SBR生物脱氮机理及其影响因素孙振世

SBR孙振世,柯　强,陈英旭(,　310029)　:。SBR、-、-,SBR。:SBR;;-;-:X703　　:A　　:1000-1166(2001)02-0016-04MechanismofBiodenitrificationofSBRandItsEffectingFactors/SUNZhen-shi,KEQiang,CHENYing-xu/(De-partmentofEnvironmentalEngineering,ZhejiangUniversity,Hangzhou310029,China)Abstract:Technologyofnitrification-denitrification,andshortcutnitrification-denitrificationtoremovethenitrogenfromwastewaterwerereviewedinthispaper.Andthemicrobes,nitrogenremovingmechanismsandinfluencefactorsweredis-cussed.Furthermore,someexistingproblemswerealsodiscussed.Keywords:SBR,biodenitrification,nitrification-denitrification,shortcutnitrification-denitrification　　A/O、A2/O,。[1-6],,,,(SBR)。SBR,70,。SBR,,、、,,SBR,。SBR、-、-。1　SBRSBR。、、、、、。。,;NH+4-NNO-2-N;。,[8,9],SBR。,。,　　:2000-10-30　:2000-12-13:(1972-),,,。16　ChinaBiogas2001,19(2),。,,,,[10]。,、,,pH。,,。,,。NO-3、NO-2N2,,,pH。SBR,、,,,。,SBR,。,、,,。,,,。2　SBR-2.1　基本机理,,,,,,。,,(NO-2-N),,(NO-3-N)。。,,,,,,。2.2　影响硝化-反硝化生物脱氮的因素2.2.1　,,、pH。。15～35℃,20℃,;38℃,;20℃,。pH,pH6.0～7.5;pH7.0～8.5。pH6,。,SBR,,,C/N4,,,C/N4。,C/N410,C/N,。2.2.2。,0.04kgTN·kgMLSS-1d-1,。,0.02～0.03kgTN·kgMLSS-1d-1[3]。SBR。Diamadopoulous,,,,47%63.2%。,,(),。17　ChinaBiogas2001,19(2),,。,/,,MalaspinsSBR,/,。,,,,[11,12]。SBR。DiamadopoulousSamarasSBR,、、。,/。,DO96%,2%;,,,NO-x-N,,[11]。,,,。,,,0.21d-11.2d-1,,,,SBR。3　SBR-3.1　基本机理,NH+4,-。,-,-(Shortcutnitrifica-tion-denitrification),NH4-NNO-2-N,N[13]。-N-,:1.--25%(12);2.,C,34,60%C,40%C。,C/N2.86:1,-C/N1.71:1,C/N;3.,N。-N-NNO-2-NNO-3-N,。,N,,C,,N。2NH+4+3O2———2NO-2+2H2O+4H+(1)2NO-2+O2———2NO-3(2)NO-2+3H()—1/2N2+H2O+OH-(3)NO-3+5H()—1/2N2+2H2O+OH-(4)3.2　影响亚硝化─反亚硝化生物脱氮因素NO-2,NO-2,[NO-2-N/(NO-2-N+NO-3-N)50%]。pH、、、、DO、。SBRNH+4-N,NH4+-N、NO-2-NNO-3-N,、。pH,pH,I,pH6.818　ChinaBiogas2001,19(2),pH7.5,pH8.28.8;II,III,pH8.2,6.8,II,III,pH,8.8[14]。。,,,,,,,,DO0.5mg·L-1,。。,,、。,7.14mg·mg(NH4+-N)-1,3.17mg·mg(NH4+-N)-1。。4　SBR,(),,,:(1),SBR,,,。(2)-SBRSBR,-SBR,SBR,-,,,,SBR-,。(3)SBR、,SBR。(4)SBR,。:[1].[J]..2000,16(2):25-28.[2]AbufayedAA,SchroederED.PerformanceofSBR/denitrifi-cationwithaprimarysludgecarbonsource[J].JournalWPCF,1986,58:387-397.[3],.[J].,1997,17(5):474-477.[4],.[M].:1998.[5].[J]..1994,14(4):445-453.[6]BernetN,DelgenesN.Combinedanaerobic-aerobicSBRforthetreatmentofpiggerywastewater[J].WatRes,2000,34(2):611-619.[7].SBR.[J].2000,26(3):76-78.[8],.[J].,2000,1(1):8-15.[9],.[J]..1996,16(1):69-72.[10]ElisabethVMunch,PaulLant,JurgKelier.Simultaneousni-trificationanddenitrificationinbench-scalesequencingbatchreactors[J].WatRes,1996,30(2):277-284.[11]DiamadopoulosE.Comdinedtreatmentoflandfillleachateanddomesticsewageinasequencingbatchreactor[J].WatSciTech,1997,36(2-3):61-68.[12]SousaJT,ForestiE.Domesticsewagetreatmentinanupflowanaerobicsludgeblanket-sequencingbatchreactorsystem[J].WatSciTech,1994,33(3)73-84.[13],,.-[J].,2000,16(2):29-31.[14].—SBR[D]..1999.19　ChinaBiogas2001,19(2)