侧流除磷ERPSBR新工艺中生物脱氮及影响因素研究吉芳英

77Vol.7,No.720067TechniquesandEquipmentforEnvironmentalPollutionControlJul.2006ERP-SBR吉芳英　肖铁岩　罗固源(,400045)　　ERP-SBRCOD=338～527mg/L、TN=40～60mg/L、TP=8～11mg/L,COD≤39mg/L、NH3-N≤1.8mg/L、TN≤5.8mg/L、TP≤0.29mg/L,72%。:SBRDO;、;,SRT:ηODN(%)=0.89×SRT-5.74。　　　　　ERP-SBR　X703.1　　　A　　　1008-9241(2006)-07-0020-05Influencingfactorsofbiologicalnitrogenremovalinthedypassphosphorus-removalERP-SBRJiFangying　XiaoTieyan　LuoGuyuan(KeyLaboratoryofThreeGorgesReservoirRegion′sEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing400045)Abstract　Ininfluentofthedypassphosphorus-removalERP-SBR,whenCODis338～527mg/L,TNis40～60mg/LandTPis8～11mg/L,perfecttreatmentwillbereached:COD≤39mg/L,NH3-N≤1.8mg/L,TN≤5.8mg/L,TP≤0.29mg/L,and72percentsoftotalnitrogenwillberemovedataerobicphase.Inthispa-per,theinfluencingfactorsofbiologicalnitrogenremovalarestudied.Theexperimentsshowthatdissolvedoxygenistheimportantinfluencingfactorofaerobicbiologicalnitrogenremovalandanoxicdenitrificationusingendogen-esiscarbon.Highconcentrationofactivedsludge,biggranuleandthicknessofsludgemakeforaerobicbiologi-calnitrogenremova.lLongsludgeretentiontimeisinfavorofimprovingaerobicnitrogenremova.lTheperfectlinearitybetweensludgeretentiontimeandnitrogenremovalrateisfounded:ηODN(%)=0.89×SRT-5.74.Keywords　biologicalnitrogenremoval;dypassphosphorus-removal;aerobicbiologicalnitrogenremoval;wastewatertreatment;ERP-SBR:(50278101);“”(2003BA808A15-2-1):2005-06-02;:2005-12-10:(1964～),,,,,。E-mail:[e-mail]　　、,,NH3→NO-2→NO-3→NO-2→N2,。[1～4],SBR[5](externalrecycleprocessofaerobicsludgeinSBRsystem,ERP-SBR),TN=40～60mg/L、BOD5/TN5、BOD5/TP25,ERP-SBRTP≤0.29mg/L、≤5.8mg/L,72%。,、、ERP-SBR。7:ERP-SBR1　1.1　ERP-SBRERP-SBR1,3:SBR、。SBR、,18L,0.61,12h,:()3.0h→4.0h→2.0h→0.5h→、、2.5h。SBR、,、。SBR,1/16,SBR,,。,SRT60d,,MLSS5g/L,0.08～0.13kgCOD/kgMLSSd,0.16kgMLSS/gCOD。1　ERP-SBRFig.1　Flowschematicdiagramofdypassphosphorus-removalERP-SBRsystem1.2　,:COD338～527mg/L,TN40～60mg/L,NH3-N35～52mg/L,TP8～11mg/L,pH7～8,25～30℃。CODHACH-COD,《》(3)。2　2.1　ERP-SBRERP-SBR23,,NH3-N、TNTP98.6%、92.9%98.5%,NH3-N≤1.8mg/L,TN≤5.8mg/L、TP≤0.29mg/L,《》(GB18918-2002)A。,[6]。2　、Fig.2　VariationofPconcentrationininfluenteffluentvs.timeinERP-SBRsystem3　、Fig.3　VariationofNH3-NandTNconcentrationininfluenteffluentvs.timeinERP-SBRsystem2.2　ERP-SBR4。4:(1)30min,。(2)NH3-N,,2.0hNH3-N2174　ERP-SBRFig.4　RemovalprocessofNforonecycleinERP-SBRsystem24.3mg/L1mg/L,26.2mg/L11.8mg/L,。(3),NH3-NNO-2NO-3,NH3-N5mg/L,NO-2NO-3,,NO-2、NO-3,NO-2。(4),NO-3、NO-2TN,。　　,ERP-SBR93%,72.4%,。3　3.1　COD5SBRCOD,COD,30min55%,60min67%,,74%COD。,COD,,PHB,,,。6,,,,PHB,。5　ERP-SBRCODFig.5　RemovalprocessofCODforonecycleinERP-SBRsystem3.2　DO6SBRDO、。,DO,。6　DOFig.6　InfluenceoftimedistributingofDOonNremovaleffect(1)1,DO1mg/L,DO,DO,(12.3mg/L),。227:ERP-SBR(2)3,DO,NH3-N、NO3-NNO2-N。,,(7.5mg/L),。(3)2,DO,60minDO≤0.7mg/L,100minDO≤1.0mg/L。,NH3-N、TN,,。,SBRDO,,:0～90minDO≤1mg/L,1.5h,0.5h,62DO。3.3　SRTSRT,,SRT。4SBR(8、20、3060d),78。7　SRTTNFig.7　VariationofTNineffluentvs.timefordifferentSRTreactors78,SRT,,NH3-N;SRT,,,NO3-N。IAWQ,(1):SRT,,8　SRTFig.8　CompositionofNineffluentfordifferentSRTreactors;SRT,,,()。1,ηODN(%)SRT(d),SRT8d,ERP-SBR。ηODN(%)=0.89×SRT-5.74　(R2=0.995)1　Table1　ProportionofseparateNremovaltototalremovalduringdifferentreactingstages(d)8203060(%)39.871.283.090.7(gMLSS/gCOD)0.2750.2480.2380.190︵%︶292312711123475323424*65343122　　*,C5H7NO2[7]3.4　ERP-SBRSRT,。MLSSSRT,、PHB,(9)。9ERP-SBR,,ERP-SBR,、/,-237。　　9　(10×10)Fig.9　ComparisonofflocculentsludgebetweenERP-SBRandtraditionalsystem(opticalmicroscope10×10times)4　　(1)ERP-SBR、、,。、,SRT:ηODN=0.89×SRT-5.74。(2)SBR,DO。,1.5h。(3)COD=386～527mg/L、TN=40～60mg/L、TP=8～11mg/LERP-SBR,《》(GB18918-2002)A。[1]CollivignarelliC.,etal.Simultaneousnitrification-denitrifi-cationprocessesinactivatedsludgeplantsperformanceandapplicability.Wa.tSc.iTech.,1999,40(4～5):187～194[2]RobertsonL.A.,DalsgaardT.ConfirmationofaerobicdenitrificationinbatchculturesusinggaschromatographyandNmassspectrometry.FEMSMicrobio.lEco.l,1995,18:113～120[3],,,..,2000,26(4):17～20[4]XiaodiHao,JosephJ.Heijnen,MarkC.M.vanLoosdrech.tSenitivityanalysisofabiofilmmodeldescribingaone-stagecompletelyautotrophicnitrogenremoval(CANON)process.BiotechnologyandBioengineering,2002,77(3):266～277[5].ERP-SBR.,2004[6],,,.SBR.,2002,18(5):1～5[7]HenzeM.,HarrenmoesP.,JansenJ.L.C.,eta.lWastewaterTreatment/BiologicalandChemicalProcesses.2ndEdition.NewYork:Springer,199724