FGD	WWT	Systemsat	John	E.	Amos	andMountaineer	PlantNovember4,2014John	E.	Amos	Plant	– Aerial	ViewGypsumDewateringandWWTPlantFGDsFGDBAPComplexOutfall003FGDLandfillJohn	E.	Amos	Plant	WWT– Aerial	ViewGypsumDewateringCPSWWTBldgDewateredGypsumWWTPrimaryClarifiersEqualizationTanksAmos	‐ FGD	Systems•Design&Operation:•LimestoneForcedOxidation•B&WTray/SprayTower•Density:19.5‐22.5%•ORP:100‐300mV•pH:U1&U2– 5.9;U3– 6.0•Chlorides:<8000ppm•L/G:~75•SO2Removal:97%•HgRemoval: 90+%•Blowdown: U1&U2– 1200gpm;U3– 1900gpm•CPSInlet: 800gpmAmos	‐ FGD	SystemsAmos	‐ FGD	CPS	WWT	SystemDesign	and	OperationAmos	‐ FGD	CPS	WWT	System•Design&Operation•Originaldesignforsolidsremoval•Modifiedformercurymitigation•Inlet•Flow:807gpm•SolidLoading:26,600lbsdrysolid/hr•Chlorides:12,000ppm•Outlet:•TSSRemovalTarget:30ppmavgmonthly,100ppmmaxdaily•DesignBasis– CurrentELGregulationsforlowvolumewaste•FilterPresses:16,500ft3/daysolids,50%drysolidsAmos	‐ FGD	CPS	WWT	SystemFromDewateringDesaturationTanksCoagulationTanksClear WaterSumpTo WW Tanks /Clear WaterPond / Outfall 003EQTanksPrimaryClarifiersLimeFerricChlorideSludgeHolding TankFilter PressesFilterCakePrimarySludgePumpSecondarySludgePumpWaste WaterCollectionSumpSecondaryClarifierWaste WaterTransfer Pump1stStage FilterPress FeedPump2ndStage FilterPress FeedPumpFilter Press Water toDW Sump /FGDAbsorbersOrganosulfide,GE MR 2405Primary Polymer,GE CE 2681Organosulfide,GE MR 2405SecondaryPolymer, GEAE 1703Amos	– Bottom	Ash	Pond	ComplexWW TankWW TankFrom ClearWater SumpFrom Gypsum &Leachate PondsOutfall toRiverPolymerBottom Ash Pond BBottom Ash Pond ARecirculation PondClear Water PondFGD	CPS	WWT	SystemsPerformanceFGD	CPS	WWTP	PerformanceFGD	CPS	WWTP	PerformanceFGD	CPS	WWTP	PerformanceFGD	CPS	WWTP	PerformanceFGD	CPS	WWTP	PerformanceFGD	CPS	WWTP	Total	SeleniumFGD	CPS	WWTP	Dissolved	SeleniumFGD	CPS	WWTP	Performance

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Email: docket-customerservice@epa.govLandfill	Leachate	Surge	PondConstruction of LeachateSurge PondOperation of Leachate SurgePondMountaineer	WWT		SystemCPS WW fromPlantEffluent StorageTankTreated Water to 1stStage Feed TankDesatTanks (2)PrimaryClarifiers (2)LimePrimaryPolymerOrganosulfideSecondaryPolymerFilter Presses (2)FilterCakePrimary SludgePumpsSecondarySludgePumpSecondaryClarifierOrganosulfideEQ Tank (1)Ferric SulfateFerric MixTanks (2)Out ofServiceEqualizedWW PumpSludge FeedTankEffluentTank1stStageFeed TankNutrientSulfuricAcid1stStage FeedPumps1stStageReactors (6)Treated Waterfrom EffluentStorage TankFrom LeachateFeed Pumps2ndStageFeed TankNutrient2ndStage FeedPumps2ndStageReactors (6)EffluentPumpsTreated Waterto Clear WaterPondBioreactor	Design•InfluentORP•Rangefrom+200to+300mV•Temperature•Max105°F,Min:50°F•TSSMax:200ppm•NutrientFeedSystem•Molasses‐BasedNutrientfedtofirstandsecondstages•SulfuricAcidSystem•pHofCPSstreamaveragesbetween8and8.4s.u.•pHadjustedto7to7.5priortoenteringtheABMet®systemwithacid•50x130x30fthighconcretestructure•30in.concretewalls•MaterialSelection•Non‐metallicpiping,useoffiberglass,PVC,andHDPETeflon‐coatedbutterflyvalvesBioreactor	Operations	and	StartupOperations•InletMeasurements•Temperature,pH•Flow•Degassing•Backwash•BiomassDisposal•Manpower•Monitoring•pH,ORP,Level•OutageManagement•Unit/FGDStartupsFGD‐ABMet®SystemPerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceABS2:pH~6.8,ORP~483mV(Ag/AgCl)ABS1:pH5.6,ORP142mV(Ag/AgCl)Startup(1ABS)Startup	Effects	on	Selenium	SpeciationStartup(2ABSs)

(ppb)FGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformanceFGD	CPS	WWT	and	Bioreactor	PerformancePoint	of	ContactTimLohner,Ph.D.ConsultingEnvironmentalSpecialistAmericanElectricPower,1RiversidePlaza,Columbus,OH43215614‐716‐1255twlohner@aep.com