Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Effect of Moisture Content on Direct Landfilling Prohibition of Organic Sludge

유기성오니 직매립금지에 대한 수분함량의 영향 검토

  • 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)
  • Published : 2007.10.30

Abstract

This research was conducted to evaluate the effect of moisture content on direct landfilling prohibition of organic sludge. Organic sludges with moisture content (Me) of 75 and 85% were filled in two lysimeters. The lysimeters were named as Exp.75 and Exp.85, respectively. LFG of 2,064 l was generated greatly for Exp.85, compared to 1,500 l for Exp.75. LFG generations in Exp.75 and Exp.85 were 64.1 l/kg and 157.1 l/kg as dry TS basis, and 113.6 l/kg and 266.2 l/kg as dry VS basis. Total $CH_4$ generation in LFG for Exp.85 was 1,238 l, while 1,050 l for Exp.75. $H_2S$ of $3{\sim}150$ ppmv was generated from Exp.85, which was 5 times higher than $2{\sim}30$ppmv from Exp.75. Leachate was not generated from Exp.75 during operation time. However, 420 ml of leachate was generated from Exp.85. From the results of gas generation, composition, odorous compounds, and leachate generation, landfilling of organic sludge with high MC was more harmful to the environment in spite of great LFG generation. However, direct landfilling of organic sludges without great difference of MC made a severe odor problem. Therefore, it was thought that current direct landfilling prohibition law for all organic sludge was appropriate.

Keywords

lysimeter;direct landfilling prohibition;organic sludge;moisture content

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