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Effects of Salinity on Expression Dewatering of Waste Activated Sludge

✍ Scribed by D.S Jean; D.J Lee

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
56 KB
Volume
215
Category
Article
ISSN
0021-9797

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✦ Synopsis

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, doublelayer compression/hydrophobic interactions and ion exchange partially account for the experimental results.

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