低基质浓度下UASB厌氧氨氧化的脱氮性能及颗粒污泥特性王俊敏

　62　10　　　　　　　　　　　　Vol.62　No.10　201110　　CIESC　Journal　　　October　2011UASB王俊敏1,王淑莹1,霍明昕2,张树军3,马　斌4,甘一萍3,杨　武2,彭永臻1,4(1,100124;2,130024;3,100022;4,150090):(up-flowanaerobicsludgeblanket,UASB),,(NH+4-N16.6mg·L-1,NO-2-N19.8mg·L-1),(anaerobicammoniumoxidation,ANAMMOX)。:ANAMMOX。NH+4-NNO-2-N93.3%94.6%;UASB(hydraulicretentiontime,HRT)1.26h0.14h,5.73kgN·m-3·d-1;,0.5～0.9mm,0.73mm。:;ANAMMOX;UASB;DOI:10.3969/j.issn.0438-1157.2011.10.033:X703　　　　　　　:A:0438-1157(2011)10-2914-06CharacteristicsofgranularsludgeandnitrogenremovalperformanceinANAMMOX-UASBreactorfedwithlowstrengthsubstrateWANGJunmin1,WANGShuying1,HUOMingxin2,ZHANGShujun3,MABin4,GANYiping3,YANGWu2,PENGYongzhen1,4(1KeyLaboratoryofBeijingWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2SchoolofUrbanandEnvironmentalScience,NortheastNormalUniversity,Changchun130024,Jilin,China;3BeijingDrainageGroupCo.Ltd.,Beijing100022,China;4SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,Heilongjiang,China)Abstract:Theperformanceofanaerobicammoniumoxidation(ANAMMOX)wasinvestigatedbyincreasinginfluentflowratestepwiseinup-flowanaerobicsludgeblanket(UASB)reactor,withlowstrengthsubstrate(19.8mgNO-2-N·L-1and16.6mgNH+4-N·L-1).TheresultsshowedthathighvolumetricnitrogenremovalratecouldbeachievedandgranularsludgecouldbeformedinUASBreactorfedwithlowstrengthsubstrate.TheaverageremovalefficienciesofNH+4-NandNO-2-Nwere93.3%and94.6%,respectively.Thehydraulicretentiontime(HRT)wasprogressivelyshortenedfrom1.26hto0.14h,　　2010-12-03,2011-07-12。:。:(1983—),,。:(50978003);“”(QAK201006)。　　　Receiveddate:2010-12-03.Correspondingauthor:Prof.WANGShuying,[e-mail]　Foundationitem:supportedbytheNationalNaturalScienceFoundationofChina(50978003)andtheStateKeyLaboratoryofUrbanWaterResourceandEnvironment(HIT)(QAK201006).　andwhenHRTwas0.14h,thevolumetricnitrogenremovalratewas5.73kgN·m-3·d-1.TheANAMMOXgranuleswererufousincolorandthemajority(81.81%)ofgranuleswasintherangeof0.5—0.9mmwiththeaverageof0.73mm.Keywords:lowstrengthsubstrate;ANAMMOX;UASBreactor;granularsludge　,。,NH+4-NNO-3-N,;NO-3-NN2,,C/N[1]。,CO2。,,CH4。,,。(anaerobicammoniumoxidation,ANAMMOX)[2-3]。,ANAMMOXCO2,NO-2,NH+4N2[4]。AN-AMMOX,,、[5-6]。ANAMMOX(35℃10～12d),,[5]。ANAMMOX()[7],:[8](+ANA-MMOX),NH+4-N45.9mg·L-1TN88.4%,ANAMMOX-UASB0.40kgN·m-3·d-1;GhentVer-straete[9]25℃OLAND,NH+4-N6629mg·L-1,(hydraulicretentiontime,HRT)2.0h1.0h,0.440.38kgN·m-3·d-1。ANAMMOX。[10-11],ANAMMOX。ANAMMOX,UASB,ANAMMOX。1　1.1　,NH4ClNaNO2。1。