Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Conditioning and Dewatering Properties of Digested and Thickened Sludge with Inorganic Conditioner

무기개량제를 이용한 소화 및 농축슬러지의 개량 및 탈수 특성

  • Kim, Jeong-Ho (Department of Environmental Engineering, Hankyong National University) ;
  • Nam, Se-Yong (Department of Environmental Engineering, Hankyong National University)
  • 김정호 (국립한경대학교 환경공학과) ;
  • 남세용 (국립한경대학교 환경공학과)
  • Received : 2011.09.16
  • Accepted : 2011.12.22
  • Published : 2011.12.31
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Abstract

Objectives: Wastewater treatment plants typically produce a large volume of waste sludge. In this study, the conditioning and dewatering properties of a digested and thickened sludge from an industrial wastewater treatment plant were investigated in order to improve the dewaterbility of the sludge. Methods: Jar-tests and Buchner funnel tests were carried out to assess the conditioning and dewatering properties of a waste sludge. TTF (Time to Filter Test) and SRF (Specific Resistance to Filtration) were adopted as the indices of sludge dewaterbility. Results: The valuation indices influencing the dewaterbility of the waste sludge, including TTF, SRF, water contents, VS/TS ratio and turbidity, were measured. The TTF and SRF of the digested and thickened sludge were decreased to 40 sec, $3.43{\times}10^{12}$ m/kg, and 39 sec, $1.09{\times}10^{12}$ m/kg, respectively. Conclusions: The conditioner composed of natural inorganic materials turned out to be effective in the reduction of sludge water contents.

Keywords

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