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23120042URANIUMMININGANDMETALLURGYVol123No11Feb12004:20030430:(1941),,,,,,(,101149):3,,,,,Cr6+:;;;:X70311:A:10008063(2004)01003506250350g/L(CrO3)[1]CrO3,Cr6+,,,,,((Cr6+)015mg/L),,Cr6+,3[2]:2,,;,,,(Cr6+)1001000mg/Ld50m3,BaCO3,(Cr6+)10mg/L,BaCrO4,,1hm(Cr6+)24mg/L,,,,,100m3/d,CrO31,SO42-1,2121;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;182211,,OH-,10,OH-;,D310710BD3703,,1(Cr6+)015mg/L,2;2(Cr6+)015mg/L,32,1;3(Cr6+)015mg/L,1,22,(Cr6+)015mg/L,,,CrO3,30d1288m3,113,CrO3270kg,2018kg,(CrO3)mL7413mg,7818mg,,212OH-OH-Cr2O72-SO42-CrO42-NO3-Cl-[3],(NaOH)NaOH2,Cr2O72-6323CrO42-,Na2CrO4:R2Cr2O7+2NaOHR2CrO4+Na2CrO4+H2O(1)OH-CrO42-:R2CrO4+2NaOH2ROH+Na2CrO4(2)8100g/LNaOH,Na2CrO44,4(CrO3),,,,pH7,;pH9,,100g/LNaOH,21(Cr6+)/(mgL-1)/hV/VB(Cr6+)/(mgL-1)12478610252471501252321045021.5219.70.3131265116013.0139.30.3412107524813.0144.60.472310419627.0242.90.453115227035.0375.00.401220039831.0334.50.352325043028.0308.20.213127.54587.01242.80.27126411060.5864.20.422334939914.0148.20.423135640913.5144.60.501211017342.8535.70.352310531525.5226.80.452g/LCrO3Cr3+SO42-Cl-79.90.141.601.7894.50.121.801.8677.80.121.602.0084.50.111.701.6280.50.161.801.4682.50.142.101.4681.20.132.301.60115.00.172.501.64213NaOHOH-,,Cr2O72-SO42-Cl-,OH-,pH4,Cr2O72-CrO42-:Cr2O72-+2OH-2CrO42-+H2O(3)CrO42-SO42-Cl-,Cr6+,,,,H+,H+pH23,,H+Cr2O72-:2CrO42-+2H+Cr2O72-+H2O(4),,,,731,:,H2SO4OH-SO42-,H2SO4,(H2SO4)4100g/L,pH5,,21421411Na2CrO4,H2Cr2O7H+,,Na2CrO4Na+H+,H2Cr2O7,pH215;Na2CrO4,,;100g/LH2SO4Na+H+,,pH33pHB/(gL-1)CrO3Cr3+SO42-Cl-pH78.60.124.301.840.6573.30.102.502.120.5589.30.053.101.580.1086.50.082.201.760.8081.20.102.801.210.7079.80.082.402.020.8021412100L/h,,,NaOH;,,(CrO3)=300350g/L,d300400L,68m3,60,44g/LCrO3Cr3+SO42-Cl-366.31.128.007.52399.60.809.207.64329.01.088.308.20345.61.228.507.80352.41.156.807.6021413,,(CrO3)1000g/L50110L2050L,(CrO3)55(CrO3)B/(gL-1)CrO3Cr3+SO42-Cl-B/10-2(CrO3)Cr3+SO42-Cl-945.75.8015.50.840.621.640.0881012.89.0021.20.630.892.090.0621038.88.6021.20.620.642.040.0601161.58.9024.00.400.772.070.0351097.68.4017.00.700.771.550.0631635.011.425.60.200.701.560.012,(Cl-)(Cr3+)(SO42-)(CrO3)0112%1%1%5,(SO42-),(Cl-)(Cr3+),kgCrO30105kgBaCO3,,,,83232153,d1016h,(Cr6+)250400mg/L,4060m3/d,42,800kg,,(Cr6+)015mg/L,33111,CrO3270kg,66kgCrO3/kg/kW/NaOH1.32.60H2SO43.71.4816.70.843.32.646,kgCrO37156,kgCrO317,1kgCrO310()(CrO3600700kg),8,2,312,5,(CrO3)(SO42-)34,(Cl-)10%,(Cr3+)8,,H2Cr2O7:Cr2O72-+6Cl-+14H+2Cr3++3Cl2+7H2O(6),(CrO3),(Cl-),(Cr3+),(Cl-),(Cr3+)/(CrO3)(SO42-)/(CrO3)1%,,(Cr3+)(SO42-)23g/L,(CrO3),H2SO4Cr(OH)3(Cr3+)(SO42-),(CrO3)1000g/L,34,(Cr3+)(Cl-),d,BaCO3(SO42-),,41),,,,2)(CrO3)1000g/L,BaCO3,,,CrO3,Cr6+3),,,:[1].[M].:,1988.169170.[2],,,.[M].:,1985.136158.[3].[M].:,1984.128150.IONEXCHANGEVAPORIZATION2CONCENTRATIONPROCESSFORDISPOSINGCr6+2INCLUDEDWASTEWATERPRODUCEDBYELECTROPLATINGLIUJian,XUDao2ming,BUYu2ling(BeijingResearchInstituteofChemicalEngineeringandMetallurgy,CNNC,Beijing101149,China)931,:Abstract:Thefeatureofionexchangevaporization2concentrationprocessusedtodisposewastewaterpro2ducedbyelectroplating,aswellasrunningeffectsareintroduced.Runningresultsof3monthsshowedallpollutantindexesofwastewaterdisposedbythisprocessareinaccordancewiththeNationalWastewaterDischargeStandard.ThequalityofH2Cr2O7recoveredcanmeetthedemandofelectroplating.Circulatedu2tilizationinclose2circuitofCrO3isrealizedandtheenvironmentalpollutioncausedbyCr6+iseliminated.Keywords:ion2exchange;Cr6+2includedwastewater;vaporization2concentration;electroplatingMineralsEngineering2003167AkcilA1,,,,9(Pseudomonassp1),2(CM5CMN2),pH(9121114)(30)(11041109cfu/mL)(100400mg/L),,,45hCN-,,,():1);2);3);4)(INCO,)()2003,,200320031113162562,,:;,,,,,,,20012003:,,()0423