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가축분뇨로부터 질소 회수 연구 현황 및 시사점 분석

Analysis of the current status and implications of nitrogen recovery from livestock manure

  • 임성원 (인하대학교 사회인프라공학과) ;
  • 김상미 (인하대학교 사회인프라공학과) ;
  • 김지민 (인하대학교 사회인프라공학과) ;
  • 김동훈 (인하대학교 사회인프라공학과)
  • Im, Seongwon (Department of Civil Engineering, Inha University) ;
  • Kim, Sangmi (Department of Civil Engineering, Inha University) ;
  • Kim, Jimin (Department of Civil Engineering, Inha University) ;
  • Kim, Dong-Hoon (Department of Civil Engineering, Inha University)
  • 투고 : 2021.02.26
  • 심사 : 2021.03.08
  • 발행 : 2021.03.30

초록

가축분뇨에 함유된 질소와 인은 환경오염 유발 물질이지만 다양한 산업에서 사용되는 필수 자원이기도 하다. 본 연구에서는 가축분뇨에서 질소 회수에 활용되고 있는 스트리핑, 건조 및 탄화, 이온 교환, 전기투석에 대해 소개하였고, 2011년부터 2020년도까지 국내·외에서 수행한 실규모 연구 현황과 해외 실증플랜트 운영 사례를 분석하였으며 상기 조사결과를 바탕으로 공정별 평가를 실시하였다. 또한, 대표적인 기술인 스트리핑의 주요 운전인자인 pH, 온도, 기액비 등의 적정 범위를 제시하였고, 바이오가스화 공정 연계 시 예상되는 물질수지를 제공하였다. 본 연구에서 제시한 정보는 향후 관련 국내 정책 수립 및 실규모 플랜트 운전 시 유용한 자료로 활용이 가능할 것으로 판단된다.

Nitrogen and phosphorus in livestock manure are environmental pollutants, but also could be valuable industrial resources. In the present study, we (1) introduced various nitrogen removal technologies such as stripping, thermal method, membrane, and electrodialysis, (2) reviewed relevant studies reported in 2011-2020, in particular, full-scale experiences, and (3) assessed each technologies based on the above survey results. In addition, we provided the information on the appropriate range of the pH, temperature, gas and liquid ratio, and so on in ammonia stripping process, and expected mass balance when it is connected to biogasification process. We hope the content herein can be helpful for making policy and operating full-scale plant in Korea.

키워드

참고문헌

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