Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Development of Influent Controlled Membrane Bioreactor for Biological Nutrient Removal on Municipal Wastewater

하수 고도처리를 위한 유로변경형 MBR공정의 개발

  • Park, Jong-Bu (Research Institute of Technology, Hanwha E&C Corp.) ;
  • Shin, Kyung-Sook (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) ;
  • 신경숙 ((주)한화건설 기술연구소) ;
  • 허형우 ((주)한화건설 기술연구소) ;
  • 강호 (충남대학교 환경공학과)
  • Received : 2011.02.17
  • Accepted : 2011.07.26
  • Published : 2011.07.29
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Abstract

This study was performed to investigate the characteristics of nutrient removal of municipal wastewater in membrane bioreactor system. Membrane bioreactor consists of four reactors such as two intermittently anaerobic tanks, the oxic tank and the sludge solubilizaion tank with an internal recycle. The hydraulic retention time (HRT) and flux were 6.5 hours and $20.4L/m^2{\cdot}hr$ (LMH), respectively. The removal efficiency of $COD_{Cr}$, SS, TN and TP were 94.0%, 99.3%, 99.9%, 69.9%, and 66.9%, respectively. The estimated true biomass yield, specific denitrification rate (SDNR), specific nitrification rate (SNR), specific phosphorus release rate (SPRR) and specific phosphorus uptake rate (SPUR) were 0.34 kgVSS/kgBOD d, $0.067mgNO_3-N/mgVSS{\cdot}d$, $0.028mgNH_4-N/mgVSS{\cdot}d$, 16.0 mgP/gVSS d and 2.1 mgP/gVSS d, respectively. The contents of nitrogen and phosphorus of biomass were 8.9% and 3.5% on an average.

본 연구는 2개의 간헐혐기조, 막분리호기조 및 슬러지 가용화로 구성된 유로변경형 membrane bioreactor의 운영을 통하여 도시 하수의 영양염류 제거 특성을 규명하였다. 수리학적 체류시간(HRT)과 운영 여과 플럭스의 평균값은 각각 6.5 시간과 $20.4L/m^2{\cdot}hr$ (LMH)이었으며, 공정을 운전한 결과, $COD_{Cr}$, SS, TN 및 TP의 평균 제거율은 각각 94.0%, 99.3%, 99.9%, 69.9%와 66.9%이었다. 슬러지 생산계수, SDNR, SNR, SPPR 및 SPUR은 각각 0.34 kg VSS/kg BOD d, $0.067mg\;NO_3-N/mg\;VSS{\cdot}d$, $0.028mg\;NH_4-N/mg\;VSS{\cdot}d$, 16.0 mg P/g VSS d 및 2.1 mg P/g VSS d였다. 또한, 생산된 슬러지의 평균 질소 및 인 함량은 각각 8.9%와 3.5%였다.

Keywords

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