电絮凝法处理纺织废水研究

1253－54．26WUFengchangWANGuojiangCAIYu-rong．Biogeochemicalprocessesatthesediment-waterinterfaceJ．AdvancesinEarthScience1996112191－197．27LIANGHuifengMAZichuanZHANGJieetal．StudyontheremovalofAsⅢinwaterbythenascentmanganesedioxideJ．EnvironmentalPollutionandCon-trol2005273168－171．StudyonthemigrationbehaviorsofAsIIIandAsVinthebonecharusingtheone-dimensionalconvection-dispersionequationHUANGXi1LUOYang2ZHANGJun2LIUJuan1YANGJian1LIUJing11TheKeyLaboratoryofSolidWasteTreatmentandＲesourceMinistryofEducationSouthwestUniversityofScienceandTech-nologyMianyang621010SichuanChina2TheWaterＲe-sourcesofWaterEnvironmentMonitoringCenterinHaiheＲiverBasinTianjin100017ChinaAbstractThearticleisaimedtointroduceourOne-DimensionalConvection-DispersionEquationforanalyzingthemigrationbehav-iorsofAsIIIandAsVinthebonecharandthecorrespond-ingdesorptionexperimentswehaveperformed．Theresultsofourinvestigationandexperimentsshowthat1ItispossibleforLangmuirmodeltobeusedtodescribethebatchexperimentalda-taappropriatelyandachievethecorrespondingcorrelationcoeffi-cientsＲ2are0.98forAsIIIand0.97forAsV．Theob-tainedmaximumadsorptioncapacitiesqmaxofAsIIIandAsVturnedouttobe0.827and0.337mg/grespectively．2TheresultoftheadsorptioncycleexperimentsforsingleAsIIIandAsVshowsthatthecapacityforretardingthebonecharonAsIIIandAsVtendstodecreasewiththeincreaseofthead-sorptioncycles．AndtheretardationfactorsofAsVworkedoutbytheconvection-dispersionequationmodelforthethreecontinu-oustimesareequalto50.6245．99and31．51thatis1．38－2．20timesashighasthatofAsIII．3TheexperimentswithMn2+andAl3+coexistingcationsshowthatitispossibleforthecoexistingcationstoimprovethecapacitiesofretardationofbonecharonAsIIIandAsVwithMn2+presentingstrongereffectsthanAl3+andthecapacitiesofretardationofbonecharonAsVbeingstrongerthanAsIII．Atthesametimewehavedonecarefulobservationofthe“concave”zoneinthebreak-throughcurvesofexperimentsofAsVduetothe“secondaryadsorption”．ThusithasbeenfoundthattheconcavezoneofbreakthroughcurvesforexperimentsofAl3+coexistingcationstendstocomeoutearlierthanMn2+．InadditiontheeffectsofanionsonthebreakthroughcurvescanobviouslybedifferentfromcationsforthecoexistinganionswouldactcompetitivelywithAsIIIandAsVduetotheirsimilarmolecularstructureande-lectrostaticadsorptionfeatureespeciallythoseofPO3－4．4There-adsorptiveabilityofbonecharfillingcolumndecreasesfrom21．28mgto13．09mgand21．90mgto13．62mgforAsIIIandAsVwithadsorptiontimesrespectively．Thereforethedesorptionof0.1mol/LNaOHsolutionprovestobemuchbetterthanthedistilledwater．Inadditionthemeancumulativedesorptiondegreesshouldbe0.59and0.41forAsVandAsIIIrespectively．Keywordsenvironmentalengineeringarsenicbonecharmi-grationconvection-dispersionequationCLCnumberX523DocumentcodeAArticleID1009-6094201403-0210-061009-6094201403-0215-05*陶陪1，高艳娇2，张志鹏3，黄润竹2131500021210013130021、pH、、COD、、。pH7、pH8pHCOD、、7.5mA/cm2COD72%89.1%15minCOD76%90%。pH7.5mA/cm215min。X506ADOI10.13637/j．issn．1009-6094.2014.03.048*[e-mail]。201301C50070040COD1000mg/L1。、2－4。、。、、5－6。。、、。。7。、、、8－11。。、pH、、。51214320146JournalofSafetyandEnvironmentVol．14No．3Jun．2014、、pH、。1500t。COD3000mg/L500pH。。1。、、62mm、62mm、120mm4、10cm30V6A。25℃。。200r/min。30minCOD。。NaOHH2SO4pH。。22.1pHpHpHpH。、pHpH、COD、、。COD3122mg/L500pH3、5、7、9、11pH、COD、2～4。2pHpH。pH7pHpH7pH。pH。3pHCODpH3COD65.2%pH11COD32.3%。pHCODpH3COD48.1%pH7COD76.2%pH11COD26.2%。4pHpH390%pH1150.6%。pHpH365.4%pH791.2%pH1176.7%。pH7COD76.2%91.2%pH3COD65.2%90%。CODpH。pH3、5、7、9、1156。1Fig．1Schematicdiagramoftheexperimentalsetup2pHpHFig．2EffectofinitialpHvalueonfinalpHvalue3pHCODFig．3EffectofinitialpHvalueonCODremovalrate4pHFig．4EffectofinitialpHvalueonchromaremovalrate5pHpH=30.85kW·h/kgCODpH=111.65kW·h/kgCOD。pHpH8。pH6～8。pHpH7。6pH612Vol．14No．31430.1kg/kgCOD0.2kg/kgCOD。pHpH9。pH6～8。。2.2COD、、。75mA/cm215mA/cm2COD11%65%。5mA/cm27.5mA/cm2COD57%72%72%。COD7.5mA/cm2。COD。85mA/cm215mA/cm232.4%94%。5mA/cm27.5mA/cm2COD70%89.1%90%。7.5mA/cm2。。95mA/cm215mA/cm21.2kW·h/kgCOD2.0kW·h/kgCOD0.55kW·h/kgCOD0.82kW·h/kgCOD。5pHFig．5EffectofinitialpHvalueonenergyconsumption6pHFig．6EffectofinitialpHvalueonelectrodeconsumption。105mA/cm215mA/cm20.09kg/kgCOD0.20kg/kgCOD0.11kg/kgCOD0.26kg/kgCOD。。。2.3。7CODFig．7EffectofcurrentdensityonCODremovalrate8Fig．8Effectofcurrentdensityonchromaremovalrate9Fig．9Effectofcurrentdensityonenergyconsumption10Fig．10Effectofcurrentdensityonelectrodeconsumption71220146Jun．2014COD、、。115min30minCOD24.7%66.2%COD5min60%15min76%。COD。15min。125min30min5min50%20min92%5min71.2%15min90%。。15min。135min30min1.25kW·h/kgCOD2.6kW·h/kgCOD0.31kW·h/kgCOD2.0kW·h/kgCOD。、。145min30min0.15kg/kgCOD0.42kg/kgCOD0.12kg/kgCOD0.56kg/kgCOD10min10min。15min0.25kg/kgCOD0.18kg/kgCODkg。31、、。COD。2pH、pHpHpHpH8.0pH。pH。3、CODCOD。7.5mA/cm2COD72%89.1%。4、COD11CODFig．11EffectofelectrocoagulationtimeonCODremovalrate12Fig．12Effectofelectrocoagulationtimeonchromaremovalrate13Fig．13Effectofelectrocoagulationtimeonenergyconsumption14Fig．14EffectofelectrocoagulationtimeonelectrodeconsumptionCOD。15minCOD76%90%。5pH7.5mA/cm215min。Ｒeferences1BISSCHOPSISPANJEＲSH．Literaturereviewontextile812Vol．14No．3143wastewa