Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Biogas Treatment from Wastewater Treatment Plant by Micro-bubble Generation System with Neutralization Chemicals

중화약품과 마이크로버블 장치를 이용한 폐수처리장 바이오가스 처리

  • Jung, Jae-Ouk (Department of Radiological Science, Catholic University of Pusan) ;
  • Jung, Yong-Jun (Department of Environmental Engineering, Catholic University of Pusan)
  • 정재억 (부산가톨릭대학교 방사선학과) ;
  • 정용준 (부산가톨릭대학교 환경공학과)
  • Received : 2021.01.28
  • Accepted : 2021.02.09
  • Published : 2021.02.28
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Abstract

DIWS system was introduced to remove hydrogen sulfide from the biogas of wastewater treatment plant. In the case of using water into the DIWS system more than 5,000mg/L of hydrogen sulfide, 25% of H2S removal efficiency was shown and required such further treatment process as incineration which was obtained more than 98%. When the inflow of hydrogen sulfide was 5,000mg/L, CH4 and CO2 were effectively discharged and the reduction was 8.7% and 28.6%, respectively. When such neutralization chemicals as Na2CO3 and NaOH were introduced into the DIWS system, H2S was removed more than 97.2% keeping pH in the range of 11.2 to 11.5.

폐수처리장에서 발생하는 바이오가스 중의 황화수소를 처리하기 위하여 습식스크러빙 장치가 적용되었다. 유입 H2S의 농도가 5,000mg/L이상에서 DIWS 장치에 물만을 사용할 경우 25%의 제거율을 나타내어 후속으로 소각처리 공정이 도입되어야만 98% 이상의 제거율을 나타냈다. 유입 H2S의 농도가 5,000mg/L일 때 CH4과 CO2는 각각 8.7%와 28.6% 감소하여 배출되었다. DIWS 장치에 중화약품으로 Na2CO3와 NaOH를 사용하였을 때 pH가 11.2~11.5를 유지하면서 H2S는 97.2% 제거되었다.

Keywords

References

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