高级氧化技术处理垃圾渗滤液的研究

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1、AbstractLandfillleachateisonekindofcomplexwastewaterwithconsiderablevariationsincomposition，andhighconcentrationofCOD、heavymetalionandammonia-nitrogen．Pollutantconcentrationofthelandfillleachateusedtochangelargely．TreatmentoflandfillleachatehavenOWrepresentedaglobalenvironmentalproblemgivengreatat

2、tentionalltheworld．Advancedoxidationtechnologies(AOTs)areeffectivetechnologiesandhavegoodprospectofdevelopmentapplicationforthetreatmentofrefractoryorganicwastewaters．Inpresentstudy,thetreatmentoflandfillleachatebyFentonoxidationprocesses，anewFenton-lil【eoxidationprocessOxone／C02+oxidationprocesse

3、sandUltrasonic,／Oxonc／C02+Wel-einvestigated．Theoperationalparametersandthedegradationcharacteristicsofpollutantsineachprocess、Ⅳe犯studiedindetail．Theresultofeachexperimentwascomparedinparallel．Theresultsobtainedinthisstudycouldprovide80meimportanttheoryguidesforthetreatmentoflandfillleachate．Allthe

4、experimentalresultsworedemonstratedasfollows：1．ThetreatmentoflandfillleachatebyFentonoxidationprocess：Themainparameters(averagevalues)oflandfillleachatesampleswere：pH=8．17，COD=I116mg／L，ammonianitrogen(NH3-N)--25．4mg／L，SuspendedSolids(SS)=17mg／L,Color=300．Thebestoperationalconditionswerethefollowin

5、g：[H202]=80retool／L,【H202】／【Fe2+】=2．0，initialpH=2．5，reactiontemperature=37．54-1℃，reactiontime=160min，numberofstepwiseaddition=3．AfterFentontreatmentatoptimumconditions，thereachedCODreductionWas56．94％，TOCremovalwag46．32％，SSandcolorincreasedduetothegenerationofalargequantityofferrichydroxidesludge．2

6、．ThetreatmentoflandfillleachatebyOxone／C02+oxidationprocess：TakeChemicalOxygenDemand(COD)removalasthemainparameter,treatmentoflandfillleachatewerediscussedusingthesinglefactorexperimentsandorthogonalexperiments．TheresultsofFentontothatofOxone／C02+oxidationwascomparedunderdifferentoperatingconditio

7、ns．InreferencetoOxone／C02+oxidation，theoptimumoperationalconditionswerestatedbelow：[Oxone]=4．5mmoFL，[Oxone]／[C02+]=104，pH=6．5，reactiontemperature=30d：l℃，reactiontime=160min，numberofstepwiseaddition=7，theremovalof