不同MLSS对低温低碳氮比污水处理效果的影响马秀兰

MLSS马秀兰1,2,张凤君1,周兰影3,田　珍2,田　娇21.吉林大学环境与资源学院,长春130026;2.吉林农业大学资源与环境学院,长春130118;3.吉林省产品质量监督检验院,长春130022　:利用SBR反应器驯化低温、低碳氮比活性污泥,经过30d的驯化,活性污泥颜色由原来的深黑色、散状转变为浅色、絮状,考察不同MLSS对污水的处理效果并探讨基质降解动力学。结果表明:在进水COD和NH+4-N浓度一定的前提下,MLSS在3～4g/L时,出水水质最好,COD的去除率达到97.1%,总氮的去除率达到63.1%。铵态氮降解过程符合Monod一级动力学方程SeS0=e-KXt;拟合曲线的相关指数R为(-0.9548～-0.9856)。:低温;低碳氮比;污泥浓度;动力学:X131.2　　　:A　　　:1000-5684(2009)06-0733-05EffectsofDifferentMLSSonSewageTreatmentEfficiencybyLowTem-peratureandLowC/NMAXiu-lan1,2,ZHANGFeng-jun1,ZHOULan-ying3,TIANZhen2,TIANJiao21.CollegeofEnvironmentandResources,JilinUniversity,Changchun130026,China;2.CollegeofResourcesandEnvironment,JilinAgriculturalUniversity,Changchun130118,China;3.InstituteofSu-pervision&InspectiononProductQualityofJilinProvince,Changchun130022,ChinaAbstract:Inthepresentstudy,weinvestigatedactivesludgeacclimatedbylowtemperatureandlowC/NonaerobicconditionsinSBRreactor.After30daysofacclimatization,thesludgetransformedfromdeepblackandunconsolidatedintolight-colouredandflocculentstate.Oncompletionofactivesludgeacclima-tization,wealsoinvestigatedtheremovalrateofdifferentdensityMLSSandthedynamicsofsubstratedegradation.Theseresultsshowthattheoutflowedwaterqualityisbetterthanothers,theremovalrateofCODis97.1%andtheremovalrateoftotalnitrogenis63.1%onconditionthattheCODandNH4-NconcentrationofinflowedwateraredeterminedandtheMLSSis3—4g/L,andthedegradationprocessofammoniumnitrogenaccordswiththeMonodfirstorderdynamicequationsSeS0=e-KXt,R2=-0.9548—-0.9856.Keywords:lowtemperature;lowC/N;MLSS;dynamics:(20090413),(2008D002),:,,,,:。:2008-10-21　　:2009-03-12吉林农业大学学报　2009,31(6):733～[e-mail]　　,。,,[1]。、[2]。,,,。,,A/O、UCT———,[3-5]。C/N。C/N。,,、,“”。,、、,[6]。,,,。、,10℃,,,、[7-9]。,SBR(10～12℃)、C/N,,C/N。1　1.1　1.1.1　试验用水　,220mg/L,NH4Cl130mg/L,KH2PO422mg/L,CuSO420mg/L,MgSO420mg/L,FeSO420mg/L。,pH7.0,,K+、Mg2+、Ca2+、SO42-、Zn2+。1.1.2　试验仪器　:KL-1SBR(),22L。:5(1～5#)200mm、4L。、、。1.2　1.2.1　活性污泥的培养驯化方法　SBR。COD200～600mg/L,10～12℃,pH7～8,(COD∶N=8∶1)。14h,————。7d,,12h,2h。30d,MLSS3～4g/L,COD,C/N4∶1,40d。COD。1.2.2　试验设计　5,1,2,3,4,5g/L。COD170.6mg/L、42.63mg/L,5。1:0,10,20,30,40,60,80,100,120,180,240min,COD。2:0～2h20min1,3～12h30min1,NH4-N、NO3-N、NO2-NTN。1.3　[10]。COD,,,,TN;MLSS。2　2.1　COD、1,COD,,COD98%,COD,734　　　吉林农业大学学报　2009年12月JournalofJilinAgriculturalUniversity2009,December90%,COD,,。—◇—Influent;—□—Effluent;—△—Re-moval1　CODFig.1.ThechangeofCODintheactivatedsludgeac-climation2,(0～8d),,50%,C/N8,3g/L、C/N4,,,,20d,90%。95%,,。