Organics and nutrient recovery from anaerobic digester residues

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United States of America Patent

PATENT NO 9533903
SERIAL NO

13823404

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Abstract

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Sludge from an anaerobic digester is treated to recover one or more of fibers, or solids or liquids with a high nutrient content. The solids or liquids can be used as a fertilizer. The fibers can be used in a plant growing medium. Solids are separated from liquids in the sludge and dried. The solids may be dried to produce a flake or pellet. Ammonia in the liquids is recovered and used to produce a concentrated acidic ammonium salt solution. This solution may be mixed with the solids to produce a nitrogen enhanced solid. The fibers and solids or liquids can also be used in combination to produce an enhanced plant growing medium. A device and process for removing ammonia from a liquid can be used in the system or separately.

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Patent Owner(s)

Patent OwnerAddress
ANAERGIA INCBURLINGTON ON L7L 4X5

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benedek, Andrew Rancho Santa Fe, US 28 467
Josse, Juan Carlos Mission Viejo, US 52 365
Scott, Zachary La Jolla, US 36 342
Thedoulou, Michael David Milton, CA 2 20

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