1　ANAMMOXTable1　InfluentcharacteristicsofANAMMOXreactor/mg·L-1NH+4-NNO-2-NNO-3-NCOD16.6±2.119.8±2.412.2±2.247.1±8.31.2　(up-flowanae-robicsludgeblanket,UASB)(1),8L,8cm,,ANA-MMOX。(30±1)℃。1.3　,UASB,NH+4-NNO-2-N125mg·L-1131mg·L-1,1.15kgN·m-3·d-1。DNAANAMMOXCandidatusKueneniastuttgartiensis。·2915·　10　　:UASB1　Fig.1　SchematicdrawingofANAMMOX-UASBreactor　,。(mixedliquorsuspendedsolids,MLSS)9.8g·L-1。1.4　,(1),。,NH+4-NNO-2-N:NH+4-NNO-2-N1mg·L-1,,。1.5　NH+4-N:;NO-2-N:N-(1-)-;NO-3-N:;TN:-[12];COD:5B-3C;pHDO:WTWpH/Oxi340i;MLSS:;:[13]。2　NH+4-NNO-2-NFig.2　Profilesofinfluent,effluentconcentrationsandremovalefficienciesofNH+4-NandNO-2-N　2　2.1　ANAMMOXNH+4-N(16.6±2.1)mg·L-1,NO-2-N(19.8±2.4)mg·L-1,NH+4-NNO-2-N(2)。2,40d,NO-2-N1mg·L-1。40d70d,NO-2-N,NH+4-N,0.5mg·L-1。,HRT,。HRT1.26h0.14h,0.57kgN·m-3·d-15.73kgN·m-3·d-1(3),(2),AN-AMMOX。,ANAMMOXNH+4-NNO-2-N2　ANAMMOXTable2　OverviewofnitrogenremovalperformanceofANAMMOXreactorfedwithlowstrengthsubstrateReactorSludgetypeη(NH+4-N)/%η(NO-2-N)/%NRR/kgN·m-3·d-1Ref.SBRgranule94.597.4LR(NH+4-N)=0.0114LR(NO-2-N)=0.0111[14]biofilterbiofilm80—100——[15]UFBbiofilm——4.68[16]UASBgranule93.394.65.73thisstudy　　Note:UFBwasabbreviationofup-flowANAMMOXfixed-bedreactor;—,notavailable;η(NH+4-N),ammoniumremovalefficiency;η(NO-2-N),nitriteremovalefficiency;NRR,nitrogenremovalrate;LR(NH+4-N),ammoniumloadingrate;LR(NO-2-N),nitriteloadingrate.·2916·　　　　　62　93.3%94.6%(2),(2)。ANAMMOX4,ΔNO-2-N/ΔNH+4-N1.21±0.11,ΔNO-3-N/ΔNH+4-N0.25±0.06(ΔNO-2-N、ΔNH+4-NNO-2-N、NH+4-N,ΔNO-3-NNO-3-N)。,ΔNO-3-N/ΔNH+4-N[17][(1)]0.26,ΔNO-2-N/ΔNH+4-N[17][(1)]1.31。[14]SBR1∶1.02∶0.17[15]ANAMMOX1∶(1～1.5)∶(0.17～0.27),ΔNH+4-N∶ΔNO-2-N∶ΔNO-3-N,ANAM-MOX。NH+4+1.31NO-2+0.066HCO-3+0.13H+1.02N2+0.26NO-3+0.066CH2O0.5N0.15+2.03H2O(1)2.2　ANAMMOX2.2.1　进水NO-2-N/NH+4-N对运行性能的影响　4,47dΔNO-2-N/ΔNH+4-N1.31,47～70dΔNO-2-N/ΔNH+4-N。47d,NO-2-N/NH+4-N1.11,2,NO-2-N1mg·L-1,Monod,NO-2-N0,ANAM-MOX0,NH+4-N。47～70d,NO-2-N/NH+4-N1.39,2NH+4-N,NO-2-N。[18]:NH+4-N10～25mg·L-1,NO-2-N/NH+4-N=1.24,NH+4-N;NO-2-N/NH+4-N=1.60,NO-2-N;NO-2-N/NH+4-N=1.34,NO-2-NNH+4-N。,NO-2-N/NH+4-N,ΔNO-2-N/ΔNH+4-N1.21±0.11,NO-2-N/NH+4-N1.21。NO-2-N“”,NO-2-N,。NO-2-N/NH+4-N=1.11,NO-2-N0,NH+4-N(2),NO-2-N/NH+4-N=1.11。2.2.2　DO对运行性能的影响　Strous[6]ANAMMOX,,ANAMMOX,ANAMMOX。ANAMMOX10d42d,,(100L),(dissolvedox-ygen,DO)。DOANAMMOX,·2917·　10　　:UASB:12d0.96kgN·m-3·d-1(3),9d0.91kgN·m-3·d-1;43d2.66kgN·m-3·d-1,40d2.45kgN·m-3·d-1,8.6%。DOANAMMOX,DO,ANAMMOX-UASB。(DO5mg·L-1):,ANAMMOX,ANAMMOX,ANAMMOX。。2.3　ANAMMOX2.3.1　表观性状　70d,HRT0.14h,1408L·d-1,(superficialliquidup-flowvelocity,SLUV)11.