高级氧化技术处理垃圾渗滤液的研究进展谭磊

34420094ENVIRONMENTALSCIENCEANDMANAGEMENTVol.34No.4Apr.2009:2008-11-20:(ZS021-A25-021-G):(1979-),,,,。:1674-6139(2009)04-0087-07谭磊1,王宝山2(1.,730070;2.,730070)　:垃圾渗滤液是一种成分复杂、有机物、氨氮浓度高的难处理废水,介绍了高级氧化技术在垃圾渗滤液处理中的研究与应用现状。主要介绍了臭氧氧化、光催化氧化、Fenton试剂、电氧化以及湿式氧化在处理垃圾渗滤液中的应用,分析了高级氧化技术处理垃圾渗滤液的原理,对国内外各种氧化技术在垃圾渗滤液处理中的应用进行了总结,并探讨了它们的优缺点。最后,提出了当前应用高级氧化技术处理垃圾渗滤液所存在的问题和发展方向。:垃圾渗滤液;高级氧化技术;催化氧化:X703.1:AAdvancedOxidationTechnologyforDegradationLandfillLeachate:ReviewandOpportunityTanLei1,WangBaoshan2(1.SchoolofMathematicsPhysicsSoftwareEngineering,LanzhouJiaoTongUniversity,Lanzhou730070,China;2.SchoolofEnvironmentalandMunicipalEngineering,LanzhouJiaoTongUniversity,Lanzhou730070,China)Abstract:Landfillleachateisbiorefractorywastewaterwhichhasrecalcitrantcompounds,complexcomponentsandhighcon-centrationoforganiccompoundsandNH3-N.Thisarticlereviewsthetechnicalapplicabilityandthetreatmentperformanceofva-riousadvancedoxidationtechnologies(AOTs)forlandfillleachate.AparticularfocusisgiventoOzonation,Photocatalysisoxida-tion,Fentonoxidation,Electro-oxidation,andWetairoxidation.Thetheoremtreatmenttolandfillleachateisanalyzed,andtheapplicationofthemdealingwithlandfillleachateindomesticandforeignissummarized,thentheiradvantagesandlimitationsinap-plicationareevaluated.TheproblemanddevelopmentdirectionforAOTsapplicationareproposedintheend.Keywords:landfillleachate;advancedoxidationtechnology(AOT);catalyticoxidation　　,[1]。,。2000,2.18,57%;1.6,80%。,。,、、、、。COD、BOD、BOD/COD、pH、SS、NH3-N、。,,1。,。,,。70,[2]。“”,,,。,,pH,。,NH3-N,。“”,。(AOT)“”。,AOT。AOT·87·34420094·Vol.34No.4Apr.2009(·OH),(·OH)2.80V,F(2)。(·OH),CO2H2O,,,。1　[1]　“”　“”　“”()pHCOD(mg/L)BOD5/CODNH3-N(mg/L)56.5100000.3500～2000VFA80%5～106.5～7.54000～100000.1～0.32000～3000VFA+5%～30%107.540000.13000～50002　F·OHH2O23.062.802.422.081.781.491.361.271.23　　,AOT、、Fenton、、。。1　。(Eo)2.08V,。pH。,,,。,:O3+H2O※O2+2·OH(1)·OH,,106～109M-1s-1。·OH,。。,,·OH,。(pH9),·OH:·OH+P※(2)P:,HCO-3CO2-3。:·OH+CO2-3※OH-+CO·-3(3)　k=4.2×108M-1s-1·OH+HCO-3※OH-+HCO·3(4)　k=1.5×107M-1s-1(3)、(4),。(8pH9),·O-2HO2·,·OH,,pH,(5)～(11):O3+OH-※·O-2+HO2·(5)k1=70M-1s-1O3+·O-2※·O-13+O2(6)k2=1.6×109M-1s-1·O-3※·OH+O2(7)k3=1.1×108M-1s-1·OH+O3※HO2·+O2※HO4·(8)k4=2.0×109M-1s-1HO4·※HO2·+O2(9)k5=2.8×104s-1HO2·※·O-2+H+(10)pka=4.8HO4·+HO4·※H2O2+2O3(11)M.F.Wang,3.6g/L,COD=1090mg/L,NH3-N=455mg/L,COD、NH3-N70%、67%[3]。J.J.Wu,COD=6500mg/L,B/C0.1,1.2g/L,pH8.1,COD15%,B/C0.5[4]。·88·34420094·Vol.34No.4Apr.2009,COD,。,,。,,。。,,,。2　(UV),。·OH,。(UV)(12)、(13):+hv※(12)+hv※CO2+H2O(13)(UV),O3、H2O2,(UV),·OH,。