City of Toronto Solid Waste Management Services · Agenda City of Toronto Solid Waste Management...
Transcript of City of Toronto Solid Waste Management Services · Agenda City of Toronto Solid Waste Management...
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City of TorontoSolid Waste Management Services
8th Canadian Waste Resource Symposium
BIOGAS UTILIZATION:
Disco Road Organics Processing Facility
Carlyle Khan, Director
Infrastructure Development & Asset Management
December 1, 2015
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Agenda City of Toronto Solid Waste Management Services
Climate Change Goals
Biogas and Landfill Gas Assets
Disco Road Organics Processing Facility
The Anaerobic Digestion Process
Biogas Overview
Biogas Utilization Options
Preferred Biogas Utilization Option
Electricity & Thermal Energy Overview
The Renewable Energy Approval Process and Reports
Financials and Payback
Biogas Consumption Amounts
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Solid Waste Management
Mission Statement:
To be a leader in providing innovative management services to residents, businesses and visitors within the City of Toronto in a safe, efficient, effective and courteous manner, creating environmental sustainability, promoting diversion and maintaining a clean city.
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The City of Toronto has committed to:
Reducing GHGs by 30% from 1990 levels by 2020.
Reducing GHGs by 80% from 1990 levels by 2050.
Climate Change & Solid Waste
Renewable Natural Gas (Fuel)
Renewable Electricity Renewable Natural Gas (Heat)
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Biogas & Landfill Gas Assets
The Greenlane Landfill
The Disco Road Organics Processing Facility
The Dufferin Organics Processing Facility
The Keele Valley Landfill (closed)
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Disco Road Organics Processing Facility
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The Anaerobic Digestion Process
Tipping Floor
Residual Waste, such as plastic bags, sent to Green Lane Landfill
Water added to material
Clean Organic Pulp Suspension Buffer Tank
Water Removed
Effluent
Digester Solids
BiogasBiogas
Utilization Facility
Electricity generation for facility (reduce reliance on power grid)
Heat for buildings and the anaerobic digestion process (reduce reliance on NG)
Flare
Green Bin materials collected and sent to transfer stations.
Renewable Natural Gas production to use in NG vehicles (reduce reliance on diesel)
AD Facility
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Biogas OverviewComponent Amount Unit
Temperature 33 °C
Water (H2O) 100 %RH
Pressure 29.06 In. Hg
Methane (CH4) 68.7 Vol.%
Carbon Dioxide (CO2) 30.6 Vol.%
Nitrogen (N2) ND Vol.%
Oxygen (O2) 0.68 Vol.%
Hydrogen Sulphide (H2S) 821 Vol.%
Total Non Methane Hydrocarbons 2247 mg/m3
Total Silicon 187 µ/m3
* ~ 97 m3/tonne SSO
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Biogas Utilization Options
Power Purchase Agreement – Electricity Generation with Limited Heat Capture
Power Purchase Agreement – Combined Heat and Power
Load Displacement Electricity Generation with Limited Heat Capture
Load Displacement Combined Heat and Power
Renewable Natural Gas
Renewable Compressed Natural Gas as Vehicle Fuel
Renewable Liquefied Natural Gas as Vehicle Fuel
Biogas to Methanol
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Electricity and Heat Generation
Electricity
A 2.0 MW Plant with two internal combustion engines.
Both generators to operate during on-peak hours
One generator (0.850 MW) to operate during off-peak hours
Thermal Energy
Limited heat capture with design flexibility to convert to full scale CHP.
Heat to be conveyed by 90°C hot water
Supply of full thermal demands at 120 Disco (DROPF and Transfer Station)
Supply of majority of thermal demands at 150 Disco (Partner Division)
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Behind the Meter Conceptual Design
A
B
C
D
DROPF Transfer Station
Biogas Utilization Facility
Biogas,Electrical,Hot Water
Connections
Electrical and Hot Water Connections
Hot Water Connection
150 Disco Road
(Disco Yard) 120 Disco Road
(DRWMF)
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Financial Estimates
• Estimated Capital Cost Approximately $5.0 million
• Estimated Annual Operating Cost $260,000 plus major overhaul every 10 years of $790,000
• Estimated Annual Energy Savings $1.4 million in Electricity
$77,000 in Natural Gas
Simple Payback of approximately 4.8 years
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But Wait…….
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Recommendations
Environmental
EconomicSocial
Triple-bottom Line Framework
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RNG
Estimated that we can produce 4.5M diesel litre equivalents each year (1.2M diesel gallon equivalents)
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RNG Option
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Behind the Meter Theoretical Design
DISCO Transfer Station
Biogas Upgrading
Facility
Biogas Stream
Natural Gas Pipeline
Compressor
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Financial Estimates
• Estimated Capital Cost Approximately $2.0 – 4.0 million (technology dependent)
• Estimated Annual Operating Cost $1.00 – 1.5M (technology dependent)
• Estimated Annual Diesel Cost Avoidance $4.0M (entirely dependent on price of diesel)
Simple Payback of approximately 2.5 years
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Environmental Estimates
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Social Estimates
Social Benefits
NG vehicles are far less noisy
Local health outcomes
Job creation potential through new technology adoption
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Thank You