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Revised Capillary Suction Time (CST) test to reduce consumable costs and improve dewaterability interpretation

Scholz, M 2006, 'Revised Capillary Suction Time (CST) test to reduce consumable costs and improve dewaterability interpretation' , Journal of Chemical Technology and Biotechnology, 81 (3) , pp. 336-344.

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Abstract

The aim of this paper is to critically assess the standard capillary suction time (CST) test and to propose a modified device (prototype) and a revised CST procedure. The empirical CST test (using a circular funnel) is well established as the leading method for the determination of sludge dewaterability in spite of its current shortcomings such as restricted modelling possibilities, and therefore the ability to predict physical processes such as the amount of water bound by the paper. Nevertheless, the CST apparatus is portable, and the method is easy to conduct, quick, cost-effective and accurate, if the product of solid concentration and average specific resistance to filtration is of interest. A novel prototype with a rectangular instead of a circular funnel incorporating a stirrer (optional), and using a cheaper paper with similar or improved characteristics is proposed to reduce consumable costs and improve dewaterability interpretation.

Item Type: Article
Uncontrolled Keywords: Capillary Suction Time (CST), control, dewaterability, filtration, product design, sedimentation, sludge dewaterability
Themes: Built and Human Environment
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Civil Engineering Research Centre
Journal or Publication Title: Journal of Chemical Technology and Biotechnology
Publisher: Wiley-Blackwell
Refereed: Yes
ISSN: 0268-2575
Depositing User: Users 47901 not found.
Date Deposited: 30 Jun 2011 11:42
Last Modified: 20 Aug 2013 16:59
URI: http://usir.salford.ac.uk/id/eprint/16528

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