SBR处理渗滤液深度脱氮的影响因素研究王凯

2016,36(11)3287~3294ChinaEnvironmentalScienceSBR1,2,2*,2,1,1,1*(1.,,1001242.,250101),SBR.,.,SBR,COD4000mg/L,1000mg/L,1100mg/L,,COD500mg/L,5mg/L,40mg/L,COD85%99%95%.,PHA..,4,.SBRPHAX703A10006923(2016)11328708TheinfluentialfactorsoflandfillleachateadvancednitrogenremovalbySBR.WANGKai1,2,WUDao-ji2*,CHENJu-xin2,MIAOLei1,PENGYong-zhen1,WANGShu-ying1*(1.KeyLaboratoryofBeijingforQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China2.ShandongJianzhuUniversity,Jinan250101,China).ChinaEnvironmentalScience,2016,36(11)3287~3294AbstractSincedenitrificationoflandfillleachatewasachallengingproblem,thisstudymodifiedSBRtoimprovetheefficiencyofnitrogenremoval.Theeffectsofseveraloperationparameterswereinvestigated,includingoperationmode,dissolvedoxygen,overaeration,andcarbonnitrogenratiooftheleachate.TheresultsdemonstratedthatthemodifiedSBRcouldreducetheCOD,ammonia-nitrogen,andTKNoftheleachatefromabout4000mg/L,1000mg/L,and1100mg/Ltolessthan500mg/L,5mg/Land40mg/L,respectively,withoutextracarbonsource,meaningthattheremovalratescouldreachupto85%,99%,and95%,respectively.Besides,itwasfoundthatthePHAcontentindenitrifyingbacteriawasthekeyfactoraffectingthedenitrificationefficiency.Nitrogenremovalefficiencywouldbeimprovedbyhighdissolvedoxygen,anaerobicmixingbeforeaerationandlessoveraeration.Additionally,theadvanceddenitrificationwouldbeachievediftheleachatecarbonnitrogenratiowasmorethanfour.KeywordslandfillleachateSBRendogenousdenitrificationadvancednitrogenremovalPHA,,[1],.,,[215],,..,,.[16],,,.,,[1718].,,PHA[19].SBR(51178007)*,,,[e-mail];,,[e-mail]328836,,,,[2021].SBR,,,,.,.11.14℃.1.,MLSS3500mg/L,SVI56mL/g.1Table1ThecharacteristicsoftheleachatepH7.8~8.38.1NH4+N(mg/L)850~1050960TN(mg/L)920~11601020NOxN(mg/L)0.2~0.51COD(mg/L)3790~41203980BOD5(mg/L)1120~14501260(mg/L)7820~1080089001.2SBRSBR,20cm,60cm,10L,.SBR25.SBR.SBR1,.1.5~1.8mg/L.SBR,.SBR,70d,.33L.,.,60min,NH4+N,NO2N,NO3N,TNCOD,PHA.1SBRFig.1TheoperationoftheSBR1.3COD[22];BOD5GB748887[23]5,;;;N(1);;pHDOORPWTWpHDO;.PHAZeng[24].22.1SBR2.0~67d,68~163d.,COD400~500mg/L,85%.COD,.,SBR10%,,.,10h,,().,,11SBR328925%,COD,.23.01020304050607080901001101201301401501600102030408809009209409609801000(mg/L)(d)012345678910(mg/L)510152025303540(%)2SBRFig.2VariationofnitrogeninmodifiedSBR010203040506070809010011012013014015016081012141618202224262830(%)(h)(d)5060708090100(%)3SBRFig.3VariationoftotalnitrogenremoverateandcycleinSBR210h.23,,,,,40mg/L,60%.,,.41d,(14h),95%.42d,,10%,.67d,12h,0.99mgN/(h·gvss).,,68d.32903615%.,COD50%,.12h17h.,,16h.50%,30%,,.,,25%,22h,1.48mgN/(h·gvSS)10%0.99mgN/(h·gvSS)30%.2.2SBR,.,.2,,.,.,.,.PHA,.,SBR,,,PHA.70d,PHA.