Novel cake characteristics of waste-activated sludge

R. M. Wu, D. J. Lee*, C. H. Wang, J. P. Chen, R. B.H. Tan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Breaking down the time limit constraints for conventional compression-permeation (C-P) cell test, this work has, for the first time, experimentally evaluated the cake characteristics of viable waste-activated sludge subject to polyelectrolyte flocculation and to freeze/thaw treatment under a pressure range of 25-200kPa. There exists a threshold pressure exceeding which the cake structure would significantly deteriorate. Also, the present biological sludge is a 'super-compactible' sludge, whose compactibility is greater than most data ever reported in open literature. The information presented herein has implications to filter design/operation and can be used as a reference data set for examining the existing filtration theories.

Original languageEnglish
Pages (from-to)1358-1362
Number of pages5
JournalWater Research
Volume35
Issue number5
DOIs
StatePublished - 2001
Externally publishedYes

Keywords

  • Compression-permeability cell
  • Porosity
  • Specific resistance
  • Yield stress

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