生活污泥改性烧制超轻陶粒的研究_严捍东

ResearchontreatmentaboutlandfillleachatebyABR-biologicalcontactoxidationandwettingcatalyticoxidizeWangXianshengHuangJiguoZouDongleiTangJieHuangJing(CollegeofEnvironmentandResource,JilinUniversi-ty,ChangchunJilin130026)ABR-contactoxidation-wetcatalysisoxidationisutilizedtotreatlandfillleachate.ThetwostepsperformedtooperatethereactorandcultivatethesludgeandthechangedvolumeloadingexperimentshowsthattheinfluentCODis10kg/(m3d),effluentCODis1000～1500mg/L,theremovalratemayremainduring80%～85%;theeffluentCODisun-der100mg/LaftertheeffluentinoxidationpondistreatedbyFentonoxidation.Theresultindicatesthatthetreatmenteffectiswellforlandfillleachatebythetechnology.Keywords:LandfillleachateABRContactoxidationWetcatalysisoxidationTherecoveryandregenerationofCo/BicatalystonthedecompositionoflandfillleachatebycatalyticwetairoxidationLiYu1WangJiang1LiHaisheng2LiuLiang1WangYue1WangXiaoli1ZhangRong1LiuHongliang2.(1.CollegeofEnvironmentandResources,JilinUni-versity,Changchun,Jilin130023;2.CollegeofChemicalandChemicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029)TheCo/BicatalystwaspreparedtodealwithlandfillleachatesbymeltingCo(NO3)26H2OandBi(NO3)35H2OwithHNO3(AR).OnceusedCo/Bicatalystwasre-coveredandregenerated,andtherecoveryratiowas(97.09±0.74)%afterthereactionprocess(thetemperatureof260℃,thecatalystdosageof2g,andoxygenpartialpressureof0.5MPa).XRDandBETmethodswereemployedtocharac-terizethefresh,onceused,onceregenerated,andsecondaryrecoveredcatalysts.BETandXRDinformationindicatedthat,forcatalyticactivity,freshcatalyst>onceregeneratedcatalyst>secondaryrecoveredcatalyst>oncereclaimedcata-lyst.Thecatalyticactivityofthecatalystsusedisthatfreshcatalyst≈onceregeneratedcatalyst>onceusedcatalystatthetemperaturesof280and300℃withalittledifferenceoffreshcatalyst>onceregeneratedcatalyst≈onceusedcatalystatthetemperaturesof220,240,and260℃,revealingthatattherelativelowtemperature,theactivityofonceregenera-tedandonceusedcatalystswasdeactivated.Keywords:CWAOCo/BiCatalystRecoveryRegenerati