废水微电解处理反应材料研究朱又春

:1007-8924(2001)04-0056-05废水微电解处理反应材料研究朱又春　方战强　夏志新(,　510090)　:研究了在微电解过程中不同反应材料与高电位接触材料组合的电化学特性,并讨论了反应材料和接触材料的选择等有关问题.结果表明,加入高电位的阴极性材料与反应材料接触,可增大反应材料的溶解速度达10～50倍,从而使处理废水的微电池效率显著提高.:废水处理;微电解;铁;铝;焦炭;石墨:X703.1　　:A　　(Zero-valentmetals),,().、、、、,10[1～4],[5～8],[9～12].,.:(1)、Fe2+Al3+,-,;(2)Fe2+,Fe2+、;(3)H+H,,;(4)H2O2,;(5),.,,;,.,.,()(、、),,,-,(),.,,.,,[1][3],.,,,.,,.1　试验材料和方法1.1　A3()、(L1)、SA-1(A1-3Zn-0.1Sn)SA-2(A1-4Zn-2Mg)()(HT),(T1)、:2000-06-02;:2000-10-18::(1936～),,,,.21　4　　　　　Vo1.21　No.420018MEMBRANESCIENCEANDTECHNOLOGYAgu.2001DOI:10.16159/j.cnki.issn1007-8924.2001.04.015.,:CODCr450mg/L;BOD5160mg/L;ss220mg/L;400;pH6.1.1.2　HDV-7,,1.,232,,25mV/3min.1　(M1—;M2—),,(2×50×20)mm2.2　结果和讨论2.1　,,、,/.:　FeFe2++2eAlAl3++3e　4H++4e[4H]2H2O2+2H2O+4e40H-,.(S-BWFL),,:O2N○NN○N(C2H4OCOCH3)2+6[H]NHCOCH3H2N○NN○N(C2H4OCOCH3)2+2H2ONHCOCH36,6:Cr2O72-+6Fe2++14H+=2Cr3++6Fe3++7H2OCrO42-+3Fe2++8H+=Cr3++3Fe3++4H2OCr2O72-+6e+14H+=2Cr3++7H2O,.,.,,.,.2～5.,10～30min,30min;,,:SA-1,SA-2,L1,A3;:SA-1,A3,SA-2,L1.2.2　2～5,,,.,,,.(A3),,(1～4μA/cm2),1/18.,,.,,.2.3　,.2.,———　4:·57　　　·　2　(L1)、、A33　SA-1、A34　SA-2、A35　A3、.SA-10.82～0.94V.,;,,(2～5),,.,,.,,.,,6.2,,:SA-1L1SA-2,,,A3.,表2　试验材料在废水中的稳定电位　T1A3L1SA-1SA-2E/V(SCE)0.0530.036-0.124-0.693-1.002-0.981-0.994(7).,.,.3.,3SA-1,SA-2/、L1/;A3Ig,.,.　·58　　　·　　　　　21　6　A3、L1SA-1SA-27　表3　钢、铝和铝合金与石墨偶合时的溶解速率及几种方法测定的溶解电流比较V/(g·m-2·h-1)Ia/(μA·cm-2)Icorr/(μA·cm-2)Ig(μA·cm-2)L10.001660.4930.408L1/0.0528615.7424.27(22.86)46.03SA-10.004731.4080.342SA-1/0.199159.2847.3278.33SA-20.002490.740.383SA-2/0.106231.6320.04(22.10)54.82A30.03623.4681.546A3/0.32230.8939.3641.53HT0.525350.4HT/0.502948.258　、、2.4　3:、、.3..,SA-1SA-1/.A3/SA-1/,,,.,SA-1/78.33μA/cm2,A3/41.53μA/cm2,;,0.974mol/(m2·h)0.775mol/(m2·h),1/4,.SA-2/L1/0.682mol/(m2·h)0.573mol/(m2·h),A3/.,pHSA-1A3().,,,.,.　4:·59　　　·　,,;,,(),.,(),.3　结论1),A3、():,SA-1,A3SA-2,L1,.2),(10～50).,,,.3),:SA-1/()A3/().=1∶1～20.4),,.,,.[1]FeofanovVA,PilotBV,ZhdanovichLP,etal.Processandapparatusforpurifyingeffluentsandliquors[P].USPat:4525254,1985-06-25.[2]FennellyJP,RobertsAL.Reactionof1,1,1-Tri-chloroethanewithzero-valentmetalsandbimetallicreductants[J].EvironSciTechnol,1998,32(13):1980～1988.[3],-[J].,1991,(1):17～19.[4],　,,.[J].,1988,8(6):330～333.[5]KonstantourosE.Methodofregeneratingammoniacalet-chingsolutionusefulforetchingmatalliccopper[P].USPat:4280887,1981-07-28.[6].[J].,1989,11(1):32～35.[7].[J].,1995,17(4):41～43.[8],.[J].,1999,(3):12～13,16.[9]JohnsonTL,ScheresMM,TratnyekPG.Kineticsofhalogenatedorganiccompounddegradationbyironmetal[J].EnvironSciTechnol,1996,30(8):2634～2640.[10]BurrisDR,CampbelTJ,ManoranjanVS.Sorptiontrichloroethyleneandtetrachloroethyleneinabatchreactionmetalliciron-watersystem[J].EnvironSciTechnol,1995,29(11):2850～2855.[11]　,,.[A].[C].:,1997.121～122.[12],,,.-[J].,1994,15(1):39～41.Studyonthereactionmaterialsformicro-electrolysistreatmentofwastewaterZHUYouchun,FANGZhanqiang,XIAZhixin(DepartmentEnvironmentalEngineering,GuangdongUniversityofTechnology,Guangzhou510090,China)Abstract:Theelectrochemicaldissolutioncharacteristicofdifferentcombinationsofreactionmaterialsandcontactmaterialswithhighpotentialduringmicro-electrolysisofwastewaterwerestudied.Theresultsindicatethatdissolutionrateofreactionmaterialscanbeincreasedby5～10timeswhilethesuitablecathodicmaterialswithhighpotentialwerejointedinthereactorandcoritactedwithreactionmetals,andtheeffectivenessofmicro-cellforwastewatertreatmentcanbeincreasedremarkably.Keywords:wastewatertreatment;micro-electrolysis;iron;aluminum;coke;graphite　·60　　　·　　　　　21