Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151427
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dc.contributor.authorSuresh, Akshaykumaren_US
dc.contributor.authorGrygolowicz-Pawlak, Ewaen_US
dc.contributor.authorPoh, Leong Soonen_US
dc.contributor.authorMaszenan Abdul Majiden_US
dc.contributor.authorDominiak, Dominiken_US
dc.contributor.authorBugge, Thomas Vistisenen_US
dc.contributor.authorGao, Xinen_US
dc.contributor.authorNg, Wun Jernen_US
dc.date.accessioned2021-06-24T03:21:24Z-
dc.date.available2021-06-24T03:21:24Z-
dc.date.issued2019-
dc.identifier.citationSuresh, A., Grygolowicz-Pawlak, E., Poh, L. S., Maszenan Abdul Majid, Dominiak, D., Bugge, T. V., Gao, X. & Ng, W. J. (2019). Evidence for resistance of activated sludge flocs to deflocculative DO stress. Journal of Environmental Engineering, 145(4), 04019005-. https://dx.doi.org/10.1061/(ASCE)EE.1943-7870.0001505en_US
dc.identifier.issn0733-9372en_US
dc.identifier.urihttps://hdl.handle.net/10356/151427-
dc.description.abstractIn the published literature, deflocculation of aerobic biological flocs under low dissolved oxygen (DO) (< 0.5  mg/L) conditions is typically reported as occurring as early as after 1 h of oxygen deficiency. However, results of this study involving aerobic sludge from three different sources repeatedly indicated a lack of deflocculation after 24 h of low DO conditions. This finding has led to the conclusion that low DO might not be a direct cause of deflocculation. In addition to the low DO conditions, the sludge samples were not re-fed throughout the experiment, but deflocculation was still not observed. An analysis of the soluble microbial products (SMP) and loosely and tightly bound extracellular polymeric substances (EPS) was performed to improve understanding of the sludge’s behavior in response to low DO conditions. Results indicated no increase in SMP content or change in the tightly bound EPS content upon extended periods of low DO. It was concluded that high proteins concentration in the bound EPS improved flocs stability, and so contributed to the maintenance of floc integrity during extended periods of low DO conditions.en_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Environmental Engineeringen_US
dc.rights© 2019 American Society of Civil Engineers. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleEvidence for resistance of activated sludge flocs to deflocculative DO stressen_US
dc.typeJournal Articleen
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.identifier.doi10.1061/(ASCE)EE.1943-7870.0001505-
dc.identifier.scopus2-s2.0-85060715352-
dc.identifier.issue4en_US
dc.identifier.volume145en_US
dc.identifier.spage04019005en_US
dc.subject.keywordsActivated Sludgeen_US
dc.subject.keywordsFlocculationen_US
dc.description.acknowledgementThis project was supported by funding from Grundfos Holdings through project Understanding and Mitigation of Sludge Deflocculation During Nitrogen Removal Process.en_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
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