2.1　UV/O3UV/O3,UV254nm,UVO3,,(14)～(16):O3+H2O+hv※H2O2+O2(14)H2O2+hv※2·OH(15)O3+H2O+hv※2·OH+O2(16)UV,,,。UV/O3。UV/O3(pH=8～9),Ince[5]。pH=2,COD=1280mg/L,COD54%;pH=7.8,COD=26000mg/L,COD63%[6]。UV/O3(THM),。,O3。,,UV,UVO3,,。2.2　UV/H2O2H2O2(E0)1.78V,,O3(E0)。UV,H2O2(E0)·OH,。(17)～(21)::H2O2+hv※2·OH(17)H2O2※H2O+12O2:·OH+H2O2※HO2+H2O(18)k1=2.7×107M-1s-1HO2·+H2O2※·OH+H2O+O2(19)k2=0.5M-1s-1:·OH+HO2·※H2O+O2(20)k3=1010M-1s-1·OH+·OH※H2O2(21)UV/H2O2,,,pH,Mǜller(pH=3～4)[7]。,。Steensen[8]UV2×105KW/m3,COD1200mg/L,90%;Ince[5]UV675KW/m3,COD1280mg/L,COD59%。UV/H2O2UV/O3,,H2O2·OH。UV/H2O2,。,H2O2·OH,H2O2,H2O2,。Ince[5]UV/O3/H2O2UV/O3UV/H2O2。COD1280mg/L,UV/O3/H2O2COD89%,UV/O3UV/H2O254%59%。,UV/O3/H2O2。,。,UV,,,。UV,UV,。·89·34420094·Vol.34No.4Apr.20093　FentonH2O2(E0)1.78V,,,,,H2O2。H2O2(II),H2O2,(E0)·OH[9],(22)～(31)::H2O2+Fe2+※Fe3++OH-+·OH(22)k1=70M-1s-1H2O2+Fe3+※Fe(OOH)2++H+Fe2++HO2·+H+(23)OH-+Fe3+※Fe(OH)2+Fe2++·OH(24):H2O2+·OH※HO2·+H2O(25)k2=3.3×107M-1s-1HO2·+H2O2※OH+H2O+O2(26)HO2·+HO-2※·OH+HO-+O2(27):Fe2++·OH※Fe3++OH-(28)k3=3.2×108M-1s-1HO2·+Fe3+※Fe2++H++O2(29)·OH+HO2·※H2O+O2(30)·OH+·OH※H2O2(31)Fenton,Fe(Ⅱ)Fe(Ⅲ),H2O2Fe(Ⅱ)·OH,。Fe(Ⅱ),H2O2·OH,。Fenton:;;CO2H2O。FentonFe(Ⅱ)H2O2,,pH。,Fenton。[10]Fenton,COD=1000mg/L,13℃37℃,COD90%94%。,Fe(Ⅱ)H2O2,·OH。H2O2,,H2O2,H2O2·OH,,H2O2。(22)～(24),Fe(II)·OH,Fe(Ⅱ),H2O2Fe(II)2.0～3.0,。pHH2O2,·OH。pH=2.5～3FentonpH,pH4,H2O2,·OH,pHFe(III),Fe,。pH,Fe(OOH)2+,H2O2,·OH,pH2.5。Fenton,,。Kim[11]Fenton,H2O21.5g/L,Fe(Ⅱ)120mg/L,COD=2000mg/L,B/C0.05,COD69%,B/C0.58;Lopez[12]Fenton,H2O21g/L,Fe(II)830mg/L,COD=10540mg/L,B/C=0.2,COD60%,B/C0.5。FentonFe(II),,。Fenton·OH,。Kim[13]UVFenton,H2O21.15g/L,Fe(Ⅱ)56mg/L,UV500～1000W,COD=1150mg/L,COD70%;[14]Fenton,H2O20.34mol/L,Fe(II)0.028g/L,COD=5000mg/L,2.5A,COD87.2%。Fenton,,。H2O2,。,FentonH2O2,,。4　。,,,·90·34420094·Vol.34No.4Apr.2009;,,,,。,1。1　()　　,;,、H2O2、,·OH,。,,:。,,(MOx+1)(MOx(OH)z),。::R+MOX+1※RO+MOx(32):R+MOX(·OH)z※CO2+zH++ze+MOx(33)R:　z:;CO2。,。Chiang[15],,::2Cl-※Cl2+2e-(34)6HOCl+3H2O※2ClO-3+4Cl-+12H++1.5O2+6e-(35)2H2O※O2+4H++4e-(36):Cl2+H2O※HClO+H++Cl-(37)HClO※H++Cl-(38):2H2O+2e-※2OH-+H2(39)OCl-+H2O+2e-※Cl-+2OH-(40)(37)、(38)HClO,。、、Cl-(3)。3　[2],,Fe、Al,。pH。,COD、NH3-N、。Cl-Cl-,。。　　,COD90%,NH3-N100%。、Fenton、、。ChiangCODNH3-N,Moraes[16]COD,NH3-N。,[17],NH3-N,30%COD,4h,COD90%,ChiangNH3-NCOD。Cossu[18]NH3-N,COD,Marinci,NH3-N。CODNH3-N,,,,。,,,,,·91·34420094·Vol.34No.4Apr.2009,。5　,,100℃～350℃,5bar～200bar。COD,,、,、、,pH、、NH3-N。。COD80～99%,ShengliCao[19],Ru/,COD=8000mg/L,NH3-N=1000mg/L,=1000mg/L,COD89%,,NH3-N62%,99.6%。[20]COD,270℃、9MPa,40min～60min,COD99%,CODcr150mg/L,0.5mg/L,。COD10,000