Cold Weather Nitrification of Lagoon Effluent Usin
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2019-03-19 16:25:38
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Cold Weather Nitrification of Lagoon Effluent UsingCOLDWEATHERNITRIFICATIONOFLAGOONEFFLUENTUSINGAMOVINGBEDBIOFILMREACTOR(MBBR)TREATMENTPROCESSMr.FlemmingG.Wessman1andMr.ChandlerH.Johnson1AnoxKaldnes,Inc.,58WeybossetStreet,4thFloor,Providence,RIABSTRACTSince2000,thepopulationatJohnstown,Coloradohasincreasedover22%,andshowsnosignsofslowingdown.Facedwithmoreresidentsandimpendingyearroundammonialimits,theTownofJohnstownwasforcedtoupgradetheirwastewatertreatmentfacility.TheexistingtreatmentfacilityinJohnstownconsistedofthreelagoons,whosemainpurposewastoachievesettlingoftotalsuspendedsolidsandorganicmatter(BOD)removal.Tomeetthenewincreaseinflowsandnutrientlimits,theTownofJohnstownhadtwochoices:eliminateallexistinglagoonsandbuildanewconventionalactivatedsludgefacility,orcontinuetoutilizetheexistinglagoonsfororganicmatterreductionandaddadownstreampost-nitrificationfixedfilmtreatmentsystem.Bychoosingthelatteroption,theTownofJohnstownmanagedtosaveabout50%ofthecostofbuildingawholenewplant.Thepost
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