负载型二氧化铈催化氧化对滤后水THMsFP的影响

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

42820108JOURNALOFHARBININSTITUTEOFTECHNOLOGYVol.42No.8Aug.2010THMsFP12121.300071lujinfeng@nankai.edu.cn2.150090CeO2THMsFP.THMsFP57.0%.CeO2TOC.Br-、THMsFP.CeO2THMsFP.0.7mg·L-1CeO2THMsFP64.9%.X703.1A0367-6234201008-1323-05EffectofcatalyticozonationwithsupportedceriumoxideonTHMsformationpotentialoffilteredsurfacewaterLUJin-feng1MAJun2QIANMin-lei1ZHAIXue-dong21.CollegeofEnvironmentalScienceandEngineeringNankaiUniversityTianjin300071Chinalujinfeng@nankai.edu.cn2.SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090ChinaAbstractThisworkinvestigatedthetrihalomathenesformationpotentialTHMsFPoffilteredsurfacewateraftercatalyticozonationinthepresenceofceriumoxidesupportedonaluminaCeO2/Al2O3/O3inacontinu-ousflowreactor.CeO2/Al2O3/O3oxidationcausedareductionofTHMsFPofthefilteredwaterby57.0%comparedwithozonationalone.ItisrelatedtothehigherTOCremovalandmorehalogenreactivesitesde-structionduringcatalyticozonationwithsupportedCeO2.ThebromideconcentrationcontacttimeandozoneconcentrationwerefurtherstudiedduringCeO2/Al2O3/O3oxidation.Thecatalyticozonationshowedasignifi-cantadvantageoverozonationincontrollingTHMsFPofthewateratconditionsappliedinthisexperiment.Infactlowozonedosageof0.7mg·L-1inthecatalyticozonationcanbringaboutareductionofTHMsFPofthefilteredwaterby64.9%comparedwithozonationalone.Keywordscatalyticozonationceriumoxidesupportedtrihalomathenesformationpotentialcontinuousflow2009-10-03.10JCYBJC035002009ZX07424-00665010371.1980—1962—.、.1-2.NOM.NOMDBPsTHMsTHMsFP.FeOOH、CeO2THMsTHMsFPTHMsFP3.THMsTHMsFP.CeO2THMs3.CeO2THMsFPTHMsFP.11.13.、、.1μm1.Br-THMsKBr.1.1TOCmg·L-1UV254cm-1SUVAL·m·mg-1CaCO3mg·L-1NTUpHρBr-mg·L-1℃3.12~4.270.071~0.0852.28~1.9976.50.4-0.67.6~8.0<0.0517~18213410765108592%KI1.氧气瓶;2.臭氧发生器;3.滤后水;4.蠕动泵;5.阀门;6.砂芯曝气板;7.单独臭氧反应柱;8.催化氧化反应柱;9.尾气吸收装置;10.出水口.1G-3.Al2O3..XFZ-58I.O3——5h.KI.0.5135h.O3KI.1.2pH=1~2Al2O324h500℃2h.X-CeO2.1.3THMsFPAWWAStandardMethod1992.1μm200mL20mg·L-125℃48hMTBESigma-Aldrich.THMsUSEPAMethod551.1.Agilent6890ECDDB-530m×0.25mm.TOCTOCVPHTOCBr-Dionex4500iIONPACAS4-SCcNaHCO3/NaCO3=1.7/1.8mmol·L-1v=1.0mL/min.20.5135h44THMsFP0.5135h4THMsFP.2.1THMsFPO3Al2O3CeO2CeO2/Al2O3/O3THMsFPCeO2/Al2O3/O3O32.CeO2/Al2O3/O3THMsFP32.1%O357.03%.CeO2/Al2O3/O3CHCl3、CHCl2Br、CHClBr2CH-·4231·42Br341.7%63.3%49.0%67.6%.CeO2THMsFP1.CHCl3CHClBr2CHCl2BrCHBr3400350300250200150100500滤后水O3CeO2/Al2O3/O3THMsFP/(滋g·L-1)[O3]=3.50±0.25mg·L-1;[Br-]0=2mg·L-1;停留时间9.8min;t=18℃.2THMsFP、CeO2TOC2.TOC8.73%~12.7%CeO257.67%~60.58%TOC.THMsFPTOC.4TOC.CeO2/Al2O3/O3THMsFPTOCCeO2TOCCeO2TOC20.37%~28.57%.CeO2TOCO3.CeO2.CeO2“”CeO2CeIVLewis.CeO2.CeIVO—C56.NOM、CeO2CeO2THMsFP.CeO2/Al2O3/O3TOCTHMsFPCeO2/Al2O3/O3THMsFPTOC.CeO2TOCTHMsFPCeO2NOM、NOMTHMsFP.2、TOCO3TOC/mg·L-1TOC/%CeO2/Al2O3/O3TOC/mg·L-1TOC/%CeO2/Al2O3TOC/mg·L-1TOC/%0.5h3.458.731.4960.582.7028.571h3.3810.561.5858.202.8923.543h3.3012.701.5359.522.8025.935h3.419.791.6057.673.0120.373.3910.321.5558.992.8524.60TOC=3.78mg·L-14TOC.2.2THMsFPBr-、7.Br-THMsFPKBr500℃2hBr-01.02.03.0mg·L-1.4THMsFPBr-3.Br-CHCl3THMsBr-2~3mg·L-1Br-8.Br-CeO2/Al2O3/O3THMsFPCHCl3CHBrCl2Br-Br-=1mg·L-1CHBrCl2CHBr2ClCHBr3Br-CHBr3CHBr2Cl.0~3mg·L-1Br-CeO24THMsFP·5231·8THMsFP.Br-CeO2THMsFP.Br-CeO2CHCl370.4%O3Br-CeO2THMsBr-=3.0mg·L-1CHBrCl2、CHBr2Cl、CHBr377.3%59.3%57.0%.Br-CeO2/Al2O3/O3THMsFP.单独臭氧CHCl3FP催化氧化CHCl3FP单独臭氧CHCl2BrFP催化氧化CHCl2BrFP单独氧化CHClBr2FP催化氧化CHClBr2FP单独氧化CHBr3FP催化氧化CHBr3FP2502001501005000.51.01.52.02.53.03.5籽(Br-)/(mg·L-1)籽/(滋g·L-1)O3=3.50±0.25mg/L9.8mint=18℃.3THMsFP2.3THMsFPTHMsFP4.THMsFP.NOM、THMs9.5.6minTHMsFPTHMsFP.CeO2/Al2O3/O3CeO2CeIVLewisCeO2/Al2O3/O3、THMsFP.2.4THMsFP3O3CeO2THMsFP5.O3CeO2/Al2O3/O34504003503002502001501005003.95.69.8停留时间/minTHMsFP/(滋g·L-1)[O3]=3.50±0.25mg·L-1;[Br-]0=2mg·L-1;t=18℃.4THMsFPO3CeO2THMsFPO3=3.5mg·L-1mO3/mTOC0.93CeO2THMsFP.O3NOMTHMs9.mO3/mTOC≈1O310.THMsFPO3=3.5mg·L-1mO3/mTOC0.93mO3/mTOC≈1.O3O3THMsFP.O3O3THMsFP.O3CeO24THMs5.O3CHBr2ClO33.5mg·L-15mg·L-1CHBr3THMs.O32~5mg·L-1CHBr311.CeO2O3CHBr3O3CeO2CHBr2Cl73.2%CHBr2ClTHMs.3O3CeO2/Al2O3/O3THMsFP.O3=0.7mg·L-1·6231·42CeO2THMsFPTHMsFP64.9%.O35mg·L-1THMsFP.O3<1mg·L-1CeO2/Al2O3/O3THMsFP.CHCl3CHClBr2CHCl2BrCHBr3350300250200150100500.73.55.0籽(O3)/(mg·L-1)(a)臭氧氧化THMsFP/(滋g·L-1)CHCl3CHClBr2CHCl2BrCHBr33503002502001501005000.73.55.0籽(O3)/(mg·L-1)THMsFP/(滋g·L-1)[Br-]0=2mg·L-1;停留时间9.8min;t=18℃.(b)CeO2催化臭氧氧化5CeO24THMs31CeO2/Al2O3/O3THMsFPTOCTHMsFP.2Br-0~3mg·L-1Br-CeO2/Al2O3/O3THMsFPO3.Br-Br-CeO2/Al2O3/O3THMsFP.3THMsFPTHMsTHMsFP.4O3=0.7~5.0mg·L-1CeO2THMsTHMsFP.O3CeO2THMsFPCeO2/Al2O3/O3O3.1ORMADMPMIQUELNLANAOMetal.Effectofapplicationofozoneandozonecombinedwithhydrogenperoxideandtitaniumdioxideintheremovalofpesti-cidesfromwaterJ.OzoneSciEng201032125-32.2ZHAOLMAJSUNZetal.Mechanismofheteroge-neouscatalyticozonationofnitrobenzeneinaqueousso-lutionwithmodifiedceramichoneycombJ.AppliedCatalysisBEnvironmental2009893/4326-334.3ZHANGTMAJLUJetal.CatalyticozonationwithmetaloxidesAnoptiontocontrolTHMsformationpo-tentialJ.WaterSciTechnolWaterSupply20066363-70.4ZHANGTLUJMAJetal.Fluorescencespectro-scopiccharacterizationofDOMfractionsisolatedfromafilte

1 / 5
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功