活性炭载体三相流化床催化氧化含氰废水的工艺理论研究

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,510641),,,,46.3%STUDYONTHETHEORYOFCATALYTICOXIDATIONOFCYANIDEBYUSINGTHREE2PHASEFLUIDIZEDBEDWITHACTIVATEDCARBONWeiChaohaiLiBuqing(InstituteofEnvironmentalScience,SouthChinaUniversityofTechnology,510641)ABSTRACTOnthebasisofstudyontheprocesstheoryandoperationalcharacteristicofcyanidetreat2edbythree2phasefluidizedbedasreactor,workingconditionisdeterminedbyperpendiculartestingandtheeffectofrelatedfactorisanalysed.Becauseofcyanidetreatedbyusingthree2phasefluidizedbedwithactivatedcarbon,highvelocityofmasstransferandsufficientdissolvedoxygenavailableinanypositionscanincreasethevelocityofadsorptionandcatalyticoxidationobviously,thetreatmentofcyanidebyacti2vatedcarbonismoreeffectiveandtreatmentcapacityis46.3%higherthantheoneoffixedbedunderthesamecondition.Thismethodcanbeappliedtothetreatmentofcyanidefromsyntheticfactories.KEYWORDScyanide,activatedcarbon,adsorption,catalyticoxidation,three2phasefluidizedbedandtreatment.31,,,,,[13],,,22.1119972151ENVIRONMENTALENGINEERINGFebruary,1997Vol.15,No.1©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1):0.88L,:0.60,:0.730.5,1.33mm0.4,0.8mm(2):(3)2mm,0.75g/cm3,900m2/g(BET),2.10g/cm3,400g/L33.12A,,,AB,,,,,AB23.233,,,Qg0.08m3/h,,O2419972151©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(GB,),,5C(t)E(t),15€t=otC(t)dtoC(t)dt2t=o(t-€t)C(t)dtoC(t)dt1Ql/Lh-1)C(t)E(t)/min2t24.14C(t)=75.128e-0.0678t(r=-0.9944)E(t)=0.0678e-0.0678t14.75217.560.99993.03C(t)=92.85e-0.0577t(r=-0.9988)E(t)=0.0577e-0.0577t17.33300.331.00001.90C(t)=94.42e-0.0445t(r=-0.9988)E(t)=0.0445e-0.0445t22.47504.901.00000.99C(t)=85.05e-0.0281t(r=-0.9981)E(t)=0.0281e-0.0281t35.591266.651.00002=1;2=0;021,,,1,3.3,,,,(Ql)(Qg)(WAC)Cu2+519972151©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(WCu)CNCN10000mg/L2123,R,,:(1):QlWCuWACQg(2):2()Ql/Lh-1Qg/m3h-1WAC/gCu:CN()/mg(gh)-1(CN/AC)CN/mgh-1AC(%)/mgL-111.900.0880181.586.748.7542.6121.900.0460141.740.848.3373.3531.900.141001120.962.2612.850.6140.990.08601120.692.7211.769.7550.990.04100180.665.069.065.0960.990.1480140.642.2512.557.2773.030.08100141.701.7511.077.1683.030.04801121.462.123.7579.2193.030.1460182.193.208.3372.784.283.973.684.431.993.864.624.085.353.793.323.1111.62R3.360.181.301.329.8411.2111.1115.0010.038.026.764..847.077.719.077.1026.94R2.963.504.3510.1629.8831.4525.0026.0833.2021.0828.3631.8323.0833.6332.8028.2586.18R10.1212.557.805.75Ê166.57189.52179.09180.48Ê192.11217.65215.88207.78Ê229.15180.66192.86199.57587183RÊ62.5836.9936.7927.301RÊ0.01600.02700.02720.0366WCuWACQgQe(3):QgQlWACWCu(4)CN:QlQgWACWCu,Cu2+,WCuWACCu2+,HCNQg,,,,:(1)Cu2+WCu:WCN=1:3.85(mol),Cu(CN)-2Cu(CN)2-3;(2),619972151©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(3);(4),:Ql=1.90L/h,Qg=0.065m3/h,WAC=80.0g,WCu:WCN=1:3.85,CoCN=100.0mg/L,pH=8.593.46,7,t3.7h,,,,(14h):11.96mg/g(CN/AC),17.50mg/g(CN/AC)46.32%67,,[4]:WQl=Co-Ct-r,-r=QlW(Co-Ct),W(g),Ql(L/h),CoCt(mg/L),-rmg/gh(CN/AC),n,:-r=QlW(Co-Cn+Cn-12)8,3.7h,:(1);(2);(3)(3),,(1)(2)[5],,,83.5719972151©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:W.WESLEY.ECKN2FELDER[6],[2]O2,,93N2O2airC/mgg-1(CN/AC)13.7418.0517.50(%)314.8850.9246.323%=C-CC1004,,,,,,1,1,1991,11(2):182,1,1994,22(5):193,1,1984,3(6):2841,1986,9(5):29931151,1976,40(8):4024126W.WESIEY.ECKENFELDER.AIChE,1961,7(4):631639,,19626,1996,,,1996-03-11,19961025,4164,30t:,,,1996()819972151