A2O2工艺处理氮肥废水短程硝化动力学研究高健磊

C/N1～2。C/N[1-3]A2/O2C/NA2/O2。11.11.1.1A2/O2A2/O214、、HRT5、6、22.5、9h。TN。。DO0.5mg·L-1[4-5]。。1.1.2A2/O2。288%。1.1.324t·a-140t·a-110t·a-1DMF15t·a-1。pH1A2/O2Fig.1FlowchartofA2/O2process
    A2/O2450002A2/O2---MLSSMLVSSSVI、ORP。A2/O2X703.1X786A1000-3770(2011)[e-mail]3712201112TECHNOLOGYOFWATERTREATMENTVol.37No.12Dec.,201190DOI:10.16796/j.cnki.1000-3770.2011.12.0227.0～8.5COD100～200mg·L-160～120mg·L-126～30℃。1.22。20cm100cm30L。1.330L30min、23～4h。32h2h。1h131。DO0.5mg·L-1Na2CO3pH7.5～8.03000～3500mg·L-1。1.4、NO2--N、NO3--N、TN、COD[6]DOHI9146-04pHORPHI8424/MLSSSVI。22.1。33。3368.9、62.5、61.8mg·L-189.5、86.7、85.1mg·L-13.26、2.88、3mg·L-195%。[8]。30HRT22.5hHRT9h。2.2SVISVI3SVI4。SVI78～134mL·g-1。SVI106mL·g-1SVISVI106mL·g-1SVI。DO3Fig.3Variationsofammoniaconcentrationwithtime0510152025303540020406080100
(
)/mgLh4SVIFig.4TheinfluenceofSVIonammoniaremovalrate7080901001101201301402.02.53.03.54.04.55.05.56.0
/mgLhSVImLg2Fig.2Experimentalequipmentforkineticresearch
 A2/O291SVI[9]。SVIDOSVI106mL·g-1。2.3ORPORPDO、pH[10]。DO0.5mg·L-1ORP5。ORP。ORPy=-49.712x+101.90.97546。A2/O2ORP。2.4。Monod[11]v=-dSdt=S1-S2Δt=vm·S2kS+S2ΔtS1-S2=kSvm·1S2+1vmvmkSvS1、S2ΔtΔt=1h。ΔtS1-S21S27y=2.0709x+0.21kSvm2.07091vm0.21vm=4.762mg·L-1·h-1kS=9.86mg·L-1。v=4.762S9.86+Svm12.88mg·L-1·h-1[12]2DOA2/O2。3C/N。A2/O295%HRT。SVI6ORPFig.6AnalysisoftherelationbetweenORPandammoniaconcentration0.40.60.81.01.21.41.61.82.001020304050607080
ORP/mVlg
7Fig.7Analysisforkineticparametersofnitrification0.000.050.100.150.200.250.00.10.20.30.40.50.60.70.8
t/
S/hLmgSLmg5ORPFig.5VariationsofammoniaconcentrationandORPwithtime0510152025300102030405060708090100
(
)/mgLh01020304050607080ORP/mv371292TREATMENTOFBLACKWATERWITHMODIFIEDUASBREACTORZhaoBingliang,YuanLinjiang,ZhangNa,ChaiLu(SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitecture&Technology,Xi'an710055,China)Abstract:ModifiedmothodofUASB(externalcirculationanaerobicreactor)wasusedfortheblackwatertreatmentat35℃.TheresultsindicatedthatusingmodifiedUASBreactortreatingBlackwatercanaccelaratethereactorstart,andpromotegranulationofsludgeflocs.Settingsludgeloadingrate(SLR)at0.15～0.36kg·kg-1·d-1andtheupflowvelocityat1.15～1.27m·h-1,theremovalefficiencyofCODandSSwerehigherthan73%and78%,respectively.WhentheHydraulicretentiontime(HRT)was10h,theaverageremovalefficiencyoffecalcoliformswas87.4%.Keywords:externallycircular-UASBreactor;backwater;granularsludge;fecalcoliforms。SVI106。ORPORPy=-49.712x+101.9A2/O2。v=4.762S9.86+S60～120mg·L-1。[1]GRuiz,DJeison,ORubilar,etal.Nitrification-denitrifcationvianitriteaccumulationfornitrogenremovalfromwastewaters[J].BioresourceTechnology,2006,97:330-335.[2]RuizG,JeisonD,etal.Nitrificationwithhighnitriteaccumulationforthetreatmentofwastewaterwithhighammoniaconcentration[J].WatRes.,2003,37:1371-1377.[3]KuailP,VersraeteW.Ammoniumremovalbytheoxygen~limitedautotrophicnitrification-denitrificationsystem[J].ApplEnvTech.,1999,39(7):13-21.[4]BernetN,PengDC,DelgenesJP,etal.Nitrificationatlowoxygenconcentrationinbiofilmreator[J].JournalofEnvironmentandEngineering,2001,127(3):266-271.[5]HanakiK,WaantawinC,OhgakiS.NitrificationatlowlevelsofDOwithandwithoutorganicloadinginasuspended-growthreactor[J].WatRes.,1990,24(3):297-302.[6].[M].4.:,2006.[7],,.[M].:,2005.[8],.SBR[J].,2004,27(4):111-113.[9],.[J].,2010,31(10):2385-2389.[10]MikeSMJetten,MarcStrous,KatinkaT,etal.Theanaerobicoxidationofammonium[J].FEMSMicrobiologyReviews,1999,22:421-437.[11]CPLeslieGradyJr,GlenTDaigger,HenryCLim.[M].2.,2004.[12].[D].:,2006.RESEARCHONTHEDYNAMICSOFSHORTCUTNITRIFICATIONINTHEA2/O2PROCESSOFNITRICFERTILIZERWASTEWATERDISPOSALGaoJianlei,ZhangXiaojing,LiuHanghang（CollegeofWaterConservancyandEnvironmentalEngineering,ZhengzhouUniversity,Zhengzhou450002,China）Abstract:TheA2/O2(Anoxic-anaerobic-microaerobic-aerobic)processwasusedtotreatnitricfertilizerwastewaterinapilot-plant.Afterachievedstableaccumulationofnitritenitrogenbycontrollingtheoperatingconditions,anintermittentexperimentwasconductedtoinvestigatethekineticcharacteristicsoftheshortcutnitrificationprocessaboutthesludgederivedfromthemicro-oxygenationpoolwhichwasrichinnitrosobacteria.Inthispaper,thedegradationcharacteristicsofammoniaandtherelationbetweenMLSSandMLVSSwereevaluatedfirstly,andthentheinfluenceofSVIandORPonammoniaremovalratewasanalysed,finallyadynamicsequationoftheshortcutnitrificationprocesswasestablished.Keywords：A2/O2process;shortcutnitrification;dynamics8922222222222222222222222222222222222222222222222222222222222222A2/O293