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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(109)20093HydrometallurgyofChinaVol.28No.1(Sum.109)Mar.2008(,101149):,,(),,:;;;:X756:A:100922617(2009)0120012206:2008207216:(1937-),,,,,,,60[1],,,,12a,[2],,,[325],2056.5g/L[6],,,2060,[7],,,:,[3],;,90,,(),[8],,,,,,,,,1(),pH,,[9],;,(FeAsO4)(Ksp=5.810-21),[6],,,,pH©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1),,1Eh2pH[16][9],(SO2),,97.3%30minSO2,,50.6%[5],,SO2,,,[3]pH:pH11.5[10],pH2.67.0[11];(pH7.510.3),,pH,[1]:As(OH)3+H2O2HAsO2-4+2H++H2O,AsO(OH)-2+H2O2HAsO2-4+H++H2OMnO2pH=7,[1]:As(OH)3+MnO2HAsO2-4+Mn2++H2O,As(OH)3+2MnOOH+2H+HAsO2-4+2Mn2++3H2O(pH710),,[11],,[5][9],,,,Cl-,1.2[6],,AsFe56.48g/L47.62g/L,m(Fe)/m(As)1.13(AsFe),pH=3FeAsO4,pH68,0.34mg/L,,pH3.56.18,(1)1Fe3+As()[12]pHB/(gL-1)As()FeSO2-4m(Fe)/m(As)1.285.3115.49334.383.913.539.010-52310-33.633404.896.010-51310-33.012916.181.910-41.310-42.310.92,Fe3+15.48g/L,Fe2+0.01g/L,31©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),pH,,(0.5mg/L),,,[5,11,13-14][10];[4,15]pH,89,10.5;pH,8.0,pH(pH69),(2)2[16]m(Fe)/m(As)pH(As)/(mgL-1),0.6890.33m(Fe)/m(As)=3.03.025101110155.060.21,(As)=414.9mg/L1.3()pH,Fe3+[Fe(H2O)6]3+,[Fe2(OH)3]3+,[Fe2(OH)2]4+,,,,;,(PAM),,,,,[17][9]Fe2+PAM,0.30.5mg/L(DTCR)[4,15][10],,2[14],2000m3/d,(As)(F)10020035mg/L,pH=1.0,(2),3241©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(Fe)/m(As)101230101118.010.530101101,,,,,,,:pH79,:(As)0.5mg/L,(F-)5mg/L,(SS)33mg/L,200mg/L,1m30.7[13]2,:pH=10.5,m(Fe)/m(As)=1/1;pH=8.5,m(Fe)/m(As)=10/1,20min,1h6d4,5,,,4pHB/(mgL-1)AsFePbCdSS1.02.0198.7264.5239.865365571.12.91.910.531.340.971021200017057.08.60.050.30.190.32.01.10.110.190.080.0010.0030.002131.520mg/L56d/(kgm-3)/(t-1)/(m-3)2.31000.232.312800.64712.5m30.009/m30.1130.99[18]()(),198m3/d3(3m3/h,,),490m3/d,25m3/a,33.0m,20022,6351©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:1,m(Fe)/m(As)=40/1,45min,pH8.511.0;,m(Fe)/m(As)=200/1,30min,pH69;14h20%,((6))2.36,48.71,6.890%,,6pHB/(mgL-1)AsCuPbZn1.646.723.276.274.89.820.10.20.651.467.310.280.020.020.236.30.040.131.560.778.440.030.010.0140.057.730.120.010.010.06690.50.51.02.03,,,,[4](TCLP),[8],pH,Fe2As,Ca2+,;m(Ca)m(Fe)m(As):,,,[6]pH,pH7,:FeAsO42H2O+3OH-Fe(OH)3+AsO3-4+2H2OFeAsO42H2O+3OH-FeOOH+AsO3-4+3H2O,pH,,,,,,,,41),,2),,,,,,,,3),,():[1],,,.[J].,2003,23(6):14218.[2].[J].,2003,44(10):5592560.[3].[J].,2006(4):27230.[4],,,.[J].,2003,35(4):30231.[5],,.[J].,1944,15(4):4424661©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[6],,,.[J].,2000,21(4):3592362.[7],,,.[J].,2004,24(7):132.[8],,,.[J].,2002,18(4):42245.[9],.[J].,2001,17(6):40241,48.[10],.[J].,2002,22(9):29231.[11],,,.2[J].,2004,24(11):36238.[12].[J].,2006,25(2);1002102.[13],,,.2[J].,2003,12(1):79281.[14],.[J].,2005,23(1);31232.[15],,,.[J].,2003,(5):2312233.[16],,,.2[J].,1997,17(2):1842187.[17],,.2[J].,2000,20(9):27229.[18].2[J].,2006,27(3):58261.ChemicalPrecipitationMethodsforTreatmentofHigh2arsenicConcentrationIndustrialEffluentsXUGen2fu(BeijingResearchInstituteofChemicalEngineeringandMetallurgy,CNNC,Beijing101149,China)Abstract:Theexperimentalinvestigationsandindustrialapplicationsontreatmentofhigh2arsenicconcentrationindustrialeffluentsbychemicalprecipitationmethodsarebriefintroduced.Thekeyprocessforremovalarsenicbychemicalprecipitationarediscussed.Thesedimentiscomplexandunstablebecauseofcontainingarsenic,ironandcalciumion.Foradaptingtostringentrequirementofenvironmentalprotectionandwastetreatmentandresourcerecycling,Itsuggestedthattheresearchoncomprehensivetreatmentprocessshouldbetakenintoaccountforthevasteffluentscontaininghighconcentrationofarsenicandheavymetals.Keywords:arsenic;industrialeffluent;chemicalprecipitation;treatment(ZnFe2O4)MrkaLangov,ZnFe2O4250,90%,91%9%0.18%0.05%0.3mol/L99%,,[Hydrometallurgy2009,95(3/4):1792182]71