反硝化除磷的影响特性试验赵庆

69Vol.6,No.920059TechniquesandEquipmentforEnvironmentalPollutionControlSep.2005赵　庆1　袁林江2　王志盈2　彭党聪2　王　磊2　王君莉1(1.,710064;2.,710055)　　SBR(//),。,COD230mg/L,、。30mg/L,,。C/P23,C/N5,SBR、90%。　　SBR　　　X703.1　　　A　　　1008-9241(2005)09-0020-05StudyoncharacteristicsofdenitrifyingdephosphorizationZhaoQing1　YuanLinjiang2　WangZhiying2　PengDangcong2　WangLei2　WangJunli1(1.SchoolofEnvironmentalScienceandEngineering,Chang′anUniversity,Xi′an710064;2.SchoolofEnvironmentalandMunicipalEngineering,Xi′anUniversityofArchitecturalScienceandTechnology,Xi′an710055)Abstract　InvestigationonthenitrogenandphosphorusremovalcharacteristicswascarriedbydenitrifyingdephosphorizationresponsibleforvarietyofacetateconcentrationandnitrateconcentrationrespectivelyinSBR.TheexperimentalresultsshowedthatwhentheinfluentCODwashigherthan230mg/L,therateofphosphorusreleaseanduptakehavenosignificantchangeresponsibleforvarietyofsubstrateconcentrationandthenitrateconcentrationwaslowerthan30mg/L,thehigherthenitrateconcentrationinanoxic,thehighertherateofphos-phorusuptake.Inanaerobic-anoxic-aerobicprocess,undertheconditionofC/P23andC/N5,morethan90%removalefficiencyofphosphorusandnitrogenwasobservedinSBRsystem.Keywords　denitrifyingdephosphorization;sequencingbatchreactor;acetate;nitrate:(50008014):2004-04-07;:2004-06-24:(1970～),,,,,。E-mail:[e-mail]1　　。-。,,。,PHB(β-),;,O2PHB,。,,,。/,。,。COD,。,,。,,O2。O2NO-3-NO2()。,。,2[1,2],9　:,,,。,SBR。2　2.1　1　Fig.1　SchematicdiagramofSBRsystem　　,,4.8L(1)。、、、、。ORP/pH。25℃。2.2　COD();();();();(N-(1-)-);MLSS()。2.3　2.3.1　试验用水。(NaAc),(NH4Cl)(KH2PO4)。K+、Mg2+、Ca2+、SO2-4Zn2+。1。2.3.2　接种污泥。,SBR,,/。1　Table1　Waterqualityofinfluent(mg/L)COD(SCOD)350、300、230、200PO3-4-P10±1NH+4-N16±1NO-x-N0±0.5TN16±1TP10±1SS0±0.5(CaCO3)350±10pH7.5±0.53　3.1　(2h,15min)-(3h)--。2。2,。,/(A/O)1,90%。,。216,SV22%、SVI64mL/g。、。2　Fig.2　Dailyvariationofremovalefficiencyofphosphorus3.2　/,。2h,NaNO3NO-3-N50mg/L。3。3　A/AFig.3　ProfileofPO3-4andNO-3-NconcentrationsinA/Aprocess　　3,37.5mg/L,NO-3-N42.6mg/L。3h,4.3mg/L,NO-3-N5.0mg/L。,。()。3.3　COD/,。(20mg/LNO-3-NNaNO3),。SBR,--,COD,。4。4　CODFig.4　ProfileofPO3-4concentrationsforonecycleresponsibleforvarietyofCOD　　4COD,、。(),()。[3,4],NO-3-N,;COD350、300、230200mg/L,50.13、52.29、38.4929.95mg/L。COD,。PHB,,。SBR1,;4COD300mg/L,COD,,,COD300mg/L,;COD200mg/L,,COD,。,()(NO-3-N)。,,,,PHB,[5]。,。3.4　COD2,COD230mg/L,COD,,。。;COD230mg/L,229　:2　CODTable2　RateofphosphorusreleaseresponsibleforvarietyofCODCOD(mg/L)350300230200(mgP/gSSh)6.486.416.324.23(mgP/gSSh)20.3920.3320.328.07(mgCOD/gSSh)23.1123.0022.0516.90(mgP/mgCOD)0.290.290.280.25,,PHB。。;4,1h,,2h,。,()。2,,,TCA,,。2,,()[1,6]。3,,COD,。COD230mg/L,COD,,;,,,。A2/O。PHB,,PHB,PHB。,PHB,。,,。3　CODTable3　RateofphosphorusuptakeunderaerobicandanoxicconditionsresponsibleforvarietyofCODCOD(mg/L)350300230200(mgP/gSSh)7.877.767.694.76(mgP/gSSh)3.183.142.701.483.5　,COD350mg/L,,,,56。5　Fig.5　EffectsofNO-3-Nconcentrationsonphosphorusuptakerateforonecycle6　Fig.6　EffectsofNO-3-Nconcentrationsonphosphorusuptakerateforonecycle236　　5,5、1020mg/L,8.65、9.019.36mgP/gSSh。5mg/L10mg/L,,,,。,,(),PHB,PHB。6,,,,30mg/L,,。PHB。,PHB,PHB,,。PHB,,。4　　(1)SBR,。(2)、,COD230mg/L,。(3)。30mg/L,PHB,。(4)C/P23,C/N5,SBR、90%。C/P20,C/N4,。(5)SBR,。[1]KubaT.,VanLoosdrechtM.C.M,HeijnenJ.J.Phosphor-usandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystem.WaterResearch,1996,30(7):1702～1710[2]AhnJ.,DaidouT.,TsunedaS.,eta.lMetabolicbehaviorofdenitrifyingphosphate-accumulatingorganismsunderni-trateandnitriteelectronacceptorconditions.JournalofBio-scienceandBioengineering,2001,92(5):442～446[3]BakerP.S.,DoldP.L.Denitrificationbehaviorinbiologicalexcessphosphorusremovalactivatedsludgesystem.WaterResearch,1996,30(4):769～780[4]KubaT.,VanloosdrechtM.C.M,BrandseF.A.,eta.lOc-currenceofdenitrifyingphosphorusremovingbacteriainmodifiedUCT-typewastewatertreatmentplants.WaterRe-search,1997,31(4):777～786[5]KubaT.,WachtmeisterA.,VanLoosdrechtM.C.M,eta.lEffectofnitrateonphosphorusreleaseinbiologicalphos-phorusremovalsystem.Wa.tSc.iTech.,1994,30(6):263～269[6]NgW.J.,OngS.L.,HuJ.Y.Denitrifyingphosphorusre-movalbyanaerobic/anoxicsequencingbatchreactor.Wa.tSc.iTech.,2001,43(3):139～14624