The Fisher Road Recycling facility is a compact site with neighbors close on its property boundaries. The existing compost facility uses an older European made in-vessel system for primary composting, followed by an aerated static pile (ASP) inside of a building for secondary composting. Curing is done outside in a separate ASP. In order for the facility to expand the permits required all primary and secondary composting be processed inside of a building, either in-vessel or in-building as before.
Fisher Road Recycling worked with ECS and quickly determined that using an ASP inside of a building for both primary and secondary composting would be both a better and less expensive process option. ECS designed a high aeration rate primary process that includes six bunker wall zones where process to further reduce pathogens (PFRP) and stabilization is achieved. The compost is then moved to secondary composting via front-end loaders to 16 secondary zones in a mass-bed configuration. Primary and secondary aeration is positive, both using ECS Low Friction Trench aeration floors and processed inside of a fabric covered building. Negative ventilation fans remove building air and run it through an ECS designed biofilter.
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