用沸石处理含铬废水的试验研究

(,,250022),,:pH4,Cr3+300gm/L,1500,99%,EXPERIMENTALSTUDYONTHETREATMENTOFCHROMIUM2CONTAININGWASTEWATERWITHZEOLITEZhengLishengWangShilongZhangHongGengWeixu(DepartmentofAppliedChemistry,ShandongCollegeofBuildingMaterials,Jinan,250022)ABSTRACTThetreatmentofchromium2containingwastewaterwithzeolitewereexperimentallyin2vestigated.Theresultshowthattheratioofremovingchromiumisgreaterthan99%intherangeofpH4andCr3+300mg/LwitheffluentmeetingwithNationalWastewaterDischargeStandard.KEYWORDSchromium,zeolite,treatmentofwastewater1[1],,pH4,Cr3+300mg/L,1500,99%,[2]pH,,2211:51124gCrCl36H2O,1L,,Cr3+1000mg/L,50mL1L,,,50mg/L:,40,11CaOMgOAl2O3SiO2Fe2O3K2ONa2O(%)21860162131246514011022109115721250mg/L100mL400mL,215g,30min,,pH:(%)=C0-CC0100C0Cr3+,mg/L;CCr3+,mg/L19976153ENVIRONMENTALENGINEERINGJnue,1997Vol.15,No.3©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.pHpHS-2[3]3311,,22,,,2g,,99%,,2.5g,,15002/gpHCr3+/mgL-1pHCr3+/mgL-1%1105152506185131273162105152506194013099142155152507118012199163105152507127011899164105152507148011599177105152507186010999181010515250811001059919312,pH,33,pHpH4,,pH413,99%,,pH43/gpHCr3+/mgL-1pHCr3+/mgL-1%2151194503180361127182153112504174181862142154103505118014099122155114507128012499152156110508144011399172159140508178010399192151119250101620104991921513104501114001049919313,,44,Cr3+,10min,99%,,30min4/gminpHCr3+/mgL-1pHCr3+/mgL-1%2151051345071360141991221520513450716201389912215305134507190012799152154051345071860114991721560513450719401059919314,,:1040,,99%,3154080120160,,,,,99%,,40316,1500,55,,300mg/L,99%,,5/gpHCr3+/mgL-1pHCr3+/mgL-1%015515810716401259714112551552571800114991421551505071850120991651051301007185013799161010513020071690156991715105124300717801829917317,4119976153©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,Fe2+Cr6+Cr3+31711,,[4],K2Cr2O7,50mg/L,100mL400mL,(FeSO47H2O),20%,99%,,(FeSO47H2O)50%,5mgCr6+,0112gFeSO47H2O31712(E0Cr6+/Cr3+=1.33V),,Fe2+(E0Fe3+/Fe2+=01771V),,Fe2+Cr6+Cr3+,Cr3+,pH=14,Cr6+/Cr3+E0=-0112V[5],Fe3+/Fe2+,E0Fe3+/Fe2+=-015v,(E0=0142V),,,Fe2+Cr6+Cr3+Cr6+pH,66,,Cr6+6/gpHCr3+/mgL-1pHCr3+/mgL-1%0112412550513501359913011271155081040125991501128156508163011199180112101235091480104991901121115050101160104991901121213050111640105991931850mg/L5L(),4(1)300mg/L,/1500,99%(2),,(3),pH4(4),,111:,1987,3063082GB8978-88131()1:,1983,4147411:,1985,67735111:,1982,5905921996-04-105119976153©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.