Presentation on theme: "Energy from Waste As An Energy and Environmental Management System."— Presentation transcript:
Energy from Waste As An Energy and Environmental Management System
2 Reduce GHGs, PM 2.5 and air toxics. Solid Waste Disposal Renewable Energy EfW Energy – from – Waste IS Sustainable Development Modern Energy - from - Waste (EfW) Provides Three Functions:
3 Presentation Outline International Activity Increased use of Energy-from-Waste Regulations that are driving this behavior Pennsylvanias Solid Waste Balance Solid waste management and renewable energy Greenhouse gas reduction Other sustainable attributes Message EfW is growing in Europe, Asia and the USA The European Union Landfill Directive is smart pollution prevention policy – by avoiding landfilling of MSW - they are avoiding GHG and air toxic emissions while maximizing energy recovery. Lifecycle analysis is recommended for sustainability analysis
4 I. International – The use of EfW is increasing due to focus on energy and climate change. LocationExisting FacilitiesNew Facilities (a) RFPs/ Expansions (b) Plans (c) Europe388 (2003) USA89 (2006)---3/5 China67 (2005)TBD (a)In construction or operation. (b)USA expansions include Florida (Lee and Hillsborough), Minnesota (PERM, Olmstead, Poke Douglas). Others are also in motion. (c) The 67 facilities manage 1.5 % of MSW. The 400 larger facilities are to manage 30 % of MSW by 2030.
5 I. International – The European Thematic Strategy Four Priorities Climate Change Biodiversity Health Resource Use Seven Strategies Air Quality Marine Environment Sustainable use of resources Waste prevention and recycling Pesticides Soil Quality Urban Environment The European Commission and European Union have adopted an integrated program for a healthy local and international environment
6 I. International Activity – Specific EU Legislation EfW and Landfills are subject to stringent regulations EfW (2000/76/EC) Creates emission limits and operating standards for energy-from-waste facilities These standards can be credited for large reductions in emissions from EfW facilities Landfills (99/31/EC) EU Landfill Directive requires a reduction in landfilling of biodegradable waste Specific goal is to reduce emissions (CH 4 ) that contribute to greenhouse effect and to reduce impact on human health
7 I.International – Worldwide Experience EfW is compatible with Recycling Energy-from-Waste is used extensively worldwide 780 EfW facilities; 140 million tons per year (TPY) U.S. 89 EfW facilities 29 million TPY Western Europe 388 EfW facilities 62 million TPY Asia 301 EfW facilities 48 million TPY EfW Recycling/ Composting Landfill
8 I. The EU Integrated System is in Lancaster County Recyclables 186,400 tons 37% Waste-to-Energy Facility 266,200 52% Frey Farm Landfill 57,000 11% Refuse Recycled
9 I. Lancaster Countys Integrated System Evidence that WTE and Recycling are Compatible WTE has supported recycling efforts, not competed with them. Ferrous recovery contributes 3% to the overall County recycling rate. % Materials Recycled WTE began operating
10 II. Pennsylvanias MSW Balance – 2005 data shows that 88.3 % of non-recycled MSW is landfilled with 38.5 % being from out-of-state Management Option Million Tons MSW Percent Landfill EfW Total OriginMillion Tons MSW Percent In-State Out-of- State Total Does not identify waste shipped out of state NJ is about 55 % and NY is 40 % of out-of state waste 22 of 45 landfills have LFGTE
11 II. Pennsylvanias MSW Balance and Energy WTE generates clean renewable energy and promotes independence from fossil fuels Increased EfW and decreased landfilling generates significant extra renewable energy Each Ton of MSW managed by EfW avoids 1 barrel of oil or 0.25 ton of coal on an electrical energy generating basis EfW generates more power than any landfill option by processing each ton in about 1-hour using controlled combustion. The anaerobic breakdown of MSW in a landfill is not controlled and occurs in a 50 to 100 year period.
12 II. Pennsylvanias MSW Balance and Energy Renewable energy from EfW reduces fossil fuel use
13 II. Pennsylvanias MSW Balance and GHGs Pennsylvanias MSW mass balance is yielding positive CO2 emissions OptionMillion tons MSW Ton CO2E / ton MSWMillion tons CO2E/Year EfW Landfill Total Basis of calculations The ~ 3 million tons of MSW going to EfW is not going to a landfill in PA with energy generation – avoids ~ 2.34 Million tons CO2E (conservative, assumes all landfills have LFGTE) Remaining 21.5 million tons of MSW is going to landfills - all with LFG collection - 50 % with LFGTE and 50 % with flares. No vents only. EPA Lo of 100 M 3 CH 4 per megagram MSW and 45 % LFG % based on a lifecycle analysis.
