单一缺氧厌氧UASB同步反硝化省略AO组合工艺处理实际晚期渗滤液孙洪伟

　60　11　　　　　　　　　　　　Vol.60　No.11　200911　　CIESC　Journal　　　November　2009/UASBA/O孙洪伟,王淑莹,时晓宁,张树军,杨　庆,彭永臻(,100124):,/UASB-A/O,A/O。,、。COD6537mg·L-1,NH+4-N2021mg·L-1,300mg·L-115.6mg·L-1,95.4%99.2%。UASBCOD6.5kgCOD·m-3·d-1,5.3kgCOD·m-3·d-1。UASB,,UASB100%。(FA)(FNA),A/O,99%。:;;;;;:X703.1　　　　　　　:A:0438-1157(2009)11-2891-06Singleanoxic/anaerobicUASBsimultaneousdenitrificationandmethanogenesiscombinedwithA/OfortreatmentofreallandfillleachateSUNHongwei,WANGShuying,SHIXiaoning,ZHANGShujun,YANGQing,PENGYongzhen(KeyLaboratoryofBeijingWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:Thetreatmentofrealleachatefrommunicipallandfillwithhighammonianitrogen(NH+4-N)contentwasstudiedbyusingacombinedprocessoflab-scaleanoxic/anaerobicup-flowanaerobicsludgebed(UASB)-A/O.ThemethodforachievingandstabilizingpartialnitrificationintheA/Oreactorwasalsoinvestigated.ExperimentalresultsclearlyshowedthatCODandnitrogencanbesimultaneouslydeeplyremovedwiththiscombinedbiologicalsystem,averageCODandNH+4-Nhavebeenreducedfrom6537mg·L-1and2021mg·L-1intherawleachateto300mg·L-1and15.6mg·L-1,respectively.FortheanoxicUASBreactor,theaverageorganicloadingratereachesto6.5kg·m-3·d-1,anditsaverageorganicremovalrateis5.3kg·m-3·d-1.ThedenitrificationandmethanogenesisaresimultaneouslyconducedintheUASBreactor,andalmost100%denitrificationhasbeenachieved.AstableandlongtermpartialnitrificationhavebeenrealizedbythecooperativeeffectofFAandFAN,theammonianitrogenhasbeenremovedthroughthehighlyeffectivepartialnitrificationwithabove99%nitriteaccumulationrate.Keywords:landfillleachate;simultaneousdenitrificationandmethanogenesis;biologicalnitrogenremoval;partialnitrification;FA;FNA　　2009-04-07,2009-07-27。:。:(1976—),,,。:(8091001);(50808004)。　　　Receiveddate:2009-04-07.Correspondingauthor:WANGShuying,[e-mail]:supportedbytheKeyProgramofNaturalScienceFoundationofBeijing(8091001)andtheNationalNaturalScienceFoundationofChina(50808004).　　、C/N、[1]。[2-3],/,。()(),,。-,:①Peng[4]UASB-A/O,(NO-2-NN2)()UASB,UASB,UASB;②Im[5]-,UASB,,,。,,。,,/UASB-A/O,、、;A/O。1　1.1　1　Table1　CharacteristicoflandfillleachateItemRangeAveragepH7.8—8.98.3COD/mg·L-11038—80915631TN/mg·L-11005—24442140NH+4-N/mg·L-1890—23601863NO-3-N/mg·L-10.8—10.55.6NO-2-N/mg·L-10.2—16.32.0,1。1.2　/UASB-A/O,/UASB、A/O、。1。,,50L。150mm,10L。/UASB,。UASB、70、80、400mm,、40、50、1000mm。、50mm,3L。A/O,10L,5,1A,。UASB(30±2)℃,A/O。UASB,、。UASBA/OA/O,A,。/UASB,1　/UASB-A/OFig.1　Schematicdiagramofanoxic/anaerobicUASB-A/Obiologicalsystem　·2892·　　　　　60　,NO-x-N,,。