HRT和曝气量对AAOBAF系统反硝化除磷性能的影响张为堂

20144CIESCJournal1436April2014654Vol.65No.4HRTAAO-BAF12,312,32,31110012421001243100124COD/TN4BAFHRTBAFAAO-BAFHLRBAFBAF3:1NH+472%AAOHRT4hBAFHLR3m3m2h1BAF8:1NH+4AAO-BAFPO43NH+490%NH+498%AAOHRT6hBAF4:1AAO-BAFCODNH+4TNPO4387%99%80%95%DOI10.3969/j.issn.0438-1157.2014.04.039X703.1A04381157201404143607EffectofHRTandaerationrateonperformanceofAAO-BAFsystemfordenitrifyingphosphorusremovalZHANGWeitang1,HOUFeng2,3,LIUQingsong1,SHAOYanqing2,3,XUEXiaofei2,3,PENGYongzhen1(1KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2BeijingBeihuaqingchuangEnvironmentalScienceandTechnologyCo.,Ltd.,Beijing100124,China;3BeijingEnterprisesWaterGroup(China)InvestmentLimited,Beijing100124,China)AbstractIntegratedanaerobic/anoxic/oxicprocesswithbiologicalaeratedfilter,AAO-BAFsystemwasusedtotreatdomesticwastewaterwithlowC/Nratioofabout4.ByadjustinginfluentflowrateoftheAAOreactorandaerationrateofBAF,theeffectofhydraulicretentiontime(HRT)andaerationrateontheperformanceoftheAAO-BAFsystemwasinvestigated.Theresultsshowedthatair/liquidratioandhydraulicloadrate(HLR)ofBAFhadgreatinfluenceonNH4+removal.Atair/liquidratio3:1,NH+4removalratedecreasedto72%.Further,whenHRT=4handHLRofBAFwas3m3m2h1,NH4+couldnotberemovedcompletelyevenwithahighair/liquidratioof8:1.ThisworkconfirmedthattherewasanobviousrelationshipbetweenPO43andNH+4removalefficienciesintheAAO-BAFsystem.TheNH+4removalshouldreach98%forover90%ofthePO43removal.WhenHRToftheAAOreactorwasgreaterthan6h,andair/liquidratioofBAFwasgreaterthan4:1,theaverageremovalefficienciesofCOD,NH+4,TNandPO43couldreach87%,99%,80%and95%respectively.2013-07-222013-09-101978—D121100000112001Receiveddate:2013-07-22.Correspondingauthor:Prof.PENGYongzhen,[e-mail]:supportedbytheScienceandTechnologyProjectsofBeijing(D121100000112001)andtheScientificResearchBaseandScientificInnovationPlatformofBeijingMunicipalEducationCommission.4HRTAAO-BAF1437Keywords:denitrifyingphosphorousremoval;biotechnology;aeration;oxidation;wastewaterDPAOsC/NBNR50%30%50%[1-5]AAO-BAFBAF[6-7]AAOHRTAAO-BAFHRT[8-9]HRT[10-11]BAFHLR110mh118200Lh1NH+480%[12-14]Albuquerque[15]BAF20Lh150%70%NH+4BAFHRTAAO-BAF196dAAOHRTBAFAAO-BAFAAO-BAF11.11AAO-BAFAAOBAFAAO930L238BAF10cm34mm1m33%BAFBAFAAOAAODPAOs70%[6]AAOBAFNH+4NO3AAO5AAOHRT10,8,6,54hRun1,2,3,41AAO-BAFFig.1SchematicdiagramofAAO-BAFsystem6514385BAF(R)(r)300%100%AAO23502670mgL1AAO60Lh1BAFAAO-BAF11.2C/NC/N4:121.3PO43NH+4NO2NO3(LachatQuik-Chem8000LachatInstrumentMilwaukeeUSA)TNTN/TOC(MultiN/C3100AnalytikJena,AG)COD[16]22.12HRT108hAAOCOD50mgL1AAOHRTAAOCODHRT106hBAF2AAO-BAFFig.2VariationofCODremovalperformanceinAAO-BAFCOD50mgL1AAOHRT4hBAF3m3m2h1AAOBAFCOD7259mgL1HRTCODAAOBAFAAOHRT5hBAFCOD50mgL12.2AAOAAONH+4NH+4BAF1AAO-BAFTable1OperationalconditionsforAAO-BAFsystemRunAAOBAFTime/dQ/Lh1HRT/hAerationrate/Lh1Air/liquidratioHRTBAF/hHLR/m3m2h113.0106052.61.212523.7586042.11.526783566031.627994568041.62951094659641.32.411014457.5412041.031451587.5424081.031591962Table2CharacteristicsofinfluentwastewaterusedinthisstudyRunCOD/mgL1NH+4-N/mgL1NO2-N/mgL1NO3-N/mgL1TN/mgL1PO43-P/mgL1C/N132677.40.080.0183.96.43.9232071.50.050.0378.26.14.1327465.60.090.0268.86.14.0429164.20.070.0367.45.64.3529566.20.020.0869.65.54.24HRTAAO-BAF1439BAFNH+43NH+4Run1Run3BAF1.22m3m2h13:1NH+4100%70%BAFNH+4NH+495dBAF4:16080Lh1BAFNLR0.83kgNH+4m3d199dNH+498%BAFNH+4AAOHRT5h4hBAFNH+4AAOHRT4hBAFHLR3m3m2h14:1NH+4BAF8:1NH+4196dBAFNH+493%NH+44.2mgL1NH+4NH4+13AAO-BAFBAF1.3h4:12.3TNAAO-BAFTN4AAOHRT10h5h7994dBAF3TN79%60%4AAO-BAFTNFig.4VariationofTNremovalperformanceinAAO-BAFTN80%AAOHRT4hTN70%HRT4hTNNH+4AAONO3BAFNH+43TNN2NH+4TN95109dTNBAF2.4AAOHRTAAO-BAF3AAO-BAFNH+4Fig.3VariationofNH+4removalperformanceinAAO-BAF6514405AAO-BAFPO43Fig.5VariationprofilesofPO43andremovalefficiencyinAAO-BAFsystem5HRTPO43TNAAOHRT6hBAF3:17.2mgL1AAO-BAF[17]Run3BAFAAOBAFNO3PO435AAOHRT54hBAFPO430.5mgL10.61.3mgL1AAOHRT6hWang[18]A2N-SBR3hPHA[19-20]HRT6AAOPO43Fig.6VariationprofilesofPO43concentrationinAAOreactorPHA[8]6AAOHRT6h4h60mgL135mgL12.53AAOHRTBAFAAO-BAF45TNPO43AAO-BAFTNPO43BAFNH+4AAO-BAFNH+4BAFNLRHLR7AAO-BAFPO43NH+490%NH+498%BAFNLRHLR0.85kgNH+4m3d12.0m3m2h1AAOHRT6hBAF4:1CODNH+4TNPO4387%3AAO-BAFNH+4TNPO43Table3PerformanceofAAO-BAFsystemforremovalofNH+4,TNandPO43MonitoringitemsAAOHRT/h108654PO43removal/%960.6950.916278620901.9794.1747.3TNremoval/%791.2791.1646.1796.2801.5724.4702.8NH+4removal/%1000.2990.1775.5994.7980.5905.6940.9NLR/kgNH+4m3d10.660.070.740.050.510.180.810.090.930.080.980.050.960.04air/liquidratio5434448Theremovalefficiencieswere58%87%and93%95%from97dto99dandfrom100dto109drespectively.4HRTAAO-BAF14417NH+4PO43BAFNLRHLRFig.7CorrelationofNH+4removalwithremovalofPO43,NLRandHLRofBAF99%80%95%AAOC/NHRT11hTNTP72%91%[21]3AAO-BAFAAODPAOsC/NHRTBAFAAO-BAF1AAOAAOHRT6hAAOCOD50mgL12BAFNH+4NH+4AAO-BAFBAF4:1HRT1.3h3AAO-BAFBAFTNPO43TNPO4380%90%AAOHRT6hBAFNLRHLR0.85kgNH+4m3d12m3m2h1References[1]KubaT,vanLoosdrechtM