新型电极电fenton降解含酚废水的研究

《新型电极电fenton降解含酚废水的研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、摘要含酚废水是危害十分严重的工业废水之一已被美国国家环保局列入129种优先控制污染物黑名单中在我国水污染控制中也被列为重点解决的有害废水之一它对微生物具有毒性难以用通常的生物技术处理其他如化学法萃取法焚烧法等也由于技术或经济原因难以达到实际应用的水平Fenton试剂是处理难降解有机废水常用的一种高级氧化技术电Fenton是Fenton体系最有前景的方向之一而电Fenton法处理有机污染物的效率很大程度上与电极材料有关本研究选用新型电极材料IrO2/Ta2O5并合成了以碳系列材料为基材的复合电极分别将两者应用在新的电Fenton体系中处

2、理含4硝基酚和4氯酚废水为电化学处理体系中电极的选择提供了新的思路研究成果主要如下1研究了IrO2/Ta2O5电极电Fenton降解4艺条件下4硝基酚的去除率达99硝基酚的工艺条件在优化的工2研究了石墨PTFE和活性炭PTFE复合电极的制备工艺确定了PTFE为粘合剂乙醇为溶剂表面活性剂OP为分散剂和电极配比等工艺条件以及混料和膏滚压干燥切片的电极制作程序成功制备了石墨复合电极PTFE和活性炭PTFE3以4氯酚为处理对象比较研究了石墨PTFE和活性炭PTFE复合电极的吸附和电Fenton性能在实验条件下活性炭PTFE复合电极的吸

3、附性能优于石墨PTFE复合电极而后者的电Fenton处理效果则明显优于前者关键词含酚废水IrO2/Ta2O5复合电极电FentonIIIAbstractWastewatercontainingphenolsisakindofimportantwastewaterfromindustry.Astheyconstitutetreattohumanhealthandproduceapublicconcern,theyhavebeenlistedamongthe129prioritypollutantsbytheUSEPA.Theyalsohavebee

4、nlistedintheprioritypollutantsthatshouldbetreatedinourcountry.Becauseofthetoxicityofphenolstomicroorganism,theyarehardtobedegradatedintraditionalbiochemicaltechnology.AsonemethodofAOPs(AdvancedOxidationProcesses),theapplicationofFentonisahotspotintreatmentofsomeorganicwastewater.E

5、lectro-Fenton,developedfromtraditionalFenton,isoneofthemostprospectivemethodsinwastewatertreatment.ThetreatmentefficiencyofwastewaterbyElectro-Fentonisdependedmuchonthecharacteristicsoftheelectrode.Inthispaper,severalnewelectrodesincludingtheIrO2/Ta2O5electrodeandtwocompositeelect

6、rodesmadeofcarbonmaterialswereusedinElectro-Fentonsystem.Theprimaryachievementsareasfollowing:(1)TheIrO2/Ta2O5electrodewasemployedinElectro-Fentontodegradethe4-nitrophenolandtheparametersofthetreatmentprocesswereoptimized.Undertheoptimizedconditionsmorethan99%of4-nitrophenolcouldb

7、eremoved.(2)ThepreparationprocessofcompositeelectrodesofGraphite-PTFEandActivedCarbon-PTFEwerestudied.Followingconditionsofpreparationwereaccepted:PTFEasadhesive,ethanolassolventandOPasdisperseagent.Alsothemanufacturingprocedureswereestablishedatthesametime.Finallywemadesuccessful

8、lythecompositeelectrodes.(3)Twoco