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,,,,(,518060)[],Al3+、Fe3+,,、pH、,,、、、,。[];;[]O646;X703.1[]A[]1005-829X(2012)12-0011-06Wastewatertreatmentusingelectrocoagulationtechnology:areviewZhangFengzhen,YangBo,ZhangHong,ZhaoXuxin,LiuJianhong(DepartmentofEnvironmentalScienceandEngineering,SchoolofChemistryandChemicalEngineering,ShenzhenUniversity,Shenzhen518060,China)Abstract:Theprinciplesandcharacteristicsoftheresearchprogressinwastewatertreatmentbyelectrocoagulationaresummarized.TheprocessesofhydrolyzingandpolymerizationofAl3+,Fe3+areanalyzed,andthefunctionsofrele-vantinfluencingfactorsarediscussed,includingelectrodematerials,pH,currentdensity,etc.Inaddition,someen-gineeringapplicationsoftheelectrocoagulationtechnologyarereviewed,includingtheremovalofchromium,phos-phorus,fluorineions,dyepollutants,etc.Theexistingproblemsintheaboveresearchesandapplicationsandthede-velopingtrendsofthistechnologyinthefuturearebroughtforward.Keywords:electrocoagulation;flocculationmechanism;wastewatertreatment,,〔1〕。、、、、、(TDS),、、。,1889〔2〕。1906,A.E.Dietrich,〔2〕。、、,。,,,,,,。1、、。M.Y.A.Mollah〔3〕,,,。,。,OHˉ,pH;,OHˉH+,pH,,〔4〕。,[](21177089,10975101);863(2009AA063902)3212201212IndustrialWaterTreatmentVol.32No.12Dec.,201211、,,O2H2(60μm,),PAM。COD。,。Al,Al3+Al(H2O)63+,H+,,Al(H2O)5OH2+、Al(H2O)4(OH)2+、Al(H2O)3(OH)3。,,,,,Alm(H2O)x(OH)n(3m-n),Al2(H2O)8(OH)24+、Al16(H2O)24(OH)3612+,〔Al(OH)3〕n。A.Sarpola〔5〕80(Al2~13)19(Al10~27),,45(Al1~12)9(Al10~32),32。,Alm(H2O)x(OH)n(3m-n),,Al13O4(OH)247+,NaCl,NaCl〔Al2(OH)3(H2O)3·2.05NaCl〕3+、〔Al3(OH)6(H2O)8·2.00NaCl〕3+。,,〔6〕3013,。,;、,,,,。Al,pH、Al3+、、、。,,,pHAl(OH)4-。JinmingDuan〔7〕,pH:pH6.5,Al3+60μmol,Al3+Al(H2O)63+Al(H2O)5(OH)2+、Al(H2O)4(OH)2+,;pH6.5,Al3+60μmol,Al3+〔Al(OH)3〕n,。,Alm(H2O)x(OH)n(3m-n)SO42-〔8〕〔Al(OH)3〕n。Al3+,OHˉ,,,。。,,,。,pH、。D.Lakshmanan〔1〕,Fe2+pH6.5~7.5,DOFe2+,DO,Fe2+Fe(OH)3/FeOOH;pH=8.5,Fe2+Fe3+Fe(OH)3/FeOOH,Fe3+Fe(H2O)63+,—OHFe(H2O)5(OH)2+、Fe(H2O)4(OH)2+。,γ-FeOOH。pH,,pH6~10γ-FeOOH。D.Lakshmanan〔9〕,2min,pH=8.5,Fe3+γ-FeOOH。2,,,。〔10〕;、。2012-12,32(12)122.1、、,Fe3+,。、、,、,,COD〔11〕,Fe3+。、,I.Heidmann〔12〕-Ni2+、Cu2+、Cr6+(2.0、2.5、0.7g/L),3h,,-、、Cr6+99%、85%、47%。。0.5~2.5cm,1~2mm,。I.Zongo〔13〕(),2.0cm,,;,。。,,1、2。1;,,,。,,;,。22.2pHpH。pH,〔14〕。,pH,,,,。pH(pH6~10)。,pH,pH〔15〕,pH:,pH7.5〔9〕;Cr3+pH5.0〔16〕;FˉpH6.0〔17〕;pH8.5〔18〕。WeiWan〔15〕pH,,As()0.1mg/L,pH=7,15minAs()0.001mg/L;pH=9,120minAs()0.001mg/L。S.Vasudevan〔19〕pH,,pH,pH=6.598%,pH=1260%。2.3,。,,〔9,19-20〕。Clˉ,ClˉCl2HClO,,;,Clˉ、,2012-12,32(12),:13,,。G.Mouedhen〔4〕Ni2+、Cu2+、Zn2+NaCl,NaCl0100mg/L,42V7V,。,J.L.Trompette〔21〕pH=8.0、COD800mg/L,pH,16min,NH4ClCOD84%;30min,(NH4)2SO4COD60%。