Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Semi-pilot Scaled Hybrid Process Treatment of Malodorous Waste Air: Performance of Hybrid System Composed of Biofilter Packed with Media Inoculated with Thiobacillus sp. IW and Return-sludge and Photocatalytic Reactor

악취폐가스의 세미파일럿 규모 하이브리드 공정 처리: Thiobacillus sp. IW 및 반송슬러지를 접종한 담체를 충전한 바이오필터와 광촉매반응기로 구성된 하이브리드시스템의 운전

  • Lee, Eun Ju (Department of Chemical Engineering, Daegu University, Research Institute for Industrial and Environmental Waste Air Treatment) ;
  • Lim, Kwang-Hee (Department of Chemical Engineering, Daegu University, Research Institute for Industrial and Environmental Waste Air Treatment)
  • 이은주 (대구대학교 화학공학과, 산업 및 환경폐가스연구소) ;
  • 임광희 (대구대학교 화학공학과, 산업 및 환경폐가스연구소)
  • Received : 2014.01.17
  • Accepted : 2014.02.20
  • Published : 2014.04.01
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Abstract

A semi-pilot hybrid system composed of a photocatalytic reactor and a biofilter was operated under various operating conditions in order to treat malodorous waste air containing both hydrogen sulfide and ammonia which are major air pollutants emitted from composting factories and many publicly owned treatment works (POTW). When both hydrogen sulfide and ammonia contained in malodorous waste air were treated simultaneously by a biofilter system, its performance of ammonia removal was much more poor than that by a biofilter system treating waste air containing only ammonia, unlike its performance of hydrogen sulfide removal. For semi-pilot hybrid system, the removal efficiencies of hydrogen sulfide and ammonia turned out to be ca. 83 and 65%, respectively. Therefore, for semi-pilot hybrid system, the removal efficiencies of hydrogen sulfide and ammonia was increased by ca. 4 and 30%, respectively, compared to those of semi-pilot biofilter system (control). In addition, the maximum elimination capacities of hydrogen sulfide and ammonia for semi-pilot hybrid system turned out to be ca. 60 and $37g/m^3/h$, respectively. These maximum elimination capacities of hydrogen sulfide and ammonia were estimated to be ca. 9.1% and ca. 23.3% greater than those for semi-pilot biofilter system (control), respectively. Therefore, the semi-pilot hybrid system contributed the enhancement of removal efficiency and the maximum elimination capacity of ammonia in a higher degree than that of hydrogen sulfide, compared to the semi-pilot biofilter system.

퇴비공장 또는 공공시설에서 발생되는 악취폐가스의 대표적인 제거대상 오염원인 황화수소와 암모니아를 포함한 악취폐가스를 처리하기 위하여 여러 운전 조건 하에서 바이오필터와 광촉매반응기로 구성된 semi-pilot 하이브리드시스템을 운전하였다. 황화수소 및 암모니아를 동시 처리하는 바이오필터시스템에서는 황화수소의 처리성능과 다르게 암모니아의 처리성능은 암모니아만을 처리하는 바이오필터시스템보다 훨씬 떨어졌다. Semi-pilot 하이브리드시스템의 황화수소와 암모니아에 대한 제거효율은 각각 약 83% 및 약 65% 정도이었다. 따라서 semi-pilot 바이오필터시스템의 경우보다 황화수소 및 암모니아에 대한 제거효율은 각각 4 및 30% 정도 증가하였다. 또한 황화수소와 암모니아의 동시제거를 할 때에 황화수소와 암모니아의 최대 제거용량은 각각 약 60 및 $37g/m^3/h$이었다. 따라서 semi-pilot 바이오필터시스템의 경우보다 황화수소 및 암모니아에 대한 최대 제거용량은 각각 약 9.1%와 약 23.3% 증가하였다. 그러므로 본 semi-pilot 하이브리드시스템은 semi-pilot 바이오필터시스템을 기준으로 황화수소보다 암모니아의 제거율과 최대 제거용량 제고에 더욱 기여하였다.

Keywords

References

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