이오가스를 생산하는 결과이다. 높은 유기물 부하율인 OLR $4.45kg\;VS/m^3-day$(HRT 25일)에서 SCFMR의 운전이 안정적인 이유는 주입시료인 톱밥 깔개 젖소분뇨가 갖고 있는 높은 Alkalinity 농도 때문이다. 그 결과 반응조의 Alkalinity는 14,500~15,600 mg/L as $CaCO_3$ 범위이었으며, 반응조의 안정성을 평가하는 V/A 비는 평균 0.11, P/A 비는 평균 0.43을 유지하였다.

This study was carried out to evaluate the optimum operational condition of Semi-continuously Fed and Mixed Reactor (SCFMR) to treat the dairy cow manure and saw dust mixture. Step-wise increase in organic loading rates (OLRs) or decrease in hydraulic retention times (HRTs) were utilized until the biogas volume became significantly decreased at mesophilic temperature ($35^{\circ}C$). The optimum operating condition of the SCFMR fed with TS 13% dairy cow manure and saw dust mixture was found to be an HRTs of 25 days and its corresponding OLRs of $4.45kg\;VS/m^3-day$. At this condition the biogas and methane production rates were 1.44 v/v-d and 1.12 v/v-d (volume of biogas per volume of reactor per day), respectively and the TVS removal efficiency of 37% was achieved. The successful operation with such a high OLR was due to the high reactor alkalinity concentration of 14,500~15,600 mg/L as $CaCO_3$ as a result of the characteristic of the original substrate, dairy cow manure and saw dust mixture whose alkalinity was more than 8,000 mg/L as $CaCO_3$. The parameters for the reactor stability, the ratios of volatile acids and alkalinity concentrations (V/A) and the ratio of propionic acid and acetic acid concentrations (P/A) appeared to be 0.11 and 0.43, respectively, that were greatly stable in operation. Free ammonia toxicity was not experienced due to the long term acclimation by the reactor TS content ranged 7.2~10.4% during the entire operational period.

키워드

참고문헌

  1. International Energy Agency (IEA), "Task 37 Country Reports Summary," IEA Bioenergy(2014).
  2. Korea Statistical Information Service (KOSIS), "Livestock Survey Report," KOSIS, Korea(2014).
  3. Wilkie, A. C., "Anaerobic Digestion of dairy manure: design and process considerations," Dairy Manure Management Conference (NRAES-176), March 13-15 (2005).
  4. APHA, AWWA and WEF, "Standard methods for the examination of water and wastewaterTM, 22nd ed.," Eugene, W. R., Rodger, B. B., Andrew, D. E. and Lenore, S. C. (Eds.), Clearway Logistics, Hanover, pp. 4-1496(2012).
  5. Angelidaki, I. and Sanders, W., "Assessment of the anerobic biodegradability of macropollutants," Reviews in Environ. Sci. and Bio/Technol., 3, 117-129(2004). https://doi.org/10.1007/s11157-004-2502-3
  6. Kang, H. and Weiland, P., "Ultimate anaerobic biodegradability of some agro-industrial residues," Bioresour. Technol., 43, 107-111(1993). https://doi.org/10.1016/0960-8524(93)90168-B
  7. Kang, H. and Shin, K. S., "Effect of electron beam irradiation on anaerobic batch degradation rate of sewage sludge," J. Korean Solid Waste Eng. Soc., 17(2), 217-224(2000).
  8. Kang, H., Shin, K. S. and Richards, B., "Determination of ultimate biodegradability and multiple decay rate coefficients in anaerobic batch degradation of organic wastes," J. Korean Soc. Environ. Eng., 27(5), 555-601(2005).
  9. Kim. S. W., Kang, H. and Jeong, J. H., "Ultimate biodegradability and multiple decay rate coefficients of organic wastes," J. Korean Soc. Environ. Eng., 37(7), 387-395(2015). https://doi.org/10.4491/KSEE.2015.37.7.387
  10. Speece, R. E., "Anaerobic biotechnology for industrial wastewaters," Environ. Sci. Technol., 17(9), 416A-427A(1983). https://doi.org/10.1021/es00115a725
  11. Bae, J. H., Yoo, M. S., Ryu, D. S. and Kim, C. K., "Waste to energy," Donghwa Technol. Pub. Corp., Korea(2010).
  12. Lee, Y. N., Lee S. B. and Lee. J. D., "Characteristics of lignin removal in cellulosic ethanol production process," J. Appl. Chem. Eng., 22(1), 77-80(2011).
  13. Siddique, Md. N. I., Munaim, M. S. A. and Zularisam, A. W., "Mesophilic and thermalphilic biomethane production by co-digestion pretreated petrochemical wastewater with beef and dairy cattle manure," J. Ind. and Eng. Chem., 20, 331-337(2014). https://doi.org/10.1016/j.jiec.2013.03.030
  14. Lukehurst, C. T., Frost, P. and Al Seadi, T., "Utilisation of digestate from biogas plants as biofertiliser," IEA Bioenergy Task 37(2010).
  15. Lee, H. J., Lee, W. S., Kim, H. S., Cho, W. M., Yang, S. H., Ki, K. S., Kim, S. B. and Park, J. K., "Effects of the growth and production phase on manure production and compositions in holstein dairy cattle," J. Lives. Hous. and Environ., 17(1), pp. 11-22(2011).
  16. Montgomery, L. F. R. and Bochmann, G., "Pretreatment of feedstock for enhanced biogas production," IEA Bioenergy (2014).
  17. Banks, C. and Heaven, S., "Optimization of biogas yields from anaerobic digestion by feedstock types," The biogas handbook: Science and production and applications, 1st ed., Wellinger, A., Murphy, J. and Baxter, D.(Eds.), Woodhead Publishing, Sawston, pp. 131-165(2013).
  18. Rico, C., Rico, L. J., Tejero, I., Munoz, N. and Gomez, B., "Anaerobic digestion of the liquid fraction of dairy manure in pilot plant for biogas production: Residual methane yield of digestate," Waste Manage., 31, 2167-2173(2011). https://doi.org/10.1016/j.wasman.2011.04.018
  19. Murphy, J. D. and Thamsiriroj, T., "Fundamental science and engineering of the anaerobic digestion process for biogas production," The biogas handbook: Science and production and applications, 1st ed., Wellinger, A., Murphy, J. and Baxter, D.(Eds.), Woodhead Publishing, Sawston, pp. 104-130(2013).
  20. McCarty, P. L., "Anaerobic waste treatment fundamentals Part 3: Toxic materials and their control," Public Works, 91-94(1964).
  21. Yamashiro, T., Lateef, S. A., Ying, C., Beneragama, N., Masahiro, I., Nishida, T. and Umetsu, K., "Anaerobic codigestion of dairy cow manure and high concentrated food processing waste," J. Mater. Cycle Waste Manage., 15, 539-547(2013). https://doi.org/10.1007/s10163-012-0110-9
  22. Weiland, P., "Personal communication and plant visit," Unpublished data(2012).