Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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The Effect of Air Injection Quantity on Stabilization of Screened Soil in Aerobic Bioreactor Landfill

호기성 Bioreactor 매립지에 있어서 공기주입량이 선별토사의 안정화에 미치는 영향

  • Park, Jin-Kyu (Dept. of Environmental Engineering, Anyang University) ;
  • Lee, Nam-Hoon (Dept. of Environmental Engineering, Anyang University) ;
  • Kim, Nack-Joo (Dept. of Fine Chemistry, Seoul National University of Technology)
  • Received : 2004.02.27
  • Accepted : 2004.03.15
  • Published : 2004.03.30
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Abstract

In this study, we stabilized the screened soil from landfills by using aerobic bioreactor and evaluated aerobic decomposition of it. Four lab-scale bioreactors (anaerobic and 1 PV/day aeration, 5 PV/day aeration, 10 PV/day aeration) filled with screened soil were operated to investigate the effect of air injection quantity on stabilization of screened soil. In case of aerobic bioreactors, the decomposition of organics in screened soil was higher than anaerobic bioreactor. According to the results of landfill gas and soil respiration test, the air injection quantity of 5 PV/day was most efficient in stabilization of screened soil.

본 연구는 공기주입에 의한 고형 폐기물의 빠른 안정화를 달성할 수 있는 매립지의 호기성 공정을 평가하는 것을 목표로 하였다. 실험은 매립지에서 최적의 공기주입방법을 평가하기 위해 선별토사를 충전한 4개의 모의 매립조(혐기성, 1PV(pore volume/day)공기주입, 5PV 공기주입, 10PV 공기주입)를 운영하였다. 선별토사를 충전한 bioreactor를 호기성으로 운전한 경우에 공기를 주입하지 않은 bioreactor에 비해 유기물 분해가 뛰어난 것으로 나타났다. 매립가스의 발생량 및 조성변화와 soil respiration test 결과로부터 5 PV/day으로 공기를 주입한 bioreactor가 유기물 분해율이 가장 높은 것으로 나타났다.

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