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、[1-2]。TN、TP[3]。、、[4-6]。CDPR-BAFDPB。BAFSRTNO3--N。CDPR-BAF。11.11。、、BAF、、、。DPBBAFNO3--NPHBβ-。、、、、15、10、21、3、15L。BAF2050mm150mm3～4mm。、。0.3。1.21CDPR-BAFFig.1FlowchartofCDPR-BAFprocess CDPR-BAF400045、、CDPR-BAF。BAF。COD、NH4+-N、TNTP90.5%、89%、81%92.3%。N/P75.3%。CDPR-BAFX703A1000-3770(2010)05-0074-0042010-03-05“”2007DFA906601984－E-mailhenanlidan@163.com36520105TECHNOLOGYOFWATERTREATMENTVol.36No.5May,201074DOI:10.16796/j.cnki.1000-3770.2010.05.020、、NH4Cl、KH2PO4、Na2CO3COD185～386mg·L-1NH4+-N18.5～40mg·L-1TN20.8～44.5mg·L-1TP5.3～10.6mg·L-1pH7～8。1.3CODHACH-CODNO3--NNH4+-NTN-PO43--PTP-SS、MLSS、MLVSS。1.4BAF。2。1／。38h1h2.5h3.5h1h。、。12//38h1h2h3.5h0.5h1h100mg·L-1、。BAF4L·h-110d6L·h-11COD、NH4+-N90%。BAF。22.12.1.1CODCOD2。2CODCOD185～386mg·L-1COD≤55mg·L-1COD90.5%。2CODCODCOD288.9mg·L-1103.8mg·L-1CODPHB。BAFCODCOD0.3COD。2.1.2NH4+-NNH4+-N3。3NH4+-N18.5～40mg·L-1NH4+-N5mg·L-189%。3NH4+-NBAFNH4+-N0mg·L-195%BAFNH4+-N。NH4+-N、NH4+-N。2.1.3TPTP4TP0102030405060050100150200250300350400 dCOD/mg L 01020304050607080901002CODFig.2ChangeofCODremovalrate0102030405060051015202530354045 d(NH -N)/mg L 01020304050607080901003NH4+-NFig.3ChangeofNH4+-NremovalrateCDPR-BAF755.3～10.6mg·L-1TP1mg·L-192%。TP19.29～30.98mg·L-1TP。。2.25。5TNNH4+-NBAFNH4+-NNO3--NTNNH4+-N。TN、NO3--NTP。2.32.3.1[7]TP。TPTP1TPTP2MLSSTP1-TP2MLSS。DPB3.8%～5.2%。2.3.2DPB。MLSS3.8g·L-12h21KH2PO435mg·L-11DO3mg·L-13.5h6。6PP2。2h4.26mg·g-1·h-13.21mg·g-1·h-1Wachtmeister[8]DPB75.3%。。3CDPR-BAF010203040506005101520253035 d(TP)/mg L 60657075808590951004TPFig.4ChangeofTPremovalrate051015202530354045/mgL BAF 5NH4+-N、NO3--N、TNTPFig.5VariationofNH4+-N、NO3--N、TNandTPremovalindifferentreactorstage0123456051015202530354045h (PO -P)/mg L 6、Fig.6Phosphorusuptakeunderaerobicandanoxicconditions36576REMEDIATIONOFNITRATE-CONTAMINATEDGROUNDWATERBYTHECOMBINATIONOFIRONANDACTIVATEDCARBONHuangGuoxin,LiuFei,QinXiaopeng,XinXiaohua,JinAifangBeijingKeyLaboratoryofWaterResources&EnvironmentalEngineering,ChinaUniversityofGeosciencesBeijing,Beijing100083,ChinaAbstract:Accordingtonitratecontaminationingroundwater,thecombinationofwasteironchipsandgranularactivatedcarbonparticleswasproposed.Batchexperimentswereconductedtoremediatethesimulatednitrate-contaminatedgroundwater.TheresultsshowthattheresidualNO3-is34.23～35.21mg·L-1attheironandactivatedcarbontotalamountof8.0000～10.0000gwhichisconsideredastheoptimumvalue.Particlesizehasn'tanob-viousimpactonNO3-removalefficiency.ThepHvalueincreasesfromtheinitial6.42tothefinal7.09withreactiontimefrom1hto5h.IronmixedwithactivatedcarboncankeeppHvaluesteadyatneutralcondition.OnlyspecialmetaloxidescanpromoteNO3-removalatweakacidiccondition.AllofthefiveoxidesresultintheincreaseofNO2-andNH4+inwaterphase.Theremediationmechanismsrelatedtothemixtureofironalliedwithactivatedcarbonincludechemicalreduction,galvaniccellreaction,coagulation＆(co-)precipitation,electrophoreticaccumulationandadsorption.Thisapproachisacost-effectiveonetoremediatenitrate-contaminatedgroundwater.Keywords:ironchips;granularactivatedcarbon;nitrate;groundwater;remediationmechanisms;cost-effectiveCOD185～386mg·L-1、NH4+-N18.5～40mg·L-1、TN20.8～44.5mg·L-1、TP5.3～10.6mg·L-1COD≤55mg·L-1ρ(NH4+-N)≤5mg·L-1ρ(TN)≤12mg·L-1ρ(TP)≤1mg·L-1COD、NH4+-N、TN、TP90.5%、89%、81%92.3%COD。TN、NO3--NTPN/PNO3--N。、NO3--NO2。[1],,,.[J].,2008,29(2):310-315.[2],,,.[J].,2005,14(5):605-610.[3],,.[J].,2009,25(01):206-210.[4],.[J].,2008,34(3):7-10.[5],,,.A2/O[J].,2008,2(6):752-756.[6],,,.A2N[J].,2009,25(7):26-29.[7].[M].:,2001.[8]WACHTMEISTERA,KUBAT,VANLOOSDRECHTMCM,etal.Asludgecharacterizationforaerobicanddenitrifyingphosphorusremovingsludge[J].WatRes.,1997,31(3):471-478.STUDYONNITROGENANDPHOSPHORUSREMOVALANDCHARACTERIZATIONOFSLUDGEINCDPR-BAFPROCESSCRLiDan,WangTao,LiWeimin,XiaoHaiwen（KeylabratoryoftheThreeGorgesReservoirRegion'sEco-Enviroment,MinitryofEducation,ChongqingUniversity,Chongqing400045,China）Abstract:Inordertosolvetheproblemsofcarboninsufficiency，bacteriacompetitiondifficultytocontrolSRTinthetraditionalbiologicalnitrogenandphosphorusremovalprocess,CDPR-BAFwasputforward.Thelaboratory-scalesystemcanobtaingooddenitrifyingphosphorousremovalabilitywithoutextranitrateadditionbysettingtheBAFasanitrificationsegment．Thetestresultshowsthattheprocesshasremovalrateof90.5%、89%、81%and92.3%respectivelyforCOD,NH4+-N,TNandTP，withstabilityintreatmenteffect.N/Pisakeyfactorfordenitrifyingphosphorusremovalinanoxicstage,Theproportionofdenitrifyingphosphateaccumulatingorganisms(DPB)is75.3%insteadyrun-timeofsystem.Keywords：sewagetreatment;CDPR-BAFprocess;denitrification;phosphorusremoval≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤73CDPR-BAF77