The City collects approximately 145,000 tonnes of organics a year and processes the majority of it within city limits.
The City’s two Organics Processing Facilities (Dufferin and Disco Road) use innovative pre-processing systems followed by anaerobic digestion — a process where microorganisms, in the absence of oxygen, break down the material to produce:
- digester solids, which can be used to create high quality compost
- and biogas, which is made up of methane gas, carbon dioxide and other trace elements and typically flared (burned off).
The City is planning to install equipment at both organics processing facilities and two landfill sites that will allow it to upgrade biogas into renewable natural gas (RNG), which can then be used to fuel solid waste collection trucks. The first site to receive the new equipment will be Dufferin.
Disco Road Organics Processing Facility
Completed in summer 2014, the Disco Road Organics Processing Facility, currently processes 75,000 tonnes of organics per year using a state-of-the-art wet pre-processing system and anaerobic digestion. After arriving at the facility, organic material is pre-processed in a hydropulper where it is mixed with water to facilitate the removal of the non-organic materials. This is followed by anaerobic digestion.
The Disco Road Organics Processing Facility is North America’s first full-scale municipal source-separated organics/green bin waste processing operation to use anaerobic digestion. The Disco facility:
- features a sophisticated odour control system
- incorporates the harvesting of rainwater
- uses biogas in dual-fired boilers to meet processing demand and help heat the building.
In 2016, the City won a Solid Waste Association of North America (SWANA) Silver Excellence Award in the Composting category for the Disco Road Facility.
The facility is located at 120 Disco Road. In addition to an organics processing facility, the site also includes a transfer station, outdoor areas for yard waste composting and a drop-off depot for Household Hazardous Waste and Electronic Waste.
Dufferin Organics Processing Facility
The Dufferin Organics Processing Facility is undergoing an expansion to increase its organics processing capacity from 25,000 tonnes a year to 55,000 tonnes a year. The expansion is scheduled to be complete in 2019 and includes the following enhancements:
- Installation of a wastewater treatment system
- Expansion of the odour control system
- Increased building footprint to accommodate a larger tipping floor and new processing equipment
- Installation of a buffer tank
- Addition of insulation and new exterior cladding
- Larger spill-containment system
- Relocation of leaf and yard material area.
Like the Disco Road Organics Processing Facility, the expanded Dufferin facility will also use anaerobic digestion, but a different pre-processing system. At Dufferin, the organic material will be separated from the non-organic material using a press.
The City will be installing new equipment at the Dufferin facility in 2018 that will allow it to upgrade the biogas produced into renewable natural gas (RNG) and inject it into the natural gas grid. The RNG can then be used to fuel solid waste collection trucks.
The Dufferin facility is located at 35 and 75 Vanley Cr. and also includes a transfer station, outdoor areas for yard waste composting and a drop-off depot.