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UASB714000UASBpHVFANH3－N。UASBCODStudyontheStart－upofUASBandtheSolutionsabouttheCommonProblemsduringtheProcessBAIXiao－jiMINFengLIUYun－fengLIXiao－zheDUWeiWANGXiao－weiYAOYong－pingWeinanHigh－TechNewElectronicChemicalsCo.Ltd.ShaanxiWeinan714000ChinaAbstractThequalificationsofstart－upandtheparameterscontrolsuchastemperaturepHnutrientsVFAal-kalinityandammonianitrogenNH3－NandsoonwerestudiedaswellastheissuesattendedandthesolutionsfrompracticalpointsofviewandtheoriesduringtheUASBstart－upinthewastewatertreatment.KeywordsUASBstart－upCODacidification11.1UASB1letfinga20701。气室沼气沉淀区出水污泥悬浮层污泥层反应区进水三相分离器1UASB。UASB。1.2UASB、、、。C6H12O6n→CH4+CO2+H2S+NH3。。UASB2－3。2UASB2.1UASB。UASB25℃33℃～41℃550C。UASB。3℃。3℃。55℃1～2VFA·381·20103824。2.2pHpHpH6.8～7.2pH、、、5。2.32。C∶N∶P=85∶5∶1CCODCOD∶N∶P=300∶5∶1。。。。100～150g·L－16。2.42.4.1CODpH。有机负荷/（mg/L）COD去除率/%2CODcrCODcr2。2CODcrCODcrUASB60CODcr4400mg/L5200mg/LCODcr55%6663%CODcr30%～60%1000～1500mg/L。2.4.2。。。UASB0.5m/h。2.5VFAVFAVFAVFAVFA。ρ（VFA）/（mg/L）pH值3CODcr3VFA200mg/LVFA800mg/L“”。pH7.0～7.2pH。pH。VFApHpHVFAVFApHpHVFA。pH7.15pH7.0～7.1VFA400mg/L。2.6NH3－NNH+4/NH3H2CO3/HCO－3HCO－3/CO2－3H2S/HS－HS－/S2－HAC/Ac－。=HS－+HCO－3+2CO2－3+NH3+Ac－2000～5000mg/L1000mg/LpHpH。NH3－N1000mg/L4。UASB2100mg/LNH3－N180～300mg/L7。312。、、。207·481·20103821.J.2009416－18.2.J.20081635.3.《》J.200711210.4.《》J.20092625－27.5.《》J.200842檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵6－7.18444.1pHPHPARpHVFANaOHpH。pH。。4.2UASB。、。123。8。。。1234。5UASBUASBUASB。25℃～35℃2100mg/LUASBpH。1.M.1995222－225.2HickeyRFWuWMVeigaMCetal.Start－upoperationmoni-tioringandcontrolofhigh－rateanaerobictreatmentsystemsJ.WatSciTechnol1991248207－225.3LettingaGHulshoffeolL.W.UASB－processdesignforvarioustypesofwastewatersJ.WatSciTechnolm199124887－107.4VanlierJBetal.tempraturesusceptibilityofthemophilicmethanogenicsludgeImplicationsforreactorstartupandoperationJ.Biores.Technol199343227.5MacarieHGuyotJP.Useofferroussulphatetoreducstheredoxpoten-tialandallowthestartupofUASBreactorstreatingslowlybiodegradablecompounsapplicationtoawastewatecontaining4methylbenzonnicacid.EnvironJ.TECHNOL1995161185.6DriessnWJBM.HabetsLHAetal.NewdevelopmentsinthedesignofUpflowAnaerobicSludgeBedreactorsC.2rdSpecial－izedIAWQconferenceonPretreatmentofIndustrialWastewaters1996.7.M.1998.8.UASBM.2000170－188.·702·2010382