한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제23권6호
  • /
  • Pages.927-933
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  • 2007
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

열처리한 하수슬러지 메탄발효의 동력학적 해석

Kinetic Evaluation of Methane Fermentation of Thermally Disintegrated Wastewater Sludge

  • 박기영 (건국대학교 사회환경시스템공학과) ;
  • 이재우 (고려대학교 환경시스템공학과) ;
  • 정태학 (서울대학교 건설환경공학부)
  • Park, Ki Young (Department of Civil and Environmental System Engineering, Konkuk University) ;
  • Lee, Jae Woo (Department of Environmental Engineering, Korea University) ;
  • Chung, Tai Hak (Department of Civil, Urban and Geosystem Engineering, Seoul National University)
  • 투고 : 2007.10.22
  • 심사 : 2007.11.08
  • 발행 : 2007.11.30
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초록

Waste activated sludge (WAS) was thermally pretreated to enhance hydrolysis and ultimately methane yield. Batch and semi-continuous anaerobic digestion were conducted to evaluate the performance of methane fermentation of the hydrolyzed sludge and to investigate the kinetics of sludge fermentation. Thermal pretreatment remarkably enhanced digestion performances particularly the methane fermentation with three times more methane production than before the pretreatment. Gas production and kinetic parameters in the semi-continuous anaerobic digestion were estimated using Chen Hashimoto model. The model simulation fitted well the experimental results and the model was shown to be suitable for evaluating the effects of disintegration of WAS in anaerobic digestion. Three parameters ($B_o$, K, and ${\mu}_m$) determined by model simulation were $0.0807L-CH_4/g-VS$, 0.453 and $0.154d^{-1}$ for control sludge, and $0.253L-CH_4/g-VS$, 0.835 and $0.218d^{-1}$ for thermally pretreated sludge, respectively.

키워드

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