Report of the Comm. on GLSD on Pet. of Ugandan Women Taken to Work in Iraq
Co-DigesCon with · Cheri Cousens, GLSD Richard Weare, GLSD Benjamin Mosher, CDM Smith ... •...
Transcript of Co-DigesCon with · Cheri Cousens, GLSD Richard Weare, GLSD Benjamin Mosher, CDM Smith ... •...
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NEWEA–2018AnnualConference&Exhibit
January22,2018
TheNextStepTowardsNetZeroOperaConattheGreaterLawrenceSanitaryDistrict
CheriCousens,GLSDRichardWeare,GLSDBenjaminMosher,CDMSmithMichaelWalsh,CDMSmith
Co-DigesConwithFoodWasteOrganics
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NEWEA–2018AnnualConference&Exhibit
TheNextStepTowardsNetZeroOperaConatGLSD
§ Background§ ProjectDrivers§ TheProject§ ConstrucCon&Pilot
ProgramStatus§ ProjectedBenefits
2
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NEWEA–2018AnnualConference&Exhibit
GLSDBACKGROUND
§ EstablishedbyMassachuseWsLegislaConin1968
§ OperaConalSinceApril1977§ GovernedbyaBoardofCommissioners§ SecondlargestWWTPinMassachuseWs
(52mgdaverage/135mgdpeakdesign)§ Interceptors
§ 9Miles§ 24”through108”
§ RiversidePumpStaCon§ 2-800HPpumps§ 2-1,250HPpumps
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NEWEA–2018AnnualConference&Exhibit
TheGreaterLawrenceSanitaryDistrict(GLSD)
4
Salem
Andover
NorthAndover
NH
MA
RegionalWWTF
Methuen Lawrence
Merrimack
River
Dracut
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NEWEA–2018AnnualConference&Exhibit
EvoluConofBiosolidsManagementatGLSD
5
Vacuum Filter
Dewatering
Multiple- Hearth
Incineration
Waste Activated Sludge
Primary Sludge
Waste Activated and Primary Sludges
Belt Filter Press
Dewatering Cake to Off-Site Disposal (1/3 Total)
Liquid to Off-Site Disposal (2/3 Total)
Original Solids Train (1977 to 1989)
Modified Solids Train (1989 to 2002)
Ash to Landfill
Gravity Thickening
Gravity Thickening
DAF Thickening
Anaerobic Digestion
Thermal Drying
Waste Activated Sludge
Primary Sludge
Current Solids Train (2002 to 2016)
Beneficial Reuse
Gravity Thickening
Gravity Belt Thickening
Centrifuge Dewatering
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NEWEA–2018AnnualConference&Exhibit
MassachuseWsOrganicWasteDisposalBan
§ EffecCveOctober1,2014–Producersof>1tonoffoodwasteperweekbannedfromlandfillsorincinerators
§ Impactshotels,restaurants,universiCes,hospitals,supermarkets,foodprocessorsandwholesalers
§ MassDEPesCmates350,000tonsoforganicwastewillbedivertedfromlandfillsyearly
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NEWEA–2018AnnualConference&Exhibit
LimitedNewEnglandDigesConFaciliCes
§ AcceptableoutletsincludedigesConfaciliCes
§ GLSDisoneofonlysixinMassachuseWs
§ SecondlargestdigesConfacilityinMassachuseWs
7
R.I.19(1)
MASS.118(6)
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NEWEA–2018AnnualConference&Exhibit
Co-DigesCon
8
Wastewater Sludge
Organic
Waste
Glass Plastic
Cardboard
Sidestream
Anaerobic Digestion
Power
Effluent
Heat
Biogas Treatment
and Use
Biogas
Class A Biosolids
Biosolids Processing
Wastewater Treatment
Pre-Processing
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NEWEA–2018AnnualConference&Exhibit
ImpactofCo-DigesCononBiogasProducCon
BiosolidsSourceSeparatedOrganic(SSO)FoodWaste
FeedStock(Gal/Day) 10,000 10,000
Solids(%) 5 13
VolaCleSolids(%) 75 85
VolaCleSolidsConverted(%) 55 82
BiogasYield(CubicFeet/lb) 15 13.5
BiogasVolume(CubicFeet/day) 26,000 102,000
EnergyProduced(MMBTU/day) 14 56
PotenOalElectricalProducOon(kWH/yr) 600,000 2,300,000
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NEWEA–2018AnnualConference&Exhibit
TheEconomicsofCo-DigesCon
Credits• Revenue• TippingFees• AlternaCveEnergyCredits• RenewableEnergyCredits
• AvoidedCost• PurchaseofUClityElectricity• FutureIncreasesinEnergyCosts
• GrantsandIncenCves• MassDEP• MassCleanEnergyCenter• MassDepartmentofEnergyResources• NaConalGrid(ElectricSupplier)
Costs• Capital• SSOReceivingFaciliCes• ExpansionofExisCngDigesConSystem• BiogasTreatment• CombinedHeat&Power(CHP)FaciliCes• CHPEmissionsControl
• OperaConsandMaintenance• IncreasedDewatering/DryingCosts• CHPMaintenance• BiogasMediaReplacement
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NEWEA–2018AnnualConference&Exhibit
HistoricalBiogasData(Analysisof2013–2016)
Oxygen:02 1.2%Nitrogen:N2 3.8%
Methane:CH4 60%CarbonDioxide:CO2 35%HydrogenSulfide:H2S 73ppmv
w/FerricChlorideBTU/CF 605
Sp.Gravity 0.9Siloxanes 1110ppbv
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NEWEA–2018AnnualConference&Exhibit
ExisOngBiogasTreatmentandUses
Treatment:MoistureRemoval–DripTraps GLSDBiogasGlycolBoiler
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NEWEA–2018AnnualConference&Exhibit
GLSDCo-DigesConFeasibilityStudy(June2013)
§ Couldprocess~28,000gpdofSSOmaterialinexisCngdigesConsystem
§ Couldprocessupto92,000gpdofSSOmaterialwithaddiConof4thdigester
