Assessing the effect of anionic surfactants on nitrogen removal in activated sludge process

Jiao, Y, Othman, M and Marriott, P 2009, 'Assessing the effect of anionic surfactants on nitrogen removal in activated sludge process', in Peter Sterling (ed.) Ozwater 2009, Melbourne, Australia, 16 - 18 March 2009, pp. 1-6.


Document type: Conference Paper
Collection: Conference Papers

Title Assessing the effect of anionic surfactants on nitrogen removal in activated sludge process
Author(s) Jiao, Y
Othman, M
Marriott, P
Year 2009
Conference name Australia's National Water Conference and Exhibition: From Challenges to Solutions
Conference location Melbourne, Australia
Conference dates 16 - 18 March 2009
Proceedings title Ozwater 2009
Editor(s) Peter Sterling
Publisher Australian Water Association - AWA
Place of publication Artarmon, Australia
Start page 1
End page 6
Total pages 6
Abstract The aims of this study are to assess the effect of the presence of anionic surfactants on activated sludge bacteria. were selected as model anionic surfactants. Oxygen uptake rate (OUR) and nitrification inhibition tests for Sodium dodecylbenzene sulphonate (SDBS) and sodium dodecyl sulfate (SDS)at concentrations between 10 mg/L and100 mg/L were assessed according to ISO standard methods . SDS and SDBS showed a strong inhibitory effect of 50% - 60% to OUR at 10°C but SDS had a less significant inhibition at 20°C. Inhibition to nitrification was significant for both SDS and SDBS at all conditions tested. The results indicate that increased concentrations of anionic may have an adverse effects on the performance of activated sludge processes.
Subjects Environmental Technologies
Keyword(s) wastewater treatment
anionic surfactants
sodium dodecylbenzene sulphonate SDBS
sodium dodecyl sulfate SDS
oxygen uptake rate
nitrification inhibition
ISBN 9781921335082
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