DIGESTER GAS ENERGY RECOVERY ALTERNATIVES

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Cleaning System CostsHydrogen Sulfide– Cleaning system: ~ $100,000 per 100 CFM– Operation ~ $7,000 per year per 100 CFMSiloxanes– Cleaning system ~ $190,000 per 100 CFM– Operation ~ $15,000 per year per 100 CFMCarbon Dioxide / Nitrogen Removal– Cleaning System: ~ $220,000 per 100 CFM– Operation: ~ $30,000 per 100 CFM
Levels of TreatmentPipeline Quality Gas On-Site Energy GenerationTreatment ATreatment BCarbon dioxide (< 2%)Hydrogen Sulfide (< 10 ppm)Water Vapor (< 7 lb/MMSCF) Siloxanes (< 50 ppb)Hydrogen Sulfide (< 4 ppm)Siloxanes (< 30 ppb)~ 98% MethaneTrace inert gases~ 55 to 65% Methane~ 35 to 45% Carbon DioxideReduced Constituents OtherInert Gases
Page 1 and 2: DIGESTER GASENERGY RECOVERYALTERNAT
Page 3 and 4: Digester Gas ProductionAnaerobic di
Page 5 and 6: SWWTP Digester Gas ProductionAt tim
Page 7 and 8: Digester Gas Trace ConstituentsHydr
Page 9 and 10: Hydrogen Sulfide RemovalSorption te
Page 11: Carbon Dioxide RemovalGenerally not
Page 15 and 16: Possible Implementation of Electric
Page 17 and 18: Alternatives - Clean Natural Gas Sa
Page 19 and 20: Alternatives - CNG VehiclesInstalla
Page 21 and 22: Summary and ConclusionsElectrical a

DIGESTER GAS ENERGY RECOVERY ALTERNATIVES

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