(1mg/L),PHA.06012018024030036042048054060066072078001020304050607080NH4+-N()NO2--N()NH4+-N()NO2--N()NH4+-N()NO2--N()(mg/L)(min)051015202530354045505560PHA()PHA()PHA()PHA(mgCOD/gvSS)4SBRFig.4theeffectofstorageofcarboninsludgeandnitrogenremoveratebythetimeofnitrification2.2.1SBR,,,,,.,(1.0~1.5mg/L1.5~1.8mg/L2.5~3.0mg/L)11SBR3291.4.4,,,,.,PHA45mgCOD/gvss,.,PHA.,,PHA.SND,PHA,,13.5h.,,11.5h,0.5h,4%.,,1.,1.5~1.8mg/L,,.2.2.2SBRSBR,.SBR,.,,.,.,.(03060min),.5.0601201802403003604204805406006607207800102030405060708090100110(min)510152025303540455055PHA(mgCOD/gvSS)NH4+-N()NO2--N()NH4+-N(30min)NO2--N(30min)NH4+-N(60min)NO2--N(60min)(mg/L)PHA()PHA(30min)PHA(60min)5SBRFig.5theeffectofstorageofcarboninsludgeandnitrogenremoveratebyanaerobicstirbeforenitrification5,0.5h30min,,0.5h,,PHA,,,.PHA.,PHA,30min,PHA40%,.PHA,PHA,3292362h.,PHA,,.5,60min30min,,PHA,,,30min1h,.,,.30min,,30min.2.2.3SBR,pHORP,,.,.,,.,,,,.(30,60min).6.0120240360480600720840960108001020304050607080PHA(mgCOD/gVSS)(mg/L)NH4+-N()NO2--N()NH4+-N(30min)NO2--N(30min)NH4+-N(60min)NO2--N(60min)(min)051015202530354045505560PHA()PHA(30min)PHA(60min)6SBRFig.6theeffectofstorageofcarboninsludgeandnitrogenremoveratebyoveraeration6,,3PHA.,2PHA,,PHA.PHA,2.,1h50%,18h.,,.2.2.4SBR,,.SBR,4:1.700mg/L,6:14:13:1.70mg/L,7.7,6:1,,,,11SBR3293PHA4:170mgCOD/gvss85mgCOD/gvss.,,2.2h.,,,,.,,,PHA4:150mgCOD/gvss60mgCOD/gvss.PHA9.5h,4:117.4%.,.0510152025301020304050607080901006:13:1PHA(endofanaerobicstage)PHA(endofoxicstage)PHA(endofanoxicstage)PHA(mg/L)(d)4:1051015202530(h)0.00.51.01.52.02.5(h)7SBRFig.7theeffectofstorageofcarboninsludgeandnitrogenremoveratebycarbonnitrogenratio3:1,PHA55mgCOD/gvss.,1.8h.3:1,.,,.3:1,COD1600mg/L,COD1800mg/L,0.89.,,3:1,.4:1,COD2300mg/L,COD1.27,.,.4:1,.4:1,,,,.PHA,,PHA.,.33.1SBR,,329436.COD4000mg/L,1000mg/L,1100mg/L,COD500540mg/L,85%99%95%.3.2,40d.,,SBR1.48mgN/(h·gvss).3.3.,PHA.,.4:1,.[1]RenouS,GivaudanJG,PoulainS,etal.Landfillleachatetreatment:reviewandopportunity[J].JournalofHazardousMaterials,2008,150:468493.[2]AhmedFN,LanCQ.Treatmentoflandfillleachateusingmembranebioreactors:Areview[J].Desalination,2012,287:4154.[3]IsmailT,TarekD,MejdiS,etal.CascadebioreactorwithsubmergedbiofilmforaerobictreatmentofTunisianlandfillleachate[J].BioresourceTechnology,2011,102:77007706.[4]KlimiukE,KulikowskaD.OrganicsremovalfromlandfillleachateandactivatedsludgeproductioninS