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Effect of selected anionic surfactants on activated sludge flocs

Paper ID Volume ID Publish Year Pages File Format Full-Text
18503 42725 2006 9 PDF Available
Title
Effect of selected anionic surfactants on activated sludge flocs
Abstract

Results of a comparative study on the removal of anionic surfactants in the activated sludge flow system are presented. Three anionic surfactants: sodium dodecyl sulphate, sodium dodecylbenzene sulphonate and sodium alkyltrioxyethylene sulphate of different chemical structure were studied. All tested anionics strongly influenced the activated sludge flocs morphology and activity at the dilution rate above 0.05 h−1. As a result of saponification processes the sludge flocs became smaller and more circular in comparison to flocs, which had not been exposed to anionic surfactants. Also dehydrogenase activity of the activated sludge decreased with an increase of the dilution rate in all surfactant runs. Among the tested anionics, sodium dodecylbenzene sulphonate, which belongs to linear alkylbenzene sulphonates, exerted the strongest saponificative effect on sludge flocs and dehydrogenase activity of microorganisms.

Keywords
Activated sludge; Anionic surfactants; Image analysis; Flocs morphology
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Effect of selected anionic surfactants on activated sludge flocs
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 39, Issue 4, 2 August 2006, Pages 660–668
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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