搜索
66Vol.6,No.620056TechniquesandEquipmentforEnvironmentalPollutionControlJun.2005SBR陈雪松 许惠英 李成平(,310012) SBR。,/,/(SND)。37.0%。SBRNH3-N95.8%～99.2%,COD85.3%～92.6%。NO2-N,NO2-NCOD。 SBR / /(SND) X703.1 A 1008-9241(2005)06-0057-04Studyonbiologicaltreatmentofcoking-plantwastewaterbySBRprocessChenXuesong XuHuiying LiChengping(SchoolofBiologicalandEnvironmentalEngineering,ZhejiangShurenUniversity,Hangzhou310012)Abstract SBRprocesswasinvestigatedforremovaloforganicsandbiodenitrificationforcoking-plantwastewater.Theexperimentalresultindicatedthatshort-cutnitrification-denitrificationoccurredinthebiodenitri-ficationofcoking-plantwastewater.Furthermore,thereissimultaneousnitrification-denitrification(SND)undertheaerobiccondition,thedenitrificationrateoftheaerobicstageaccountedfor37.0%inthewholereactionperi-od.TheCODremovalrateis95.8%～99.2%andtheremovalrateofNH3-Nis85.3%～92.6%.Moreatten-tionshouldbepaidtoCODconcentrationintheeffluentduetoNO2-Naccumulation.Keywords SBR;coking-plantwastewater;short-cutnitrification-denitrification;simultaneousnitrifica-tion-denitrification(SND):2004-07-30;:2004-10-11:(1972～),,,,。E-mail:xuesongchen@163.com ,,、、,、,[1]。。22。1(NH+4)(NO-2),2(NO-3)。,N5+N3+N2N2O,。,/,NH+4NO-2,。//,N:(1)25%;(2)40%,C/N;(3),[2]。SBR。SBR,、、、5。SBR、、、。-,。1 1.1 ,、、,,:pH7.0～9.0;6COD750～1450mg/L;NH3-N300～650mg/L;100～260mg/L;20～45mg/L。15%Na2CO3pH。1.2 SBR1。48h,0.5h、39h、3h、0.5h、5h。2/,(9h)、(9h)、(9h)、(12h)。。pH,Na2CO3pH6.5～8.2(2～3h1)。1 SBRFig.1 SBRexperimentalset-up2 2.1 ,/。,,。NH3-N65～100mg/L,COD500～800mg/L。7,4200mg/L,8NH3-N15mg/L,NO2-N50～120mg/L,NO2-N/(NO2-N+NO3-N)92%～98%,COD120～200mg/L。CODNH3-N2。2.2 5080mg/L,40d,pH7.5～7.8,3.0mg/L,NH3-N、NO2-N、NO3-N3。2 CODNH3-NFig.2 RemovalratesofCODandNH3-Nincultivationanddomesticationstage3 Fig.3 ThemutativecurvesofnitrogenformsinSBR3,,NO3-N,4.74～15.2mg/L,NO2-N,NO2-N,。/。NH3-N,An-thonisen[3]。:NH3+H2ONH+4+OH-[FA]=1714×[NH+4-N]×10pHKbK/w+10pH:[FA]—;Kb—;Kw—。NH+4-NpH。Anthonisen0.1mg/L。NH3-N100mg/L、pH6.2,。0～9h(1),NH3-N340mg/L154mg/L,NH3-N586:SBR186mg/L,NO3-NNO2-N115mg/L。18～27h(2),NH3-N149mg/L,NO3-NNO2-N109mg/L。,NH3-NNO3-NNO2-N。2NO3-NNO2-NNH3-N,,/(SND)。/(SND)[4～7]。SBR、,,。,(MLSS)4.2～5.8g/L,,,。,0.8～2.7mm,。SND。,,。,,,。37.0%。/1。1 /Table1 Dataofnitrification-denitrificationdenitrificationrateindifferentreactionstages1122(mg/Lh)20.67—16.56—(mg/Lh)7.9113.974.365.211,21,。,2155.1%,2137.3%。,。,,,。,NO3-N。2.3 CODNO2-NCOD,、、。,,COD。4CODNO2-N。,COD,42COD。/,NO2-N,CODNO2-N。,,,COD,COD。,,NO2-NN2N2O,NO2-N,COD。NO2-N(1.0gNO2-N1.14gCOD),COD4,。,,。4 CODNO2-NFig.4 ThemutativecurvesofCODandNO2-NinSBR2.4 ,SBR8、2。2,SBRCOD1068～1395mg/L,COD86.5～192mg/L,COD85.3%～92.6%。《》(GB8978-1996)596(COD≤100mg/L),3,37.5%。2,NO2-N35.6～114.2mg/L,NO2-NCOD30.5%～67.8%,59.0%。,NO2-NCOD。2 SBRTable2 DataofSBRreactorduringsteadyoperation(mg/L)CODNH3-N(mg/L)CODNO2-NNO3-NNH3-N128742795.835.64.7713.5124945215667.88.499.501304460192114.210.93.82110243886.549.76.5516.5106842110850.39.1913.1109739492.847.513.518.31395469192102.715.611.0138448512464.312.620.1SBRNH3-N394～485mg/L,NH3-N3.82～20.1mg/L,NH3-N95.8%～99.2%。,SBRNH3-N。《》(GB8978-1996)(NH3-N≤15mg/L),6,75.0%。3 (1)SBR,NO3-N,NO2-N,/。(2)/(SND),37.0%。(3),,,NO3-N,NO2-NCOD59.0%。(4)SBRCOD86.5～192mg/L,COD85.3%～92.6%。NH3-N3.82～20.1mg/L,NH3-N95.8%～99.2%。SBR。[1],..,2002,(4):12～14[2],./.,2001,21(1):79～83[3]AnthonisenA.C.,LoehrR.C.,PrakasamT.B.S.,eta.lInhibitionofnitrificationbyammoniaandnitrousacid.JW-PCF,1976,48(5):835～852[4]MasudaS.,WatanableY.,IshiguroM.Biofilmpropertiesandsimultaneousnitrificationanddenitrificationinaerobicrotatingbiologicalcontactors.Wa.tSc.iTech.,1991,23(12):1355～1363[5]Halling-SorensenB.,HjulerH.Simultaneousnitrificationanddenitrificationwithandupflowfixedbedreactorapply-ingclinoptiloliteasmedia.Wa.tTrea.t,1992,7:77～88[6]MoriyamaK.,SatoK.,HaradaY.,eta.lSimultaneousbio-logical-removalofnitrogenandphosphorususingoxic-anae-robic-oicprocess.Wa.tSc.iTech.,1990,22(7～8):61～66[7]MunchE.V.,LantP.,KellerJ.Simultaneousnitrificationanddenitrificationinbench-scalesequencingbatchreac-tors.Wa.tRes.,1996,30(2):277～28460