CuFeCoNiCeAl2O3催化湿式氧化城市污泥

200826Cu-Fe-Co-N-iCe/CAl2O3*李亮叶舒帆胡筱敏(,110004)制备催化剂Cu-Fe-Co-N-iCe/CAl2O3,开展污泥催化湿式氧化处理的实验研究在温度180e搅拌转速600r/min常温当量氧分压110MPa催化剂添加量810g/L的最佳工艺条件下,反应90min的污泥COD去除率可达7216%,Cu2+溶出量为1912mg/L;反应30min,污泥固相中9515%的有机物消解,30min沉降比从9414%降至814%,抽虑后含水率可下降至5912%,体积减量9414%此外,污泥的催化湿式氧化处理工艺具有一定的/资源化0前景催化湿式氧化城市污泥COD去除率Cu2+溶出量CATALYTICWETAIROXIDATION(CWAO)OFMUNICIPALSLUDGEBYCATALYSTCu-Fe-Co-N-iCe/CAl2O3LiLiangYeShufanHuXiaomin(SchoolofResourcesandCivilEngineering,NortheasternUniversityShenyang110004)AbstractThecatalystCu-Fe-Co-N-iCe/CAl2O3hasbeenpreparedtoresearchthetechnicsofsludgeCWAOtreatment1TheresultsshowedthattheCODremovalrateofsludgehadachieved7216%withtheCu2+leac-hingquantityof1912mg/Lafter90minreactionundertheoptimalconditionsasfollows,reactiontemperature:180e,stirringrate:400r/min,catalyst:810g/L,roomtemperatureequivalentoxygenpressure:110MPa.About9515%organiccompoundsinthesolidphaseofsludgehavebeendigestedby30minreactionundertheoptimalconditionswhichmadethe30minsedimentratiodecreaseto814%from9414%1Furthermore,thewa-tercontentofsludgecoulddecreaseto5912%,inanotherword;thevolumeofsludgecouldreduce9414%ifthevacuumfiltrationhasbeenapplied1Withal,theCWAOtreatmenttechnicsofsludgehaveheldthecharac-teristicofreclamation1KeywordscatalyticwetairoxidationmunicipalsludgeCODremovalrateCu2+leachingquantity*(1053095-4-05)0,()1800t/a,10%~15%,,[1-2];[3-5];[6];[7-9];[10-12],Cu-Fe-Co-N-iCe/CAl2O3,,,/01111实验材料,,pH617,9717%,COD16000~18000mg/L,NH3-N15mg/L,TP012mg/L112实验药品和仪器:(252200826)()()()()A12O3,11A12O3/mm/(m2#g-1)/N/(g#mL-1)4~6\175700159113实验装置GS-110,11-;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-1114实验步骤11411CAl2O3:CAl2O35,105e3h,500e3h;CuBFeBCoBNiBCe()1B1B1B1B1,6%;20%CAl2O3,30e150r/min,24h;,,110e3h,500e11412250mL;,,,;,,,;,10mL;,,,2211污泥催化湿式氧化工艺条件研究21111600r/min110MPa810g/L,CODCu2+,232COD323,,,1min,COD,,,,,COD,,,,253200826160e180e,COD,,,160~180e,,,,,,,180e21112180e110MPa810g/L,CODCu2+,454COD545,200r/min,COD,,400r/min,,,,400r/min,,H+,,,,400r/min21113180e600r/min110MPa,CODCu2+,676,,,210g/L1210g/L,COD019%013%214%616%616%,,COD6COD7,210~1210g/L,,810g/L212后续工艺研究21211,2542008267,30min,,22COD/(mg#L-1)1710910563116COD/(mg#L-1)40419488519/%9717991230min/%9414814/%97168813/%971484160104MPa/%97115912,30min,9515%,3,:8013%;:8511%;:9414%,,,21212,NH3-NTP88NH3-NTP,NNH3-N,P,,,,NP,3(1)Cu-Fe-Co-N-iCe/C-Al2O3:180e400r/min810g/L(2),90min,COD7216%,Cu2+1912mg/L(3),(4)NP[1]LeeCH,LiuJC1Enhancesludgedewateringbydualpolyelectro-lytesconditioning.WaterResearch,2000,34(18):4430-4436[2]JanuaryBB,EdwardSK,JurandDB1Influenceofultrasonicfieldonstructureandparametersofsewagesludgefordewateringprocess.Wat.Sci.Tech,1997,36(4):287-291[3],,,1.,1999,8(4):309-313[4],,1.,2001,7(5):20-23[5],1.,2001,21(4):504-506[6],1.,2004,24(3):44-46[7],,1.,2004,20(9):9-12[8]GotoM,NadaT,Kodama,etal1Kineticanalysisfordestructionofmunicipalsewagesludgeandalcoholdistillerywastewaterbysu-percriticalwateroxidation.Ind.Eng.Chem.Res,1999,38(5):1863-1865[9]ShanablehA,ShimizuY1Treatmentofsewagesludgeusinghydro-thermaloxidation-technologyapplicationchallenges.WaterScienceandTechnology,2000,41(8):85-92[10]MarjoleinePJ,Weemaes&WillyHVerstraete1Evaluationofcurrentwetsludgedisintegrationtechniques.Chem.Technol.Biotechnol,1998,73:83-92[11],,1.,1999,15(7):5-7[12]KhanY,AndersonGK,ElliottDJ1Wetoxidationofactivatedsludge.WaterResearch,1999,33(7):[e-mail]2008-07-21255