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pH1,1＊,1,1,1,1,2(1., 410082;2., 410076):,DO1.5～2.0mgL,(30±1)℃,HRT24h,pH,(NLR)(HRT).,150mgL,pH7.7～8.2,10d,96%,95%;NLR(NH+4-N)0.15kg(m3·d)0.24kg(m3·d),90%,96%;NLR,HRT,HRT.:pH;;;;:X703.1 :A :0250-3301(2007)08-1720-06:2006-08-31;:2006-12-25:(50478054);(2004DFA06200);(K051132-72);(NCET-04-0770):(1981～),,,,E-mail:denngpin@126.com＊,E-mail:xmli@hnu.cnCompleteNitritationProcessinanBiofilmMovingBedSystembyControllingpHDENGPin1,LIXiao-ming1,YANGQi1,ZHANGShao-qiang1,ZENGGuang-ming1,ZHANGYu1,YILong-sheng2(1.CollegeofEnvironmentalScienceandEngineering,HunanUniversity,Changsha410082,China;2.CollegeofChemistryandEnvironmentalEngineering,ChangshaUniversityofScience&Technology,Changsha410076,China)Abstract:Completenitritationprocessinanbiofilmmovingbedsystemwasstarted-upbyinoculatingnitrobacteriaandcontrollingpH,andtheeffectsofnitrogenloadingrate(NLR)andhydraulicretentiontime(HRT)onthestabilityofthesystemwereinvestigated.Theresultsshowedthatthesystemcouldachievecompletenitritationafter10day'sacclimationbycontrollingpHwithintherangeof7.7～8.2,undertheconditionsoftemperature(30±1)℃,DO1.5～2.0mgL,HRT24h,ammoniaconcentration150mgL.Conversionrateofammoniawasabove96%andnitritationrate(NO-2-NNO-x-N)wasmorethan95%.Inaddition,thesystemremainedcompletenitritationwhenNLRincreasedfrom0.15kg(m3·d)to0.24kg(m3·d),andconversionrateofammoniawasstillabove90%,nitritationratemaintainedat96%,butthetypeofnitrificationturnedfromcompletelynitritationtocompletelynitrificationundertheconditionofoveraerationbyextendedHRTunderlowNLR.However,itcouldberesumedbyshortenedHRT.Keywords:pH;freeammonia;completenitritation;biofilm;movingbed1 -Fig.1 Schematicdiagramofcompletenitritation-ANAMMOXprocess -,50%.,(DO)、、(HRT)[1～3],SHARON[4],50%.,50%,50%(1).. Oyanedel-Craver[5],(KLa),.,.1 1.1 (CSTR).110mm、3.25L、3L;,.,,2.non-woven28820078 ENVIRONMENTALSCIENCEVol.28,No.8Aug.,2007DOI:10.13227/j.hjkx.2007.08.008.1cm,0.8cm(3),.1. 2. 3. 4. 5.6. 7. 8. 9.pH 10.2 Fig.2 Schematicdiagramofexperimentalsystem3 Fig.3 Schematicdiagramoffillings1.2 :KH2PO460mgL,MgSO440mgL,CaCl230mgL,NH+4-N150mgL,NaHCO34.0gL,0.5mLL.(gL):FeCl3·7H2O1.5,H3BO30.15,CuSO4·5H2O0.03,KI0.03,MnCl2·4H2O0.12,(NH4)6Mo7O24·7H2O0.06,ZnSO4·7H2O0.12,CoCl2·6H2O0.15.1.3 SHARON,,(DO)1.5～2.0mgL,pH7.7～8.2,,NLRHRT.1.4 NH+4-N;NO-2-NN-(1-)-;NO-3-N;(COD).WTW340ipH、DOpHDO.