短程硝化颗粒污泥的快速培养与硝化特性研究刘国洋

*111112131．1001242．2501013．1000222minSBＲ。6020d120d。856.56μm。SBＲ80%。。120min。DOI10.7617/j.issn.1000－8942.2013.05.020STUDYONTHEＲAPIDCULTIVATIONOFSHOＲT-ＲANGENITＲIFYINGGＲANULAＲSLUDGEANDTHENITＲIFICATIONCHAＲACTEＲISTICSLiuGuoyang1LiJun1ZhaoBaihang1WangChangwen1WangYonglei12LiuWeiyan131．TheKeyLaboratoryofBeijingforWaterQualityScience＆WaterEnvironmentＲecoveryEngineeringBeijingUniversityofTechnologyBeijing100124China2．CollegeofMunicipalandEnvironmentalEngineeringShandongJianzhuUniversityJinan250101China3．BeijingDrainageGroupCo．LtdBeijing100022ChinaAbstractTakingthewastesludgegainedfrommunicipalwastewatertreatmentplantsasseedsludgeaerobicgranularsludgewasrapidlyculturedinasequencingbatchreactorthroughtheselectionpressureformedby2minsettlingtime．Granularsludgeinshapeofsandappreaedinthe60thcircle20dandwasoperatedfor120d．Theformedgranularsludgehasanaveragediameterof856.85μmwhichhasagoodnitrificationperformance．AsteadypartialnitrificationwasachievedinthesequencingbatchreactorthatoperatedinanfixedaerationtimethenitriteaccumulationrateNO－2-N/NO－x-Nwasover80%．Theresultofbatchtestindicatedthatthenitrificationprocessesofflocssludgeandgranularsludgeweresimilarbuthadadiffierence．Thedifferencewasthatacontinuous120minaerationaftertheendofammoniaoxidationtheflocssludgewouldconvertnitritetonitratecompletelyhowevertheprocedureofgranularwasveryslowandonlyasmallpartofnitritewasconverted．Keywordssequencingbatchreactoraerobicgranularsludgeshort-rangenitrification*510780088122005KM201210005028004000546612010。0、、、1-2。。3。、、、4。、582013103155-8。。AOBNOB9。。。。11.1SBＲSBＲ50cm23.5cm21L10cm。1L/h。25～28℃。SBＲ35min7.5h2min5min15min。60%。1.2ρCOD400mg/LρNH+4-N80mg/L1。MLSS4030mg/LSVI89mL/g。1Table1CompositionsofartificialwastewaterNaAc0.512g/LH3BO3150mg/LNH4Cl0.307g/LCuSO4·5H2O50mg/LKH2PO40.040g/LKI150mg/LMgSO4·7H2O0.020g/LMnCl2·4H2O110mg/LCaCl2·2H2O0.010g/LCoCl2·6H2O150mg/L0.5mL/LNa2MoO4·2H2O60mg/LFeCl3·6H2O1500mg/LZnSO4·7H2O120mg/L1.3COD、NH+4-N、NO－3-N、NO－2-N、MLSS。BX41。Mastersizer2000。25%15hPBS350%、70%、80%、90%100%10～15min。37℃1500nm。HitachiS-4700Japan。30min3。0.5g/LNaHCO325℃。22.12.1.1106.56μm1a。2min。10。101b。20480.74μm。。。801c856.56μmSVI45mL/g。。6440mg/LSVI21mL/g。1e1f。。5000。682013103151Fig．1Opticalmicrographsofactivatedsludgeindifferentstages。。EPS、。2.1.215min2d1SV、MLSS、MLVSS2。1～615min。7～153min。16d2min。。20。57SVI80～90mL/g。SVI。57dSVI。MLVSS/MLSS0.760.40。。。2、311-12。LeiSBＲVS/TS0.880.5313。2Fig．2Sludgecharacteristicsvariationduringtheculture2.1.3。ρCOD400mg/L25～40mg/L94%。ρNH+4-N80mg/LNH+4-N3。NH+4-N2mg/L。2minMLSS。