organics #2 new technologies - harvest power
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Next-Generation Organics ManagementHigh Solids Anaerobic Digestion in Massachusetts
• Builder, owner, and operator of organic waste processing facilities
• Recognized industry-leading experience in organics waste management
• Financial investments from Kleiner Perkins Caulfield & Byers, Generation IM, Munich Venture Partners, and Waste Management
• 150 employees
• Expanding technology portfolio supported by industry-leading science and technology advisors
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Harvest, a Massachusetts-based company, is ushering in a new era of organic waste management by harvesting the renewable energy and soil-building potential in organic waste at its state-of-the-art organics recycling facilities.
Corporate Profile
About Harvest
• Fraser Richmond Soil & Fibre • Near Vancouver, BC, one of the largest, most efficient
composters in North America• Largest yard and food waste composting facility in Canada• Under construction of North America’s first commercial-scale
HSAD facility to increase capacity and process the region’s growing SSO stream
• Urban Wood Waste Recyclers• Metro Vancouver’s largest recycler of urban wood waste,
achieving the highest levels of land fill diversion in the region• Expanding production of coal-replacement fuels
• Tulare• Large windrow operation in Tulare County, CA• 100% of end product goes into high value agriculture
• Tullytown• Operating windrow facility at WM landfill site• Soon to be upgraded with Harvest’s proprietary composting
technology• London Ontario
• North America’s largest merchant AD facility• Using LSAD technology• Operational year end 2011
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Operating Facilities
About Harvest
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Technology Selection is Driven by Feedstock Characterization
That’s why Harvest is under development on high solids anaerobic digestion (HSAD) and low solids anaerobic digestion (LSAD) projects. The technology choice largely depends on the feedstock characteristics:
The choice is also dependent on the availability of wastewater reuse options (farms, WWTPs, etc.), as LSAD results in wastewater discharge.
Characteristic HSAD LSAD
Ideal waste stream types
Solid food wastes (including SSO, commercial/industrial and some FOG) and yard/wood wastes
Dewatered residuals, food waste, manure, FOG, liquid organic wastes
Solids content of overall mix
25-50% 5-15% (any greater would require dilution)
Contamination levels Can be higher due to fewer moving parts; contaminants are removed post-AD
Lower due to pumping of material; requires pre-processing of feedstock to remove contaminants
HARVEST’S TECHNOLOGY SPECIFICATIONS
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Technology
Characteristic HSAD LSAD
Solids Content High solids (stack) Low solids (pump)
Temperature Mesophilic 1st Phase Thermopilic Hydrolysis followed by 2nd Phase Mesophilic AD
Process Batch Continuous
No. of Stages Multi-stage Multi-stage
Schematic
SAMPLE 30,000 TONS PER YEAR HSAD FACILITY LAYOUT
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Technology
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HSAD – AdvantagesProcess yields biogas with average methane content of 70% to 80%, considerably higher than many other HSAD technologies. Less biogas cleaning and processing required.
Process design allows for a maximum feedstock residence time of wo weeks, increasing processing capacity and reducing facility footprint
No grinding, slurrying required; only moving part is front-end loader; entire process controlled by computer.Operational
Requirements
Biogas Purity
Residence Time
Technology
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HSAD – Advantages (2)AD process naturally breaks down many of the volatile compounds that cause odor; system under negative pressure with air ventilated through biofilter, eliminating VOCs; facility is totally enclosed.
Large portion of leachate is re-circulated to aid in digestion and gas yield; the remainder may be used in compost process.
Very low parasitic energy use of <5%; requirements can be met completely with energy generated on-site.
Water Usage & Leachate Control
Energy Requirements
Odor Control
Technology
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Cottbus R&D Facility
HSAD FACILITIES
Reference Facilities
Harvest’s HSAD technology partner GICON has built 30 biogas facilities in Europe, and we recently started construction on an HSAD facility at Fraser Richmond Soil & Fibre, our 300,000-tpy composting operation in Richmond, BC.
80,000 TONS PER YEAR LSAD FACILITY LAYOUT
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Technology
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LSAD – AdvantagesCan process a wide variety of typically challenging organic wastes including SSO, grease trap contents, food processing residuals and Dissolved Air Flotation residuals (DAF)
Has a long track record of operational success with thousands of facilities in operation
Continuous process allows for optimal use of infrastructure
Infrastructure Utilization
Feedstock Flexibility
Technology Dependability
Technology
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LSAD – Advantages (2)
A large number of technology suppliers exist, increasing competition and reducing facility costs
Less feedstock seasonality allows for more consistent operation
Consistent energy production due to continuous feeding process
Operational Consistency
Energy Production Consistency
Market Maturity
Technology
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Cottbus R&D Facility
LSAD FACILITIES
Reference Facilities
LSAD is a proven technology in North America and Europe. Harvest’s LSAD technology has experience in many different types of anaerobic systems, all of which are optimized for certain applications, duties or design objectives.
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Project Details
Power and Heat production 5.7 MW
Permitting Environmental permits approved by the Ontario Ministry of the Environment
Power Purchase Agreement 20-year agreement with the Ontario Power Authority under the Renewable Energy Standard Offer Program
Waste Capacity 80,000 tons
London Project Overview
Harvest is breaking ground on a 80,000-tpy LSAD facility in London, Ontario. The project details for this facility are shown below.
Harvest Power, Inc.221 Crescent Street, Suite 402Waltham MA 02453www.harvestpower.com
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CONTACTPaul Sellew, CEO781-314-9501 (o) | 860-428-3479 (c)[email protected]
Molly Bales, Business Development Associate781-314-9524 (o) | 252-452-0759 (c)[email protected]
About Harvest