化学法处理电镀废水的自动化控制应用

15320059JOURNALOFEMCCVol.15No.3Sep.2005:2005206210:(1969),,,,:10082813(2005)0320104203:X505:A(,361006):,pHORP,:,:;;ApplicationofAutomatedControlofElectroplatingWastewaterTreatmentinChemicalMethodWEIYu(XiamenEnvironmentalProtectionInstitute,XiamenFujian361006)Abstract:Adoptautomationtreatmenttotreatelectroplatingwastewatercontainingchromi2umandnickelinchemicalmethod,selectingproperchemicalmedicament,pHandORPcon2trolsparametercontinuously.Resultsindicatethatthiswatertreatmentprocessaccommo2dateswaterfluctuatingwellwithsimpletechniques,goodeffect,stability,goodmaneuver2abilityandpropercost.Thewaterqualityaccordswiththestandardsofemissioncompletelyaftertreatment.Keywords:chemicalmethod;electroplatingwastewater;automation1,,,,,,,pHORP,,2,300m3/d,50m3/d100m3/d150m3/d,11pHCODcr(mg/L)Cr6+(mg/L)(mg/L)Ni2+(mg/L)2.811012.58020533.112005310513.2,1,2pH410,Cr6+Cr2O72-,Cr6+Cr3+,(NaHSO3)(FeSO4),:Cr2O72-+3HSO3-+5H-=2Cr3++3SO42-+4H2OCr2O72-+6Fe2++14H+=2Cr3++6Fe3++7H2OFeSO4,FeSO4Cr6+,,NaHSO3,Fe(OH)3,,FeSO4,Fe2+Fe3+,Fe3+Cr3+Ni2+pH,NaOHpH9.5,:Ni2++2OH-=Ni(OH)2Cr3++3OH-=Cr(OH)3Fe3+,(PAM),,,,,,,Ni2+Cr3+,,,H2SO4pH69,3.3(1),,(2)NaHSO3FeSO4,ORP,ORP,,;H2SO4,pH,pHpH,,(3)pHNaOH,pH,pHpH,,(4)(PAM),,(5)pHH2SO4,pH,pHpH,,3.4(1)Cr6+,2,NaHSO3FeSO4Cr6+,pH2.3106200592.5,pH,,H2SO4;ORP230250mv,ORP,,NaHSO3FeSO4,Cr6+Cr3+(2)pH,pH9.339.83,pH,,NaOH,Cr(OH)3Ni(OH)2(3)pHpH,pH89,pH,,H2SO4,pH693.5232(m)117.03.02.512212.07.02.5131.51.51.814pH1.51.51.8154.01.51.81617.03.03.017pH1.51.51.0181.51.53.013140CQ-2042BB3063pH/ORPpH/ORP-1024pHORP4SSR10015LW50-20-1516LW40-15-3017100ZW80-2018G25-119XA10/800-U014199910,,,44pHCODCr(mg/L)Cr6+(mg/L)(mg/L)Ni2+(mg/L)6.5146.10.0030.0360.054,(GB897896),,Cr6+Ni2+99%5(1),,,(2),,,,(3),,,,,2.5/m3(4),,2002,,[1],.[M].:.2000.5[2],,.[M].:.2003.6[3].Ni2W[J]..2004(1):1416[4].[J]..2003(6):363366