简介：ThispaperdescribestheNiiMiprocessdesignedtotreatlandscapewater.ThemainaimoftheresearchwastoinvestigatethefeasibilityofNiiMiforremovingorganicandnutrimentmaterialsfromlandscapewater.Duringthebatch-scaleNiiMioperation,theremovalratesofcolorrangedfrom66.7%-80%,ofturbidityfrom31.7%-89.3%,ofchemicaloxygendemand(COD)from7%-36.5%,oftotalphosphor(TP)from43%-84.2%,ofsolublephosphatefrom42.9%-100%,oftotalnitrogen(TN)from4.2%-46.7%,andofNH4+-Nfrom39.3%-100%atthehydraulicloadingof0.2m3/(m2·d).ResultsshowedthattheremovalefficienciesofCOD,TP,solublephosphateandTNdecreasedwiththedeclineinthetemperature.TheNiiMiprocesshadastrongshockloadingabilityfortheremovaloftheorganics,turbidity,TP,solublephosphate,TNandNH4+-N.Threesodiumchloridetracerstudieswereconducted,labeledasTS1,TS2,andTS3,respectively.Themeanhydraulicretentiontimes(meanHRTs)were31hand28hforTS1andTS2,respectively,indicatingtheoccurrenceofadeadzonevolumeof12%and20%forTS1andTS2,respectively.TS1andTS2displayedtheoccurrenceofshort-circuitingintheNiiMisystem.ThecomparisonresultsbetweenTS1andTS2werefurtherconfirmedinthevaluesobtainedforsomeindicators,suchasvolumetricefficiency(e),short-circuiting(S),hydraulicefficiency(λ)andnumberofcontinuouslystirredtankreactors(N).