Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Morphological Characteristics of Granular Sludge in dPAO SBR

dPAO SBR 입상슬러지의 형태학적 특성

  • Yoo, Tae Uk (Department of Environmental Engineering, Korea University) ;
  • Lee, Hansaem (Department of Environmental Engineering, Korea University) ;
  • Yun, Geumhee (Department of Environmental Engineering, Korea University) ;
  • Yun, Zuwhan (Department of Environmental Engineering, Korea University)
  • 유태욱 (고려대학교 대학원 환경공학과) ;
  • 이한샘 (고려대학교 대학원 환경공학과) ;
  • 윤금희 (고려대학교 대학원 환경공학과) ;
  • 윤주환 (고려대학교 대학원 환경공학과)
  • Published : 2013.07.30
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Abstract

The morphological characteristics of granules, which were generated in lab-scale sequencing batch reactor (SBR) for simultaneous nitrogen and phosphorus removal with denitrifying phosphorus accumulating organism (dPAO) were identified. Granular sludge was fully developed in the anaerobic-anoxic (An-Ax) SBR after 180 days of SBR operation. The average diameter of granular sludge was 2.2 mm and rod-type organisms dominated in the granules. In addition, about 1.0 mm of white precipitate was observed in the core of the granule, and the material was confirmed that it is very similar to hydroxyapatite $(HAP;\;Ca_5(PO_4)_3(OH))$ by X-ray diffraction) analysis.

Keywords

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