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2008,28(3)225~228ChinaEnvironmentalScience1,2,1,1,3,1,1*(1.,1000222.,1000383.,150090),UASB(UASB1+UASB2)A/O,UASB1(1)A/O(2)2.,300%,299%,12TN21%.2(IC)pH,1,ICpH,75%~95%NO2N..X703.1A10006923(2008)03022504Highlyeffectivebiologicalnitrogenremovalfromhighammonialandfillleachate.ZHANGShu-jun1,2,WANGShu-ying1,MAOXin-wei1,HANXiao-yu3,ZENGWei1,PENGYong-zhen1*(1.SchoolofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022,China2.BeijingDrainageGroupCompanyLimited,Beijing100038,China3.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China).ChinaEnvironmentalScience,2008,28(3)225~228AbatractAtwo-stageUASB(UASB1+UASB2)-A/Osystemwasinvestigatedtoimprovenitrogenremovalefficiencyfromthelandfillleachatewithhigh-concentrationammonia.Twodifferentoperationalpatterns:denitrificationoccurringfirstlyintheUASB1(technique1)anddenitrificationonlyinA/Oanoxiczone(technique2)werecontrastivelystudied.Undertheconditionofrecirculationratio300%,ammonianitrificationefficiencyof2kindstechniquewasabout99%,butTNremovalefficiencyoftechnique1was21%higherthantechnique2.Thedifferenceofvariationruleofinorganiccarbon(IC)andpHvalueof2kindsoftechnologywasgreat.Technique1owingtoutilizingcompletelyrawwatercarbonsource,thehighlyeffectivedenitrificationwasobtained,ampleICandhigherpHvalueinsystemwasmaintained,andnitritationof75%~95%nitriteaccumulationefficiencywasrealized.Ableornoteffectivelyutilizingorganiccarbonsourcewasthebasicreasonofproducingvariationofnitrogenremoval.Keywordshigh-concentrationammonialandfillleachatebiologicalnitrogenremovalanaerobicpre-denitrification,+,,A/O[15].,.,,C/N,.,,A/O,,.11.1,(mg/L):COD7000~25000;BOD53500~14000;20070709;(2006BAC19B03);*,,pyz@bjut.edu.cn22628NH4+N1250~1950;TN1600~2150;SS400~850;8000~11000;TP9~15.pH7.2~7.9.3.1.21,UASBA/O.UASB1UASB24.25,8.25L.A/O15L,10,1,.UASB,30,35,A/O20~32.:Raw;U1iUASB1;U1eUASB1;U2eUASB2;Ano.A/O;O2~O10.UASB1A/OUASB2a1b2UASB1A/OUASB2112Fig.1Schematicdiagramofprocess1orprocess22.1(1,1a)UASB1(1~30d).3.5L/d,300%UASB1,UASB1UASB2A/O14L/d.A/O100%.2(2,1b)A/O(31~60d).3.5L/d,A/O300%A/O,100%.2,A/O,(61~80d).1.3CODCOD();NH4+N;NO2NN(1);NO3N;DOpH(WTWDO330i,WTWpH330i);BOD5OxiTop®Control;TCTOC(IC)TNmultiN/C3000TOC(AnalytikJenaAG).22.1212Table1Contrastofremovalefficiencyoftwooperationalmodes12TC(%)79±879±6TOC(%)86±985±10IC(%)30±560±4UASBpH8.2~8.57.9~8.2COD(%)90±385±5BOD5(%)99.5±0.199.5±0.1NH4+N(%)99±0.499±0.4NO2N(%)75~9515~47TN(mg/L)1833±2281944±108TN(mg/L)227±38603±80TN(%)88±367±41,2TC,TOC,BOD5,ICpH.23