유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제26권2호
  • /
  • Pages.95-103
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  • 2018
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  • 1225-6498(pISSN)
  • /
  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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바이오가스 이용 기술지침 마련을 위한 연구(III) - 기술지침(안) 중심으로

A Study on Establishment of Technical Guideline of the Installation and Operation for the Biogas Utilization of Power generation and Stream - Design and Operation Guideline

  • 문희성 (국립환경과학원 환경자원연구부) ;
  • 배지수 (국립환경과학원 환경자원연구부) ;
  • 박호연 (국립환경과학원 환경자원연구부) ;
  • 전태완 (국립환경과학원 환경자원연구부) ;
  • 이영기 (국립환경과학원 환경자원연구부) ;
  • 이동진 (국립환경과학원 환경자원연구부)
  • Moon, HeeSung (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Bae, Jisu (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Pack, Hoyeun (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Jeon, Taewan (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Lee, Younggi (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Lee, Dongjin (Environmental Resource Research Department, National Institute of Environmental Research)
  • 투고 : 2018.03.09
  • 심사 : 2018.03.14
  • 발행 : 2018.06.30
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초록

바이오가스 이용 최적화를 위해 탈황 및 제습 전처리시설 가이드라인으로 $H_2S$ 농도는 철염으로 처리가능한 150 ppm으로 설정하고, 제습은 발전기 운전 적정수분 값이며 EU회원국에서 바이오가스 활용 시 적용하는 상대습도 60 %로 설정하였다. 국내 바이오가스 평균 온도인 $31^{\circ}C$에서 상대습도 60 %으로 적용한다면 노점온도 $22^{\circ}C$, 절대습도 $20.57g/m^3$으로 나타낼 수 있으며, 전처리 설비가 적절히 가동된다면 가이드라인에 만족하여 바이오가스의 이용이 최적화 될 것으로 사료된다. 바이오가스 이용 최적화를 위해 발전기 설비 가이드라인을 설정하고자 하였다. 바이오가스 적정 이용량으로는 전체 가스 발생량의 90 % 이상을 이용해야하며, 발전기 시설의 용량은 여유율을 10~30 %로 설정해야 한다. 발전기에 유입가스의 압력을 균등화하기 위해서는 가스 균등조(buffer tank)를 설치하며, 발전실 평균온도는 $45^{\circ}C$이하로 유지한다. 소화조에서 일정한 메탄농도로 가스가 생성되지 않아 효율이 저하되므로 메탄농도에 변화에 따른 공기연료비 제어시스템을 설치가 요구된다. 본 연구에서는 유기성폐자원의 바이오가스 생산 및 이용을 최적화를 위해 현장시설의 정밀모니터링과 시설별 에너지수지를 분석하고, 현장문제 해결방안에 대해서 조사하여 전처리시설 및 발전기 등의 설계 및 운전 가이드라인을 제시하고자 한다.

As a guideline for desulfurization and dehumidification pretreatment facility for optimizing utilization of biogas, the $H_2S$ concentration is set at 150 % which can be treated with iron salts, dehumidification is the optimum value for generator operation, and the relative humidity applied at the utilization of biogas in EU is set at 60 %. We have set up the generator facility guidelines to optimize utilization of biogas. The appropriate amount of biogas should be at least 90 % of the total gas generation, and the capacity of generator facility should be set at 20~30 %. In order to equalize the pressure of the incoming gas the generator, a gas equalization tank should be installed and the generator room average temperature should be kept at $45^{\circ}C$ or less. Since the gas is not produced at a certain methane concentration in the digester, the efficiency is lowered. Therefore, it is required to install an air fuel ratio control system according to the change in methane concentration. Therefore, it is necessary to compensate for the disadvantages of biogasification facilities of organic waste resources and optimize utilization of biogas and improve operation of facilities. This study was conducted to optimize biogas utilization of type of organic waste(containing sewage sludge and food waste, animal manure), investigate the facilities problem and propose design, operation guidelines such as pre-treatment facilities and generators.

키워드

참고문헌

  1. Ministry of Environment, A study on the expansion plans of integrated digestion for feces and urine and sewage. (2014).
  2. Ministry of Environment, 2015 The status of waste generation and treatment in Korea. (2016).
  3. Ministry of Environment, 2015 The status of sewage. (2016).
  4. Ministry of Environment, 2016 The status of food waste treatment facilities. (2014).
  5. Ministry of Environment, 2015 The status of livestock manure in korea. (2017).
  6. Ministry of Environment, Research of estimate unit load for livestock. (2008).
  7. Gyeonggi Research Institute, A study on waste management for prohibiting ocean dumping. (2013).
  8. Ministry of Environment, Economic analysis of waste-to-energy project. (2008).
  9. Lee, C. Y., Chung, W. J. and Kim, J. T., "A study on the development trends of wastewater sludge treatment technology", Journal of the Korean Geo-Environmental society, 17(8) pp. 5-15. (2016).
  10. Hong, J. S. and Kim, H. G., "Analysis of R&D investment of waste reduce, recycle and energy recovery technology", Journal of energy engineering, 21(3), pp. 315-324. (2012). https://doi.org/10.5855/ENERGY.2012.21.3.315
  11. Ministry of Environment, Result of evaluation operations management for public sewage treatment facility. (2011).
  12. Ministry of Environment, 2014 Status of organic waste energy utilization facilities. (2014).
  13. National Assembly Budget Office, The problems and improvement project of installation to biogasification facility for organic waste-An economic feasibility. (2012).
  14. Ministry of Environment, Official testing method on wastes. (2012).
  15. Ministry of Food and Drug Safety, Official food testing method General testing method. (2017).
  16. Ministry of Environment, Official testing method on water. (2015).
  17. American Public Health Association, American Water Works Association, Water Environment Federation (USA), Standard methods for the examination of water and wastewater, 22. (1998).
  18. National Institute of Environmental Research, Translation of guidelines for biogas production and use in Germany. (2014).
  19. Tchobanoglous, G., Theisen, H. and Vigil, S., Integrated solid waste management, McGraw-Hill. (1993).
  20. National Institute of Environmental Research, Guidelines for operation management of food waste biogasification facilities. (2014).
  21. Jarrell, K. F., Saulnier, M. and Ley, A., "Inhibition of methanogenesis in pure cultures by ammonia, fatty acids and heavy metals, and protection against heavy metal toxicity by sewage sludge", Journal of Microbiology, 33, pp. 551-555. (1987).
  22. Yen, H. W. and Brune, D. E., "Anaerobic co-digestion of algal sludge and waste paper to produce methane", Journal of Bioresource Technology, 98(1), 130-134. (2007). https://doi.org/10.1016/j.biortech.2005.11.010
  23. Chen, Y., Cheng, J. and Creamer, K. S., "Inhibition of anaerobic digestion process: a review", Journal of Bioresource Technology, 99(10), pp. 4044-4064. (2008). https://doi.org/10.1016/j.biortech.2007.01.057
  24. Khanal, S. K., Anaerobic biotechnology for bioenergy production principles and applications, Wiley-Blackwell. (2008).
  25. Korea Gas Safety Corporation, Research on the establishment plan of proper quality standard of alternative natural gas for the generation of electricity. (2010).