2利用废铁屑和粉煤灰的电化学原理处理印染废水的方法研究

:2002206227;:2002212210:(1969-),,,1,,(,510700):,,pH410,30min,5%6%,CODcr400mgöL,77%,95%,:;;:X70311:A:100226002(2003)0120047203ThestudyoftreatingdyewastewaterwithironscrapsandflyashforelectrochemistryprincipleWUWen2bo,LINGJie,HANTong2chang(GuangzhouHarbourBureauEnvironmentalMonitoringStation,Guangzhou510700,China)Abstract:Animprovedmethodtotreatdyewastewaterusingironscrapswaspresented1Analysiswasgiventothemechanismoftheprocess1TheresultshowedthatwhenthepHvaluewas410,thetimeoftreatmentwas30minutes,theamountofironscrapsandflyashwere5%and6%respectively,CODwasreducedtounder400mgöL,theremovingrateanddecoloringratewereover77%and95%1Itwasprovedthatthismethodwashighlyeffectiveandfeasibleforpretreatmentofdyewastewater1Keywords:ironscraps;flyash;dyewastewater,116108töa,2215%,42%[1]CODcr,Fenton,,,,CODcr400mgöL,77%,95%1111,,,,:Hg,,,HgPb,Pb,(6)HgPb,HgPbHg,Pb,HgPb(7)HgPbHgPb,HgPb,(8)(HgPb),HgPb,,HgPb191Vol119No1120032EnvironmentalMonitoringinChinaFeb12003(Fe):Fe-2e=Fe2+,(C):2H++2eH2,O2+H2O+2e2OH-Fe2+,,(),112,(-N=N-)Fe2+:4Fe2++R2N=N2R+4H2ORNH2+RNH2+4Fe3++4OH-,113(),pH,(-SO3H)(-COOH)114H+,,Fe2+,H+,,:FeO+2H+Fe2++H2O115Fe2+Fe3+,pHO2,Fe(OH)2Fe(OH)3Fe(OH)3,2211:7821;PHS23C;721:(FeSO4(NH4)SO46H2O),AR;(K2CrO7),AR;(H2SO4),AR;(Ag2SO4),AR;(HgSO4);,36%38%;;::212CODcr-PH-PHS23C-2,,(010101005)213:20,1%,,,100ml,pH,,3311pH,3,L9(34),121ABCD122056233044344065A-pH;B-,min;C-,%;D-,%,2,CODcr,:pH2,,:pH=4,t=30min,5%,6%,3312,CODcr,44,,CODcr318%213%84191200322ABCDpH(%)CODcr(mgöL)(%)CODcr(%)12205641959315693197821625813722304451139715745134901435512932406551309417788160841965216943204551769715590132901436415953306661001004591649513172143634054610610049111895131701547420646178981855412892197661758430556141100491118951317015494404651211004501649513172197k1166135189171199145203177k2207156198126192185192158k3210126196120191187187182R4319181557158151953CODcr(mgöL)(%)pHCODcr(mgöL)(%)pHCODcr(%)(%)1231667166716675112511251124443741023831043781521001001006130612661267715677102771299513195131951314CODcr(mgöL)CODcrCODcr(%)(%)1231667166716674031414081424051913741023831043781527515075180751657715677102771299110291141911809513195131951314,,Fe2+,pHpH=4,30min,95%,,CODcr318%213%,,,,,:[1],,.[J].,2000(10):3.[2],,,.-[J].,1994(5):54259.[3],,,.[J].,1995(3);15721611[4],,.--[J].,1994(1):20223.94: