A2OBAF工艺处理低CN值生活污水的快速启动王建华

A2O-BAFC/N王建华,　陈永志,　彭永臻(北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124)　　　:　以低碳氮比的实际生活污水为处理对象,重点研究了A2O-BAF工艺的快速启动。结果表明,先单独对硝化型曝气生物滤池进行挂膜后再将A2O与BAF连接起来可成功启动该双污泥系统。采用快速排泥挂膜法和自然挂膜法相结合的复合挂膜法,使用不含有机物的配水对曝气生物滤池进行挂膜,18d后曝气生物滤池挂膜成功。系统连续运行44d后达到稳定。使用碳氮比为3.21的生活污水进行驯化,反硝化除磷菌占聚磷菌的比例为66.7%,缺氧吸磷为系统的主要除磷方式,此时出水氨氮、正磷酸盐浓度均接近于零,出水硝态氮为15.1mg/L左右,对COD、氨氮、总磷和总氮的去除率分别为82%、100%、100%和67%。表明该双污泥系统运行效果稳定,启动成功。　　:　A2O-BAF工艺;　硝化型曝气生物滤池;　反硝化除磷;　快速启动:X703　　:A　　:1000-4602(2010)15-0032-05　　:(PXM2008014204050843);　(2008ZX07317-007-005、2008ZX07209-003);　“”(QAK200802)FastStart-upofA2O/BAFSystemforTreatmentofLowC/NRatioDomesticSewageWANGJian-hua,　CHENYong-zhi,　PENGYong-zhen(KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)　　Abstract:　Thefaststart-upofA2O/BAFsystemwasinvestigatedusingdomesticsewagewithlowcarbon-nitrogenratio.Thetwo-sludgesystemcanbesuccessfullystartedupbyformingbiofilmfirstinni-trifyingBAFandthenconnectingA2OwithBAF.Thestart-upofBAFissuccessfullyachievedbycombi-ningnaturalbiofilmformationmethodwithquicksludgedischargebiofilmformationmethodandusingtheinfluentwithoutorganicmattersafter18d.Thesystemreachesastablestateaftercontinuousoperationof44d.Duringthedomesticationusingthedomesticsewagewithacarbon-nitrogenratioof3.21,denitrif-yingphosphorusremovingbacteriaare66.7%ofphosphorusaccumulatingorganisms,andanoxicphos-phorusuptakeisthemainwayforphosphorusremoval.Theammonianitrogenandorthophosphatecon-centrationsintheeffluentareclosetozero,thenitratenitrogenconcentrationisabout15.1mg/L,andtheremovalratesofCOD,ammonianitrogen,totalphosphorusandtotalnitrogenare82%,100%,100%and67%respectively,whichshowsthatthetwo-sludgesystemoperatesstablyandisstartedupsuccessfully.·32·第26卷　第15期2010年8月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.26No.15Aug.2010　　Keywords:　A2O/BAFsystem;　nitrifyingbiologicalaeratedfilter;　denitrifyingphosphorusre-moval;　faststart-up　　C/N。、,C/N,,。A2O,、、、,[1]。A2O,A2O-BAF,(BAF),,、、A2O。BAFA2O。:①,;②A2O,;③,;④A2O,BAF,BAF;⑤A2O,,,[2]。A2OBAF,,A2O,BAF,BAF。,BAF,,A2OBAF,()。A2O-BAF,。1　材料与方法1.1　A2O-BAF1,、A2O、、、。A2O9,30.5L,2,3,4,、2∶3∶4。A2O5.4L/h,HRT5.6h,MLSS2500mg/L,SRT9d,200%,100%。A2OA2O,21L。BAF15L,HRT30min。、、,。,。1　A2O-BAFFig.1　FlowchartofA2O/BAFprocess1.2　,1。BAF,pH7.5,NH+4-N50mg/L,TP10mg/L。1　Tab.1　CharacteristicsofrawwastewaterCOD/(mg·L-1)TN/(mg·L-1)PO3-4-P/(mg·L-1)C/NC/P144.2～25453.6～69.73.34～9.57207.864.85.43.2138.51.3　COD:COD;NH+4-N:;NO-2-N:N-(1-)-;NO-3-N:;TP:—;MLSS:;、pHDO:WTWinolablevel2。