[]=[]+[]+[].2 2.1 2.1.1 NH+4-N、NO-2-NNO-3-N,SHARON.SHARON,150mgL.:(30±1)℃,DO0.5mgL,HRT24h,pH7.5～8.0.,NO-2-NNH+4-N1,NO-2-NNOx--N95%,4.4 Fig.4 Variationofnitrouscompoundsconcentrationsinphaseofbiofilmculturing2.1.2 NH+4-N、NO-2-NNO-3-N91d.,DO1.5～2.0mgL,pH7.7～8.2.5,,,DO0.5mgL1.5～2.0mgL,;10d,100dNH+4-N5mgL,NO-2-N130mgL,96%,NO-2-N17218:pHNOx--N96%,36d.,.5 Fig.5 Variationofnitrouscompoundsconcentrationsinphaseofacclimation2.2 2.2.1 ,90d.40d,;60d,;,.:①.,,[6];②[7].DO,,,,,.2.2.2 SHARON,,NO-3-N,.,.DO1.5～2.0mgL,(1.2～1.5mgL),DO,OLAND.pH.pH2:①pH,pH6.0～7.5,pH7.0～8.5[8];②pH,.,pH7.7～8.2,pH,pH,.,(NH3-N,FA)NH+4.FA[9]:cFA=1714×[NH+4-N]×10pHKbKw+10pH(1),cFA,mgL;Kb,Kb=10-9.24(20℃);Kw,Kw=0.69×10-14(20℃);KbKw=e[6344(273+T)].6 cFAFig.6 VariationofcFAinphaseofacclimationAnthonisen[10]:cFA2,;0.6mgLFA,cFA5mgL,40mgL.(1)cFA(6),cFANH+4-N,40mgLcFA,4d10mgL;cFA10mgL,5～10mgL.Chung[9],cFA5～10mgL,,cFA,cFA.Yun[11]FA.1722 28 ,pHpHcFA,.2.3 2.3.1 (NLR),,,DO1.5～2.0mgL.pH,NLR(7).150mgL400mgL,HRT24h40h,NLR(NH+4-N)0.15kg(m3·d)0.24kg(m3·d).7 NLRFig.7 EffectofNLRoncompletenitritation,NLR,NO-2-N,NO-2-NNOx--N96%,,NLRNH+4-NNO-3-N.NLR0.15、0.19、0.2250.24kg(m3·d),NO-3-N3.8、5.22、10.0411.48mgL,NLR,NO-2-N135mgL330mgL,,NO-3-N;NO-2-NNOx--N96%,.NLR0.24kg(m3·d),NH+4-N,27mgL,33.5mgL,90.2%,.Bernet[12],NLR0.083kg(m3·d).pHNLRBernet1.81～2.89,.2.3.2 HRTNO-2-N,..,,.,HRTNLR,.,NLR0.15kg(m3·d).NH+4-N150mgLNLRHRT38、2420h,8.8 NLRHRTFig.8 EffectofHRToncompletenitritationatlowNLRHRT38h,NH+4-N100%,NO-2-N,NO-3-N,7d,NO-3-N138.5mgL,NO-2-N5mgL.NO-2-NNO-3-N,NO-2-NNO-3-N.,cFA0,,DO,,NO-2-NNO-3-N,NO-3-N,.,HRT24h,NH+4-N5mgL,cFA5～10mgL,,NO-2-N,.DO,pHcFA.[13]17238:pH.HRT,NLR,,,.2.3.3 ORP(ORP),.SBRORP,pH、ORP,.Gao[14]pH、ORPSBR.,ORP.,ORP.ORP,ORP,ORPCTSR.9ORP,ORP,ORP60～75mV.139、140、181d,ORPpH,151、204dORPpH.,ORPpH,pH.9 ORPFig.9 VariationofORPincompletenitritationbiofilmsystemORP,、.3 (1)pHpH.pH7.7～8.2pH,pHFA5～10mgL,,.(2)NLR0.15～0.24kg(m3·d),90%,.,HRTNLR;NLRHRT,cFA,NO-2-N,,,HRT.(3)ORP,ORP.ORP60～75mV.ORP,、.:[1]HellingaC,SchellenAAJC,MulderJW.Thesharonprocess:Aninnovativemethodfornitrogenremovalfromammonium-richwastewater[J].WatSciTech,1998,37(9):135～142.[2]BaeW,BaekS,ChungJ,etal.Optimaloperationalfactorfornitriteaccumulationinbatchreactor[J].Biodegration,2002,12(5):359～366.[3]CiudadG,RubilarO,MuńozP,etal.Partialnitrificationofhighammoniaconcentrationwastewaterasapartofashortcutbiologicalnitrogenremovalprocess[J].ProcessBiochemistry,2005,40(5):1715～1719.[4]VillaverdeSantiago.Recentdevelopmentsonbiologicalnutrientremovalprocessesforwastewatertreatment[J].EnvironmentalScienceandBioTechnology,2004.3(2):171～183.[5]Oyanedel-CraverV,RuizG,ChamyR.Nitriteaccumulationinactivatedsludgeandairliftreactors:processperformancecomparison[J].EnvironmentalEngi