Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics of Sludge Bulking Caused by Low Dissolved Oxygen in Aeration Tank for Paper Mill Wastewater Treatment

포기조의 낮은 용존산소로 인한 제지폐수의 슬러지 팽화특성

  • Kwak, Dong-Heui (Division of Environmental and Chemical Engineering, Seonam University) ;
  • Yoo, Seung-Joon (Division of Environmental and Chemical Engineering, Seonam University) ;
  • Park, Jong-Chun (Department of Micro-biology, Seonam University)
  • 곽동희 (서남대학교 환경화학공학부) ;
  • 유승준 (서남대학교 환경화학공학부) ;
  • 박종천 (서남대학교 의과대학 미생물학과)
  • Received : 2008.03.11
  • Accepted : 2008.07.03
  • Published : 2008.07.30
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Abstract

Bulking phenomena and scum formation are common problem in suspended growth system like the activated sludge plants for wastewater treatment. Apart from wastewater composition, operating conditions, such as mechanical stress by insufficient oxygen supply, are often decisive for the occurrence of a bulking or scumming problem. There were the comparative aeration tanks in terms of sludge bulking caused by the difference of mechanical aeration facilities in the wastewater treatment plant of N paper mill company. In this study the cause of bulking was investigated through not only the biological isolation and identification but also a series of operational data consideration. On the basis of the investigation results for bulking cause, the operational criteria on dissolved oxygen concentration was derived to decrease the bulking problem.

Keywords

Acknowledgement

Supported by : 전북지역환경기술개발센터

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