HRT对AO型序批式MBR处理印染废水的影响李靖梅

HRTA/OMBR李靖梅1,李秀芬1,堵国成2(1.江南大学环境生物技术研究室,江苏无锡,214122;2.江南大学工业生物技术教育部重点实验室,江苏无锡,214122)　:A/OMBR(),MBRHRT()、。,HRT,A/OMBR,COD95%;HRT,HRT24h(96.4%);(SVI)50～70mL/gMLSS,;HRT。,A/OMBRHRT24h。:染整;废水处理;膜生物反应器:TS199　　　:A　　　:1000-4017(2009)16-0013-04InfluencesofHRTondyeingeffluentstreatmentwithA/OtypesequencingbatchMBRLIJing-mei1,LIXiu-fen1,DUGuo-cheng21.LabofEnvironmentalBiotechnology,JiangnanUniversity,Wuxi214122,China;2.KeyLabofIndustrialBiotechnology,MinistryofEducation,JiangnanUniversity,Wuxi214122,ChinaAbstract:A/O-typesequencingbatchmembranebioreactor(MBR)wasusedtotreatdyeingeffluents.InfluencesofHRTonpollutantremovaleffect,sludgepropertiesandmembranefluxwereanalyzed.Resultsshowedthat,underdifferentHRT,ef-fluentstreatedwithA/O-typesequencingbatchMBRweregoodandstable,andtotalremovalsofCODandchromaweremorethan95%;ammonianitrogenremovalraterosefirstandfelllaterasHRTincreased,anditsmaximumreached96.4%whenHRTwas24h.SVIofsludgewasintherangeof50～70mL/gSSanditssettlingabilitywasgood.Membranefluxin-creasedwiththeextensionofHRT.Overall,thebestHRTwouldbe24h.Keywords:dyeingandfinishing;wastewatertreatment;membranebioreactor0　前言(MembraneBioreactor,MBR),。/+,COD。,,,,。(HydraulicRetentionTime,HRT),,,。HRT,,;HRT,,。,HRT:2009-06-03:(50678073);(BS2007125):(1985-),,,。:,E-mail:[e-mail]。。A/OMBR,MBR(A),,MBRHRT、,。1　试验方法1.1　1　A/OMBR1-;2-;3-A;4-;5-MBRO;6-;7-;8-;9-1,A,,MBR(O),。A13　HRT对A/O型序批式MBR处理印染废水的影响　(2009No.16)40L,。O60L,(,2m2,0.2μm,)。MBR。1.2　+。B-2GLN(,);[1];、、、、。1。1　AACOD/(mg/L)1130.4～1147.1630.0～669.8/(mg/L)20.9～35.614.2～24.41270～1335110～212pH7～8-1.3　A———;O———。1.4　AHRT16h,,8h,20L,(DO)0.3mg/L。OMBR0.15m3/h,,DO4.25mg/L,,HRT10,12,24,3648h,。1.5　(MixedLiquorSuspendedSludge,MLSS)、(MixedLiquorVolatileSuspendedSludge,MLVSS)(SludgeVolumeIndex,SVI)[2]。,[3]。-[4],。Lowry[5],。(ExtracellularPolymericSub-stance,EPS)[6]:5mL7mL,4000r/min5min,,5mL,12000r/min20min,0.22μm,EPS。EPS[7]:,5mL,80℃30min,12000r/min20min,0.22μm,EPS。EPS。2　结果与分析2.1　HRT2HRT。2　HRTO2,HRT12h,COD。,,。HRT12～48h,COD,HRT12h,HRTCOD。(4.8g/L),;,[8]。HRT,COD。HRT。HRT24h,,96.4%;HRT(24h),,,,,COD,;,HRT,、,,。HRT(24h),,,,。,OMBRHRT24h,。2.2　HRT2.2.1　SVI值,SVI50～200mL/gMLSS[9]。HRT,。3SVIHRT14　(2009No.16)　。3　HRTOSVI3,HRTSVI,50～70mL/gMLSS,SVI。SVI,,,,。2.2.2　MLVSS/MLSS值4MBROMLVSS/MLSSHRT。4　HRTMBRMLVSS/MLSS4,OMLVSS/MLSS,0.4。,HRT,SVI。MLVSS/MLSSO,EPS。2.2.3　相对疏水性,。5MBROHRT。5,OHRT。,EPS/(PN/PS),0.969。PN/PS,PN/PS[10]。5,OHRT5　HRTMBR,EPSPN/PS。EPS,EPS,EPS[11],EPS,,。O,,。2.3　HRTEPS6HRTMBRO、EPS。6,EPS,EPS。HRT,O,(a)(b)15　HRT对A/O型序批式MBR处理印染废水的影响　(2009No.16)(c)EPS6　HRTEPS1.76～3.81mg/gMLVSS。HRT10,1224h,;36h,27.42mg/gMLVSS31.19mg/gMLVSS,;HRT48h,。HRT36h,,/(PN/PS),O(5)。HRTEPS,,,,HRTEPS。2.4　HRT7HRT。7　HRT7,HRT48h,,5.76L/(m2·h);HRT10～36h,。HidekeHarada,HRT,[12]。VisvanathanC,MBRHRT,[13]。,HRT,,。3　结论A/OMBR,HRT,COD,COD95%。HRT,HRT24h96.4%。MBRSVI50～70mL/gMLSS,。HRT。,A/OMBRHRT24h。:[1]　,,　,.[J].(),2007,23(3):493-495.[2]　.[M].3.:,1989,362-368.[3]　JinB,WilénBM.Acomprehensiveinsightintofloccharacteristicsandtheirimpactoncompressibilityandsettleabilityofactivatedstudg[J].ChemicalEngineeringJournal,2003,95:221-234.[4]　DuboisM,GillesKA.Colorimetricmethodfordeterminationofsugarsandrelatedsubstance[J].AnalystChem.,1956,28:350-356.[5]　FrolundB,GriebeT,NielsenP.Enzymaticactivityintheactivatedsludgeflocmatrix[J].AppliedMicrobiologyandBiotechnology,1995,43(4):755-761.[6]　JinB,WilénBM.Acomprehensiveinsightintofloccharacteristicsandtheirimpactoncompressibilityandsettleabilityofactivatedsludge[J].ChemicalEngineeringJournal,2003,95:221-234.[7]　MurthySN,NovakJT.Effectsofpotassiumiononsludgesettling,de-wateringandeffluentproperties[J].WaterScienceandTechnology,1998,37(425):317-324.[8]　,.[J].,1999,18(2):83-84.[9]　　,,.[J].,2003,13(7):79-82.[10]　,,,.[J].,2007,28(4):795-799.[11]　DiganceMF,UrbainV,RybackiD,etal.Chemicaldescriptionofextracellularpolymers:implicationonactivatedsludgeflocstructure[J].WaterScienceandTechnology,1998,38(6):45-53.[12]　HidekeHarada.Applicationofanaerobic-UFmembranereactorfortreatmentofawastewatercontaininghighstrengthparticulateorgan-ics[J].WaterScienceandTechnology,1996,30(12):307-319.[13]　VisvanathanC,YangBS,MuttamaraS,etal.Applicationofairbackflushingtechniqueinmembranebioreactor[J].WaterScienceandTechnology,1997,36(12):259-266.合理使用资源造福子孙后代··16　(2009No.16)