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:
Dec. 02, 1986
Filed:
Sep. 30, 1985
Clarence A Hoffman, Rothschild, WI (US);
William M Copa, Wausau, WI (US);
Michael R Mayer, Wausau, WI (US);
Zimpro Inc., Rothschild, WI (US);
Abstract
A process for treating high strength BOD containing liquors includes the step of mildly mixing and contacting the liquors with anaerobic bacteria and a powdered adsorbent support medium to remove a substantial portion of the organic matter and generate a methane fuel gas. Use of the powdered support medium at 0.1-20 g/l enables high removal of BOD in short treatment times, rapid clarification of treated liquors, and increased adsorbability of liquor color. In a subsequent decolorizing embodiment, digested and clarified liquors are contacted with reduced concentrations of powdered color adsorbent to produce a treated liquor low in dissolved organic matter and color. The spent streams of powdered adsorbent support medium-biomass and/or powdered color adsorbent are preferably regenerated and reused.