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5 5环境工程学报Vol.5,No.520115ChineseJournalofEnvironmentalEngineeringMay2011王 燕 王淑莹＊ 孙洪伟 彭永臻 张晶宇 甘冠雄(,100124) UASB-SBR,,,SBR。NO-2pHFNA。,pH,NO-2,NO-2Andrews。pH=7、7.58AndrewsKI22.20、22.711665.97mg/L。pH7～8,pH,KI,FNA。 NO-2 X703.1 A 1673-9108(2011)05-1081-05PartialbiologicalnitrogenremovaloflandfillleachatewithhighnitrogenconcentrationandkineticsofdenitrificationWangYan WangShuying SunHongwei PengYongzhen ZhangJingyu GanGuanxiong(KeyLaboratoryofBeijingWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract OnthebasisofshortcutbiologicalnitrogenremovalfromlandfillleachatebyusingUASB-SBRsystem,kineticofnitriteactingaselectronacceptorondenitrificationwasinvestigatedbybatchtests.Theinhibi-toryeffectofFNAondenitrificationwasstudiedwithdifferentconcentrationsofNO-2andpH.TheresultshowedthatspecificdenitrificationratecorrelatedtheoriginalnitriteaccordwithAndrews'sinhibitionmodelundertheconstantpH.KIofAndrews'sinhibitionmodelwere22.20mg/L,22.71mg/L,1665.97mg/LwhenpHwas7,7.5,8,respectively.WhenpHwasintherangeof7to8,KIwasrisingwiththeincreaseofpH,andtheeffectofFNAinhibitionondenitrificationbacamemuchweaker.Keywords landfillleachate;nitrite;denitrification;kinetics;freenitrousacid:(8091001);(PHR20090502):2010-01-17;:2010-02-01:(1986～),,,。E-mail:wangyan2008@emails.bjut.edu.cn＊,E-mail:wsy@bjut.edu.cn 、,[1]。、、、,。[2-3],。2。(AOB)NO-2-N,(NOB)NO-3-N,NO-3-NNO-2-N、NON2O,N2。,NO-2-NN2[4]。、。NO-2,[5]:0.67CH3OH+NO2-+0.53H2CO3※1.23H2O+0.04C5H7O2N+0.48N2+HCO-(1),NO-22:(1)NO-2。NO-2,pH,NO-2。(2)(FNA)[6]。Zhou5[6]FNANO-2。Prakasam[7],NOBFNA0.07mg/L。Vadivelu[8],FNA0.011mgHNO2-N/L0.023mgHNO2-N/L,NOB,FNA0.4mgHNO2-N/LAOB。FNA[9]:[FNA]=[NO-2-N]exp(-2300273+T)×10pH(2),,NO-2pHFNA。NO-2pHFNA。,,[10-13]。,,UASB-SBR,,pHNO-2,FNA。1 1.1 ,、、,pH7.1～8.5,COD3000～5000mg/L,TN1500～2600mg/L,NH+4-N1000～2400mg/L,NO-3-N2.6～9.6mg/L,NO-2-N1～2.6mg/L,TS15800mg/L,500～750,,4。1.2 UASB-SBR,、UASB、SBR,1。,,50L。150mm,10L。UASBSBR,UASB3L,SBR9L。UASB,SBR,25L。UASB30±2℃,SBR。1.3 1 UASB-SBRFig.1 FlowdigramofUASB-SBRbiologicalsystemUASB,SBR。1.4 NH+4-N、NO-3-N、NO-2-NCOD[14]。TNTN/TOC(MultiN/C3000)。WTW(pH/Oxi340i)pH,0.05mol/LNaOHHClpH。1.5 NaNO260mg/L:SBR,3L,3。3mLNaNO2,NO-260mg/L(,C/N5～6),T=22℃。3pHpH7±0.02、7.5±0.028±0.02。NO-2,1。2 2.1 SBR(NAR):NAR=ρ(NO-2-N)ρ(NO-2-N)+ρ(NO-3-N)×100%(3)SBR110。2SBRCOD。210825 :1 Table1 experimentalparameterspHC∶NT(℃)NaNO2(mL)NaNO2(mg/L)(mL)1#7.05∶1220.25/1/3/4/5/75/20/60/80/100/1400.1～12#7.55∶1220.25/0.5/1/3/5/75/10/20/60/100/1400.1～13#8.05∶1222/3/5/6/8/13/25/5040/60/100/120/160/260/500/10000.3～6,SBRCOD722mg/L,COD428mg/L,COD,,,COD。