您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 其它行业文档 > EGSB反应器中厌氧颗粒污泥的脱氮特性研究
,.EGSB[J].,2005,25(2):208-213KANGJing,WANGJianlong.ThecharacteristicsofanaerobicammoniumoxidationbygranularsludgefromEGSBreactor[J].ActaScientiaeCircumstantiae,2005,25(2):208-213EGSB,3,100084:,(EGSB),3,,,.EGSB,,EGSB,.,TN4515%1314%9919%;TN5413%2117%9919%.NH+42N,3117mgL-1h-1(N).,EGSB.:;;;;;EGSB;.:025322468(2005)0220208206:X703:AThecharacteristicsofanaerobicammoniumoxidationbygranularsludgefromEGSBreactorKANGJing,WANGJianlongLaboratoryofEnvironmentalTechnology,INET,TsinghuaUniversity,Beijing100084Abstract:Anexpandedgranularsludgebed(EGSB)reactorwasstarted2upbyseedingtheanaerobicsludgefrombrewerywastewatertreatmentplant.Afterthreemonthsoperation,thegranularsludgeoccurredinthereactor,andtheammoniumnitrogencouldberemovedcontinuously.Themorphologyandinnerstructureofthegranuleswasobservedusingscanningelectronmicroscopy(SEM)andthephotographsindicatedthattheanaerobicgranularsludgewasrelativelyregularinshape.Theouterlayerhadaratherfluffyandloosestructureandwasmoretransparentcomparedtothecenterofthegranule.Thecenterofthegranulehaddensestructure.Thelong2termoperationalresultsshowedthatthemaximalremovalefficiencyofNH+42Nwas40%wheninfluentNH+42Nconcentrationwas70250mgL-1;theNO-22Nremovalefficiencywasmorethan98%wheninfluentNO-22Nconcentrationwas70250mgL-1;andtheCODremovalefficiencywas84%attheinfluentconcentrationof500mgL-1.Thisrevealedthatthereactionofanaerobicammoniumoxidation(ANAMMOX)probablytakenplaceintheEGSBreactor.InordertovalidatetheexistenceofANAMMOXreactionandinvestigatetheperformanceofnitrogenremovalbyanaerobicgranularsludge,thegran2ularsludgetakenfromEGSBreactorandtheactivatedsludgetakenfrompartial2nitrificationreactorwasusedtotreatthesyntheticwastewater.Theexperimentalre2sultsdemonstratedthatfortheactivatedsludge,theremovalefficiencyoftotalnitrogen(TN),NH+42NandNO-22Nwas4515%,1314%and9919%,respective2ly;fortheanaerobicgranularsludge,theywere5413%,2117%and9919%,respectively.TheremovalrateofNH+42Nwasstable,about3117mg(Lh)-1.Atthebeginningofthereaction,theANAMMOXprocesswasperformedmainlythroughthepathwayofinteractionbetweenNH+42NandNO-22N,astimewenton,withtheexhaustionofNO-22N,thegranularsludgecoulduseNO-32NaselectronacceptortooxidizeNH+42N,yieldingdinitrogengas.Inthisresearch,theCODremovalefficiencywasabout9014%.InthelightofestimationofCODconsumption,theanaerobicgranularsludgecoulduseorganiccarbonsourceaselectrondo2nor,reduceNO-22NandNO-32N,tocarryoutthetraditionaldenitrification.Theresultsobtainedinthisstudycouldrevealthatintheanaerobicgranularsludgere2actortheANAMMOXreactiontakenplace,accordingly,theexistenceofanaerobicammoniumoxidationphenomenonintheEGSBreactorcouldbededuced.Keywords:ANAMMOX;nitrogenremoval;wastewatertreatment;nitrification;denitrification;EGSB;granularsludge:2004208219;:2004208230:(:59978020):(1979),,;3,wangjl@tsinghua.edu.cn,.,,2[1,2].