Digesters - Metropolitan Water Reclamation District of Greater Chicago
Digesters - Metropolitan Water Reclamation District of Greater Chicago Digesters - Metropolitan Water Reclamation District of Greater Chicago
Projecting Future Energy Prices• Utility Prices were estimated for 20 year period beginningin 2016• Electricity: Currently $0.05/kWh• Estimated rise for 2016 +: $0.08/kWh• Natural Gas: Currently Estimated at $6/mmBtu• Estimated rise for same 20 year period: $8/mmBtuNote: Thousand Cubic Foot = Million Btu [mmBtu]
Energy Flow Model - Baseline• 2016 conditions selected as baseline– 2016 plant influent (from master plan)– Half of WS Imhoff Tanks Replaced with PCs– All Thickening Improvements Complete– Cost of Operating MBM Facility included– No Cogeneration Option – Excess Gas Flared– Utility Prices: $0.08/kWh (Electric) and $8/mmBtu (Gas)• 2016 Baseline Values (Annual)– Annualized Cost: -$1,752,000 must spend money for MBM– GHG Reduction: -23,214 MT eCO2 must send natural gas to MBM– Unused Energy: 355,419 mmBtu must flare lots of excess gas
- Page 1 and 2: Digester Gas Utilization at SWRPWhe
- Page 3: Presentation Outline• Background/
- Page 9 and 10: Projected Digester PerformanceVSR
- Page 12 and 13: Digester Gas Production - Modeling
- Page 15 and 16: Energy Consumption at SWRP• Build
- Page 24 and 25: Energy Flow Scenarios:Digester Gas?
- Page 26 and 27: Energy Flow Modeling Framework26
- Page 28 and 29: Model Components - Gas Cleanings H2
- Page 30 and 31: Model Components - Plant Energy Dem
- Page 34 and 35: Energy Flow Model - ScenariosScenar
- Page 36 and 37: Energy Flow Model - Results$2,000,0
- Page 38 and 39: Engine Operation Alternatives• Ba
- Page 40 and 41: Updated Model Parameters• New Per
- Page 42: Sensitivity Analysis - Electricity
- Page 45 and 46: Triple Bottom Line Analysis• Econ
- Page 47 and 48: Other Reference InstallationsMetrop
- Page 49 and 50: Calls and Field Visits - Steam Turb
- Page 51 and 52: Conclusions/Discussion• A Combine
- Page 53 and 54: Sizing of Cogeneration SystemsCogen
- Page 55 and 56: Triple Bottom Line ScoringScenario
Projecting Future Energy Prices• Utility Prices were estimated for 20 year period beginningin 2016• Electricity: Currently $0.05/kWh• Estimated rise for 2016 +: $0.08/kWh• Natural Gas: Currently Estimated at $6/mmBtu• Estimated rise for same 20 year period: $8/mmBtuNote: Thousand Cubic Foot = Million Btu [mmBtu]
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