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Thermochemical liquidization of dewatered sewage sludge

✍ Scribed by Yutaka Dote; Shin-Ya Yokoyama; Tomoaki Minowa; Takashi Masuta; Kazuaki Sato; Shinji Itoh; Akira Suzuki

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
584 KB
Volume
4
Category
Article
ISSN
0961-9534

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✦ Synopsis

Dewatered sewage sludge (approximately 80% moisture content) was liquidized by a heating process in order to be transported through a pipeline, and the pressure loss of liquidized sludge measured. The dewatered sludge could be liquidized at temperatures above 150-175"C, and the viscosity of the liquidized sludge could be reduced to that of concentrated sludge (approximately 98% moisture content). The liquidized sludge showed pseudoplasticity. Liquidized sludge, which has a high solid concentration, could be transported by pumping through a pipe with the same pressure loss as that of concentrated sludge. The pressure loss could be calculated using Fanning's equation.

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