涤纶碱减量废水中对苯二甲酸的好氧生物降解性能研究杨期勇

77Vol.7,No.720067TechniquesandEquipmentforEnvironmentalPollutionControlJul.2006杨期勇(,332005)　　　陈季华　孙选举　奚旦立(,200051)　　,(TA)(EG),EGTA。,TA、EG,EGTA。,EGTA,TA1100mg/L,27.5mgCOD/gMLSSh,EG1200mg/L,36.7mgCOD/gMLSSh。,TATA,TA。EGTA,TA。　　　　　X703　　　A　　　1008-9241(2006)-07-0038-05Studyonaerobicbiodegradabilityofterephthalicacidinpolyesterfabricalkali-peelingprocesswastewaterYangQiyong1　ChenJihua2　SunXuanju2　XiDanli2(1.SchoolofChemistryandChemicalEngineering,JiujiangUniversity,Jiujiang332005;2.SchoolofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai200051)Abstract　Theaerobicbiodegradabilityofterephthalicacid(TA)andethyleneglycol(EG),especiallytheeffectoftheaddedEGonthebiodegradabilityofTA,werestudiedinthelabconditionwithmixedculturefromactivatedsludgeofWWTP.TherewasalagperiodintheaerobicbiodegradationofTAandEGassolecar-bonsource,andthelagperiodofbiodegradationforEGwaslongerthanforTA.Afterthelagperiod,theremov-alrateofEGwas36.7mgCOD/gMLSShataconcentrationof1200mg/L,whileTAwas27.5mgCOD/gMLSShat1100mg/L.TheconcentrationofTAhadaslightnegativeinfluenceonthelagperiodofbiodegrada-tionofEGatthesamesludgeloadingrate.AlthoughEGdidnotinhibittheaerobicprimarybiodegradationofTA,itinhibitedtheaerobicultimatebiodegradationofTA.Keywords　aerobicbiodegradation;terephthalicacid;ethyleneglycol;alkali-peelingprocesswastewater:(02DZ12096):2005-06-24;:2006-04-06:(1972～),,,,。E-mail:[e-mail]　　,(TA)、(EG)、(N,N-、),TACOD63%～71%,。,TA,TA。,、TA,TA、4-1,3,5-[1～5],Michaelis-Menton[6,7]。,EGCOD20%～24%,。,TA,EG。EGTA,。,TA,EGTA,7:。　　　1　1.1　(,),1d,100mL1000mL,(150r/min)1d,(600r/min)10min,,(pH7.2),10min,,2～3,2000mg()/L,。1.2　(mg/L):(NH4)2SO42500,Na2HPO412H2O3600,K2HPO41400,MgSO47H2O2500,CaCl22H2O16.0,FeSO47H2O2.0。1.3　(FM/)TA500mL5,1#～5#,10mLTA(10mg/mL)、100mL,10、20、35、70150mL,FM/(F:CODmg/L,M:MLSSmg/L):7.2、3.6、2.0、1.00.5,250mL。1.4　TA500mL6,①#～⑥#,5、10、12.5、15、17.522.5mLTA(10mg/mL),FM/=4.0,。150mL,250mL。1.5　TAEG1000mL2,55mLTA(10mg/mL)600mgEG,FM/=3.0,。300mL,500mL。1.6　TAEG1000mL5,Ⅰ#～Ⅴ#,200mgTA、200mgTA+30mgEG、200mgTA+60mgEG、200mgTA+120mgEG、200mgTA+180mgEG,FM/=3.0,。300mL,500mL。1.7　　2,(150r/min,30℃),12h(20mL),COD、TA,。,600nmA,。1.8　COD:;MLSS:;(TA):,242mm,TU-1900;:,GC-2010,:(1)1L,pH2～3,12h;(2)(),;(3)、,()();(4)KD2mL,。2　2.1　(FM/)TA,(FM/:BOD5)1.0,BOD590%70%,[8]。(FM/:COD)TA1。,FM/,TA。F/M=0.5,;FM/=7.2,36h,TA;48h,,TA。,,FM/,FM/。