MBR厌氧缺氧交替工艺处理生活污水的试验研究

363Vol.36No.320075JournalofChinaUniversityofMining&TechnologyMay2007:20060704:(00313);(200457);(OP4476):(19762),,,,,.E2mail:[e-mail]:13776781854:100021964(2007)0320347204MBR2/张传义1,张雁秋1,袁丽梅2,高彦林1,王强1,奚旦立2(1.,221116;2.,201620):提出一种提高生活污水脱氮除磷的交替式厌氧/缺氧2膜生物反应器(A2A/A2M)工艺.该工艺由一个交替缺氧/厌氧反应池和内置膜过滤单元的好氧池组成.通过改变好氧池底部回流污泥流向使缺氧和厌氧环境在两个独立反应器(A和B)内依次形成,以实现同步缺氧反硝化脱氮厌氧释磷及反硝化聚磷菌的部分吸磷等过程.好氧反应器采用连续曝气方式实现硝化过量吸磷及膜污染的控制.结果表明:A2A/A2M工艺可以实现污染物的高效去除,对COD,TN,TP的平均去除率分别达到93%,67.4%和94.1%.:脱氮除磷;A2A/A2M工艺;反硝化聚磷菌(DPB);生活污水:X703.1:AResearchonDomesticWastewaterTreatmentinanInnovativeMBRProcessZHANGChuan2yi1,ZHANGYan2qiu1,YUANLi2mei2,GAOYan2lin1,WANGQiang1,XIDan2li2(1.SchoolofEnvironmentandSpatialInformatics,ChinaUniversityofMining&Technology,Xuzhou,Jiangsu221116,China;2.SchoolofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai201620,China)Abstract:Aninnovativealternatingofanoxicandanaerobicmembranebioreactor(A2A/A2M)processwasdevelopedtoenhancenitrogenandphosphorusremoval.Theprocesswascom2posedofacontinuousaeratedMBRandanalternatinganaerobicandanoxiczonecontainingtwoseparatedbioreactors(ReactorAandB).Byswitchingonandoffthecontrolvalves,themixedliquorwasrecycledfromtheaerobiczonetoreactorAorBalternately,thus,theanoxiccondi2tionsfordenitrification,anaerobicconditionsforphosphorusreleaseanduptakeofphosphorusbyphosphate2accumulatingbacteria(DPB)wereachievedintwosingletanksalternately.Theaerobiczone(ReactorC),inwhichahollowfiberMFmembranemodulewasimmersed,wascontinuouslyaeratedforthepurposeofnitrificationandphosphorousuptakeaswellasfoulingcontrol.Alaboratory2scaleexperimentwasappliedtoinvestigatetheperformanceoftheA2A/A2Mprocess.TheresultsshowthattheA2A/A2Mprocesscanachievehighperformanceonnutrientremoval.Undertheoperationalconditionsimposed,theremovalefficienciesofCOD,totalnitrogenandtotalphosphoruscanreachat93%,67.4%and94.1%,respectively.Keywords:nitrogenandphosphorsremoval;A2A/A2Mprocess;denitrifyingphosphate2accu2mulatingbacteria(DPB);domesticwastewater36,,(membranebioreac2tor,MBR)[124].MBRMBRA/O2MBR./,[526].A/O2MBR/,,[7].MBR,.,AhnKHChoJ[829]/MBR(sequencinganoxic/anaerobicMBR,SAM),,,A/O2MBR.22(A2A/A2M),.2(MBR),,,.,,(J=10L/(m2#h))(10B2).11.11.A2A/A2M2(AB)(C).1A2A/A2MFig.1SchematicdiagramoftheA2A/A2MsystemA,BC24,2448L.(PVDF,0.22Lm)C,,15L/min.(/=13/2),10L/h().5500~6500mg/L,.1.21.2.1,NaAC,NH4Cl,KH2PO4Mg,CaFe.:Q(COD)300mg/L,Q(TN)30mg/L,Q(TP)6mg/L,pH7.3.,2.1.2.212.AB.AB.A,1,2,A,,B.1h,1,2,B,A,,B.1h,(R)2.1.2.3A2A/A2M,,.