§ Canmeetupto40%oftheCommonwealth’sgoalforSSOdiversion
§ EconomicsarehighlydependentonvolumeofSSOmaterialreceived&energycredits
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TheProject
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NEWEA–2018AnnualConference&Exhibit15
GLSDOrganicstoEnergyProjectComponents
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NEWEA–2018AnnualConference&Exhibit
FoodWasteOrganicstoEBS®anEngineeredBioslurry
1616
CORe®SSOReceiptHopper&Bioseparator EBS®Product
EBS®Mixing&StorageTank
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NEWEA–2018AnnualConference&Exhibit
OrganicWasteReceivingandConveyance
TruckOffloadStaCons
ReceivingTanks
PumpedMix
System
SSOTransferPumps
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NEWEA–2018AnnualConference&Exhibit
AnaerobicDigesterNo.4
§ 1.4-MGvolume§ Draptubemixers§ Steelgas-holdingcover§ SpaceavailablewithinexisCng
DigesterBuildingforDigesterNo.4heaCngandpumpingequipment
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NEWEA–2018AnnualConference&Exhibit
BiogasConveyanceandTreatment
19
Fixedmedia(ironsponge)forhydrogensulfidetreatment
Carbonmediaforsiloxanetreatment
Expandedgasconveyancecapacity
Newflareforincreasedcapacity
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NEWEA–2018AnnualConference&Exhibit
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NEWEA–2018AnnualConference&Exhibit
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NEWEA–2018AnnualConference&Exhibit
CombinedHeat&Power(CHP)Engines
§ TworeciprocaCngCHPgenerators§ Totalcapacityof3.2MW§ Spaceforfuturethirdengine§ Powerfedtositeelectricalsystem
andnetmeteredtotheuClitygrid§ Projectedavgpowerdemands:
§ Plant:1,700kW(onsite)§ RSPS:700kW(vianetmetering)
§ Heatcapturedtosupplydigestersandotheron-siteheaCngdemands
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NEWEA–2018AnnualConference&Exhibit
CHPEngineEmissionsControl
§ OxidaConCatalyst(OC)technologytoremovevolaCleorganicscarbonsandcarbonmonoxide
§ SelecCveCatalyCcReducCon(SCR)technologytoremovenitrogenoxides
§ BestAvailableControlTechnology(BACT)asdeterminedbyMassDEP
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NEWEA–2018AnnualConference&Exhibit
CurrentProjectStatus
24
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NEWEA–2018AnnualConference&Exhibit
ProjectConstrucConCosts
§ ConstrucConBidCost: $25,713,966§ GrantsandIncenCves
§ MassachuseWsCleanEnergyCenter $400,000§ MassachuseWsDepartmentofEnvironmentalProtecCon $500,000§ MassachuseWsDepartmentofEnergyResources $5,000,000§ NaConalGrid $2,340,000§ MassDEPPrincipalForgiveness $1,597,994
TotalGrantsandIncenCves $9,837,994
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NEWEA–2018AnnualConference&Exhibit
PilotProgramObjecCves&IniCalFindings
26
• AssesslogisCcalissuesassociatedwithreceivingandprocessingtheSSOmaterial
• DeterminetheincreaseingasproducCon• EvaluateADoperaCngparameters• Determineimpactsoncentrifuge
performance,polymerusageandcentratecharacterisCcs
• Determineimpactofcentrateonsecondarywastewatertreatment
• DetermineimpactofSSOmaterialondewateringandthermaldryingoperaCons
• DetermineimpactsonferClizerpelletproducConquality.
26
ObjecOves IniOalFindings
• PumpingisuniqueforSSO• Meteringshouldbewithfoodgradedevices• NoadverseimpactstoADoperaCons• CentrifugePerformance
– Torquehasincreased– Lesspolymerusage– NochangeincentratecharacterisCcs
• Noincreaseindigestersludgevolumestothermaldryingfacility
• NoimpactonferClizerpelletproducConorquality
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NEWEA–2018AnnualConference&Exhibit27
PilotProgramBiogasProducCon
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NEWEA–2018AnnualConference&Exhibit
CurrentProjectStatus
28
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NEWEA–2018AnnualConference&Exhibit
Challenges
§ FinancinganAtypicalWastewaterProject(costsvs.revenues)
§ NetMeteringCap§ CommunityAcceptance§ SecuringFeedstock§ Permivng(AirandNoisePolluCon
Control)§ EngineOperaConsand
Maintenance§ MarketAnalysis
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NEWEA–2018AnnualConference&Exhibit
Successes
§ Improvedfacilityresiliencyandreliability§ Providesaneteconomicbenefittothe
DistrictanditsmembercommuniCes§ Upto$2.5Mannualpowersavings
§ 18millionKWH/year
§ $9.8MinFinancialAssistance§ UpdatedHostCommunityAgreement§ ElectricalInterconnecConAgreement§ ProcurementofOrganicMaterial§ FurthersGLSD’sTradiConofInnovaCon
andGoalofNetZeroOperaCon
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NEWEA–2018AnnualConference&Exhibit
ProjectPartners
31
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NEWEA–2018AnnualConference&Exhibit
Contactus!
32
RichardWeare(978)[email protected]
MichaelJ.Walsh,P.E.(617)[email protected]