MBBR and IFAS Pilot Program for Denitrification at

MBBR and IFAS Pilot Program for Denitrification at Fairfax County_s Noman Cole Pollution Control PlantWaterPractice™•Vol.1•No.5©2007WaterEnvironmentFederation•doi:10.2175/193317707X256955MBBRandIFASPilotProgramforDenitrificationatFairfaxCounty’sNomanColePollutionControlPlantSarahMotsch1,DanFetherolf1,GeorgeGuhse2,JohnMcGettigan3,TomWilson3*1FairfaxCounty,NomanM.ColePollutionControlPlant,9399RichmondHighway,Lorton,VA220792GreeleyandHansen,6551LoisdaleCourt,Suite603,Springfield,VA,221503EarthTech,675N.WashingtonStreet,Suite300,Alexandria,VA22314,*Towhomcorrespondenceshouldbeaddressed.Email:Tom.Wilson@EarthTech.com.ABSTRACTAspartofanutrientreductionprogram,developedtomeetnewVirginiaENRrequirements,twoinnovativedenitrificationtechnologieswerepilotedattheNomanColeJr.WaterPollutionControlPlantinFairfaxCounty,Virginia.ThefirsttechnologywasaMovingBedBiofilmReactor(MBBR).ThesecondtechnologywasamodifiedIntegratedFixedFilmActivatedSludge(IFAS)process.Thesestudieshaveshownthatbothtechnologiescanbe