14 II. Pennsylvanias MSW Balance and GHGs Increased Use of EfW will reduce GHG emissions Estimated breakeven point is about 10.5 million tons going to EfW and 13.5 million tons going to landfills
15 II. Background on GHG Emission Factors Each ton of MSW managed by modern EfW avoids about 0.78 Tons of CO2 when using conservative assumptions (45 % LFG collection with LFGTE) 45 % LFG Collection Lifecycle ParameterEfWLandfillEfW vs. LFGTE Nonbiogenic Avoided Fossil Fuel CO Avoided Methane Avoided Ferrous CO Long Haul Mobile Source0.00 Process Total Emission factors as Ton CO2E per Ton MSW for EfW and LFGTE Avoided CO2E with a landfill with flare is 0.94 ton CO2E/Ton MSW
16 II. Background on GHG Emission Factors Avoided fossil fuel CO 2 information for Pennsylvania Fossil Fuel CO2 factorEnergy FactorsCO2 Factor Power Supply (EIA) Lb CO2 per ValueUnitsValueThermal % (lb CO2/MW As % Fossil Coal1000 lb2161Btu/lb Oil1000 lb3139Btu/lb Gas1000 lb137Btu/scf The weighted average for avoided CO2 from fossil fuel combustion for electric power is: 2137 lbs CO2 / MW. A modern EFW facility generates 0.55 MW/ton which is equivalent to an avoided factor of 0.59 Ton CO2E per ton MSW.
17 II. Background on Emission Factors Avoided methane information for Pennsylvania ParameterValueUnits EPA Inventory Lo100M 3 CH 4 per Megagram MSW CH 4 content55% volume CH 4 Potential1.4Ton CO2E per ton MSW CH 4 Recovery via LFG45% of total CH 4 generated CH 4 Oxidation15% of uncollected CH 4 Emission Factor-Flare0.70Ton CO2E per ton MSW Avoided Fossil CO2 (a)0.15Ton CO2E per ton MSW Emission Factor - LFGTE0.54Ton CO2E per ton MSW Average Flare/ICE0.62Ton CO2E per ton MSW (a)Based on same avoided fossil factor as EfW and use of an internal combustion engine for electrical energy production.
18 III. Environmental Aspects of WTE Nationwide WTE facility emissions have been dramatically reduced Source: Environmental Protection Agency, 2002
19 III. Environmental Aspects of WTE - Dioxin WTE emissions now represent less than 1% of known dioxin inventory
20 IV. Environmental Aspects of WTE - Mercury WTE now represents less than 3% of U.S. man-made mercury emissions
21 III. Environmental Aspects of WTE - GHGs WTE reduces PM 2.5 Precursors and Air Toxics Fine Particulate EfW avoids SO2 and NOX emissions from fossil fuel combustion – these are precursors to ambient ammonium sulfate and nitrate, respectively. Landfill Emissions Avoids a variety of air toxics from landfills including ; - 46 constituents in EPAs AP of which are air toxics - nonmethane organic compounds (NMOC) - methane – a potent greenhouse gas (23 time more potent that CO 2 )
22 III. Environmental Aspects of WTE – Land Use WTE reduces waste volume by 90% and reduces biological byproducts including LFG, organic leachate and pathogens. Land Use 10 cubic yards of MSW is reduced by 90 % to 1 cubic yard, thereby maximizing land committed to a landfill. An EfW facility uses significantly less land than a landfill over any time period. As an example – the EfW industry saves 25,000 acre-feet per year when comparing landfill area required for MSW versus combined ash. Combined Ash Disposal Stable and inert due to low pozzolanic properties & low carbon content. RCRA nonhazardous with very low metals leaching from landfills. Can be reused as landfill cover and other potential civil applications.
23 IV. Conclusion EfW promotes a sustainable environment thru maximum recovery of electrical power and maximum avoidance of GHGs Reduced use of landfilling reduces GHG emissions The EU Landfill Directive GROCC Lifecycle analysis using EPAs model Energy-from-Waste maximizes renewable energy Avoids dependence on fossil fuels Promotes energy independence Energy-from-waste provides clean energy Controlled combustion and air pollution control processes Highly regulated industry with testing, continuous monitoring and reporting