化学法处理电镀废水

X5101301,43,,,,,,pH,,2,,,,,5,11(m3/d)1212NaOH,KOH,2513,3113,,4110,,5115,2112111112:()/,21112(4)21112()()()/45:(1)()/(2),pH118213(3)NaHSO4,Cr()Cr(),:4H2CrO4+6NaHSO3+6HCl2Cr2(SO4)3+6NaCl+10H2O(4)(21111),pH8(NaOH)(5),21115(5)64CHEMICALENGINEERINGDESIGN2004,14(1)X:1996:[phone]©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(6)10%Ca(OH)2pH1115,FeCl3,(7)34h(8)()(9)(),,()(10)COD2111312:(1)(2)NaOH,pH1115(3)Na2S,Fe2Cl3(4)(5)(6)()COD(7)(),COD,(),2111412:(1)(2)(7)211132111512:(1)(2)pH10(3),(),NaCN+NaClONaCNO+NaCl(4),pH215(5),21112(5)212COD(1)COD(2)COD(3)35%H2O2FeSO4,pH34(4)24h(5)(6)(7)(),213(1)pH615915(2)()(3),113(1),314m2(2)44kW(3)(4),(5),(6)(7)(8)(9)42742004,14(1)©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.23pH71069012mg/l014mg/l110mg/l112mg/l013mg/l013mg/l110mg/l014mg/l015mg/l014mg/l015mg/l015mg/l210mg/l011mg/l013mg/l(SS)110mg/l710mg/lCODcr500mg/l80mg/lBOD5300mg/l30mg/l3:(DB443790)CODBOD,(DB443790),CODcr500mg/l,BOD5300mg/l,5,,,1..,19972,..,19883ArnoldS.Vernick,ElwoodC.Walker,HandbookofWasteWaterTreatmentProcesses,19804..,1996(2003-08-26)(38),(3)ClO2,,,ClO2,(4),,Zn2+,Zn2+,Zn2+(5),,,(6)5,,,1().1,199121.,19893..,19914,..1994(6)5..1999(1)(2003-04-07)(42)4TrabelsiF.,KikicI.PredictingtheApproximateSolubilitiesofSolidsinDenseCarbonDioxide.J.SupercriticalFluid.1999,14(2)1511615KurnikR.,HollaS.SolubilitiesofSolidsinSupercriticalCar2bonDioxideandEhthylene.J.ChemicalandEngineeringData.1981,26(1),47516IwaiY.,YamamotaH.Solubilitiesof2,52and2,62XylenolsinSupercriticalCarbonDioxide.J.ChemicalandEngineeringData.1990,35(2)1741767FrankP.,NeilR.InfluenceofMatrixCompositionontheSol2ubilityofHydroxybenzoicAcidIsomersinSupercriticalCarbonDioxide.IndustrialandEngineeringChemistryResearch.1996,35(12)468646998LeeH.K.,KimC.H.SolidSolubilitiesofMethoxyphenylaceticAcidIsomerCompoundsinSupercriticalCarbonDioxide.J.ChemicalandEngineeringData.1994,39(1),1631659Coutsikos,P.,MagoulasK.SolubilitiesofPhenolinSuper2criticalCarbonDioxide.J.ChemicalandEngineeringData.1995,40(4)953958(2003-12-10)84CHEMICALENGINEERINGDESIGN2004,14(1)©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.FluidizationStateofPrimaryNano-ParticlesSiO2MixedwithLargeParticlesLiAirong,etal(DepartmentofChemicalEngineering,SichuanUniversity,Chengdu610065)Theprocessoffluidizingprimarynano-particlesof10nmSiO2powderwasinvestigatedinasmall-scaletransparentcolumnwith60mmI.D.Inthisexperiment,threedifferentdiametersofsphericalglassparticleswerechosenastheadditionalcomponent.Experimentsindicatedthattheprocessoffluidizingprimarymano-particlesin2volveschanneling,slugging,disrupting,agglomerating.Moreover,thefluidizationqualitycanbegreatlyimprovedwhentheprimarynano-particleswasmixedwiththesphericalglassbeads.Atthesametime,thefluidizationqualityofthepowdercanbeshownbythecurvesofpressuredropacrossthebed.Keywordsnano-particlessphericalglassbeadsagglomeratefluidizationqualityChemicalMethodforWasteWaterofElectroplateLiquidPlantGuGuangyu(GuandongPetrochemicalEngineeringDesignInstitute,Guangzhou510130)Chemicalmethodshouldbeusedatthefirststageofelectroplatewastewatertreatment.Acollectingandtreatingplanwitheffeciveresulthavebeenintroducedinthearticle.KeywordselectroplatewastewaterwastewatertreatmentchemicalmethodtreatmentImprovementofHydrogen-containedOff-gasPurificationProcessinChlorateProductionFuYiwei(FujianPetrochemicalIndustrialDesignInstitute,Fuzhou350001)Thearticleintroducestheprocessforhydrogen-containedoff-gaspurificationinandprocessimprovementinchlorinateproduction.Keywordschloratehydrogen-containedoff-gaspurificationprocessimprovement(TranslatedbyYangFuxiong)2CHEMICALENGINEERINGDESIGN2004,14(1)©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.