钢铁酸洗废水中酸和铁的回收林青山

，，，，，，*100029。。、、、、。、。X703．1A1009－7961201801－0025－05ＲecoveryofAcidandFeFromSteel－picklingWastewaterLINQing－shanLIKun－pengLOUHong－chunLIFeiYUANYan－chaoGAOMin－jieSONGYing－hao*High－TechＲesearchInstituteBeijingUniversityofChemicalTechnologyBeijing100029ChinaAbstractThesteel－picklingwastewatercontainingalotofmetalionsandacidssometimesheavymetalionsanditsdisposalamountisoftenhuge．Directdisposalwillcauseseriouspollutionhowevertraditionaltechnol-ogyishardtotreatit．Steel－picklingwastewatercontainingalotofrecyclables．Technologiesofmembraneactivatedcarbondialysiscrystallizationandexchangeresincanbeusedtorecyclemanyresourcesfromit．Inthispaperthesourcehazardandtreatmenttechnologiesofsteel－picklingwasterwaterarereviewed．Inaddi-tionthedevelopmenttrendofrecycletechnologiesareprospected．Keywordspicklingwastewatermetalionsactivatedcarbondialysiscrystallizationexchangeresinrecycle2017－11－161987－、。*。0“”1。、、。。。。99．5%500。。。、、。。1300000m32。。、、271Vol．27No．120182JournalofHuaiyinInstituteofTechnologyFeb．20183。Fe3+、Mn2+、Cd3+、Cr3+、Cr6+、Ni2+、Cu2+。2。。20118。。。。。4。3、、、、。、5。。1。3．1。pH26。。－、、、、。。。、、。1。1HCl、、、HFHNO3、、、、、、1FeSO4·7H2O80℃10℃。0．35tFeSO4·7H2O。6“”。3．27、。。3．2．1。。1262018Ti/SnO2－Sb2O3DF120。Fe2+、H+Cl－H+Cl－2。21．2．Ti/SnO2－Sb2O33．4．5．6．7．2H++2e－→H2↑Fe2++2e－→Fe↓4OH－→2H2O+O2↑+4e－2Cl－→Cl2↑+2e－pHpH。。。91．8%70．3%8。2DF120。Fe2+、H+Cl－H+Cl－。3。31．2．Ti/SnO2－Sb2O33．4．5．10VpH2．50～3．00Fe2+1000～1300mg/LpH3．00240minFe95%pH5．13Fe2+60mg/LpH1．43。0．1mol/L9。Fe1000/400/2．02/。3．2．2－－。11、pH、、、。DF120Ti/SnO2－Sb2O3/PbO2246×4cm2。4。4－1．2．3．4．5．6．7．8．9．10．11．12．DF12013．14．Ti/SnO2－Sb2O3/PbO2－、pH、、127、。0．35L/h110V66．7%88%11。3．3、、、、PFAC。12－13。6．6%9．9%1．157Al2O357．0%。5。5PFACPFAC、、。3．4、。。zdemir14。3．4．1－－15。FeF3·3H2O。。。3．4．2。、12%～15%45%～57%FeSO4·H2O。16。3．517。18pH5．5、80℃、22h。3．6Fe3+、Cr3+19。001x7－SO3H。24h21mol/LNaOH24h21mol/L24h。5mL001x7500mL200mL。150r/min120min。001x7Fe3+65．3mg/g。99．5%19。。、、。3．7、、、282018。。Cr3+Fe3+。。Cr3+Fe3+4．54640．76mg/g。20Cr3+Fe3+。。4123。、、21。。。。EDTA。1．J．2010851－55．2Ｒegel－ＲosockaM．AreviewonmethodsofregenerationofspentpicklingsolutionsfromsteelprocessingJ．JournalofHazardousMaterials2010157－69．3．J．20104238－241．4．J．2010938－41．5．J．2005533－36．6．J．2004460－61．7SchmidtBWoltersＲKaplinJetal．Ｒinsewaterre-generationinstainlesssteelpicklingJ．Desalination20071－364－71．8．J．2010413－16．9．J．2010851－55．10XuJLuSFuD．ＲecoveryofhydrochloricacidfromthewasteacidsolutionbydiffusiondialysisJ．Journalofhazardousmaterials20091832－837．11．－D．2011．12．PFACJ．20094365－369．13．J．2009164－67．14zdemirTztinCKlncalNS．TreatmentofwastepicklingliquorsProcesssynthesisandeconomicanaly-sisJ．ChemicalEngineeringCommunications20065548－563．15ForsbergKMＲasmusonC．ＲecyclingofwastepickleacidbyprecipitationofmetalfluoridehydratesJ．Min-eralsengineering20079950－955．16．M．1979．17．J．2014846－50．18．J．2003461－62．19．J．20112155－158．20．Cr3+Fe3+J．20105911－914．21．M．2002．(:)129