不同时期垃圾渗滤液两级UASBAOSBR工艺深度脱氮吴莉娜

第40卷第6期2010年11月　东南大学学报(自然科学版)JOURNALOFSOUTHEASTUNIVERSITY(NaturalScienceEdition)　Vol.40No.6Nov.2010doi:10.3969/j.issn.1001-0505.2010.06.041UASB-A/O-SBR吴莉娜　王淑莹　彭永臻　宋燕杰　刘　牡(,100124):应用两级上流式厌氧污泥床(UASB)-缺氧/好氧(A/O)-序批式反应器(SBR)深度处理早期和晚期垃圾渗滤液.首先在一级UASB(UASB1)中实现反硝化,在二级UASB(UASB2)中通过产甲烷降解有机物,在A/O反应器的好氧区进行NH+4-N的硝化,最后在SBR中去除残余NH+4-N及通过反硝化去除NO-2-N和NO-3-N深度脱氮.试验结果表明:早期渗滤液ρ(COD),ρ(TN)和ρ(NH+4-N)分别为14.8,1.8和1.3mg/mL,最终出水ρ(TN),ρ(NH+4-N),ρ(NO-2-N)和ρ(NO-3-N)分别为28,4,3.4和1.9mg/L,获得了大于98%的TN和NH+4-N去除率.晚期渗滤液ρ(COD)为2.5mg/mL;ρ(TN),ρ(NH+4-N)分别为3.0和2.9mg/mL时,获得99%以上的TN和NH+4-N去除率.最终出水ρ(NH+4-N),ρ(NO-2-N)和ρ(NO-3-N)都小于10mg/L,最终出水ρ(TN)为26～32mg/L.:垃圾渗滤液;脱氮;短程硝化;UASB;A/O;SBR:X703.1　　:A　　:1001-0505(2010)06-1342-06AdvancednitrogenremovalvianitritefromyoungandmaturelandfillleachatebytwostageUASB-A/O-SBRprocessWuLina　WangShuying　PengYongzhen　SongYanjie　LiuMu(KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:Acombinedprocessofatwo-stageup-flowanaerobicsludgeblanket(UASB),ananox-ic-aerobic(A/O)reactorandasequencingbatchreactor(SBR)wasusedtotreatfreshandmaturedlandfillleachate.Theoperationalmodeoftheprocesswasasfollows:denitrificationtookplaceinthefirststageUASB(UASB1);thechemicaloxygendemand(COD)wasmainlyremovedinthesecondstageUASB(UASB2)bymethanogenesis;theammoniumnitrogenwasremovedbypartialnitrificationintheaerobiczoneofA/Oreactor;theresidualammonianitrogenwasremovedinSBR;andthenitriteandnitratewhichwasproducedbythenitrificationwasalsoremovedinSBR.TheexperimentresultsshowthattheCOD,TNandNH+4-Nconcentrationsoffreshleachatearea-bout14.8,1.8and1.3mg/mL,respectively;theTN,NH+4-N,NO-2-NandNO-3-Nconcentra-tionsoffinaleffluentleachateare28,4,3.4and1.9mg/L,respectively;andtheTNandNH+4-Nremovalefficiencyaremorethan98%.MeanwhiletheCOD,TNandNH+4-Nconcentrationsofma-turedleachateare2.5,3.0and2.9mg/mL,respectively;theTNandNH+4-Nremovalefficiencyaremorethan99%;theNH+4-N,NO-2-NandNO-3-Nconcentrationsoffinaleffluentarelessthan10mg/L;theTNconcentrationoffinaleffluentisabout26-32mg/L.Keywords:landfillleachate;nitrogenremoval;partialnitrification;UASB(up-flowanaerobicsludgeblanket);A/O;SBR(sequencingbatchreactor):2010-06-03.　:(1978—),,;(),,,,,[e-mail].:(8091001)、(50978003).:,,,.UASB-A/O-SBR[J].:,2010,40(6):13421347.[doi:10.3969/j.issn.1001-0505.2010.06.041]　　,[1].,5,[2].,;,,,[3].,(UASB),(Anammox),(SBR)[4-6].,,,[7]..,25%,40%[8].,..