Evaluation of Plastic Carrier Media Impact on Oxyg

Evaluation of Plastic Carrier Media Impact on Oxygen EvaluationofPlasticCarrierMediaImpactonOxygenTransferEfficiencywithCoarseandFineBubbleDiffusersHaoPham1*,SudhakarViswanathan1,RobertF.Kelly21DegremontTechnologies–Infilco,Richmond,VA,USA.2DegremontNorthAmericanResearchandDevelopmentCenter,Richmond,VA,USA.*Towhomcorrespondenceshouldbeaddressed.Email:hao.pham@infilcodegremont.comABSTRACTAstudywasconductedusingan840gallontesttanktoevaluatetheimpactofcarriermediaonstandardoxygentransferefficiencyincleanwater(SOTEcw),usingcoarseandfinebubbleairdiffusersusedinIntegratedFixed-FilmActivatedSludgeandMixedBedBiofilmReactorsystems.TheobjectivesofthisstudyweretoevaluatetheimpactofvariousfillvolumesofcarriermediaonSOTEcw,tobetterunderstandthemovementofthecarriermediaatdifferentfillfractionswiththeuseofdifferentdiffusertypesandtodeterminetheminimumairflowrequiredtoachievemediarollatdifferentfillfractions.Resultsshowthatwithupto50percentmediafill,thefinebubblediffuserSOTEcwisabouttwicethatofthecoar