유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제25권2호
  • /
  • Pages.91-100
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  • 2017
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  • 1225-6498(pISSN)
  • /
  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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가축분뇨 병합처리 바이오가스화를 위한 설계 및 운전 기술지침 마련 연구(I): 현장조사 결과 중심으로

A Study on Establishment of Technical Guideline of the Installation and Operation for the Efficient Bio-gasification Facility of Fig Manure and Food Waste(I):

  • 이동진 (국립환경과학원 폐자원에너지연구과) ;
  • 문희성 (국립환경과학원 폐자원에너지연구과) ;
  • 손지환 (국립환경과학원 폐자원에너지연구과) ;
  • 배지수 (국립환경과학원 폐자원에너지연구과)
  • Lee, Dongjin (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Moon, HeeSung (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Son, Jihwan (Environmental Resource Research Department, National Institute of Environmental Research) ;
  • Bae, Jisu (Environmental Resource Research Department, National Institute of Environmental Research)
  • 투고 : 2017.06.02
  • 심사 : 2017.06.14
  • 발행 : 2017.06.30
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초록

본 연구는 유기성폐자원 (가축분뇨, 음식물류폐기물, 음식물류폐수 등)을 병합 소화하는 시설을 대상으로 적정 설계 기준치를 충족하기 위한 설계 및 운전 기술지침서 마련하고자 현장조사와 정밀모니터링을 실시하였다. 정부의 중장기 바이오가스화 정책에 따라 폐자원의 자원화 시설 확충이 활발히 추진되고 있다. 하지만 저농도 유기물을 함유하는 가축분뇨의 원료적인 한계점으로 인하여 최근 신규 혐기소화시설 설치 없이 기존시설을 활용하는 병합처리 바이오가스화에 대한 관심이 증가하고 있는 실정이다. 따라서 현재 운영 중인 바이오가스화 13개소를 대상으로 공정별 특징 및 문제점을 분석하고 혐기소화조 현장 시료의 계절별 정밀모니터링을 실시하여 바이오가스화 공정 흐름에 따른 설계 운영 가이드라인을 제시하였다. 현장조사 수행 결과, 반입 공급 공정에서 계절별 유입물의 총고형물 농도 편차, 농가 종류에 따른 유입물 성상의 비균일성 등이 바이오가스 생산 이용 공정에서는 바이오가스의 적정 제습, 황화수소 전처리 등이 주요 문제점으로 조사되었다. 특히 가축분뇨 단독 및 병합처리 바이오가스화 시설은 최종 혐기소화 유출액이 액비화 공정을 거치므로 수요처로의 공급 및 액비저장조의 적정규모 산정이 선제되어야 한다.

The purpose of this study is to provide a design and operation technical guideline for meeting the appropriate design criteria to bio-gasification facilities treating organic wastes. In accordance with the government's mid-to long-term policies on bio-gasification and energization of organic wastes, the expansion of the waste-to-energy (WTE) facilities is being remarkably promoted. However, because of the limitation of livestock manure containing low-concentration of volatile solids, there has been increased in combined bio-gasification without installing new anaerobic digestion facilities. The characteristics and common problems of each treatment processes were investigated for on-going 13 bio-gasification facilities. The seasonal precision monitoring of chemicophysics analysis on anaerobic digestor samples was conducted to provide guidelines for design and operation according to the progress of bio-gasification treatment. Consequently, major problems were investigated such as large deviation of organic materials depending on seasons, proper dehumidification of biogas and pretreatment of hydrogen sulfide.

키워드

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