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Mariposa County needed a composting technology vendor to design and provide equipment for a new municipal solid waste (MSW) composting facility with:
The team of ECS and DA Construction (of Montana) completed the design and construction of the Mariposa MSW in-vessel composting facility. This facility is designed to receive 50 tons of unsorted MSW per day. The waste passes through pre-processing equipment including picking lines, bag breakers, and a debris-roll screen for removing recyclables and contaminants and separating the organic from the non-organic wastes.
Primary composting takes place in our in-vessel tunnel system, an automated compost system. This installation includes eight concrete vessels that are 14’ wide by 50’ long. The in-vessel tunnel features include: automated aeration control and monitoring; reversing and recirculating process aeration; in-floor plug-resistant aeration; leachate and condensate collection; and biofiltration of all exhaust air. ECS-supplied process equipment includes a heavy-duty compost mixer, specialized conveyors, and a negatively aerated ASP system for extended curing.
Following 16 days of primary in-vessel composting the biomass is cured on an ECS ASP. When ready, the compost is mechanically screened and made available for alternate daily cover on the County’s landfill. Future facility plans include composting source separated organics for making Grade A compost.
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