As part of the expansion of the Fort McMurray Tertiary Waste Water
Treatment Plant, the Regional Municipality of Wood Buffalo gave Earth Tech the
order to design a biosolids composting plant.
The design population of 85,000 persons results in a facility with 5 tunnels
each able to compost 817 m3 of biosolids mixed with woodchips with a total
retention time of 21 days.
The Fort McMurray Biosolids Composting plant is planned to be started up
Due to population growth, significant upgrades to Fort McMurray’s current
lagoon-based treatment system became necessary and construction of a new
Water Reclamation Facility was undertaken.
The design allowed for a new state-of-the-art indoor composting system to stabilize
blended sludge from the fermentation and secondary treatment processes.
The blended sludge is conveyed directly to a mixing tank via a series of augers.
Wood chips are added to the tank and the two sources are thoroughly mixed, to
produce a blended mix ready for composting. The mix is then composted in series
of concrete tunnels for 21 days. There are 7 tunnels used on a rotating basis, with
provisions to expand the system up to nine tunnels.