The City of Lethbridge wanted to upgrade it’s unaerated windrow compost operation at its’ Waste and Recycling Center. The city aimed to speed up the process and reduce the amount of organic waste going to landfills. The project also included an expanded collection program, along with new pre-processing equipment to manage these additional organics streams.
After visiting several facilities, the City chose to to work with ECS on a process design. ECS collaborated with Tetratech Engineering to identify a solution that would fit well on the site, could be expanded over time, and work well in extreme cold temperatures.
The composting facility uses a two step aerated process. The primary composting step can both reverse and recirculate the airflow – enabling heat recovery and faster composting during cold weather conditions. The secondary composting step uses below grade positive aeration to further stabilize the material.
The city will have the ability to compost food, yard, institutional, commercial and industrial organic wastes, and even municipal biosolids. The project is part of the city’s broader efforts to reduce waste and increase sustainability. By diverting organic waste from landfills and turning it into a valuable resource, the project is helping to reduce greenhouse gas emissions and conserve natural resources. In addition, the compost produced by the facility is available for purchase by local residents and businesses, providing a sustainable alternative to chemical fertilizers and other soil amendments.
Lethbridge featured in Biocycle Article
CEA Sustainable Design Award for the Lethbridge Waste and Recycling Center
City peels open organic facility – City of Lethbridge
Grand Opening Announcement – Recycling Product News
We want to learn how to support your composting goals!
4220 24th Avenue West
Seattle, Washington 98199
Tel: (206) 634-2625
Fax: (206) 634-1309