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KMID : 1156220040300030239
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Journal of Environmental Health Sciences
2004 Volume.30 No. 3 p.239 ~ p.244
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A Study on Improving Dewaterability and Determining Optimum Condition of Digested Sludge Using Limestone
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Kim Eun-Ho
Seo Jeoung-Yoon
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Abstract
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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℃, 7, 45 g/l, 100 mesh, 30 min., and 2.66 × 10⁴N/㎡, respectively. On the basis of induced optimum conditions, if adding limestone in digested sludge, it estimated that its specific resistance was 1.43 × 1012 m/㎏. Therefore, it seemed that we could utilize limestone as conditioning agent for improving dewaterability of digested sludge.
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KEYWORD
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limestone, digested sludge, dewaterability
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