The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2000
Filed:
Dec. 05, 1997
Markku Jonninen, Lahti, FI;
Ideachip Oy, , FI;
Abstract
The invention relates to a method and an apparatus for accelerated biodegradation of organic matter. The apparatus includes an enclosure for receiving a stack of organic matter and at least one fan connected to a series of aeration ducts for directing a gas containing oxygen through the stack. After passing through the stack the gas is collected and passed through a scrubber and a heat exchanger that cools the gas. A portion of the gas is exchanged with a portion of a replacement gas and then the gas is recirculated through the stack in a substantially closed loop system. The temperature, oxygen content, and flow rate of the gas are controlled to provide a sustained accelerated rate of biodegradation in the stack. In addition, the stack is periodically agitated.