1.3　100ml,0.45μmMilliporefilter,105℃,MLSS。600℃,VSS。NH+4-N、NO-3-N、NO-2-N、COD、[6]。TN、TON、TC、TOC、TICTN/TOC(MultiN/C3000,)。WTWDO、ORP、pH。1.4　UASB。A/O,,“”。2　2.1　/UASB-A/O　　COD2。113d,UASB6.5kgCOD·m-3·d-1,5.3kgCOD·m-3·d-1。2　COD/UASB-A/OFig.2　EvolutionofCODconcentrationinanoxic/anaerobicUASB-A/OsystemCODUASB,35.4%64.6%。UASBA/O,COD300mg·L-1,CODA/O,A/ONO-x-N(A),(O)。,A/O。,UASB、A/O81.1%、14.3%95.4%。,COD4785～8091mg·L-1,COD72～582mg·L-1,95.4%,、。2.2　/UASB-A/OUASB-A/O3。3　UASB-A/OFig.3　Evolutionofnitrogeninanoxic/anaerobicUASB-A/OsystemRaw—rawleachate;UASBi—UASBinfluent;UASBe—UASBeffluent;Anoxic—anoxiczoneofA/O;Oxi-1～Oxi-4—fouraerobiczoneofA/O　·2893·　11　　:/UASBA/O3(a),,NH+4-N。NH+4-N2021mg·L-1,15.6mg·L-1,99.2%。,,A/O:Ⅰ,NO-3-N;Ⅱ,NO-2-N。3(b)。(3∶1),UASB,A/O(NH+4-NNO-3-N/NO-2-N),UASBA/O。,UASBNO-2-NA/O。UASBNO-2-N1mg·L-1,100%。A/O27.7%,A/O,。/UASB-A/O,TN2128mg·L-1,TN325.7mg·L-1,84.6%。,,,TN。2.3　FAFNAA/O(FA)、(FNA)[7][FA]=1714[NH+4-N]×10pHexp6334273+T+10pH[FNA]=[NO-2-N]exp-2300273+T×10pH　[FA],mg·L-1;[NH+4-N],mg·L-1;T,℃;[FNA],mg·L-1;[NO-2-N],mg·L-1。FAFNA,(AOB),(NOB)FAFNA[8-10]。4A/OFA、FNA。4,A/OA,89.3mg·L-1,pH8.98,4　FAFNAA/OFig.4　VariationsofFAandFNAconcentrationinA/Oreactor　26.8℃,FA42.2mg·L-1,,A/O,[NH+4-N]pH,FA,4(Oxi-4)FA0.26mg·L-1。,,FANOB,,NOB,FANOB,,。FA,,[FNA]0.004mg·L-1(A)0.68mg·L-1(Oxi-4)。Vadivelu[11],FNA0.011mg·L-10.023mg·L-1,NOB。Anthonisen[7],FNA0.22mg·L-1NOB。Prakasam[12],0.07mg·L-1FNANOB。,2(Oxi-2),FNA0.21mg·L-1,,FNA,NOB。,FA、FNANOB。NOB,NOBAOB,A/O。2.4　、pHA/O,UASBpH(5)。UASBpH·2894·　　　　　60　UASB。3037mg·L-14127mg·L-1。pH7.868.79。1gNO-2-N3.57g,UASBNO-2-N224mg·L-1,799mg·L-1。A/OA,pHUASB8.798.98,4127mg·L-11667mg·L-1。,pH。,pH7.7mg·L-1,1194mg·L-1。,1gNH+4-N7.14g,A/ONH+4-N80mg·L-1,560mg·L-1。UASBA/O。5　、pH/UASB-A/OFig.5　TypicalvariationsofalkalinityandpHinanoxic/anaerobicUASB-A/Osystem　,UASB、TN,A/O。Peng[4],,。,pH。FA,,。,,pHFA,,。,。3　　(1)/UASB-A/O、,COD、NH+4-N95.4%99.2%。(2)UASB,A/O。,84.6%TN。(3)FAFNA,A/O90%,。(4)/UASB-A/OTN、A/O,,UASB、A/O、。References[1]　WangBaozhen(),WangLin().TreatmentandDisposalofLandfillLeachatefromMunicipalSolidsWaste().Beijing:ChemicalIndustryPress,2005[2]　AgˇdagˇON,SponzaDT.Aanaerobic/aerobictreatmentofmunicipallandfillleachateinsequentialtwo-stageup-flowsludgeblanketreactor(UASB)/completelystirredtankreactor(CSTR)system.ProcessBiochem.,2005,40(2):895-902[3]　YamamotoT,TakakiK,KoyamaT,etal.Long-termstabilityofpartialnitritationofswinewastewaterdigesterliquoranditssubsequenttreatmentbyAnammox.Bioresour.Techno.,2008,99(14):6419-6425[4]　PengYZ,ZhangSJ,ZengW