Please use this identifier to cite or link to this item: https://doi.org/10.2166/wst.2006.162
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dc.titleEffects of solid retention time on the performance of submerged anoxic/oxic membrane bioreactor
dc.contributor.authorNg, H.Y.
dc.contributor.authorTan, T.W.
dc.contributor.authorOng, S.L.
dc.contributor.authorToh, C.A.
dc.contributor.authorLoo, Z.P.
dc.date.accessioned2014-10-08T08:32:13Z
dc.date.available2014-10-08T08:32:13Z
dc.date.issued2006
dc.identifier.citationNg, H.Y., Tan, T.W., Ong, S.L., Toh, C.A., Loo, Z.P. (2006). Effects of solid retention time on the performance of submerged anoxic/oxic membrane bioreactor. Water Science and Technology 53 (6) : 7-13. ScholarBank@NUS Repository. https://doi.org/10.2166/wst.2006.162
dc.identifier.issn02731223
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87496
dc.description.abstractIn this study, four similar bench-scale submerged Anoxic/Oxic Membrane Bioreactors (MBR) were used simultaneously to investigate the effects of solids retention time (SRT) on organic and nitrogen removal in MBR for treating domestic wastewater. COD removal efficiencies in all reactors were consistently above 94% under steady state conditions. Complete conversion of NH4 +-N to NO3 --N was readily achieved over a feed NH4 +-N concentration range of 30 to 50 mg/L. It was also observed that SRT did not significantly affect the nitrification in the MBR systems investigated. The average denitrification efficiencies for the 3, 5, 10 and 20 days SRT operations were 43.9, 32.6, 47.5 and 66.5%, respectively. In general, the average effluent nitrogen concentrations, which were mainly nitrate, were about 22.2, 27.6, 21.7 and 13.9 mg/L for the 3, 5, 10 and 20 days SRT systems, respectively. The rate of membrane fouling at 3 days SRT operation was more rapid than that observed at 5 days SRT. No fouling was noted in the 10 days and 20 days SRT systems during the entire period of study. © IWA Publishing 2006.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.2166/wst.2006.162
dc.sourceScopus
dc.subjectDenitrification
dc.subjectFouling and sewage
dc.subjectMBR
dc.subjectNitrification
dc.subjectSRT
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.description.doi10.2166/wst.2006.162
dc.description.sourcetitleWater Science and Technology
dc.description.volume53
dc.description.issue6
dc.description.page7-13
dc.description.codenWSTED
dc.identifier.isiut000238143000003
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