Effect of Food Waste Direct Landfilling Prohibition on Characteristics of Landfill Gas and Leachate

음식물류폐기물 직매립금지가 매립지 가스 및 침출수 특성에 미치는 영향

  • Ko, Jae-Young (Graduate School of Energy and Environment, Seoul National University of Technology) ;
  • Phae, Chae-Gun (Graduate School of Energy and Environment, Seoul National University of Technology) ;
  • Park, Joon-Seok (Department of Environmental Disaster Prevention Engineering, Kangwon National University)
  • 고재영 (서울산업대학교 에너지환경대학원) ;
  • 배재근 (서울산업대학교 에너지환경대학원) ;
  • 박준석 (강원대학교 환경방재공학과)
  • Received : 2007.08.29
  • Accepted : 2007.09.19
  • Published : 2007.12.10

Abstract

This research was performed to evaluate the effect of 'Food Wastes (FW) Direct Landfilling Prohibition' on characteristics of landfill gas (LFG) and leachate and the appropriateness of current legislation. Approximately 45% (Exp.45) and 15% (Exp.15) of FW were filled in two lysimeters. During 570 days, 1400 L of LFG was generated from Exp.45%, which was much more than 906 L of Exp.15. There was no significant difference of LFG composition between Exp.15 and Exp.45. 2~30 ppmv of odorous hydrogen sulfide was detected in Exp.45, while 2~7 ppmv was in Exp.15. There was also no significant difference in the leachate generation between the two. On day 570, $BOD_5$ of Exp.45 and Exp.15 were 37000 mg/Land 25630 mg/L and $COD_{Cr}$ of Exp.45 and Exp.15 were 45480 mg/L, 30294 mg/L. TOC of Exp.45 was 2~3 times higher than Exp.15. Higher portion of FW in landfilling increased LFG generation. However, it generated more odor and made the quality of leachate. Therefore, 'FW direct Landfilling Prohibition' was evaluated as an appropriate legislation.

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