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Article: Quantification of the shear stresses in a microbial granular sludge reactor

TitleQuantification of the shear stresses in a microbial granular sludge reactor
Authors
KeywordsActivated sludge
Energy dissipation
Granule
Hydrodynamic
Model
Sequencing batch reactor (SBR)
Shear stress
Issue Date2009
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2009, v. 43 n. 18, p. 4643-4651 How to Cite?
AbstractSince a certain level of hydrodynamic shear force is needed in the formation of microbial granules for wastewater treatment, a method for quantifying the shear stresses in a microbial granular sludge reactor is highly desirable. In this work a novel energy-dissipation-based model was established and validated to quantitatively describe the shear stresses in a granular sludge sequencing batch reactor (SBR). With this model, the shear stress at the solid-liquid interface in an SBR was estimated and the relative magnitudes of shear stresses induced by fluid, gas bubble and collision on granules were evaluated. The results demonstrate that the effect of reactor geometry on the global shear stress was significant. Both the shear stress at the microbial granule surface and the biomass-loss rate increased with an increase in biomass concentration in the SBR. The gas bubble and the collision were found to be the main source for the shear stress at the granule surface. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/124567
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
Funding AgencyGrant Number
Natural Science Foundation of China50625825
50738006
50828802
Key Special Program on the S&T for the Pollution Control and Treatment of Water Bodies2008ZX07316-002
2008ZX07316-003
Funding Information:

The authors wish to thank the Natural Science Foundation of China (50625825, 50738006 and 50828802), the Key Special Program on the S&T for the Pollution Control and Treatment of Water Bodies (2008ZX07316-002 and 2008ZX07316-003) for the partial support of this study.

References

 

DC FieldValueLanguage
dc.contributor.authorRen, TTen_HK
dc.contributor.authorMu, Yen_HK
dc.contributor.authorLiu, Len_HK
dc.contributor.authorLi, XYen_HK
dc.contributor.authorYu, HQen_HK
dc.date.accessioned2010-10-31T10:41:44Z-
dc.date.available2010-10-31T10:41:44Z-
dc.date.issued2009en_HK
dc.identifier.citationWater Research, 2009, v. 43 n. 18, p. 4643-4651en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124567-
dc.description.abstractSince a certain level of hydrodynamic shear force is needed in the formation of microbial granules for wastewater treatment, a method for quantifying the shear stresses in a microbial granular sludge reactor is highly desirable. In this work a novel energy-dissipation-based model was established and validated to quantitatively describe the shear stresses in a granular sludge sequencing batch reactor (SBR). With this model, the shear stress at the solid-liquid interface in an SBR was estimated and the relative magnitudes of shear stresses induced by fluid, gas bubble and collision on granules were evaluated. The results demonstrate that the effect of reactor geometry on the global shear stress was significant. Both the shear stress at the microbial granule surface and the biomass-loss rate increased with an increase in biomass concentration in the SBR. The gas bubble and the collision were found to be the main source for the shear stress at the granule surface. © 2009 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subjectActivated sludgeen_HK
dc.subjectEnergy dissipationen_HK
dc.subjectGranuleen_HK
dc.subjectHydrodynamicen_HK
dc.subjectModelen_HK
dc.subjectSequencing batch reactor (SBR)en_HK
dc.subjectShear stressen_HK
dc.subject.meshAlgorithms-
dc.subject.meshBiomass-
dc.subject.meshBioreactors-
dc.subject.meshSewage - chemistry - microbiology-
dc.subject.meshWaste Disposal, Fluid - methods-
dc.titleQuantification of the shear stresses in a microbial granular sludge reactoren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=43&issue=18&spage=4643&epage=4651&date=2009&atitle=Quantification+of+the+shear+stresses+in+a+microbial+granular+sludge+reactoren_HK
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2009.07.019en_HK
dc.identifier.pmid19647851-
dc.identifier.scopuseid_2-s2.0-71749106121en_HK
dc.identifier.hkuros175087en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-71749106121&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue18en_HK
dc.identifier.spage4643en_HK
dc.identifier.epage4651en_HK
dc.identifier.isiWOS:000271439600021-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridRen, TT=35367163400en_HK
dc.identifier.scopusauthoridMu, Y=7103374005en_HK
dc.identifier.scopusauthoridLiu, L=36066389900en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridYu, HQ=13008678100en_HK
dc.identifier.citeulike5340178-

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