,I.Heidmann〔22〕,,,。J.L.Trompette〔21〕SO42ˉ,SO42ˉAl3+,,SO42ˉ,。N.Daneshvar〔18〕:HCO3ˉ、SO32ˉ,,,ClˉHCl、HClO,。2.4、,。〔23〕(TP),TP2.5~3.5mg/L,10、20A/m2,TP0.98、1.76mg/L;40A/m2,TP0.06mg/L;100A/m2,TP。,,〔18〕:,;,。2.5,。OHˉ,,。,。〔24〕,,6.27%,65.2%,。XuZhao〔17〕As()Fˉ,15min。2.6,,、。〔25〕,、,250A/m2,0.6kW,1h,55.6%,76.2%。〔26〕H2O2(DMP),Fenton、,DMP。3、、、、,、、、。3.1、、,Cr6+、Cu2+、Ni2+〔22〕,。,,Fe2+Fe〔27〕Cr6+Cr3+,OHˉ,Fe2+Fe3+。A.K.Golder〔20〕Cr3+,,22mm,0.8L,Cr3+1000mg/L,NaCl1000mg/L,pH=3.4,487.8A/m2,40min,Cr3+2.0mg/L。,F.R.Espinoza-Quiňones〔28〕Cr6+,,5L,7cm×14cm×0.15cm,80.5cm2,pH=7.8,680A/m2,44mg/L。30min,100%,(≤0.5mg/L),1m31.7。3.2PO23ˉ、PO33ˉ、P2O74ˉPO3ˉ,90℃,42012-12,32(12)14PO43ˉ,Al3+、Fe3+AlPO4FePO4。PO33ˉ,PO33ˉ,。〔29〕,(PO43ˉ)3mg/L,4L,10cm×15cm×1mm,1.5cm,0.31A,,8min80%,0.68mg/L。,,,,,AlPO4FePO4,。,M.A.Rodrigo〔30〕,,100cm2,9mm,pH=4.5,0.75mS/cm,10A/m2,5dm3,25A·h/m3,4.5kW·h/m3,100%。3.3,Fˉ:F-OH-F-。M.M.Emamjomeh〔31〕,FˉAln(OH)m(3n-m)OH-。N.Mameri〔32〕,F-Al3+AlF63ˉ,Na+,。,V.Khatibikamal〔33〕5mg/LF-,5minF-0.35mg/L。,〔34〕,,F-7.5mg/L,,0.5cm,pH=7.1,0.48mS/cm,30~40℃,10A/m2,30min,2.13kW·h/t,F-F-(0.5~1.0mg/L)。,PO43ˉ,PO43ˉ,,Al(OH)3Al(OH)4-,;SO42ˉ,,〔35〕。3.4,,O2、H2O2(Fe2+Fenton),,。,,。,pH〔36〕,pH6.5,;pH6.5,。HuijuanLiu〔36〕-14,80A/m2,pH6~9,4min,COD85%、95%,,,。4,。,、、。、,,。、〔2〕。,,,,〔37〕。,。,,。[][1]LakshmananD,CliffordDA,SamantaG.Ferrousandferriciongen-erationduringironelectrocoagulation[J].EnvironmentalScienceTechnology,2009,43(10):3853-3859.[2]MorenoCHA,CockeDL,GomesJAG,etal.Electrochemicalreac-tionsforelectrocoagulationusingironelectrodes[J].IndustrialEn-gineeringChemistryResearch,2009,48(4):2275-2282.[3]MollahMYA,MorkovskyP,GomesJAG,etal.Fundamentals,presentandfutureperspectivesofelectrocoagulation[J].JournalofHazardousMaterials,2004,114(1/2/3):199-210.[4]MouedhenG,FekiM,dePetrisWeryM,etal.Behaviorofaluminumelectrodesinelectrocoagulationprocess[J].JournalofHazardousMaterials,2008,150(1):124-135.[5]SarpolaA,HietapeltoV,JalonenJ,etal.Identificationofthehy-2012-12,32(12),:15drolysisproductsofAlCl3·6H2Obyelectrosprayionizationmassspectrometry[J].JournalofMassSpectrometry,2004,39(4):423-430.[6],,,.[J].,2008,29(7):1903-1907.[7]DuanJinming,GregoryJ.Coagulationbyhydrolysingmetalsalts[J].AdvancesinColloidandInterfaceScience,2003,100/101/102:475-502.[8],,.[J].,1989,9(2):17-18.[9]LakshmananD,CliffordDA,SamantaG.Comparativestudyofar-senicremovalbyironusingelectrocoagulationandchemicalcoagu-lation[J].WaterResearch,2010,44(19):5641-5652.[10],,,.[J].,2004,24(1):196-198.[11]CanizaresP,JimenezC,MartinezF,etal.Studyoftheelectrocoag-ulati
本文标题:电絮凝法进行废水处理的研究进展
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