Calgary Organics Composting Facility View From Top

Calgary Organics Composting Facility | AIM Environmental Group

Winner of the SILVER AWARD for INFRASTRUCTURE 2017, awarded by The Canadian Council of Public-Private Partnerships.

The Calgary Composting Facility opened its doors July 2017 and is AIM’s largest managed processing facility to date. With a design capacity of 145,500 tonnes per year, the facility is designed to receive and compost organics from the City of Calgary residential source separated organics program as well as dewatered biosolids from one of the City of Calgary’s Waste Water Treatment Facilities. As the OMR (Operate/Maintain/Repair) provider in combination with Maple Reinders/Nason J.V. as constructors, AIM developed the process flow, facility layout, and provision of key pre and post-process systems for the facility. The facility employs an advanced aerated static pile in-vessel system to better manage dual inbound organic waste streams.



“AIM Environmental Group’s team successfully processes over 100,000 tonnes of municipal organics received from The City of Calgary’s Green Cart program each year, and over 130,000 tonnes of organics in total when including municipal dewatered biosolids from The City’s Bonnybrook wastewater treatment plant.

The program has successfully diverted material from landfill, and produces high quality finished compost for use within the city and surrounding agricultural land”

Craig More, P.Eng. | Program Manager – Organics
The City of Calgary Waste & Recycling Services

City Of Calgary

Processing Design Capacity

Processing Design Capacity: 145,500 tonnes per year


Feedstock: Residential Source Separated Organics & Dewatered Biosolids

Processing System

Processing System: In-vessel aerated static pile

Calgary, Alberta

Location: Calgary, Alberta

Operational Since: July 2017

Operational Since: July 2017

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