[9]-,,(NH+4-N),(TN)72%.,90%.,UASB-/(A/O)-SBR,,90%,.1　1.1　,1.1　　　ρ(COD)/(mg·mL-1)7.0～16.02.5～5.0ρ(TN)/(mg·mL-1)1.2～2.02.3～3.1ρ(NH+4-N)/(mg·mL-1)1.0～1.82.0～2.9ρ(NO-x-N)/(mg·L-1)0.5～15.00.5～15.0pH7.0～7.57.5～8.5ρ(PO34-P)/(mg·L-1)9.0～15.03.0～4.0ρ()/(mg·mL-1)8.0～13.03.0～6.01.2　UASBA/OSBR(1).1　UASB-A/O-SBR:A/OUASB(UASB1),(NO-x-N)UASB1.UASB1.,,NO-x-NUASB1.UASB(UASB2).,UASB1,NO-x-NUASB1.NO-x-NUASB2.,A/O,NO-x-N.,UASB1.UASB2;,UASB1UASB2.A/O,.SBR.SBR,,NO-x-N,.UASB1UASB24.258.25L.A/O15L,10,1(A1),(02～010).SBR8L,3L,.1.3　:1460d,3L/d.1200d,260d.,A/OUASB1300%,100%;SBR:※1343第6期吴莉娜,等:不同时期垃圾渗滤液两级UASB-A/O-SBR工艺深度脱氮()※※.(DO)3.0mg/L,,、DO,ORP,pH,60min,6min.,A/OUASB1200%,200%.SBR:※※()※※.UASB1UASB23235℃.A/OSBR30℃.A/OSBR,30d,3.0～5.0mg/mL.UASBA/O:(raw),UASB1A/O(mix),UASB1(U1e),UASB2(U2e),A/O(A1),(02～010).SBR.1.4　COD、、、、[10].DO、(ORP)、pH、(WTWDO330i,WTWORP340i,WTWpH340i).TN/TOC(MultiN/C3000,)TON,TN,TOC,IC,TC.2　2.1　UASB-A/O-SBR2.1.1　COD的变化情况ρ(COD)=14.8mg/mL,ρ(TN)=1.8mg/mL,ρ(NH+4-N)=1.3mg/mL.ρ(C)/ρ(N),8.2,,.2(a),A/O,UASB1ρ(COD),3.5mg/mL.UASB1UASB2COD,.UASB1COD,UASB2COD.UASB1UASB2COD,A/O,A/O.UASB,COD,UASBCOD86.4%.A/Oρ(COD)=1.27mg/mL,A/Oρ(COD),ρ(COD)=1.2mg/mL.2　UASB-A/OCOD2.1.2　N的变化情况-.A/O.UASB1A/OSBR.2(b),,1raw;2mix;3U1e;4U2e;5A1;602;703;805;907;10010.A/O,UASB1ρ(NH+4-N)=0.35mg/mL.,A/Oρ(NH+4-N)=160.8mg/L.A/O7(07),ρ(NH+4-N)=15mg/L,.,NO-2-NNO-3-NUASB1,UASB1ρ(NO-2-N)ρ(NO-3-N)1mg/L.,A/Oρ(NO-2-N),ρ(NO-2-N)147mg/L.A/Oρ(NO-3-N)9mg/L.A/O94.8%,1344东南大学学报(自然科学版)　　　　　　　　　　　　　第40卷.,TN(TIN).,ρ(NH+4-N),ρ(TN)ρ(TIN),A/O(SND).A/O,A/O(010)ρ(NH+4-N),SBRA/ONO-2-NNO-3-N.A/OCOD,SBRρ(COD)=500mg/L,3.9h,SBRρ(NO-2-N)ρ(NO-3-N)3.41.9mg/L.TNTIN,SBRρ(TN)=95mg/L,ρ(TN)28mg/L.100%,TN98.5%.ρ(TN)ρ(NH+4-N)2008[11].3　SBR2.2　UASB-A/O-SBRρ(COD)=2.5mg/mL,ρ(TN)=3.0mg/mL,ρ(NH+4-N)=2.9mg/mL,ρ(C)/ρ(N)1.ρ(C)/ρ(N),,,.,A/OUASB.A/O,2.1A/O.,,.SBR,NH+4-N.,.,2A/O.,,,A/O.,A/OSBR.2.2.1　A/O反应器缺氧段不投加碳源ρ(C)/ρ(N),,.4,UASBρ(COD)1.9mg/mL,.COD,,.,UASB1.4,UASB1ρ(NO-2-N)ρ(NO-3-N)16016mg/L.UASB2.NO-2-NNO-3-NA/O,.A/O2(1).A/Oρ(NH+4-N),,.,A/O.4　1UASB-A/OA/Oρ(NH+4-N),ρ(NO-2-N),ρ(NO-3-N),A/Oρ(TN)620mg/L.TNTIN,TINTN.A/O1345第6期吴莉娜,等:不同时期垃圾渗滤液两级UASB-A/O-SBR工艺深度脱氮,TNTIN80%～85%;89%;A/O90%.A/OSBR.SBR,.5,32h,ρ(NH+4-N)8.72mg/L,.ρ(COD)=2.0mg/mL.24h,ρ(NO-2-N)ρ(NO-3-N)103.6mg/L,ρ(TN)32.4mg/L.,ρ(TN)=3.0mg/mL,ρ(NH+4-N)=2.9mg/mL,TNNH+4-N99%99.7%.,[11]ρ(TN)ρ(NH+4-N),.5　1SBR2.2.2　A/O反应器缺氧段投加碳源A/O,,ρ(COD)=800mg/L.6,ρ(COD)=2.5mg/mL,A/OUASB1,A/O,UASB1ρ(COD)2.95mg/mL,UASB1ρ(COD).6,A/O,A/Oρ(NH+4-N)=270mg/L.A/Oρ(NH+4-N),A/O(010)ρ(NH+4-N)=15mg/L.A/O,UASBA/O.,A/O,10,NO-2-N77.3%.6　2UASB-A/O　ρ(TN),A/OSBR.SBRρ(COD)=3.0mg/mLNO-x-N.7,48h,ρ(NO-2-N)ρ(NO-3-N)63.58mg/L,ρ(T