Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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A Study on Improving Dewaterability and Determining Optimum Condition of Digested Sludge Using Limestone

석회석을 이용한 소화슬러지 탈수성 개선 및 최적조건 결정에 관한 연구

  • Kim, Ean-Ho (Dept. of Environmental Engineering, Changwon National University) ;
  • Seo, Jeoung-Yoon (Dept. of Environmental Engineering, Changwon National University)
  • Published : 2004.09.01
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Abstract

The purposes of this study were to examine applicability of limestone as a conditioning agent and to determine the optimum conditions for improving dewaterability of digested sludge. The optimum conditions for temp., pH, dosage, particle size, time, and pressure was $30^{\circ}C$, 7, 45 g/l, 100 mesh, 30 min., and $2.66 {\times} 10^4 N/m^2$, respectively. On the basis of induced optimum conditions, if adding limestone in digested sludge, it estimated that its specific resistance was $1.43 {\times} 1012 m/kg$. Therefore, it seemed that we could utilize limestone as conditioning agent for improving dewaterability of digested sludge.

Keywords

References

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