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910Vol.9No.10201510ChineseJournalofEnvironmentalEngineeringOct.2015213125。Fenton、、4、pHORP。Fenton80%pH60%。pH。4ORP。X703A1673-9108201510-4910-05ChemicaloxidationforgroundwaterremediationYinZhenLiaoShulinMaQiangZhangJinfengLiYuezhongWangQingguoJiangsuWELLEEnvironmentalCo.LtdChangzhou213125ChinaAbstractChemicaloxidationasaremediationtechnologyforgroundwaterpollutionhasattractedgreatat-tentioninrecentyears.FourextensivelyusedoxidantsFentonreagentactivatedsodiumpersulfatepotassiumpermanganateandsodiumhypochloritewereinvestigatedfortheiractivitiesintheremovaloforganicpollutantsandtheireffectsonthepHandredoxpotentialORPofgroundwaterwhichwascontaminatedwithpesticides.TheresultsshowedthatthehighestremovalefficiencyoforganicsoccurredinthetreatmentswithFentonreagentandactivatedsodiumpersulfate.Morethan80%ofpollutantscanbeeffectivelyremovedaftertreatmentofthesetwooxidants.MeanwhilethepHofgroundwaterdecreasedtosomeextentwhencomparedwiththatofpretreat-ment.Asforthetreatmentswithpotassiumpermanganateandsodiumhypochloriteonly60%ofpollutantscanberemovedbutnoeffectonthepHofgroundwaterwasobservedinthetreatmentwithpotassiumpermanganate.Howeversodiumhypochloriteshowedlowactivityforbromobenzeneremovalandevennoactivityforchlorinetolueneremoval.Furthermorethetreatmentwithsodiumhypochloritecouldmakethegroundwaterbecomestronglyalkaline.TheORPofgroundwaterincreasedimmediatelywhenanyofthefouroxidizerswasadded.Keywordsgroundwaterorganicpollutionchemicaloxidationremediation2014-07-032014-10-071987—。E-mailyinzhen015@163.com12。。34。5。、67。89。1011。Fenton、、4pHORP。1011.14℃pH7.41ORP230mVCOD700mg/L29700μg/L410μg/L5230μg/L108μg/L165μg/L51μg/L563μg/L38000μg/L192μg/L。1.28421。1LFenton、、48h。pHORP。48h。1Table1ListoftreatmentsFenton1H2O2FeSO4·7H2O30%0.5mol/L0.08mol/L0.008mol/LFenton2H2O2FeSO4·7H2O30%0.5mol/L0.16mol/L0.016mol/L1FeSO4·7H2O0.5mol/L0.5mol/L0.017mol/L0.0073mol/L2FeSO4·7H2O0.5mol/L0.5mol/L0.034mol/L0.0146mol/L10.2mol/L0.025mol/L20.2mol/L0.05mol/L14.2%0.084%24.2%0.168%1.31L50g60mL310mL1mL。P&T-GC/MS7890A-5975CGC-MS12。50℃2min25℃/min265℃6℃/min285℃10℃/min320℃2min。45℃1min30℃/min150℃50℃/min220℃1.5min。EI230℃。22.142。14。Fenton95%、、、、、100%99%GallardH.13Fenton。FentonFe2+H2O2·OH。80%80%~85%85%。0.034mol/L0.017mol/L。FentonSO-4·E=+2.6V·OHE=+2.8V14。、、100%、90%15。60%。21。、CC。100%60%119491Fig.1Removalratesofpollutantsusingdifferentoxidants。2。O。2.2pHpH。2pHpH2pHFig.2ChangesofpHduringprocessofchemicaloxidation2pH。pHpH。pHpH4.5~5S2O2-8SO-4·H+pH16。pH24hMnO2OH-pH。pHpH12~13pH11.5pHpH。pH17。219410pHpH。2.3ORP3。Fenton450~600mV。ORP。600mV。。3400~650mV。Fe2+、·OH、H2O2、Fe3+。ORP。3ORPFig.3ChangesofORPduringprocessofchemicaloxidation31Fenton。Fenton95%80%。pHORP。2、、100%60%。100%。2。34Fenton>>>。Fenton。1.Ⅱ-.20062231-8TangKewangWuYuchengHouJie.AssessmentofgroundwaterqualityinChinaⅡ.Groundwaterqualityandpollutionanalysis.WaterResourcesProtection20062231-8inChinese2..20071517-18SunXuetao.Thinkingandmeasuresforstrengtheninggroundwatermanagement.ChinaWaterResources20071517-18inChinese3..20133372004-2011WangLiminJiangYonghaiZhangJinbaoetal.Healthriskassessmentoforganochlorinepesticidepollutioninsoilandgroundwaterofatypicalagriculturalactivearea.ActaScientiaeCircumstantiae20133372004-2011inChinese4..201430276-79HeXiaominShiMinfangLiAiminetal.Healthriskas-sessmentoforganophosphoruspesticidescontaminatedsoilandgroundwaterinanabandonedfactorysite.Environmen-talMonitoringinChina201430276-79inChinese5.31949.2009293474-481XueYuqunZhangYoukuan.TwofoldsignificanceofgroundwaterpollutionpreventioninChina’swaterpollu-tioncontrol.ActaScientiaeCircumstantiae2009293474-481inChinese6AnYongleiZhangLanyingLiuNaetal.Fieldscalea-nalysisonstructuralchangesofmicrobialcommunityanditsrelationshipswithenvironmentalfactorsinnitrobenzene-contaminatedgroundwaterduringairspargingremediation.EnvironmentalEngineeringandManagementJournal20121191687-16967PhillipsD.H.VanNootenT.BastiaensL.etal.Tenyearperformanceevaluationofafield-scalezero-valentironpermeablereactivebarrierinstalledtoremediatetrichlo-roethenecontaminatedgroundwater.EnvironmentalScience&Technology201044103861-38698.-Fenton.201044809-812RenBaixiang.Researchondegradationofdyeindustrywastewaterbyultrasonic-Fentonprocess.ChineseJournalofEn-vironmentalEngineering201044809-812inChinese9..201332154-64YangBinYingGuangguoZhaoJianliangetal.Re-searchprogressontheoxidationofemergingorganiccon-taminantsbyferrateⅥ.EnvironmentalChemistry201332154-64inChinese10..2011323857-863ZhaoDanLiaoXiaoyongYanXiulanetal.Chemicaloxidantsforremediationofsoilscontaminatedwithpolycy-clicaromatichydrocarbonsatacokingsite.EnvironmentalScience2011323857-863inChinese11.-12-.2014841434-1437LiMengjiaoLiuFeiChenHonghanetal.Removalof12-dichloroethaneingroundwaterwithsiderite-catalyzedhydrogenperoxideandpersulfatesystem.ChineseJournalofEnvironmentalEngineering2014841434-1437inChinese12.GC/MS.2006WangYufan.MethodofGC/MSdevelopedforsurveyonorganiccontaminatantaingroundwater.BeijingDoctorDissertationofChinaUniversityofGeosciences2006inChinese13GallardH.DeLaatJ.Kineticsofoxidationofchloroben-zenesandphenyl-ur
本文标题:化学氧化技术在地下水修复中的应用
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