47MLSS1020mg/LρNH+4-N17.38mg/L。MLSSNH+4-N。66MLSS3000mg/LNH+4-N2mg/L。NH+4-N0.5mg/LNH+4-N100%。NH+4-NNO－2-N782013103153Fig．3Nitrificationcharacteristicsvariationduringtheculture。SBＲNH+4-NNO－2N14。nitriteaccumulationrateNAＲ1。NAＲ=ρNO－2-NρNO－2-N+ρNO－3-N×100%1MLSSNO－2-N83%。NOBAOB15AOB。2min8019dNAＲ95%16。NAＲNAＲ80%。。。2.22.2.15d4。。NO－2-NNH+4-N。DO2.0mg/LNO－3-NCO2pH。NH+4-NNO－2-N172pHNH+4-N“”18。NH4+-NDO。NH4++1.5O2→NO2－+2H++H2O24Fig．4Nitrificationcharacteristicsofflocssludge120NH+4-NNO－2-N14.27mg/L36.91%。NO－2-NNO－3-N3pH。3AOBNH+4-NNO－2-NNO－3-NDO。NO－2-NDO。NO－2+0.5O2→NO3－3pHDO。pHpHNO－2-N19。882013103152.2.2110。5。。AOBDODO5.5mg/LNO－3-NNO－2-NNO－3-N。pHpHDODO。DO。pH“”DO90。5Fig．5Nitrificationcharacteristicsofgranularsludge120NH+4-NρNO－2-NρNO－3-N35.2410.48mg/LNO－2-N77.08%2.09。120minDONO－2-NNO－3-N。240ρNO－2-NρNO－3-N31.4313.70mg/LNO－2-N69.6%pHDO。AOB。。“”。AOB。20。。。3SBＲ856.56μm。NO－2-N80%。120minNO－2-NNO－3-N。。。1ChungJBaeWLeeYWetal．Shortcutbiologicalnitrogenremovalinhybridbiofilm/suspendedgrowthreactorsJ．ProcessBiochem200742320-328．2PengYZChenYPengCYetal．NitriteaccumulationbyaerationcontrolledinsequencingbatchreactorstreatingdomesticwastewaterJ．WaterSciTechnol20045035-43．3SunilSALeeDuujongShowKuanyeowetal．AerobicgranularsludgeＲecentadvancesJ．BiotechnologyAdvances200826411-423．4LeeDuuJongChenYuYouShowKuanYeowetal．AdvancesinaerobicgranuleformationandgranulestabilityinthecourseofstorageandreactoroperationJ．BiotechnologyAdvances201028919-934．5SchwarzenbechNErleyrMCSwainBSetal．TreatmentofmaltingwastewaterinagranularsludgesequencingbatchreactorSBＲJ．ActaHydrochimicaetHydrobiologica200432116-24．6XuHTayJHFooSKetal．ＲemovalofdissolvedcopperCuandzincZnbyaerobicgranularsludgeJ．WaterScienceTechnology2004509155-160．982013103157TayJHJiangHLTaySTL．HighratebiodegradationofphenolbyaerobicallygrownmicrobialgranulesJ．JournalofEnvironmentalEngineering2004130121415-1423．8LiuYongQiangKongYunhuaTayJooHwaetal．Enhancementofstart-upofpilot-scalegranularSBＲfedwithrealwastewaterJ．SeparationandPuricationTechnology201182190-196．9KimJChenMKishidaNetal．Integratedreal-timecontrolstrategyfornitrogenremovalinswinewastewaterusingsequencingbatchreactorsJ．WaterＲes2004383340-3348．10LiuYWangZWQinLetal．SelectionpressuredrivenaerobicgranulationinasequencingbatchreactorJ．ApplMicrobiolBiotechnol20056726-32．11SchmidtJEAhringBK．GranularsludgeformationinupflowanaerobicsludgeblanketUASBreactorsJ．BiotechnolBioeng1996493229-246．12ＲoseＲK．TheroleofcalciuminoralstreptococcalaggregationandtheimplicationsforbiofilmformationandrentationJ．BiochimBiophysActa2