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28 32009 5 ENVIRONMENTALCHEMISTRYVol.28,No.3May 2009 2008721. ＊(No.50138010,50578114);(No.113-10-0044018);(No.B604);;(DERC)(No.2005RD001).＊＊.＊黄满红1,2 李咏梅2＊＊ 顾国维2(1 ,,201620;2 ,,,200092) --,、,、,.,Freundlich、,.,K、K0.400.98,,.(10%).、,. ,A/A/O,,. --(A/A/O)[1],,A/A/O、A/A/O.[2—4],.,50%—60%,. --,,A/A/O,GFC,.1 ,CODCr204—440mg·l-1,TOC40—138mg·l-1,TN50—70mg·l-1,TP4.5—6.5mg·l-1,pH7.0—8.0.,1.1 Table1 Componentofthesyntheticwastewater/mg·l-1/mg·l-1NaHCO3125.00FeCl3·6H2O0.0937KH2PO424.00H3BO30.0094NH4Cl100.00CuSO4·5H2O0.0019180KI0.0112KCl4.17MnCl2·4H2O0.0075MgSO4·7H2O27.50ZnSO4·7H2O0.0075CaCl22.50EDTA0.6248 3:405 (A/O).25℃,15d,,MLSS3000mg·l-1.(SRT)15d,100%,//1∶1∶3. 0—0.20mg·l-1,0.25—2.10mg·l-1,6.45—8.13mg·l-1. 、1L,125r·min-1,,3500r·min-115min,,.2 、FreundlichLangmuir[5](2),3.3,,Langmuir,2,Freundlich.2 (mg·l-1)Table2 Proteinconcentrationintheaqueousphaseunderadsorptionequilibriumconditions(mg·l-1)15.008.517.895.5225.0013.3111.249.3550.0026.7923.6820.68100.0053.6547.3843.35150.0084.0072.2362.89200.00105.7196.7189.783 Table3 AdsorptionisothermsofproteinsontothesludgeR2Kp=0.41110.9915Langmuirqm=19.9158,a=-4.45×10440.5732Freundlichkf=0.3557,n=0.96840.9918Kp=0.49080.9988Langmuirqm=22.0616,a=-2.6425×10460.4568Freundlichkf=0.5798,n=1.03150.9992Kp=0.58530.9889Langmuirqm=23.3129,a=-2.5345×10460.3478Freundlichkf=0.9544,n=1.13060.9954:Kp,qmaLangmuir,kfnFreundlich. ,、Kp,、,;Freundlich,,.3 、,TOC53mg·l-1.2892mg·l-1.1.1,10min,,,10min.,10min1h,406 28,...1 Fig.1 Degradationofproteinsandaminoacids4 A/A/O、、1L,31L,,,.125r·min-1,. 2(ASM2)[6],,(1)、(2)(3)A/A/O:rb()=ηFeKbSSKS+SSX(1)rb()=ηNO3KbSSKS+SSX(2)rb()=KbSSKS+SSX(3),Kb,KS,ηFeηNO3,XVSS,SS. ,,(4).dS/dt=(S-Se)/t(4)XtS0-Se=-KSKbSe+1Kb(5),S0,Se,t.x=1/Se,y=Xt/(S0-Se),Km=-(KS/Kb),m=1/Kb,(5)(6):y=Kmx+m(6) 、4.4 Table4 Degradationkineticparametersofproteins:y=Kmx+mR2Kb/mg·g-1VSS·h-1KS/mg·l-1ηy=3.5336x+452.190.96352.217.810.40y=1.9213x+185.090.93695.4010.380.98y=1.9391x+155.660.97276.4212.461 4,、Kb,KbKS、.、η0.40,0.981.00,ASM2 3:407 (ηFeηNO30.10.6).,A/A/O. A/A/O,5.5,,10%.5 Table5 Differencebetweenpredictionandmeasurement/mg·l-1/mg·l-1/mg·l-1/%35.1932.762.436.8917.2815.601.689.724.284.430.143.355 (GFC).、,2120min、GFC,2,,、.,1000—2000020000—670000,1000—2000020000—670000.、,10min,7h,,.,.(400),,.2 (A)、(B)(C)120minGFCFig.2 GFCchromatographofeffluentsfromanaerobic(A),anoxic(B)andaerobic(C)reactorsafter120mindegradation ,Freundlich、.,10%,.、,、,,(400). [1] KoichiS,ShinyaM,SatoshiOetal.,ModelingandExperimentalStudyontheAnaerobic/Aerobic/AnoxicProcessforSimultaneousNitrogenandPhosphorusRemoval:TheEffectofAcetateAddition.ProcessBiochemistry,2008,43∶605—614[2] BaezaJA,GabrielD,LafuenteJ,EffectofInternalRecycleontheNitrogenRemovalEfficiencyofanAnaerobic/Anoxic/Oxic(A2O)WastewaterTreatmentPlant(WWTP).ProcessBiochemistry,2004,39∶1615—1624408 28[3] RodrigoMA,SecoA,Penya-rojaJMetal.,InfluenceofSludgeAgeonEnhancedPhosphorusRemovalinBiologicalSystems.Wat.Sci.Tech.,1996,34∶41—48[4] BarkerPS,DoldPL,CODandNitrogenMassBalancesinActivatedSludgeSystems.Wat.Res.,1994,29∶633—643[5] ,,,(Ⅱ).,2006,25∶414—419[6] MogensH,CharacterizationofWastewaterforModelingofActivatedSludgeProcess.Wat.Sci.Tech.,1992,25∶1—15DEGRADATIONKINETICMODELOFPROTEINSINACTIVATEDSLUDGETREATMENTSYSTEMSFORMUNICIPALWASTEWATERHUANGMan-hong1,2 LIYong-mei2 GUGuo-wei2(1 CollegeofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai,201620,China;2 StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai,200092,China)ABSTRACT Theremovalcharacteristicsbyadsorptionanddegradationofproteinswerestudiedinanaerobic/anoxic/oxic(A/A/O)municipalwastewatertreatmentsystems.Theadsorptionisothermsandthedegradationkineticsofproteinsbythesludgeunderanaerobic,anoxicandaerobicconditionswereseparatelydetermined.ThedegradationmodelparameterswerecalibratedbytheexperimentaldataobtainedfromtheperformanceofA/A/Osystem.Theresultsshowedthattheadsorptionofproteinsontothethreekindsofsludgecouldbeade-quatelydescribedbyFreundlichmodel.Hydrolysisratewasthekeystepinthedegradationprocessofpro-teins.Theratiosofproteindegradationrateunderanaerobicandanoxicconditionstothatunderoxicconditionswere0.4and0.98,respectively,indicatingthatproteinwaseffectivelydegradedunderanaerobicandanoxicconditions.Themodelwasusefulinforecastingtheeffluentqualityofanaerobic,anoxicandoxictanksintheA/A/Osystem,andtherelativeerrorwaslessthan10%.Theaccumulationofacid-solubleproteinwasnotobsevedintheanaerobic,anoxicandoxictanks. Keywords:protein,A/A/Omunicipalwastewatertreatmentsystem,adsorption,degradationkinetics.