Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Elimination capacities of toluene and ammonia in the bio-filter system depending on type of media

담체 종류에 따른 바이오필터의 톨루엔과 암모니아 분해능 평가

  • 김선진 (경희대학교 공과대학 환경공학과.환경연구센터) ;
  • 김태형 (경희대학교 공과대학 환경공학과.환경연구센터) ;
  • 황선진 (경희대학교 공과대학 환경공학과.환경연구센터)
  • Received : 2012.11.06
  • Accepted : 2012.12.07
  • Published : 2012.12.15
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Abstract

Contribution of immobilized media with bacteria to the odor removal was evaluated in a lab scale bio-filter compared to that with sponge or ceramic media without the immobilized bacteria. Candida tropicalis for volatile organic compounds and ammonium oxidizing bacteria (AOB) for inorganic compounds were used as seeds in lab-scale bio-reactors. Three different type of media in the bio-reactors that immobilized bioreactor (IBR), sponge bioreactor (SBR), and ceramic bioreactor (CBR) were examined, respectively. An empty bed contact time (EBCT) of the bio-filters was fixed as 60 seconds, and the inlet concentration of toluene was changed from 20 ppm to 200 ppm to observe the removal efficiency depending on the concentrations. As a result, the maximum elimination capacities of IBR, SBR, and CBR were 166 $g/m^3/hr$, 138 $g/m^3/hr$, and 138 $g/m^3/hr$, respectively. In addition, toluene as an organic compound and ammonia as an inorganic compound were applied together with different inlet concentrations varied from 80 ppm to 250 ppm of toluene and from 2.5 ppm to 40 ppm of ammonia. The toluene maximum elimination capacities in IBR, SBR, and CBR were 97.4 $g/m^3/hr$, 59.5 $g/m^3/hr$, and 81.9 $g/m^3/hr$, respectively. The ammonia maximum elimination capacities were reached as 7.2 $g/m^3/hr$ in IBR, 6.6 $g/m^3/hr$ in SBR, and 7.0 $g/m^3/hr$ in CBR.

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