Abstract: There is disclosed a system and method for composting large amounts waste material comprising a predominant amount of compostable organic material, such as Source Separated Organic (SSO) material. The method comprises mixing the waste material with a bulking agent such as tree bark, removing larger inorganic material then compositing the remainder using compositing bacteria and forced air to promote composting. During its initial composting stages when the majority of noxious gasses, fumes and odours are generated the composting is carried out in an enclosed area and the gases removed and treated using a bio-filter. Once the compostable organic material has been adequately decomposed the bulking agent is removed along with any residual inorganic material and the composting process completed. In particular embodiment the bulking agent is recycled. There is also disclosed a method and device for mixing the waste material with the bulking agent.
Type:
Application
Filed:
March 2, 2007
Publication date:
August 13, 2009
Applicant:
CONPOREC INC
Inventors:
Carl Genois, Rolf Arneberg, Denis Potvin, Bernad Caron, Jose Scorsone
Abstract: Raw waste is first composted into a bioreactor to produce a crude compost. At the outlet of the bioreactor, the crude compost is separated from the non-compostable waste fraction. Then, the separated crude compost is conveyed to a compost maturation area where the crude compost is recycled. The composting process is conducted in at least one closed building area maintained at a negative pressure for aspirating and directing odorous substances to a biofilter. This biofilter extracts the odorous substances whereby the process can carried out in urban areas without affecting the air quality and accordingly without disturbing the neighbourhood. Also, the composting process can be run with a number of employees as small as three, to produce high quality compost substantially free of pathogenic microorganisms.