电絮凝处理TNT酸性废水的研究

:2002-05-17::(19572),,TNT,,(,610066):TNT.3min,pH89105A/m2,82.0mg/L0.6mg/L,CODCr394.0mg/L98.0mg/L.CODCr99.27%74.47%..:TNT;;:X52:A:100128395(2003)0420404203TNT.[17].,,.,,,,,.[8](25)8d.[9,10],,.,.1,:Fe+2H2O-2e=Fe(OH)2+2H+,CH3NO2+6H++6e=CH3NH2+2H2O,NO2NO2CH3+12H++12e=NH2NH2CH3+4H2O,NO2NO2CH3NO2+18H++18e=NH2NH2CH3NH2+6H2O.Fe(OH)2,N,Fe(OH)2,x(CH3)m(C6H6-m-n)(NH2)n+yFe(OH)2=[Fe(OH)2]y[(NH2)n(C6H6-m-n)(CH3)m]x,m=1;n=1,2,3.2TNT,82.0mg/L,CODCr394.0mg/L,pH0.9,75.33.15L(80mm250mm270mm,20mm).,3mm,1mm.230mm240mm,15mm.3.2(1)pH89(Fe(OH)2,);(2),;(3).3.3(1),0.1mg/L;(2)2,0.2mg/L;(3),0.03mg/L;(4)COD,5mg/L;(5)pH;(6)EDTA;(7).20037264()JournalofSichuanNormalUniversity(NaturalScience)July,2003Vol.26,No.43.416.:(1),,,,,.(2),,.,Fe(OH)2,,,,H2,.,,,Fe(OH)2,.(3),,,.,Fe(OH)2,,,(H2),,.,,,.,,,.(4),.,,Fe(OH)2.5044:TNT,.,,,.(5)COD,COD,COD,,,COD.,,COD.3.5,3min()pH89105A/m2.,6.26.7V,184.5g/t,98.2%,COD980.60.6mg/L,18.3.6480m3/d,,,.4.48/t()3.08/t().0.55/t(3.0),1.16/t(6.7V),0.58/t(0.5),1.13/t,.4,COD980.60.6mg/L,18,(GB897821996)(COD100mg/L,2.0mg/L,1.0mg/L,50),.[1],.[J].,1995,15(5):276279.[2].[J].,1989,6(5):1215.[3].[J].(),1998,25(4):384388.[4]ZablotowiczRM.CanJMicrobiol,1999,45(10):840848.[5].[J].,1999,12(6):2527.[6]SimonT,LukeZ.Microbioldegradationofmuntioncompoundsinproductionwastewater[J].WaterRes,1999,33(13):30403045.[7]NishinoShirleyF.DegradationofnitrobenzenebyaPseudomonaspseudoalcaligenes[J].ApplEnvironMicrobiol,1993,59(8):25202523.[8],.TNT[J].,1998,17(4):13.[9],.[J].,1996,4(3):117.[10],.[J].,1998,17(2):1519.TheStudyofElectroflocculationProcessforTreatingTNTAcidicWasteWaterLONGBing2qing,CAOZhi2jing,YANGDai2jun(CollegeofChemistry,SichuanNormalUniversity,Chengdu610066,Sichuan)Abstract:TheelectroflocculationprocessfortreatingTNTacidicwastewaterhasbeenstudiedinthispaper.Undertheoptimumconditiion(wastewaterdetainedtime3min,pH89,currentdensity105A/m2),theconcentrationofnitrobenzenecanbereducedfrom82.0mg/Lto0.6mg/L,CODCrcanbereducedfrom394.0mg/Lto98.0mg/L.ThecleaningrateofnitrobenzeneandCODCris99.27%and74.47%re2spectively.Therunningcostofelectroflocculationprocessisverylowerthantraditionalactivatedcarbonabsorptionprocess.Keywords:TNTacidicwastewater;Electroflocculation;Treatingprocess()604()26