A2O工艺中反硝化除磷及过量曝气对生物除磷的影响46cfefe9a45177232e60a260

568Vol.56No.8Z0058JournalofChemicalindustryandEngineeringChinaAugustZ005妥妥妥妥妥妥妥妥妥妥妥妥妥妥、、、、A2O1!1!Z!111000ZZZ150090.--AZO.AZOP~B71.3%Z5%.CODZ00mgL-1400mgL-1COD10mgL-10.30mgL-1..AZOX703.1A0438-1157Z00508-1565-06Anoxicbiolo9icalPhosPhorusremovalandeffectofexcessiveaerationonbiolo9icalPhosPhorusremovalinA2OProcessWANGXiaolian1!WANGShuyin91!MAYon92!PENGYon9Zhen11SchoolofEnuironmentalandEnerg$EngineeringBeijingUniuersit$ofTechnolog$Beijing1000ZZChinaZSchoolof\uniciPalandEnuironmentalEngineering~arbinInstituteofTechnolog$~arbin150090~eilongjiangChinaAbstractApilot-scalenutrientremovalactivatedsludgesystembasedontheAZOconfigurationWasusedtotreatbreWeryWasteWater.intheeXperimenttheeXistenceofdenitrifyingphosphorusremovingbacteriaDPBandthecontributionofDPBtophosphorusremovalWasobserved.ThetestsshoWedtheaveragetotalamountofanoXicPuptakeaccountedfor70%ofthetotalamountofPuptakeofthesystematsteadystateoXygenreCuirementcouldbedecreasedsignificantlyaboutZ5%.DenitrifyingphosphateremovalresolvedthecompetitionfororganicsubstratesbetWeenPoly-PorganismsanddenitrifiersunderloWerorganicloading.Effluenttotal-Pconcentrationcouldachievelessthan0.30mgL-1andaverageeffluenttotal-NWaslessthan10mgL-1.itisclearlydemonstratedthatthephosphorusuptakealmoststoppedinanover-aeratedsystemthereleasedphosphoruscouldnotbetakenupfullyagain.ConseCuentlyincompletephosphorusuptakeledtotemporaryreductionofbiologicalphosphorousremovalefficiency.ittookaboutthetimeofonesludgeagetoeliminatethatdisturbance.KeyWordsAZOprocessanoXicbiologicalphosphorusremovaleXcessiveaerationbiologicalnitrogenandphosphorusremovalZ004-07-05Z004-08-31..1977.Z0377003Z003AA601010~0Z06Z00101Z0.ReceiveddateZ004-07-05.CorresPondin9authorPENGYongZhen.FoundationitemsupportedbytheNationalNaturalScienceFoundationofChinaZ0377003theNational~ighTechnologyDevelopmentProgramofChinaZ003AA601010andtheProectofBeiingScienceandTechnologyCommittee~0Z06Z00101Z0.\9.99.AZO\\9\(PAO\\999999.AZO9(DPB1～3]99P~B99999.99COD50%930%50%99.AZO9AZO999HH9\9.11.1AZ/O1.98999\94.51L9===1=1.5=Z.5=5.9Z5L.1999.9.\9\.Z1C9I150Ld-19~RT8.5h9SRT1Zd9MLSS3000mgL-190.59Z.59DOZ～3mgL-1.Fig.1SchematicdiagramofAZOprocess1_feedtank;Z_peristalicpump;3_pre-anoXic;4_anaerobic;5_anoXic;6_aerobic;7_settler;8_airpump;9_airfloWmeter;10_stirrerOin_influent;OR_internationalrecirculationfloW;Or_returnsludgefloW;OW_WastedsludgefloW1.Z9COD9Na~CO3NaO~p~.I(3～3.4mlL-19(0.1～0.30gL-19K~ZPO4(0.0Z～0.07gL-19Na~CO3(0.05～0.15gL-19MgSO47~ZO(0.05gL-19CaClZZ~ZO(0.01gL-191.TablelCharacteristicsofinfluentwastewaterParametersMin/MaXAverageCODCr/mgL-1180_46034Z.8BOD5/mgL-11ZZ.4_ZZ6.8175.46N~+4-N/mgL-136.6_55.845.44TN/mgL-143.3_63.848.56PO3-4-P/mgL-16.18_9.157.65alkalinity/mgL-1350_4003809TCOD\SCOD\N~+4-N\NO-3-N\NO-Z-N\TN\PO3-4-P\p~\TP\\DO\665156ORP~MLSS~MLVSS9.DO~ORP~p~WTW-p~/OXi340i.9.Z.Table2RuncyclesofexperimentsRuncycleScenarioI/(0_40d)accumulationofPAOsH/(40_80d)anoXicphosphorusuptake皿/(80_106d)eXcessiveaerationZZ.1AZO99(PAO)99.ZAZO~~.99409ZZ.5%60%9Z94079.5%100%995%95.6～8.9mg*L-190.30mg*L-1.99991.Z89WarangkanaPunrattanasin[4.Fig.ZPremovalinAZOprocess＠influ.凶anae.efflu.。anoX.efflu.Osys.efflu.3AZO.399Fig.3RatioofPremovaltoanoXicPremovalZ0%65%(40)9971.3%.9ZZ.Zmg*L-198.Zmg*L-1.999DO999Z5%(DO90.4Zm3*h-10.3Zm3*h-1)9.9999.[59Z0%～40%9940%.4AZO.96.7mgP*gMLSS-1*h-194.6ZmgP*(gMLSS)-1*h-19Z.08mgP*(gMLSS)-1*h-19P~B9.9AZO99P~B9DPB9P~B9999Mond99*7651*8AZO9P~B999P~B9.9()990999.Fig.4PreleaseandPuptakecharacteristicofsludgeZ.Z5AZO\99.936.6～55.8mg*L-1945.44mg*L-19TN7.6～10.8mg*L-199.Zmg*L-1979.9%91～Zmg*L-199Yuan[69Yuan91～3mg*L-19COD99COD9..Z.3COD6I～HCOD99COD9COD.9COD18Z～460mg*L-1934Z.8mg*L-19COD9.6～37.4mg*L-19Z6.5mg*L-19COD87.6%～97.35%99Z.3%999CODFig.5NremovalinAZOprocessOinflu.9回efflu.9凶PremovalFig.6CODremovalinAZOprocess回influ.9。anae.9＠anoX.9Oefflu.9凶tot.CODremoval9Aanae.CODremovalP~B9COD47.4～118mg*L-19COD66.6%～85.8%975.8%9COD9.5%99COD9P~BG79.Z.4999COD300mg*L-17.3Zmg*L-1.7980～84DO9990.37mg*L-15.7mg*L-1995%Z5.7%.9DOZ～3mg*L-1991390.89mg*L-19*8651*5687.15%.31.49mgL-1.Brdanovic7DOP~BPAOP~B0PAOPAOP~B.P~BP~BNAD~+.P~BPAOP~B.Fig.7EffectofeXcessiveaerationonPremoval回influ.凶[e-mail]～3mgL-1P~BP~BP~B.DO4～6mgL-1DO.3AZO.1AZO9Z.3%79.5%95.5%Z6.5mgL-19.ZmgL-10.3ZmgL-1.1.Z8.ZAZO71.3%.Z5%.36.7mgPgMLSS-1h-14.6ZmgPgMLSS-1h-1Z.08mgPgMLSS-1h-1P~B.4.References1GerakdMStevensJamesLBarnardBarryRabinoWitZ.OptimiZingbiologicalnutrientremovalinanoXicZones.WaterScience&Technolog$1999396113118ZBortoneGSaltarelliRAlonsoVSormRWannerJTilcheA.BiologicalanoXicphosphorusremoval-the96518AZODEP~ANOXprocess.WaterScience&Technolog$919969341C11971Z83KubaT9VanLoosdrechtMCM9~einenJJ.PhosphorusandnitrogenremovalWithminimalCODreCuirementbyintegrationofnitrificationinatWo-sludgesystem.Wateresearch.19969307C170Z717104WarangkanaPunrattanasin.investigationoftheeffectsofCOD/TPratioontheperformanceofabiologicalnutrientremovalsystemCDissertation.VirginiaCVirginiaPolytechnicinstituteandStateUniversity919975BarkerPS9DoldPL.DenitrificationbehaviorinbiologicaleXcessphosphorusremovalactivatedsludgesy