,A2O·33·王建华,等:A2O-BAF工艺处理低C/N值生活污水的快速启动第26卷　第15期(DPAOs)(PAOs)。2L,32L,(COD=200mg/L)2h,COD、TP。2,DO2h,NO-3-N2h,DPAOsPAOs[3]。1.4　BAF。,2h,8h。2,3d。3d1/2,。,A2OBAF。2　结果与讨论2.1　BAF2。2　BAF、NH+4-NFig.2　NH+4-NconcentrationininfluentandeffluentofBAFanditsremovalefficiencyduringstart-up,,,BAF。1NH+4-N13.2%,100%。,BAF,,(847.2%)。NH+4-N,100%,BAF。2.2　A2O-BAFBAF,,COD、、、3。3　A2O-BAFFig.3　RemovalefficienciesofpollutantsduringcontinuousrunperiodofA2O/BAF3,COD82%;,100%。A2O,,,,,,PHB,,。,9～10d,,,,,,。,,100%;,,BAF;,67%。Wang[4],C/N7.1TN,C/N3.21,。,。,COD·34·第26卷　第15期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。4COD、、、(1#～12#、1、2、1、2、3、1、2、3、4、)。4　Fig.4　ChangeofpollutantsduringacycleafterstableoperationCOD209.3mg/L,VFAPHB,COD66.8%,30.4mg/L,。,COD,,PHB、,[5]。,,。BAF,。2.3　A2O()5。,。C/N,。,17.69mgP/(gMLSS·h),11.82mgP/(gMLSS·h),0.668,66.8%。A2O-BAF,,。5　、Fig.5　Effectsofanaerobicphosphorusreleaseandanoxicandaerobicphosphorusuptake,BAF,A2OBAF,A2O,BAF。A2O-BAF18dBAF44d。3　结论①　,,18d。,A2OBAF,44d,,。②　3.21,100%,DPAOsPAOs66.7%,。,A2O,BAF,A2O。③　A2O-BAF,,COD、、、82%、100%、67%、100%。(15.1mg/L)。A2O,,。:[1]　DingYL,WangL,WangBZ,etal.Removalofnitrogen(下转第40页)·35·王建华,等:A2O-BAF工艺处理低C/N值生活污水的快速启动第26卷　第15期;2#,COD250mg/L,2#100%,1.1～1.2,,80%,73%COD,、。,,200～300mg/LCOD,,。,,、、,。3　结论①　COD2#,COD250mg/L,100%,1.1～1.2,,80%,73%COD,、。②　1#,,,,。③　COD400mg/L,,60%～76%。:[1]　OHSE,KimKS,ChoiHC,etal.Kineticsandphysio-logicalcharacteristicsofautotrophicdenitrificationbyde-nitrifyingsulfurbacteria[J].WaterSciTechnol,2000,42(3-4):59-68.[2]　CamposJL,CarvalhoS,PortelaR,etal.Kineticsofdenitrificationusingsulphurcompounds:EffectofS/Nratio,endogenousandexogenouscompounds[J].Biore-sourTechnol,2008,99(5):1293-1299.[3]　GommersPJF,KuenenJG.Simultaneoussulfideandacetateoxidationinadenitrifyingfluidizedbedreactor—Ⅰ.Start-upandreactorperformance[J].WaterRes,1988,22(9):1075-1083.[4]　Reyes-AvilaJ,Razo-FloresE,GomezJ.Simultaneousbi-ologicalremovalofnitrogen,carbonandsulfurbydenitri-fication[J].WaterRes,2004,38(14-15):3313-3321.[5]　,,.N/S[J].,2010,26(7):1-4.[6]　.(4)[M].:,2001.[7]　KrishnakumarB,ManilalVB.Bacterialoxidationofsul-phideunderdenitrifyingconditions[J].BiotechnolLett,1999,21(15):437-440.:(1973-　),　,　,　,　。:[phone]　13991946772E-mail:[e-mail]:2010-04-15(上接第35页)andphosphorusinacombinedA2/O-BAFsystemwithashortaerobicSRT[J].JEnvironSci,2006,18(6):1082-1087.[2]　LeeJ,ChoiI,WiesmennU.Testofporousceramicmate-rialfortheimmobilisationofpredominanlynitrifyingbac-teriaandfortheimprovementoftheAAOprocess[J