FM/TA1,FM/=0.5、1.0,36h,FM/=2.0,48h,FM/=3.6、7.2,60h。,72h,TA90%。3971　TAFig.1　EffectofsludgeloadingrateonaerobicbiodegradationofTA1　FM/TATable1　BiodegradationvelocityofTAundervarioussludgeloadingrates(mgCOD/h)FM/(h)1224364860720.57.7510.5212.8510.78.837.561.04.956.812.2610.938.877.542.00.681.475.6210.048.547.223.60.290.891.774.638.577.327.200.271.151.928.187.112.2　TA,TA。,FM/=4.0。2,TA,,TA,,48hTACOD。60h72h,TA(95%),20%～30%COD,,TA,。,TA,,TA,TA。,,,TA,TA。2.3　TAEGTAEGCOD70%20%,。,TAEG,。2　TA(FM/=4.0)Fig.2　Timecourseprofilesofsubstratebiodegradation(FM/=4.0)　　TA(1100mg/L)EG(1200mg/L)(FM/=3.0),3。,,TAEG,COD;,COD。TA38h,74h,TA,97.3%,COD57.7%,COD,134h,COD87.3%。EG62h,110h,COD77.8%,COD,134h,COD85.2%。407:3　、CODFig.3　Timecourseprofilesofgrowthofmicrobes,removalrateofCODandbiodegradationrateofTA,TA、EG,EGTA,。,EGTA,TA87.3%(COD)96h,27.5mgCOD/gMLSSh;EG85.2%(COD)72h,36.7mgCOD/gMLSSh。2.4　EGTAEGTA,TAEG,FM/=3.0(TA-COD),EGTA,4。,TAEGTA,38h,TA,62hTA。EG()TA,EGTA,TA。TAEGCOD。62h,TACODTA,COD,,EGCOD12h(62h74h),COD,74h,COD。4　EGTAFig.4　EffectofaddedEGonbiodegradationofTA　　EGEGEGTA,,TA(36～38h),,,。TA,,EGTA,。5,EG,(),EG,。EGTA,EGTA。,TA4175　EGFig.5　EffectofaddedEGongrowthofmicrobes(3,4-)、4-1,3,5-,CO2、。EG,EG[9]。EGTATA,EGTA,EG,TA。,,EG,EGTA,TA;TA,EGTA。3　　(1)FM/,TA。,FM/,FM/。(2),,TA,TA。　　(3)EGTA。,EGTA。(4)EGTA,TA。[1]RibbonsD.W.,EvansW.C.Oxidativemetabolismofphthalicacidbysoilpseudomonads.JournalofBiochemis-try,1960,6:310～318[2]EngelhardtG.,WallnoferP.R.,RastH.G.,eta.lMe-tabolismofO-phthalicacidbydifferentgram-negativeandgram-positivesoilbacteria.ArchMicrobiology,1976,109:109～114[3]AftringR.P.,ChalkerB.E.,TaylorB.F.Degradationofphthalicacidsbydenitrifying,mixedculturesofbacteri-a.AppliedofEnvironmentalMicrobiology,1981,41(5):1177～1183[4]KeyserP.,PujarB.G.,EatonR.W.,eta.lBiodegra-dationofthephthalatesandtheirestersbybacteria.Envi-ronmentHealthPerspective,1976,18:159～166[5],,.(TA).,1992,13(3):18～25[6]..,1983,28(22):1374～1377[7]ChidambaraRajC.B.,RamkumarN.Biodegradationofacetic,benzoic,isophthalic,toluicandterephthalicacidsusingamixedculture:EffluentsofPTAproduction.ProcessSafetyandEnvironmentalProtection:TransactionsoftheInstitutionofChemicalEngineers.PartB,1997,75(4):245～256[8],.,(2).:,1999.178～179[9]WaggyG.T.,ConwayR.A.,HansenJ.L.,eta.lCom-parisonof20-dBODandOECDclosed-bottlebiodegrada-tiontests.Environ.Toxico.lChem.,1994,13:1277～128042