Effects of salinity on expression dewatering of waste activated sludge
Journal
Journal of Colloid and Interface Science
Journal Volume
215
Journal Issue
2
Pages
443-445
Date Issued
1999
Author(s)
Jean D.S.
Abstract
This work evaluates filtration followed by consolidation characteristics of sodium chloride containing activated sludge. Experimental results indicate that contact time and salinity level affect the dewatering efficiency. Considering the consolidation stage, a critical salinity level (around 1-2% (w/w)) is observed at which the contribution of secondary consolidation stage reaches its minimum. Meanwhile the creeping among constituent aggregates becomes much easier than in the original sludge. In addition, double-layer compression/hydrophobic interactions and ion exchange partially account for the experimental results.
SDGs
Type
journal article