催化电解对垃圾渗滤液中氨氮去除的试验研究

26320076()JournalofLanzhouJiaotongUniversity(NaturalSciences)Vol.26No.3Jun.2007:1001O4373(2007)03O0035O03*李明1,杨勇2,季民3,刘瑞聪4(1.,300072;2.,300060;3.,300072;4.,266033):采用镀钌/铑/锆稀土金属的钛网作阳极的催化电解法,对垃圾渗滤液中氨氮具有很强的催化电解作用试验结果表明,当渗滤液中氨氮为500mg/L以上,在3cm的极板间距,初始pH为8,电流密度为8A/dm2的条件下,电解120min,渗滤液中氨氮几乎可全部去除.:催化电解;垃圾渗滤液;深度处理:X705:A0[1~3].,[4].,..,COD.1,.,.,DSA(DimensionallyStableAnode)DSE(DimensionallyStableElectrode).DSA,Ch.Comninellis[5]SnO2/Ti,,CO2,.RuO2/Ti,,,.RuO2/Ti,.,,.//,,()(),;/,,..22.1,L@B@H=200mm@75mm@155mm,2.325L.,75mm,,1mm,75mm.0~30V,0~3ADH1715O5.2.2.:*:2007O01O06:(1972O),,,.()26CODCr:789~1602mg/LBOD5:29.7~100mg/LNH3-N:411~538.7mg/LCl-:1542.8~1923mg/LpH:8~9.2.31)CODCrBOD5Cl-,56(1996);2)pH:HI9321pH.33.1pH,pH3,4,5,6,7,8,9,15A/dm2,3cm,60min,,1.1pHFig.1InfluenceofoptimumpHonremovalrateofammonianitrogen1,pH;pH3~6,,50%,pH7~899%;pH9,.pH8,pH.3.2,pH8,5,6,8,10,12,15A/dm2,3cm,30min,,2.2,3,COD,,;.COD=789.23mg/L,=2,Fig.2Curveofvariationsofammonianitrogenremovalrateindifferentelectrolyticcurrentdensity3,CODFig.3CurveofvariationsofCODremovalrateindifferentelectrolyticcurrentdensity521.08mg/L,15A/dm2,60min,99%,4.86mg/L;COD29.8%,COD553.99mg/L;150min,100%,0mg/L;COD67.5%,COD256.3mg/L.Marincic[6],pH8,,,/.,,.,,.,8A/dm2.,COD1184.6mg/L,532mg/L,120min,100%,0mg/L;COD44.9%,COD652mg/L;150min,100%,0mg/L.COD63.5%,COD432mg/L.3.3363:,pH8,7.5A/L,3,9,15cm,60min,,4.4Fig.4Influenceofelectrodespacingonremovalrateofammonianitrogen4,,.,,.41)3cm,pH8,8A/dm2,120min,532mg/L0,100%.2),,..:[1].[J].,1998,15(3):63O66.[2].[J].,2000,21(2):35O38.[3].[J].,2000,28(5):45O47.[4].[M].:,2002.[5]SimondO,SchallerV,ComninellisCh.Theoreticalmodelfortheanodicoxidationoforganicsonmetaloxideelectrodes[J].ElectrochimicaActa,1997,42:2009O2012.[6]Marincic.ElectroOoxidationofammoniainwastewater[J].Jappl.Electrchem,1978,8:333O345.StudyofAmmoniaNitrogenRemovalintheLandfillLeachatebyElectrocatalysisLiMing1,YangYong2,JiMin3,LiuRuicong4(1.AcademyofArchitecturalDesign&Research,TianjinUniversity,Tianjin300072,China;2.TianjinBinhaiMunicipalEngineeringConstruction&DevelopmentCo.ltd,Tianjin300060,China;3.SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China;4.QindaoCNNEPEnvironmentalCo.ltd,Qindao266033,China)Abstract:AternaryRhOZrORuoxideOcoatedtitaniumanodefixedinalabOscaleelectrocatalysisreactorwasusedtoremovetheammonianitrogenintheleachate.Theresultsshowedthatundertheoperatingcond-itionsof3cmelectrodegap,8A/dm2currentdensityandtheoptimumpHof8,almostalltheammonianitro-gen,whichwasover500mg/L,wasremovedafterelectrocatalysisfor120min.Keywords:electrocatalysis;landfillleachate;advancedtreatment37