The Miller Group

Project Experience – Halifax Regional Municipality Ebara Compost Facility

Project Name:Halifax Regional Municipality Ebara Compost Facility
Location:Dartmouth, Nova Scotia
Client Name:Halifax Region
Completion Date:1999
Cost:$8 million
Project Description:

Miller designed and built its Halifax Ebara In-vessel composting facility to process the Halifax Regional Municipality's (HRM) residential organic waste. The facility opened in 1999 and Miller is currently operating under a 20 year agreement with HRM. The property is owned by HRM. The vessel bed is constructed with a layered system of air plenum, concrete slot floor and woodchip built on a concrete foundation base. The vessel has a paddle assembly that traverses the vessel both agitating and aerating the compost in the process. A moisture addition system is also included to ensure that the composting mixture is kept at ideal moisture contents. This helps compensate for variations in the moisture content of the incoming organic waste. As the interior composting process finishes the material is moved to an outside area for final curing and preparation before delivery to end markets. Feedstock is made up of SSO (kitchen food waste – no plastic) and Yard waste collected together. Please see Halifax Regional Municipality website for more details. The entire process is contained within the building envelope held under negative pressure. Air from the process, as well as overall building air is sent through a wet scrubber and pushed through an Organic Media Biofilter prior to being distributed through an Organic Media Biofilter before being released to the environment. The compost produced is sold to soil blenders, landscape contractors for re-vegetating construction sites. Residuals are handled through manual sorting, screening and air separation. Contaminants are removed from the process through manual sorting and screening equipment and delivered to landfill. The Halifax facility is operated under a municipal SSO Design/Build/Own/Operate contract. It is located in an industrial park located in Dartmouth, Nova Scotia.

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