Enhanced combined assimilative and bound phosphorus uptake in concurrence with nitrate removal in pre-anoxic cyclic sequencing batch reactor

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dc.contributor.authorKhursheed, Anwar
dc.contributor.authorAli, Muntjeer
dc.contributor.authorMunshi, Faris Mohammad A.
dc.contributor.authorAlali, Abdulrhman Fahmi
dc.contributor.authorKamal, Mohab Amin
dc.contributor.authorAlmohana, Abdulaziz Ibrahim
dc.contributor.authorAlrehaili, Omar
dc.contributor.authorGaur, Rubia Z.
dc.contributor.authorTyagi, Vinay Kumar
dc.contributor.authorKhan, Abid Ali
dc.contributor.authorGoel, Gaurav
dc.date.accessioned2022-09-29T08:42:52Z
dc.date.available2022-09-29T08:42:52Z
dc.date.issued2022-09-21
dc.description.abstractNeedless to specify, controlling nitrogen and phosphorus discharge from wastewater treatment plants is synonymous with the prevention of eutrophication of surface waters, as one of the major issues related to water security. The present study investigates the performance of a pre-anoxic sequencing batch reactor (SBR) working on the basis of intermittent aeration, operated at varied carbon (bCOD) to nitrogen (C/N) ratio of 3, 7.5, and 10, and readily biodegradable (rbCOD) to slowly biodegradable (sbCOD) ratio of 0.1, 0.25, and 0.5. The findings revealed that an enhanced nitrogen removal was observed, together with higher C/N and rbCOD to sbCOD ratios. The results also show a consistent increase in total phosphorus removal with an increase in nitrogen removal. The phosphorus uptake of sludge varied from 0.02 – 0.045 mgP/mgVSS (avg. 0.031 ± 0.004), which resulted in enrichment levels of 0.88 – 1.68 times the stoichiometric value of 0.0267 mgP/mgVSS (avg. 1.45 ± 0.14). On an average basis, the assimilative total phosphate (TP) content was increased by 0.008 gTP/gNO -/3 -N removal rate. The excess phosphorus removal was due to the formation of poorly soluble polyvalent phosphate compounds, which was found based on dry analysis, which persisted as bound phosphate in the sludge.en_UK
dc.identifier.citationKhursheed A, Ali M, Munshi FMA, et al., (2022) Enhanced combined assimilative and bound phosphorus uptake in concurrence with nitrate removal in pre-anoxic cyclic sequencing batch reactor, Environmental Technology and Innovation, Volume 28, November 2022, Article number 102909en_UK
dc.identifier.issn2352-1864
dc.identifier.urihttps://doi.org/10.1016/j.eti.2022.102909
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18487
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectEnhanced phosphate uptakeen_UK
dc.subjectCarbon to nitrogen ratioen_UK
dc.subjectrbCODen_UK
dc.subjectsbCODen_UK
dc.subjectSBRen_UK
dc.titleEnhanced combined assimilative and bound phosphorus uptake in concurrence with nitrate removal in pre-anoxic cyclic sequencing batch reactoren_UK
dc.typeArticleen_UK

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