상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제29권1호
  • /
  • Pages.57-63
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  • 2015
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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수열탄화를 이용한 하수 슬러지의 고형연료화 및 에너지 회수 효율

Hydrothermal carbonization of sewage sludge for solid recovered fuel and energy recovery

  • 김대기 (건국대학교 사회환경시스템공학과) ;
  • 이관용 (건국대학교 사회환경시스템공학과) ;
  • 박기영 (건국대학교 사회환경시스템공학과)
  • Kim, Daegi (Department of Civil and Environmental System Engineering, Konkuk University) ;
  • Lee, Kwanyong (Department of Civil and Environmental System Engineering, Konkuk University) ;
  • Park, Kiyoung (Department of Civil and Environmental System Engineering, Konkuk University)
  • 투고 : 2014.12.01
  • 심사 : 2015.02.02
  • 발행 : 2015.02.15
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초록

Recently, Korea's municipal wastewater treatment plants generated amount of wastewater sludge per day. However, ocean dumping of sewage sludge has been prohibited since 2012 by the London dumping convention and protocol and thus removal or treatment of wastewater sludge from field sites is an important issue on the ground site. The hydrothermal carbonization is one of attractive thermo-chemical method to upgrade sewage sludge to produce solid fuel with benefit method from the use of no chemical catalytic. Hydrothermal carbonization improved that the upgrading fuel properties and increased materials and energy recovery, which is conducted at temperatures ranging from 200 to $350^{\circ}C$ with a reaction time of 30 min. Hydrothermal carbonization increased the heating value though the increase of the carbon and fixed carbon content of solid fuel due to dehydration and decarboxylation reaction. Therefore, after the hydrothermal carbonization, the H/C and O/C ratios decreased because of the chemical conversion. Energy retention efficiency suggest that the optimum temperature of hydrothermal carbonization to produce more energy-rich solid fuel is approximately $200^{\circ}C$.

키워드

참고문헌

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피인용 문헌

  1. Hydrothermal Carbonization of Spent Coffee Grounds vol.11, pp.14, 2015, https://doi.org/10.3390/app11146542