227,99%,TN21%,A/OTN2.4.2.22TOC2,1,TNTOCUASB1,A/O,88%.2UASB1TOC,TN,A/O,67%.05001000150020002500300035004000RawU1eU2eAno.O2O3O5O7O10TOC,TN(mg/L)TOC2TN2TOC1TN122TN,TOCFig.2VariationofTNandTOCundertwoprocesses2,TOC/TN2.6,1,NOxN(NO2NNO3N)100%.UASB2TOC/TN2.1,NOxN,A/O97%,TN88%.2UASB,UASB2TOC/TN0.8,,TN67%.2TOC/TNTable2TheeffectofTOC/TNonnitrogenremovalefficiencyTOC/TNUASB2TOC(mg/L)TN(%)TN(mg/L)UASB212.6±0.202.1±0.211071±7788±3227±3821.7±0.240.8±0.181238±9067±4603±801.6±0.221.4±0.24750±7489±3218±282,2,1,TOC/TN2.,UASB199%,UASB2TOC/TN1.4,2UASB2.A/O97%,TN89%.2.321,ICpH,(FA),[611].1,1NO2N75%~95%,.2NO2N15%~47%.,40%[1214].2.4ICpH02004006008001000RawU1eU2eAno.O3O5O7O10IC(mg/L)7.88.08.28.48.68.89.09.2pHICpH(a)1040080012001600RawU1eU2eAno.O3O5O7O10IC(mg/L)7.47.67.88.08.28.48.6pHICpH(b)23ICpHFig.3CompareofICorpHvariation3(a),1,,IC790mg/L661mg/L,pH8.018.18.UASB122828,IC,pH8.61.UASB2,,UASB2pH8.2~8.5,TOCCO2IC,IC878mg/L.,,UASB2pH.A/O,,IC,IC676mg/L,pH9.01.,IC,,ICpH580mg/L8.80.2[3(b)],UASB,IC.A/O,IC,IC388mg/L.pH,7.88.5,8.13.1IC27%.2,IC73%.33.11,C/N,A/O,TN88%,TN227mg/L.2A/O,,,,TN67%,TN603mg/L.3.2UASB2TOCIC,1IC27%.2IC73%.3.31,IC,pHFA.1NO2N75%~95%,2NO2N15%~47%.[1],,,.A2/O[J].,2001,17(11):1316.[2],,,.A()B(A/O)[J].,1996,22(5):1618.[3]KettunenRH,HoilijokiTH,RintalaJA.Anaerobicandsequentialanaerobic-aerobictreatmentsofmunicipallandfillleachateatlowtemperatures[J].Biotechnol.,1996,58:3140.[4],./SBR/[J].,2004,30(3):176178.[5],,,.UASBF-SBR[J].,2003,19(4):5960.[6]GorskaSJ,CichonA,MikschK.Nitrogenremovalfromwastewaterwithhighammonianitrogenconcentrationviashorternitrificationanddenitrification[J].WaterSci.Technol.,1997,36:7378.[7]JenicekP,SvehlaP,ZabranskaM.Factorsaffectingnitrogenremovalbynitritation/denitritation[J].WaterSci.Technol.,2004,49:7379.[8]RuizG,JeisonD,ChamyR.Nitrificationwithhighnitriteaccumulationforthetreatmentofwastewaterwithhighammoniaconcentration[J].WaterRes.,2003,37(6):13711377.[9]WettB,RauchW.Theroleofinorganiccarbonlimitationinbiologicalnitrogenremovalofextremelyammoniaconcentratedwastewater[J].WaterRes.,2003,37(5):11001110.[10]KimDJ,LeeDI,KellerJ.EffectoftemperatureandfreeammoniaonnitrificationandnitriteaccumulationinlandfillleachateandanalysisofitsnitrifyingbacterialcommunitybyFISH[J].BioresourceTechnology,2006,97:459468.[11]FuxC,VeltenS,CarozziV,etal.Efficientandstablenitritationanddenitritationofammonium-richsludgedewateringliquorusinganSBRwithcontinuousloading[J].WaterRes.,2006,40(14):27652775.[12]HellingaC,SchellenAAJC,MulderJW,etal.TheSHARONprocess:aninnovativem