NO3NO2作为生物除磷最终电子受体的研究初探杨聪和

　　　　　　　　　　　　11　2　20056JournalofTianjinInstituteofUrbanConstruction　Vo.l11　No.2　Jun.2005NO3-、NO2-*杨聪和1,孙力平1,李秀敏1,李　亮2(1.,300384;2.,830052)　　　　　　　　:论述了生物除磷过程中以NO3-、NO2-作为最终电子受体时,厌氧条件下释磷规律,缺氧条件下PO43--P的去除效果以及缺氧段NO2--N的变化情况.得出结论:亚硝酸盐在一定程度上可以充当生物除磷的最终电子受体;以亚硝酸盐为电子受体,缺氧段的反硝化率要大于以硝酸盐为电子受体的情况;高浓度亚硝酸盐会抑制反硝化聚磷菌的厌氧释磷,而且这种抑制作用不是瞬间的,至少会持续一段时间.　　:;;;;:X172　　　:A　　　:1006-6853(2005)02-0102-05　　,,-β--(PHA);,,PHA,[1-2].,(O2,NO3-)PHA,.,()[3].,,,,,,.　　,,.[4-5],,[6-7].　　,.,COD200mg/L,PO43--P9.38mg/L,NH4+-N10mg/L,,C/N.1　1.1　　　1,SBR,76cm,14.5cm,,,11.5L.,15cm,5().(0.65m,450L/h),.　　,COD,KH2PO4K2HPO43H2OP..1.1.2　　　,*:2004-12-22;:2005-01-06　　　:(043112011);(04227)　　　:(1980-),,,./.2h,3.5h,0.5h,2,30d,,.1　1　/(mgL-1)NaAc3H2O200mgCOD/LNH4Cl10mgN/LKH2PO4+K2HPO43H2O9.38mgP/L、ZnCl20.1MgSO40.5FeCl30.5MnSO40.1KI0.1CaCl20.5H2BO40.1NiCl20.11.3　　　2.2　CODHACHCODPO43--PNH4+-NNO3--NNO2--NN-(1-)-pHHANNAHI98127pHDOYSI5000MLSS2　　　.;..,.　　1mol/LHClNaOHpH6.5±0.2,pH7.0±0.1,[8-9].　　MLVSS3500mg/L,22d.,,2h,7h.2.1　NO3-、NO2-　　2,NO3-,C/N,,,1350︺0;NO2-,C/N,,C/N5.0,330︺0,C/N4.2,50︺0.,,,770︺0.,,,.2　NO3-、NO2-,C/N2.2　NO3-、NO2-　　3C/N,3.4、4.2、5.0,3C/NPO43--P,NH4+-N,NOX--NNO-2-N.,,,103　　　:NO3-、NO2-.2.2.1　NO3-、NO2-作电子受体对缺氧段吸磷的比较　　3,,C/N3.4,.,,3h,3h,,,,.C/N4.2,.3　NO3-、NO2-　　3,,.,,,,.,,C/N,COD,,NO2--N3h,NO2-,.　　C/N4.2,3h,PO43--P3.33mg/L,640︺0,.2.2.2　NO3-、NO2-作电子受体对缺氧段氨氮去除比较　　,,,4.,C/N,,..　　,,.4　NO3-、NO2-2.2.3　NO3-、NO2-作电子受体对缺氧段NOX--N去除　　5,NOX--N(NO3--N+NO2--N).,C/N,,NOX--N..5　NO3-、NO2-NOX--N　　,,,NOX--N,,.,:①;②,104　　2005　11　2　,.2.3.4　NO3-、NO2-作电子受体对缺氧段NO2--N变化情况　　6,NO2--N.,,NO2--N0,,,NO2--N,.6,,C/N,NO-2-N0.,NO2--N,.6　NO3-、NO2-NO2--N　　,,,,NO2--N,.,,,NO2--N,,.,,,:①,,;②1h,.3　　　　(1),,.　　(2).　　(3),.　　(4),,,.:[1]　.[M].:,2002.[2]　,.[M].:,2003.[3]　,　.[J].,1998,24(8):69-73.[4]　JENKINSD,TANDOIV.Theappliedmicrobiologyofen-hancedbiologicalphosphateremovalaccomplishmentsandneeds[J].WaterRes,1991,25:1471-1478.[5]　VANSTARKENBURGW,RENSINKJH.BiologicalP-re-moval:stateoftheartintheNetherlands[J].WaterSciTechnol,1993,27:317-328.[6]　HUJY,ONGSL.Anewmethodforcharacterizingdenitrif-yingphosphorusremovalbacteriabyusingthreedifferenttypesofelectronacceptors[J].WaterRes,2003,37:3463-3471.[7]　MEINHOLDJ,ARNOLDE.Effectofnitriteonanoxicphos-phateuptakeinbiologicalphosphorusremovalactivatedsludge[J].WaterRes,1999,33(8):1871-1883.[8]　KUBAT,VANLOOSDRECHTMCM.Phosphorousandni-trogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystem[J].Wat.Res,1996,30(7):1702-1710.[9]　KUBAT,VANLOOSDRECHTMCM.Effectofcyclicexpo-sureontheactivityofdenitrifyingphosphorousremovingbac-teria[J].Wat.Sc.iTech,1996,34(1-2):33-40.105　　　:NO3-、NO2-PrelmiinarystudyofnitrateandnitriteasfinalelectronacceptorofbiologicalphosphorousremovalYANGCong-he1,SUNLi-ping1,LIXiu-min1,LILiang2(1.DepartmentofMunicipalandEnvironmentalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China;2.ResourceandEnvironmentalEngineeringCollege,XinjiangAgriculturalUniversity,Urumchi830052,China)Abstract:Theruleofphosphorousreleasingunderanaerobiccondition,theremovaleffectsofNOX--NandPO43--Punderanoxicconditions,andthevariationofNO2--Narediscussedwhennitrateandnitriteareusedtobethefinalelectronaccep-torduringbiologicalremovalprocess.Itisconcludedthatinsomeextend,nitritecanbeusedasthefinalelectronacceptorofbiologicalphosphorousremova.lByusingnitriteaselectronacceptor,thedenitrifyingrateishigherthantheconditionofu-singnitrate.Highconcentratednitritewillinhibitanaerobicphosphorousreleaseofdenitrifyingdephosphatationremovalbac-teria,whiletheinhibitionisnotinstant,butwilllastforsometime.Keywords:electronacceptor;biologicalphosphorousremoval;nitrate;nitrite;denitrifyingdephosphatation(上接第97页).,..　　,、、.,,.、、.20、、,,.:[1]　.[M].:,1999.[2]　　.[M].:,2002.[3]　　.[J].,2003,22(6):169-172.[4]　　.[J].,2004,19(7):8-10.[5]　.[J].,2004,(7):20-23.ReflectiononurbanizationCHEZhu-ming(DepartmentofArchitecture,AnhuiInstituteofArchitectureandindustry,Hefei230022,China)Abstract:Withtherapidexpansionofurbanization,weareconfrontedwithaseriesofproblemssuchasprotectionofhistor-icalheritage,harmoniousdevelopmentbetweencityandruralarea,ecologicalenvironmentprotectionofcity,andurbanplanning.Theseproblemsaredifficulttodealwith.Sotheseconflictsarediscussedandsomestrategiesareproposed.Keywords:urbanization;protection;ecologicalenvironment;urbanplanning106　　2005　11　2