DO对除磷过程的长期影响彭赵旭

43420114JOURNALOF[e-mail]2．130024DOSBRDO5.5～7.0mg/L0.5～1.5mg/LDOEBPR．pH7.2～7.623±0.5℃DO．DO43.08%．30minDO6.2711.45mg·g－1·h－145.24%．βPHBDO．DODO．SBRX703.1A0367－6234201104－0042－05Long-termeffectofDOonphosphorusremovalprocessPENGZhao-xu1HUOMing-xin2PENGYong-zhen1GUILi-juan1LIUXu-liang1YUZhen-bo11．StateKeyLaboratoryofUrbanWaterResou[e-mail]entalSciencesNortheastNormalUniversity130024ChangchunChinaAbstractTostudythelong-termeffectofdissolvedoxygenDOonphosphorusremovalprocessthecharac-teristicsofenhancedbiologicalphosphorusremovalEBPRundertheDOlevelof5.5－7.0mg/Land0.5－1.5mg/LwereinvestigatedsystematicallyusingsequencingbatchreactorSBR．TheresultsshowedthatwhenpHwasin7.2－7.6andtemperaturewasat23±0.5℃highDOhadadverseimpactonbothphos-phorusreleaseprocessandphosphorusuptakeprocess．Theamountofreleasedphosphorusinanaerobicperiodwas43.08%lowerthanthatunderlowDOcondition．Phosphorusuptakeprocesswentfastduringtheinitial30mininaerobicperiod．Themaximumspecificphosphorusuptakeratewas6.2711.45mg·g－1·h－1un-derhighDOandlowDOconditionsrespectively．Analysisindicatedthatthemainreasonofdeteriorationofphosphorusremovalprocesswasdeficiencyofpoly－β－hydroxybutyratePHBcausedbyexcessiveaerationandmoreinfluentcarbonsourceusedfordenificationprocess．HighDOdidnothaveobviousadvantageonre-strainingfilamentoussludgebulkingthanlowDO．Theimprovementofphosphorusremovalwasusuallyassoci-atedwiththeimprovementofsludgesettleability．KeywordsdissolvedoxygenSBRprocessexcessiveaerationphosphorusreleasephosphorusuptake2009－11－20．“”EDBS07/1－53974092．1983—1949—．．DO1．DO．DO2DO3、4－5．6DOSND．7DO．DOSBRDO．11.1CH3COONa·3H2O0.66g/LNH4Cl0.17g/LKH2PO40.02g/LNaHCO30.4g/LMgSO4·7H2O0.08g/LCaCl20.04g/L10.5mL8．1mg·L－1CODNH4+－NPO43－－PCaCO3300～33040～454.5～5．0400～4501.2SBR700mm200mm12L1．10cm．．．3L、0.5h、2.0h、、．100mLMLSS2000mg/L．SRT12.5d10h．23±0.5℃．pH、DO、ORP．A2O1SBR1、SBR2．DOSBR1、SBR2．1.3COD、NH4+－N、NO2－－N、NO3－－N、PO43－－P、SV、SVI、MLSSMLVSS90.45μm4℃3hPHB10．DO、pH、ORPWTW340i．34512681291013111—DO2—pH3—4—DO5—pH6—ORP7—8—ORP9—10—11—12—13—．122.1DOPO43－－PDONOx－－N11－12、13．14．Jens15NO2－－N5mg/L．DO．2DOSBR1DO6mg/L．NH4+－N120minNOx－－NpHaDOb16－17．30minPHB18．PHB19．PO43－－PPO43－－P．DO．2.2DOPO43－－PSBR2SBR1．·34·4DODO1.0mg/L3DOSBR1pHaDOb．PO43－－P120min．30min11.45mg·g－1·h－1DO6.27mg·g－1·h－182.62%．NH+4-NPO3-4-PNO-2-NDONO-3-NpH2420161284020406080100120140160t/min10864208.48.38.28.18.07.97.8pHDO/（mg·L-1）籽(NH+4-N,NO2--N,NO3--N,PO3-4-P)/(mg·L-1)ab2DO、NH+4-NPO3-4-PNO-2-NDONO-3-NpH302520151054.03.53.02.52.01.51.00.50DO/(mg·L-1)8.07.97.87.77.67.57.4pH020406080100120140160t/min籽(NH+4-N,NO2--N,NO3--N,PO3-4-P)/(mg·L-1)ab3DO、DODO．