Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Acid Fermentation Characteristics of Waste Activated Sludge using Acids and Ultrasonication

산용해 및 초음파를 이용한 하수 슬러지의 산발효 특성

  • Sohn, C.H. (Daewoo Institute of Construction Technology) ;
  • Hong, S.M. (Daewoo Institute of Construction Technology) ;
  • Lee, B.H. (Pukyong National University)
  • Received : 2007.08.27
  • Accepted : 2007.09.28
  • Published : 2007.09.30
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Abstract

The Carbon source to enhance the denitrification is essential matter in the advanced sewage treatment. For the high level of nutrient removal, external carbons such as ethanol, methanol, volatile fatty acids and so on should be needed. In this study, the methods to increase the sludge solubilization and acidification rate were compared with waste activated sludges and food waste leachate. Ultrasonication and acids were used for the pretreatment of organic particles in sludges. As a results, the optimal temperature and HRT were $60^{\circ}C$ and 5 days, respectively. HAc, HPr, HBr, and other VFAs for acid fermentations reduced up to 22, 16, 14, and 48% with HRT reduction. For the increase of solubilization, 28% of solids destruction rate was shown at 0.3 watts/mL.

Keywords

References

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