(ANaerobicAMMoniumOXidation,ANAMMOX),2090DelftKluyver[3].,25220052ACTASCIENTIAECIRCUMSTANTIAEVol.25,No.2Feb.,2005.,[3],:(1),N2O,N2O;(2),,NO;NON2O,N2ON2;(3)NH+4,N2H2N2.Mulder,,[4]:5NH+4+3NO-34N2+9H2O+2H+G0=-297kJmol-1(1),[5].vandeGraaf,[6]:NH+4+NO-2N2+2H2OG0=-358kJmol-1(2)1,1NO-2,1NH+4.(NH2OH)(N2H4)ANAMMOX,NH2OH,NH2OHHNO2,1.1Fig.1ThepathwayofNtransferduringanammoxprocess[721].,,pH[7].2,[22],.EGSB,,2,COD,,EGSB.1111EGSB,2.37,..EGSB70mm,600mm,213L;140mm,160mm,2146L;416L.2EGSB(11;21;31;41;51;61;71;81;91;101;111;121)Fig.2EGSBreactorconfigurationforanaerobicammoniumoxidation112,(NH4)2CO3NaNO2CaCl2MgSO4(EDTAFeSO4)(EDTAZnSO47H2OCoCl26H2OMnCl24H2OCuSO45H2ONa2MoO42H2ONiCl26H2ONa2SeO410H2OH3BO3).,HRT1120d.1132500mL,EGSB,250mL,500mLEGSB9022:EGSB,100mgL-1,COD650mgL-1.,37,.N223min,,.,.2min,18G(12mm)1015mL,810h.114[23].:;:N2(12)2;:;COD:.2,(EGSB),3,EGSB,.,(SEM),3SEM.24.,2NO-22N5.,,,NO-22N.2COD6.NO-32N7.,NO-32N1214mgL-1216mgL-1,9911%2413%.33,,(3A),.,.,(3B3C),3SEMFig.3ScanningelectronmicrographsofanaerobicgranularsludgecultivatedinEGSBreactor012254NH+42NFig.4TimecourseofNH+42Nremoval6CODFig.6TimecourseofCODremoval5NO-22NFig.5TimecourseofNO-22Nremoval7NO-32NFig.7TimecourseofNO-32Nremoval(3D).,NO-22N70250mgL-1,98%;COD500mgL-1,84%;NH+42N70250mgL-1,40%,230mgL-1(N).EGSB.4,3d,NH+42N2117%,NH+42N1313%.NH+42N.2h,NO-22N,NH+42N;NO-22N,NH+42N.NO-22N,NH+42N.EGSB,NH+42NNO-22N,NO-22N,NO-22N.,.,NO-22N.,,;,,.45:NO-22N,,.,3016mgL-1NO-22N,5718mgL-1NO-22N.2h,NH+42NNO-22N,.NH+42NNO-22N.NH+42NNO-22N.,.6,20h,COD,,,COD,1122:EGSB.,.COD9116%,COD8116%.COD.46,,NH+42NCOD,NH+42N.,NH+42N,COD.,.NH+42NCOD,.,COD,,COD.45,,NH+42N10mgL-1415mgL-1,NO-22N16mgL-1017mgL-1.5,10h,NO-22N.4,10h,NH+42N.VandeGraaf[6],NH+4NO-31016,NH+4NO-211.Strous,,5mmolL-1NH+4NO-3[9]:NH+4+1132NO-2+01066HCO-3+0113H+1102N2+0126NO-3+01066CH2O0105N0115+2103H2O(3),.,.7,.,(1).,NH+42NNO22NNO-32N121630141.NH+42NNO-22N12163,Strous(3),COD,.(3),,.47,TN5218mg,4515%.914mg,1314%.4316mg,9919%.vandeGraaf[10],,,,,.,,.47,TN6517mg,5413%,NH+42N15218mg,2117%,NO-22N4412mg,99198%.,NH+42N,312mgL-1h-1.,NH+42NNO-22N;,NO-22N,NH+42NNO-32N,NO-32NNH+42N.COD30715mg,9014%.COD,,,.Strous[15],,COD54307514mgL-1,75100mgL-1,15%20%.vandeGraaf[12]215LANAMMOX.36,pH7,HRT42h.,NH+42NNO
本文标题:EGSB反应器中厌氧颗粒污泥的脱氮特性研究
链接地址:https://www.777doc.com/doc-6536339 .html