Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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Ultrasonically Enhanced Dewaterability of Fine Particles

초미립자 탈수성 증대를 위한 초음파 활용에 관한 연구

  • Oh, Chul (Dept. of Civil Engineering, Myongji University) ;
  • Kim, Byoung-Il (Dept. of Civil Engineering, Myongji University) ;
  • Kim, Young-Uk (Dept. of Civil Engineering, Myongji University)
  • 오철 (명지대학교 토목공학과) ;
  • 김병일 (명지대학교 토목공학과) ;
  • 김영욱 (명지대학교 토목공학과)
  • Published : 2002.03.01
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Abstract

In accordance with the need of developing a methodology for the sludge reduction, this study investigates the effect of sonication on the dewaterability of the sewage sludge. The investigation involves laboratory experiments of the sewage sludge from Yongin Waste Treatment Plant. The Laboratory tests were conducted under a broad range of conditions including energy levels of ultrasonic waves, time for the treatment, pH, and effect of polymers. The results of the study show that sonication enhances the dewaterability significantly The degree of enhancement varies with sonication power, treatment time, the amount of sludge treated. The effect of sonication on the temperature and pH of the test specimens seems not to be significant. The polymer can be useful to enhance the effectiveness of ultrasound treatment.

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