(MLSS);(DO)pH(WTWOxi340,Germany)pH(PHSJ24A,China);COD(TN)(NO-3)(TP)(PO3-4)[10].22.12.,A2A/A2MCOD,COD93%,COD21mg/L.COD:2;;,[11].3483:MBR2/2Fig.2EffectofnutrientremovalbyA2A/A2Mproces2,TN67.4%,TN10.2mg/L.NH4Cl,,A2A/A2M,.,TN.,.A,A,.,,,TN.,,.,A2A/A2M.A2A/A2M(2).0.35mg/L,TP94.1%..2.2A2A/A2M2,.A,15minA,B.(120min)2DO,NO-3PO3-43,4.3DOFig.3ProfilesofDOinatypicalcycle4A2A/A2MPO3-4NO-3Fig.4ProfilesofPO3-4andNO-3inatypicalcycleofA2A/A2MoperationDO.3,0~60min,A,A,(Q(DO)0.5mg/L);,B,(Q(DO)0.2mg/L).60~120min,B,A,(t30min);B,DO.DOA,B,,2222,A2/O.(0~60min),22.A,A.4,0~60min,A(3mg/L),,A,,,A,A0~60min.,,B.,,,.15min,B,.,.15min,B,,,60min21.18mg/L.3493660~120min,22.B,,B,A.,(DPB)2B2(PHB),.,15min(60~75min),ADPB.75min,ADPB,,,,,25.75mg/L.,,,A..,AB4.57mg/L,AB,,AB.A,B,.A,.,B,,BA/,(A).31)/2(A2A/A2M),,,,COD,TNTP93%,67.4%94.1%.2)A2A/A2M,A,B,,(),.3)DOA,B,.:[1]LESJEANB,GNIRSSR,ADAMC.Processconfig2urationsadaptedtomembranebioreactorsforen2hancedbiologicalphosphorusandnitrogenremoval[J].Desalination,2002(149):2172224.[2]BAETH,HANSS,TAKTM.Membranesequen2cingbatchreactorsystemforthetreatmentofdairyindustrywastewater[J].ProcessBiochemistry,2003(39):2212231.[3]KUBINK,KRAUMEM,DORAUW.Investigationofnitrogenremovalinacascadedmembranebioreac2tor[J].WaterScienceandTechnology,2002,46(425):2412247.[4],,,.[J].,2005,23(2):2492253.ZHANGHan2min,XIAOJing2ni,CHENGYing2jun,etal.Comparingexperimentsonenhancingni2trogenandphosphorusremovalinmembranebioreac2tor[J].ActaScientiaeCircumstintiae,2005,23(2):2492253.[5]UEDAT,HATAK,KIKUOKAY.Treatmentofdomesticsewagefromruralsettlementsbyamem2branebioreactor[J].WaterScienceandTechnology,1996(34):1892196.[6]YEOMIC,NAHYM,AhnKH.Treatmentofhouseholdwastewaterusinganintermittentlyaeratedmembranebioreactor[J].Desalination,1999(124):1932204.[7]COTEP,BUISSONH,POUNDC,etal.Immersedmembraneactivatedsludgeforthereuseofmunicipalwastewater[J].Desalination,1997(113):1892196.[8]AHNKH,SONGKG,CHOE,etal.Enhancedbiologicalphosphorusandnitrogenremovalusingasequencinganoxic/anaerobicmembranebioreactor(SAM)process[J].Desalination,2003(157):3452352.[9]CHOJ,SONGKG,LEESH,etal.Sequencinganoxic/anaerobicmembranebioreactor(SAM)pilotplantforadvancedwastewatertreatment[J].Desali2nation,2005(178):2192225.[10].[M].:,1989.[11]STEPHENSONT,JUDDS,BRINDLEK.Mem2branebioreactorsforwastewatertreatment[M].London:IWAPublishing,2000.()350