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1Studyonrapidstart-upofEBPRsystemusingaerobicgranularsludgeasseedsludgeReporter:QingLiu2015.11.04

ContentsExperimentResultsanddiscussionIntroduction2Conclusion

ContentsIntroduction3

Eutrophication4

EBPR5Enhancedbiologicalphosphorusremoval(EBPR)technologyhasbeenwidelyconsideredasakeystrategyinpreventingeutrophicationandrecognizedastheadvancingfrontofresearchinwastewatertreatment.Enhancedbiologicalphosphorusremoval(EBPR)isachievedbyrecyclingpolyphosphate-accumulatingorganisms(PAOs)throughalternatinganaerobicandaerobicconditions.EBPREutrophicationPAOs

AerobicGranularSludge6AerobicGranularSludge(meandiameter500μm)Activatedsludgeflocs(meandiameter≈100μm)

AerobicGranularSludge7anoxiczoneaerobiczone-LiquidDONH4+CODNO3+NO2-DenseandporousstructureExcellentsettlingpropertyDiversemicrobialpopulationEspeciallyforenrichmentofthemicrobeswhichhavelonggenerationtimeandslowgrowthrate,(suchasphosphorousaccumulatingorganisms(PAOs))isofgreatsignificance.harddehydratingeasylossofmicroorganismSolve

ContentsExperiment8

Materialsandmethods1.ExperimentaldeviceFig.1:SchematicdiagramofsystemandphotoofSBRreactor9

Materialsandmethods2.OperatingconditionsReactorgeometry:60cmofheight,10cmofdiameter;workingvolume=4.5L;Reactorfeeding:potassiumacetateandsodiumpropionatewerefedascarbonsource;Ammonium:30mgNL-1;Phosphate:20mgPL-1;Constantmoderateairflow(4.0Lmin-1);COD(800mgL-1)andthecycletime(6h);SeedSludge:AerobicGranularSludgeIntialMLSS≈3.5g/L10

MaterialsandmethodsSBRcyclemode:thesystemwasoperatedwithalternatinganaerobic/aerobiccyclesover360min(Tab.1);Table1:SBRCyclemodeAnalyticalmethods:PO43-,NH4+,NO2-,NO3-,TN,COD,MLSSandMLVSSweremeasuredaccordingtothestandardmethodsofAPHA(1999).11

ContentsResultsanddiscussion12

5d17d17d17d1.Evolutionofaerobicgranula

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