化学法处理重金属离子废水的改进

(510310),,pH11,pH,,,,pH79,,,,,,1,,pH11,pH,,,1pH=69,,,,,pH,,221)Ca(OH)22),Ksp10219,3),,4)H2SSSO25)3,11200L;2;3,60130römin;4,2kw111kg,10L,120L,12kg,,1520kg,,,,24h,,,83Sep.1999PlatingandFinishingVol.21No.5©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,43,pH=11()()pH=69,pH=11,Ni2+Cu2+Ni(OH)2Cu(OH)2Ni(OH)2Cu(OH)2015mgöL,,,pH=69,,,5,,pH=891h,FeSO4pH=89,,Ni2+Cu2+CuSNiSCuSNiS,pH,,FeSO4,:015110mLöL:015110mLöL,,,,6Ksp4:1KspKspNi(OH)221010215NiS(A,B,C)3101021910225Cu(OH)221610219CuS51010236,NiSCuSNi(OH)2Cu(OH)2,pH89,,pH,(2)2pH=69Ca(OH)2Cu(mgöL)Ni(mgöL)pHCu(mgöL)Ni(mgöL)pHCu(mgöL)Ni(mgöL)pH1812871323122164316881601330124818101109128318310641528150136012581414143101664163121411581601210111814111216150317211721549100138012691223176141112154133310891001400132816191202013431231663124818012401199102116819137319312821368100127010681219185311752164150412281201400145812pH69,,,199510201996921,,:9319999215(128)©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3(mgöL)pHSSCODcrBOD5CrCr6+19952102206196282114310136011921580104801041010101160161011001221996209221813213818020140010871160100501200101010030100201420116719958,,,,,,,,,1,,1,,:119891587211,1995(5):131,:.1985148941,:.1977162(1999205210)04Sep.1999PlatingandFinishingVol.21No.5©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.