Polar fog waste treatment

Liquid purification or separation – Processes – Treatment by living organism

Reexamination Certificate

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Details

C210S613000

Reexamination Certificate

active

07833414

ABSTRACT:
A FOG waste treatment facility includes a slipstream loop incorporating circulation pumps, heat exchangers and anaerobic digesters for continuously circulating actively digesting sludge at a rate to preclude solid settlement accumulation warmed actively digesting sludge is pumped from the slipstream loop through a rock trap into a delivery/input loop both for aiding delivery of FOG waste to, and for partially filing, a receiving/conditioning holding tank. The actively digesting sludge softens and liquefies the FOG wastes offloaded into the holding tank for further treatment at a desired treatment temperature range. The contents of the receiving/conditioning holding tank are continuously mixed by a bottom-top recirculation chopper pump to pre-treat the FOG wastes, and decreasing solids particle size. The produced, flowable feedstock slurry can then be injected back into the actively digesting sludge slipstream loop at a controlled rate. The resultant mixture then is introduced into the input of waste treatment systems having anaerobic digesters for digestion of solids.

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Chevron Energy Solutions Company, a Division of Chevron U.S.A. Inc.; “Cogeneration & Grease Receiving Station Project—Report and Proposal”; Dated Feb. 3, 2005; pp. 17-20, and Attachment 1 pp. 2-5 of Detailed Scope of Work.
Chevron Energy Solutions Company, a Division of Chevron U.S.A. Inc. and the City of Millbrae, CA; “Energy Services Contract”; Dated Apr. 27, 2005, Attachment D—Scope of Work pp. 2-5.

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