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:
Apr. 14, 2020
Filed:
Feb. 21, 2018
Applicant:
Lakehead University, Thunder Bay, CA;
Inventors:
Assignee:
Lakehead University, Thunder Bay, CA;
Primary Examiner:
Int. Cl.
CPC ...
D21C 11/00 (2006.01); B01J 20/30 (2006.01); C02F 1/52 (2006.01); C02F 1/28 (2006.01); B01J 20/16 (2006.01); C02F 3/12 (2006.01); D21C 11/06 (2006.01); C02F 103/28 (2006.01);
U.S. Cl.
CPC ...
D21C 11/0085 (2013.01); B01J 20/16 (2013.01); B01J 20/3071 (2013.01); C02F 1/281 (2013.01); C02F 1/5236 (2013.01); C02F 3/12 (2013.01); D21C 11/0014 (2013.01); D21C 11/063 (2013.01); C02F 3/1263 (2013.01); C02F 2103/28 (2013.01); C02F 2301/046 (2013.01);
Abstract
The spent liquor (SL) of a thermomechanical pulping (TMP) process introduces a high load to the wastewater system of this process. To reduce this load, fly ash from a biomass boiler is used and the application of fly ash improves the performance of biological process. Three different alternatives are introduced to apply fly ash to treat spent liquor.