Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Formation and Characteristics of Aerobic Granular Sludge Using Polymer in Sequencing Batch Reactor

연속회분식 장치에서 응집제를 이용한 호기성 입상슬러지 생성 및 특성

  • Lee, Bong-Seob (Department of Environmental Engineering, Dong-A University) ;
  • Choi, Seong-Woo (Department of Environmental Engineering, Dong-A University)
  • Received : 2009.08.26
  • Accepted : 2009.12.02
  • Published : 2009.12.31
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Abstract

This study was carried out to investigate of aerobic granulation by using sequencing batch reactor(SBR). To make aerobic granular sludge in short period of time, we used polymer. In case of SBR, we have studied on physicochemical characteristics of particle size, settling velocity, surface charge, and specific oxygen utilization rate(SOUR) depending on aerobic particle's formation. The results of running SBR with $5.4kg{\cdot}COD/m^3{\cdot}d$ of COD loading rate and 20 days reaction time showed that aerobic particle size, settling velocity, SOUR, surface charge, polysaccharide/protein(PS/PN) ratio were 2.6 mm, 1.7 cm/s, $346mg{\cdot}O_2/g{\cdot}MLVSS{\cdot}hr,\;(-)0.26{\cdot}meq/g{\cdot}MLVSS$, and 2.06 mg/mg respectively.

본 연구는 고분자 응집제를 이용하여 단시간에 입상형태의 슬러지를 제조한 후 연속회분식 장치에 주입하여 호기성 입상화를 시도하였다. 연속회분식 반응조에서 호기성 입자의 형성에 따른 입자의 크기, 침강속도, 표면전하, 비산소 소비율 등의 물리 화학적인 특성을 조사하였다. 입상형태의 슬러지를 연속회분식 장치에 주입하여 COD 부하량 $5.4kg{\cdot}COD/m^3{\cdot}d$로 운전한 결과 운전경과 20일만에 2.6 mm 내외의 호기성 입자를 형성하였으며, 최종형성된 호기성 입자의 침강속도, 비산소 소비율, 표면전하, 다당류/단백질비는 각각 1.7 cm/s, $346mg{\cdot}O_2/g{\cdot}MLVSS{\cdot}hr,\;(-)0.26{\cdot}meq/g{\cdot}MLVSS$, 2.06 mg/mg을 나타내었다.

Keywords

References

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