Variable flow rate in compactible filter cakes

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

45 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)15-22
Journal / PublicationWater Research
Volume33
Issue number1
Publication statusPublished - Jan 1999
Externally publishedYes

Abstract

Traditional formulas used for design of filters and interpretation of experimental data depend upon a number of simplifications including negligible solid velocity u(s) and a superficial liquid flow rate q(L) which is assumed to be a function of time and independent of distance x through a filter cake. The extent of variation of u(s) and q(L) for highly compactible biosolids is discussed in this article. An approximate method based on well-known equations which rest on the assumption the q(L) is constant throughout a compressible cake at a given time is presented. Using previously available formulas, the assumption of constancy of q(L) is abandoned; and approximate equations yielding q(L) as a function of x are developed. Comparisons are made of the variation with distance of q(L), u(x), and relative velocities for cakes of different degrees of compactibility and slurries of varying concentrations. Problems related to verification of a given model are discussed.

Research Area(s)

  • Compactible cakes, Filtration, Flow models, Porosity, Relative velocity

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Variable flow rate in compactible filter cakes. / Tiller, Frank M.; Lu, Rong; Kwon, J. H. et al.
In: Water Research, Vol. 33, No. 1, 01.1999, p. 15-22.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review