Municipal sludge dewatering by belt filter press: effect of operating parameters | Zendy

Olivier J | Zendy; Vaxelaire J | Zendy

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Municipal sludge dewatering by belt filter press: effect of operating parameters

Author(s) -

Olivier J,

Vaxelaire J

Publication year - 2005

Publication title -

journal of chemical technology and biotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.64

H-Index - 117

eISSN - 1097-4660

pISSN - 0268-2575

DOI - 10.1002/jctb.1267

Subject(s) - dewatering , filter (signal processing) , environmental science , sewage sludge , filter press , screw press , waste management , filter cake , pulp and paper industry , environmental engineering , sewage , geotechnical engineering , engineering , mechanical engineering , electrical engineering

A belt filter press is commonly used to dewater sewage sludge but few data concerning this process have been published. A laboratory‐scale investigation was carried out to highlight the main process parameters affecting belt filter press efficiency as measured by the dry solid content of the final cake, percentage of solids recovered, and lateral sludge migration on the belt. Belt speed was determined to be the most important parameter: a low belt speed produces drier cakes with lower lateral sludge migration on the belt and also improves filtrate quality. At low belt speed, pressure is gently applied to the initial sludge, enabling a slow structuring of the cake and leading to better water release. Copyright © 2005 Society of Chemical Industry

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