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Determine the Moisture Distribution in Sewage Sludge by Drying Differential

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Abstract:

Moisture distribution in sewage sludge was considered as the essential of thermal drying. Some methods were given in literatures to test the moisture distribution, but there was no standard method to determine the critical water content between different kinds of water. The municipal sewage sludge was dried by hot air in this work. Based on the drying curve, the derivative of drying rate with respect to dry basis moisture content was brought out to analyze the moisture distribution in sewage sludge. Results show that this method can easily determine the free water, interstitial water, surface water and bound water with a high accuracy. The present work can provide new insight to determine the moisture distribution in sewage sludge, which was still lacking in the literatures.

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Periodical:

Applied Mechanics and Materials (Volume 665)

Pages:

404-407

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.665.404

Citation:

Cite this paper

Online since:

October 2014

Authors:

Wan Yu*, Pei Sheng Li

Keywords:

Drying Acceleration, Drying Rate, Moisture Distribution, Sewage Sludge

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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