—◇—Influent;—□—Effluent;—△—Re-moval2　Fig.2.Thechangeofammoniaintheactivatedsludgeacclimation2.2　MLSS,,。,。,。2.2.1　不同MLSS对COD去除率的影响　3,COD。240min,5COD94.1%,96.6%,98.2%,98.5%,97.1%。COD。MLSS1g/L,10,20min,COD,,,。,COD,,COD。5g/L,COD97.1%,3g/L4g/L,,,、,。,3～4g/L。—◇—1#;—△—2#;—□—3#;—■—4#;—★—5#3　CODFig.3.TheremovalefficiencyofCODunderdifferentMLSS2.2.2　不同MLSS对铵态氮去除率的影响　4、5,CODNH4-N,,,7h1～5#537.1%,63.5%,89.8%,93.1%,96.3%。,,,,。,735马秀兰等:不同MLSS对低温低碳氮比污水处理效果的影响吉林农业大学学报JournalofJilinAgriculturalUniversity,。6,3#,4#,5#7h30mg/L,,10%。,,,12h,1～5#32.5%,52.1%,58.6%,63.1%,59.8%。—◇—1#;—△—2#;—□—3#;—■—4#;—★—5#4　Fig.4.ThedegradationcurveunderdifferentMLSS—◇—1#;—△—2#;—□—3#;—■—4#;—★—5#5　Fig.5.Theremovalefficiencyofammoniaunderdiffer-entMLSS7,5,,,,。,,,。,1mg/L,,。—◇—1#;—△—2#;—□—3#;—■—4#;—★—5#6　Fig.6.Theaccumulationofnitratenitrogenunderdif-ferentMLSS—◇—1#;—△—2#;—□—3#;—■—4#;—★—5#7　Fig.7.TheconcentrationvariationofnitritenitrogenunderdifferentMLSS8,,,MLSS4g/L,。MLSS1g/L,,,,。MLSS2～4g/L,MLSS,MLSS。MLSS4g/L,,,,,,,,,。736　　　吉林农业大学学报　2009年12月JournalofJilinAgriculturalUniversity2009,December—△—ρ(TN);—□—Removal8　TNFig.8.TheconcentrationofTNandremovalefficiencyineffluentunderdifferentMLSS2.3　,,,,,。:-dSdt=KXS,SeS0=e-KXt。:S(mg/L);t(h);K[L/(mg·h)]。,dXdt=0,X,Monod。2。2,,R-0.9548～-0.9856。1　Table1.ThefittingofreactiondynamicsReactorFittingequationKX/h-1R1#Y=-0.0807X+3.73880.0807-0.96482#Y=-0.1509X+3.75020.1509-0.97653#Y=-0.2932X+3.70400.2932-0.98564#Y=-0.2911X+3.54370.2911-0.98215#Y=-0.3163X+3.12880.3163-0.95483　　SBR,,、。(1)1,、、,,。(2)、MLSS3～4g/L,COD97.1%,63.1%。(3)MonodSeS0=e-KXt,R-0.9548～-0.9856。:[1]　.[J].,2007,32(6):411-413.[2]　,,.、[J].,2000,22():116-118,112.[3]　BruceE,Rittmann,WayneEL.Simultaneousdenitrificationwithnitrificationinsingle-channeloxidationditches[J].WPCF,1985,57(4):300-308.[4]　PochanaK,KellerJ.Studyoffactoreaffectingsimultaneousnitrifi-cationanddenitrification(SND)[J].WatSciTech,1999,39(6):61-68.[5]　,,.[J].,2002,21(9):527-529.[6]　,,.[J].,2005,11-15.[7]　Moser-EngelerR,UdertKM,WildD,etal.Productsfrompri-marysludgefermentationandtheirsuitabilityfornutrientremoval[J].WatSciTech,1998,38(1):265-273.[8]　LlabresP,PavanP,BattistioniP,etal.Theuseoforganicfrac-tionofmunicipalsolidwastehydrolysisproductsforbiologicalnutri-entremovalinwastewatertreatmentplants[J].WatRes,1999,33(1):214-222.[9]　ElefsiniotisP,WarehamDG,SmithMO.Useofvolatilefattyacidsfromanacid-phasedigesterfordenitrification[J].JournalofBiotechnology,2004,114(3):289-297.[10]　.[M].:,2002.737马秀兰等:不同MLSS对低温低碳氮比污水处理效果的影响吉林农业大学学报JournalofJilinAgriculturalUniversity