SBR11/4PHB．MLVSSPHB4.5mg．PHBSBR2CODDO．2.3DO．20－21．DO．SBR1SBR2DO6.36、1.25mg/L4．205．SBR1SBR2PO43－－P21.02、27.49mg/LPO43－－P5.44、0.12mg/L．SBR1SBR243.08%．7.56.55.54.53.52.51.50.5020406080100周期数DO/(mg·L-1)SBR1SBR24SBR1SBR2DO020406080100周期数籽(PO43--P)/(mg·L-1)SBR1厌氧末SBR1好氧末SBR2厌氧末SBR2好氧末2824201612845SBR1SBR2NOx－－N．SBR1DOSBR2SNDSBR222．23SBR1SBR2SND24.43%34.74%SBR1SBR2NOx－－NPHB24．·44·432.4DODO．Rob25、SVI3．DO．26A/ODO2mg/L0.5mg/LSVI110mL/g160mL/g．27SBRDODO．SVI460mL/gDO5.5～7.0mg/LDO0.5～1.5mg/L6．30SBR1SBR2SBR1SBR2DO．SBR1COD30mg/LSBR2SBR2SBR1SBR2SBR1．Andrew28．1.23g/mL291.005g/mL28．525500475450425400375350325300020406080100周期数低DO高DOSVI/（mL·g-1）6SRTSRT．DO．30SBR1SBR2SRTDO．31PHBMLVSS4.5mgDOEBPR．2DO0.5～1.5mg/L、DO5～7mg/LSNDNOx－－NDOEBPR75.67%．3DO．．1MINOTLOOSDRECHTvanMCMHEIJNENJJ．MicrobiologyandbiochemistryoftheenhancedbiologicalphosphorusremovalprocessJ．WatRes199832113193－3207．2ETTERERTWILDERERPA．Generationandproper-tiesofaerobicgranularsludgeJ．WaterSciTechnol200143319－26．3．A/OJ．200726117－20．4．SBBRJ．2006265728－733．5．SBRJ．200420840－42．6GUOJianhuaPENGYongzhenWANGShuyingetal．Long－termeffectofdissolvedoxygenonpartialnitrifi-cationperformanceandmicrobialcommunitystructureJ．BioresourceTechnology20091002796－2802．·54·4DO7．、J．200829123342－3346．8TSUNEDASOHNOTSOEJIMAKetal．Simultane-ousnitrogenandphosphorusremovalusingdenitrifyingphosphate－accumulatingorganismsinasequencingbatchreactorJ．BiochemicalEngineeringJournal200627191－196．9．M．4．200238－40．10WANGDBLIXMYANGQetal．Biologicalphosphorusremovalinsequencingbatchreactorwithsingle－stagleoxicprocessJ．BioresourceTechnolo-gy2008995466－5473．11KUBATVLOOSDRECHTvanMCMMURNLEIT-NEREetal．Kineticsandstoichiometryinthebiolog-icalphosphorusremovalprocesswithshortcycletimesJ．WatRes1997314918－928．12KUBATMURNLEITNERELOOSDRECHTvanMCMetal．Ametabolicmodelforbiologicalphosphor-usremovalbydenitrifyingorganismsJ．Biotechnolo-gyandBioengineering199652685－695．13．、J．200319133－36．14．J．2003256323－325．15MEINHOLDJARNOLDEISAACSS．Effectofni-triteonanoxicphosphateuptakeinbiologicalphos-phorusremovalactivatedsludgeJ．WatRes19993381871－1999．16GUOJHYANGQPENGYZetal．Biologicalni-trogenremovalwithreal-timecontrolusingstep-feedSBRtechnologyJ．EnzymeMicrobTech2007401564－1569．17PAVELJNHVALANKOCIJANJetal．Experi-mentaldesignofanoptimalphasedurationcontrolstrategyusedinbatchb