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:
Nov. 26, 2019
Filed:
Nov. 27, 2018
Applicant:
Ostara Nutrient Recovery Technologies Inc., Vancouver, CA;
Inventors:
Pierre Cote, Dundas, CA;
Ahren Britton, North Vancouver, CA;
Ram Prasad Melahalli Sathyanarayana, Lithia, FL (US);
Rhonda Maria Hyslop, North Vancouver, CA;
Assignee:
Ostara Nutrient Recovery Technologies Inc., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 9/00 (2006.01); C01F 11/22 (2006.01); C01B 25/26 (2006.01); B01D 61/04 (2006.01); C01B 25/45 (2006.01); B01D 61/02 (2006.01); C02F 1/52 (2006.01); C02F 101/10 (2006.01); C02F 101/14 (2006.01); C02F 101/16 (2006.01); C02F 3/30 (2006.01); C02F 1/66 (2006.01); C02F 1/44 (2006.01); C02F 1/20 (2006.01); C02F 103/00 (2006.01); C02F 1/76 (2006.01); C02F 1/42 (2006.01);
U.S. Cl.
CPC ...
C02F 9/00 (2013.01); B01D 61/022 (2013.01); B01D 61/04 (2013.01); C01B 25/26 (2013.01); C01B 25/45 (2013.01); C01F 11/22 (2013.01); C02F 1/52 (2013.01); C02F 1/5236 (2013.01); B01D 2311/04 (2013.01); B01D 2311/06 (2013.01); C02F 1/20 (2013.01); C02F 1/441 (2013.01); C02F 1/442 (2013.01); C02F 1/66 (2013.01); C02F 1/76 (2013.01); C02F 3/302 (2013.01); C02F 2001/425 (2013.01); C02F 2101/105 (2013.01); C02F 2101/14 (2013.01); C02F 2101/16 (2013.01); C02F 2103/007 (2013.01); C02F 2303/16 (2013.01);
Abstract
A method for treating, and recovering phosphate compounds from, phosphate-containing wastewater. The method includes the steps of: (a) removing fluoride from the wastewater; (b) recovering a phosphate compound from the wastewater by maintaining supersaturation conditions for the phosphate compound; and (c) polishing the wastewater. A silica removal step may be optionally performed after step (a) and before step (b).