电镀废水处理工程应用杨志泉

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EngineeringapplicationofelectroplatingwastewatertreatmentYangZhiquan1,2,3,LiuGuolin4,ZhouShaoqi1,2,3(1.SouthChinaUniversityofTechnology,UniversityofEnvironmentalScienceandEngineering,Guangzhou510006,China;2.KeyLabofDepartmentofEducation,PollutionControlandEcosystemRestorationinIndustrialClusters,Guangzhou510006,China;3.KeyLaboratoryofEnvironmentalProtectionandEco-RemediationofGuangdongRegularHigherEducationInstitutions,Guangzhou510006,China;4.WaterSupplyCo.,ProgrammingandConstructingBureau,Xin’gan331300,China)1,2,3,4,1,2,3(1.,510006;2.,510006;3.,510006;4.,331300)[],、,1500t/d,、、、,,、,《》(GB8978—1996)。[];;;[]X703.1[]B[]1005-829X(2010)07-0075-04Abstract:Thecomponentsofthewaterbodyintheelectroplatingwastewaterfromamachinery-makingfactoryinsouthofChinaareverycomplicated,containingmanykindsofheavymetals,cyanide,etc.Itstotaldischargecapac-ityisabout1500t/d.Thechromium-containingandcyanide-containingwastewatershavebeenpretreatedbyprocess-esofoxidation,reduction,flocculationsedimentation,etc.respectively,and,then,retreatedbymixingtheacidicandalkalineheavymetalelectroplatingwastewater.Prettygoodtreatmenteffectsonheavymetals,cyanide,etc.areobtained.ItseffluentreachesthefirstclassofIntegratedStandardofWastewaterDischarge(GB8978—1996).Keywords:electroplatingwastewater;heavymetal;chromium-containingwastewater;cyanide-containingwaste-water[](200803),。,、,、、〔1-3〕,,〔4-5〕,。1、。、,18t/h,CN-,30mg/L,pH8~11;、,18t/h,Cr6+,60mg/L,pH3~4;、、、、,、、,40t/h,COD200mg/L、Cu2+30mg/L、Ni+3mg/L、Zn2+30mg/L、pH2~4。1500t/d,,,30720107IndustrialWaterTreatmentVol.30No.7Jul.,201075——2010-07,30(7),15h,。,270t/d。,24h,,,,960t/d。1500t/d。,《》(GB8978—1996),Ni2+≤1.0mg/L,Cr6+≤0.5mg/L,Cr≤1.5mg/L,pH6~9,COD≤100mg/L,SS≤70mg/L,Zn2+≤2.0mg/L,Cu2+≤0.5mg/L,CN-≤0.5mg/L。2,1。、,2、3。、。pH=9.5,,,pH。,,。33.1(1)1。1,6000mm×11000mm×2600mm,2.10m,138.6m3,HRT=7.7h,。(2)。2,,1500mm×1750mm×2400mm,2.00m,5m3,HRT=17min,。(3)。、PAC、PAM。1500mm×2000mm×2400mm,2.00m,6m3,HRT=20min,。PAC、PAM。(4)。,,SS,。4000mm×4000mm×5000mm,2m,64m3,HRT=3.5h,0.5m3/(m2·h),。3.2(1)2。2,6000mm×11000mm×2600mm,2.10m,138.6m3,HRT=7.7h,。(2)。,、NaHSO3Cr()Cr(),。1500mm×1750mm×2400mm,2.00m,5m3,HRT=17min,。3.3(1)。,14000mm×18300mm×3600mm,3.00m,770m3,HRT=11h,。(2)。,pH9,。1750mm×3750mm×2400mm,2.00m,13m3,HRT=11min,。(3)。PAC、PAM。2000mm×3750mm×2400mm,2.00m,15m3,HRT=13min,。PAC、PAM。(4)。,,,SS。D6000mm×6000mm,3.5m,200m3,HRT=2.9h,1.85m3/(m2·h),。(5)。pH7~9,76——2010-07,30(7)pH。2000mm×6000mm×2400mm,2.00m,24m3,HRT=20min,。3.43,,,,1,2,。、2000mm×6000mm×2400mm,24m3。3750mm×4000mm×5000mm,45m3。,PACPAM,。44.1,,,《》(GB8978—1996),1。4.24.2.1CN-,。pH11,,pH5,CO2N2,(1)。CN-+ClO-+H2O→CNCl+2OH-CNCl+2OH-→CNO-+Cl-+H2O(1)2CNO-+3OCl-→CO2+N2+3Cl-+CO32-4.2.2Cr(),Cr(),。Cr(),。,,Cr()Cr(),Cr(OH)3,。,Cr():pH3~4,NaHSO3Cr()Cr();,pH8~9Cr(OH)3。(2)。Cr2O72-+3HSO3-+5H+→2Cr3++3SO42-+4H2OCr3++3OH-→Cr(OH)34.2.3、、Cu2+、Zn2+,pH8~9,Cu2+、Zn2+OH-、。Ni2+,,pH10~11,Ni2+OH-,。Ni2+pH10~11,,pH8~9,Ni2+,,。4.2.4CODCOD,,COD。,,,,ζ-,,,。,《》。5200,1500t/d。:、、、,1.5/m3。6(1)、,,。、,,,。(2),、、,、、,、、、90%,《》。(3),1mg/LCODCr6+Zn2+Cu2+Ni2+CN-200603030330800.451.40.40.80.4,:(2)77——[](1978—),2009,,。:13724008305,E-mail:zqyang@scut.edu.cn。[]2010-03-21(),,,,。[][1],,.[J].,2003,25(3):36-38.[2],,,.——[J].,2008,28(3):45-47.[3],.[J].,2008,27(5):70-73.[4],,.[J].,2005,36(2):43-45.[5],.[J].,2008,15(3):69-72.ApplicationofthereclaimedwaterintegratedmembranetreatmentsystemtothermalpowerplantsZhangDongshun(StateNuclearElectricPowerPlanningDesign&ResearchInstitute,Beijing100094,China)(,100094)[](UF)—(RO)—(EDI),。,。,6.25×106m3,1800,。[];;;[]X703.1[]B[]1005-829X(2010)07-0078-03Abstract:DalianTaishanThermalPowerPlanthasusedultrafiltration(UF)-reverseosmosis(RO)-electrodeioniza-tion(EDI)technologyfortreatingthesecondaryeffluentofMalanheWastewaterTreatmentPlant,tomeetthewaterqualityrequirementsoffeedwaterofsuper-highpressureboiler.Thedesignofsystemprocessandoperationofthee-quipmentareintroduced.Afterthetreatment,theeffluentwatercanmeetthedesignrequirements.Throughthereuseofreclaimedwater,6.25×106m3offreshwatercanbesavedforthethermalpowerplantannually,and18millionofChineseYuancanbesaved.Itssocialandeconomicbenefitsareremarkable.Keywords:reclaimedwater;ultrafiltration;reverseosmosis;electrodeionization,,4km。2×440t/h,2×135MW,4×440t/h,4×135MW。、、()。1,、。SEDIPAC3D,BIOFORC/NBIOFORN,1.2×105m3/d,4×104m3/d。1。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。30720107IndustrialWaterTreatmentVol.30No.7Jul.,201078——

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