Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Development of Submerged Membrane Bioreactor for Biological Nutrient Removal on Municipal Wastewater and Analyzing the Effect of Chemical Cleaning on Microbial Activity

도시 하수에서의 생물학적 고도처리를 위한 MBR공정 개발 및 화학세정에 의한 미생물 활성도 영향 분석

  • Park, Jong-Bu (Research Institute of Technology, Hanwha E&C Corp.) ;
  • Park, Seung-Kook (Research Institute of Technology, Hanwha E&C Corp.) ;
  • Hur, Hyung-Woo (Research Institute of Technology, Hanwha E&C Corp.) ;
  • Kang, Ho (Department of Environmental Engineering, Chungnam University)
  • 박종부 ((주)한화건설 기술연구소) ;
  • 박승국 ((주)한화건설 기술연구소) ;
  • 허형우 ((주)한화건설 기술연구소) ;
  • 강호 (충남대학교 환경공학과)
  • Received : 2008.09.19
  • Accepted : 2008.12.19
  • Published : 2009.01.30
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Abstract

This study was performed to investigate the application of submerged membrane bioreactor (MBR) system for biological nutrient removal of municipal wastewater. MBR bioreactor consists of four reactors such as anaerobic, stabilization, anoxic and submerged membrane aerobic reactors with two internal recycles. The hydraulic retention time (HRT), sludge retention time (SRT) and flux were 6.2 hr, 34.1 days and $19.6L/m^2/hr$ (LMH), respectively. As a result of operation, the removal efficiency of $COD_{Cr}$, SS, TN and TP were 94.3%, 99.9%, 69.4%, and 74.6%, respectively. There was no significant effect of microbial activity after the maintenance cleaning using 200 mg/L of NaOCl. Membrane filtration for the treatment of municipal wastewater was performed for longer than 9 months without chemical recovery cleaning.

Keywords

References

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