Based+on+MBR+Microbial+Community+Structure+Analysis+of+shortcut+nitrification+initiation+in+differen

ORIGINALARTICLEProbe-EnvironmentalScienceandTechnologyVolume1Issue1|2019|1BasedonMBRMicrobialCommunityStructureAnalysisofshortcutnitrificationinitiationindifferentkindsofmudHuangDianxia,LiZimingNationalandlocaljointEngineeringLaboratoryAbstract:Forclearmembranebioreactor(MBR)MicrobialCommunitystructurechangesbeforeandaftertheshort-cutNitrificationwithdifferentsludgeinoculation.MBRNitrifyingsludge(R1.),Anaerobicnitrificationsludge(R2.)And1.:1.MixedinoculationofanaerobicandDenitrifyingsludge(R3.)Sludgesourceforachievingrapidshort-cutnitrification.TheresultsshowthatthecombinationofIntermittentAerationandreducedhydraulicretentiontime(HRT),R1.R2.WithR3.Reactortime-consuming46d,8dAnd30dTheshortcutnitrificationwassuccessfullylaunched,R2.ShorteststartupcycleofReactor.Duringthestableoperationperiod,R1.R2.AndR3.Theaveragenitriteaccumulationratewas92%,93%And94%,R3.Thereactorshowedmorestableshort-cutNitrificationperformance..Ace,Chao,ShannonAndSimpsonIndexresultsshowthatafterstableoperation,R1.AndR2.Themicrobialabundanceanddiversityofthereactorweresignificantlylowerthanthatoftheinoculatedsludge,R3.Theabundanceofreactorspeciesdecreasedslightlywhilethediversitylevelchangedlittle..Aftertheshortcutnitrificationwassuccessfullystarted,3.ThemainbacteriainthereactorwereProteusphyla(Proteobacteria)Andbacteriocin(Bacteroidetes)AndtheabundanceoftheMainNitrogenRemovalFunctionbacteriaishigherthanthatoftheinoculatedsludge..Beta-Proteus3.Thedominantbacteriaintheshort-cutNitrificationsystemofeachreactoraccounted59.6%,63.6%And69.3%.R1.R2.AndR3.Reactorintheadvantagebacteriaofarenitrosationsingle(Nitrosomonas)Ofproportionrespectivelyup12.8%,Natural20.2%And19.7%.ComparedR1Reactor,R2AndR3Reactorinoculationsludgeinthereisacertainproportionofnitrificationbacteriamoreconducivetosystemshort-rangenitrificationofimplementation.Keywords:short-rangenitrification;MembraneBiologicalReactor;inoculationsludge;start;microbialcommunitystructureManyscholarsforthisofthedifficultproblemsofalargenumberofresearchresu