,NH+4-N,127.96mg/L3.17mg/L,3.62mg/L,121.03mg/L,(3),NO-2-N97.09%,FA0.118～17.79mg/L。,NOBFA,SBR。2 CODSBRFig.2 VariationsofCOD,NH+4-N,NO-2-N,NO-3-NinSBR2.2 pHNO-2pH=7,NO-25mg/L,3.37mg/(g·h)。pH7、7.58NO-2,3。3,pH=8Monod[15]。NO-2,,NO-2,。Monod:v=vmaxSKs+S(4),v(mg/(g·h));vmax(mg/(g·h));S(mg/L);Ks(mg/L)。3 pHNO-2Fig.3 RelationbetweenspecificdenitrificationrateandinitialnitriteunderdifferentpHpH8,NO-2Monod,,NO-2,pHMonod,Andrews[16]。:v=vmaxSKs+S+S2/KI(5),v(mg/(g·h));vmax(mg/(g·h));S(mg/L);Ks(mg/L);KIAndrews(mg/L)。(4)(5),KI,KI,AndrewsMonod。2[17]。3 3.1 pH7Andrews:vN=vNmaxSNKSN+SN+S2N/KIN(6)10835,vN(mg/(g·h));vNmax(mg/(g·h));SNNO2-(mg/L);KSN(mg/L);KIN(mg/L)。matlabpH=7An-drews,,pH=7,NO-2An-drews,4。pH=7Andrews,KSN=12.44mg/L,vNmax=12.67mg/(g·h),KIN=20.20mg/L。pH=7Andrews:vN=12.67SN12.44+SN+S2N/20.20(7)4 pH=7NO-2Fig.4 RelationbetweenspecificdenitrificationrateandinitialnitriteunderpH=73.2 pH7.5,pH=7.5,NO-2Andrews,5。pH=7.5Andrews,KSN=2.77mg/L,5 pH=7.5NO-2Fig.5 RelationbetweenspecificdenitrificationrateandinitialnitriteunderpH=7.5vNmax=20.24mg/(g·h),KIN=22.71mg/L。pH=7.5Andrews:vN=20.24SN2.77+SN+S2N/22.71(8)3.3 pH8Monod:vN=vNmaxSNKSN+SN(9)(lineweaver-burkplot)(9):1vN=KSNvNmax×1SN+1vNmax(10)(10),vNmax、KSN,1/vN、1/SN,1/vNmax,KSN/vNmax,vNmax、KSN。,matlabpH=8Monod,6。pH=8Monod、KSN=232.56mg/L,vNmax=79.97mg/(g·h)。pH=8Monod:vN=79.97SN232.56+SN(11)3.4 FNAKINO-2,pH,FNA,pH。(2),pH7～8NO-2,FNApH,NaNO2100mg/L,FNApH=70.025mgHNO2-N/LpH=80.0025mgHNO2-N/L,FNA,KI,22.20mg/L1665.97mg/L。AndrewsKI,KI。,pH,FNA。4 (1)pH,NO-2,NO-2Andrews。(2)Andrews,pH=7、7.58KSN12.44、2.77232.56mg/L,vNmax12.67mg/(g·10845 :6 pH=8NO-2Fig.6 RelationbetweenspecificdenitrificationrateandinitialnitriteunderpH=8h)、20.24mg/(g·h)79.97mg/(g·h)。(3)pH=7、7.58AndrewsKI22.20、22.711665.97mg/L。,pH7～8NO-2,pH,KI,FNA。[1],..:,2005.1-47[2]ShiskowskiD.M.,MavinicD.S.Biologicaltreatmentofahighammonialeachate:Influenceofexternalcarbondur-inginitialstartup.WaterRes.,1998,32(8):2533-2541[3]MartienssenM.,SchöpsR.Biologicaltreatmentofleachatefromsolidwastelandfillsites-alterationsinthebacterialcommunityduringthedenitrificationprocess.Wa-terRes.,1997,31(5):1164-1170[4],,,./UASB-SBR.,2009,29(2):207-212[5],..:,2000.237[6]ZhouY.,PijuanM.,YuanZ.G.Freenitrousacidinhibi-tiononanoxicphosphorusuptakeanddenitrficationbypo-ly-phosphateaccumulatingorganisms.BiotechnologyandBioengineering,2007,98(4):903-912[7]PrakasamT.B.S.,LoehrR.C.Microbialnitrificationanddenitrificationinconcentratedwastes.