한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제21권5호
  • /
  • Pages.464-469
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  • 2005
  • /
  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

부직포 여과막 생물반응조의 혐기성 폐수처리에 관한 기초연구

A Basic Study on the Anaerobic Wastewater Treatment using Nonwoven Fabric Filter Bioreactor

  • 김택수 (인하대학교 환경토목공학부) ;
  • 배민수 (인하대학교 환경토목공학부) ;
  • 조윤경 (위스콘신대학교 토목환경공학과) ;
  • 조광명 (인하대학교 환경토목공학부)
  • Kim, Taek-Su (School of Environmental & Civil Engineering, Inha University) ;
  • Bae, Min-Su (School of Environmental & Civil Engineering, Inha University) ;
  • Cho, Yun-Kyung (Department of Civil and Environmental Engineering, University of Wisconsin-Madison) ;
  • Cho, Kwang-Myeung (School of Environmental & Civil Engineering, Inha University)
  • 투고 : 2005.03.03
  • 심사 : 2005.06.08
  • 발행 : 2005.09.30
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초록

In the nonwoven fabric filter bioreactor (NFBR), both the construction and the operation costs could be saved because a high concentration of microorganism can be maintained in the reactor as in the membrane bioreactor. However, the NFBR process has been investigated only under aerobic and/or anoxic conditions, In this research, a basic anaerobic treatment experiment was performed at $35^{\circ}C$ by feeding an airtight NFBR with a concentrated synthetic organic wastewater. The organic loading rate (OLR) of the NFBR was increased stepwise from $0.25kg\;COD/m^3-day$ to $0.77kg\;COD/m^3-day$ by gradually decreasing the hydraulic retention time from 20 days to 13 days. The results of the research showed that the best COD removal efficiency achieved at the OLR of $0.67kg\;COD/m^3-day$ with a value of 99.3%. The methane content of the produced gas was highest with a value of 61.2% at the OLR of $0.33g\;COD/m^3-day$. The highest methane production rate was $0.89g\;COD/m^3-day$ at the same OLR. The operation was terminated at the OLR of $0.77kg\;COD/m^3-day$ because of the deterioration in COD removal efficiency, gas production rate, and the methane content of the gas. Further researches are recommended for the NFBR to be employed for anaerobic treatment of organic wastewaters.

키워드

참고문헌

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