固定化硝化菌去除废水中氨氮工艺的研究赵兴利

20119991　　　　　　ENVIRONMENTALSCIENCEVol.20,No.1Jan.,1999*赵兴利　兰淑澄(,　100037E-mail:[e-mail])　(PVA)-,PVA,,A/O,.,SBR.:7;10.3mg/(L·h),420mg/(L·h);NH4-N240mg/(L·h);4%,NH4-N35mg/L65mg/L,5h9h,NH4-N99%;COD230mg/L,NH4-N35mg/L,4h,COD86%,NH4-N90%..　,,,,,.*　(ProjectSupportedbyNa-tionalNaturalScienceFoundationofchina):59378343:,30,:1998-05-23StudyonTheProcessofRemovingNitrogenfromWastewaterUsingImmobilizedNitrobacteria*ZhaoXingli　LanShucheng(BeijingMunicipalResearchAcademyofEnvironmentalProtection,Beijing100037E-mail:[e-mail])Abstract　Theimmobilizedmicrobespelletsweremadefromentrappingcultivatednitrifyingactivatedsludgeusingpolyvinylalcohol(PVA)crosslinkedwithboricacid,PVAisentrapmentcarrierandpowderedactivatedcarbonisinorganiccarrier.ThesourceofnitrifyingactivatedsludgecomefromA/Osystem.Inbiologicalfluidizedbedreactor(BFBR),SequencingBatchReactors(SBR)systemtreatingcomposedNH4-Nwastewaterwascarriedout.Theexperimentresultswereasfollows:theimmobilizednitrobacteria'slifewasmorethansevenmonths;theoxygenusingrate(OUR)recoveredfrom10.3mg/(L·h)to420mg/(L·h);theNH4-Nre-movalloadingcouldreach240mg/(L·h).Whiletheimmobilizednitrobacteriapelletspackagepercentagewas4%,influentNH4-Nconcentrationwas35mg/L,reactiontimewas5h,theNH4-Nremovalefficiencyreach99%;influentNH4-Nconcentrationwasabout65mg/L,reactiontimewas9h,theNH4-Nremovalefficiencyalsoreach99%.WhentheinfluentCODisabout230mg/L,NH4-Nisabout35mg/L,reactiontimewas4h,theCODremovalefficiencycouldreach80%,theNH4-Nremovalefficiencyalwayskept90%orso.Inthisresearch,thesituationofmicrobegrowthanddistributionofimmobilizednitrobacteriawasobservedwithscanningelectronmicroscope.Keywords　immobilization,nitrobacteria,wastewatertreatment,removalofnitrogen,FluidizedBedReactor(FBR),SequencingBatchReactors(SBR).　　.,NH4-NDOI:10.13227/j.hjkx.1999.01.01090%.PVA,1.78L,NH4-N2kg/(m3·d).,,,[1].、,、.1　1.1　(polyvinylAlcohol,PVA)-,PVA,,A/O,3mm、3mm,[2].1.2　,、.VenkatasubramanianKarkare,[3].,1.1　NH4-N2　2.1　,,1,(SequencingBatchReactor,SBR).7L.,300%.,1g/cm3,,,.,,.(1)　,PVA,,,.1,2,PVA,,,,,.,,,1.1PVA,,,,.1,PVA,,,,,.,,,.(2)　,3mm3mm3mm,,,,,,.(3)　PVA40　　　　　　20,,1,PVA,,1.16g/cm31.05g/cm3.(4)　,,,,,.,.(5)　,.,,1,8.0cm/s5.4cm/s.2.2　(1)(Rrp)　2,Rrp,420mg/(L·h),Rrp,.,7.2　Rrp(2)RrpNH4-N　,NH4-N.3,NH4-NRrp,NH4-N240mg/(L·h).[4],100—150mg/(L·h).3　RrpNH4-N　　(3)　.:①PVA,,,.②PVA,,,,,.③,.2.3　CODCr(mg/L),NH4-N(mg/L).(1)　SBR,,7%,4%.NH4-N30—35mg/L,5h,、、、3h.NH4-N99%,Rrp.NH4-N65mg/L,9h,、、、3h,NH4-N99%,Rrp.(2)　,NH4-N,4h,4%,COD240mg/L,NH4-N35mg/L,4.411　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　4　CODNH4-N　　4,,COD,12d86.1%,NH4-N.,,,,.,,:①,0.022h-1,0.08～0.3h-1;②BOD5[5].,,..,.,,,,,,.3　(1),,,,.(2),.Rrp10.3mg/(L·h)420mg/(L·h),7,NH4-N240mg/(L·h).(3)NH4-N,99%,.(4)PVA,,,,.PVA,,,,.1　,..,1997,18(1):83—852　,..,1997,18(2):18—203　[]L·S·,..:,1993.2464　.によるりんシステム.,1994,31(368):85　..:,1992.2142　　　　　　20