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:
Mar. 10, 2026
Filed:
Aug. 21, 2019
Applicant:
Evoqua Water Technologies Llc, Pittsburgh, PA (US);
Inventors:
Assignee:
Evoqua Water Technologies LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 9/00 (2023.01); B01D 61/02 (2006.01); B01D 61/04 (2006.01); C01C 1/24 (2006.01); C05C 3/00 (2006.01); C02F 1/20 (2023.01); C02F 1/42 (2023.01); C02F 1/44 (2023.01); C02F 1/52 (2023.01); C02F 1/66 (2023.01); C02F 5/02 (2023.01); C02F 101/10 (2006.01); C02F 101/14 (2006.01); C02F 101/16 (2006.01);
U.S. Cl.
CPC ...
C02F 9/00 (2013.01); B01D 61/025 (2013.01); B01D 61/04 (2013.01); C01C 1/24 (2013.01); C05C 3/00 (2013.01); B01D 2311/02 (2013.01); B01D 2311/04 (2013.01); B01D 2311/2623 (2013.01); B01D 2311/2642 (2013.01); B01D 2311/268 (2013.01); C02F 1/20 (2013.01); C02F 1/42 (2013.01); C02F 2001/425 (2013.01); C02F 1/441 (2013.01); C02F 1/5245 (2013.01); C02F 1/529 (2013.01); C02F 1/66 (2013.01); C02F 5/02 (2013.01); C02F 2101/105 (2013.01); C02F 2101/14 (2013.01); C02F 2101/16 (2013.01); C02F 2301/046 (2013.01);
Abstract
Methods for processing pretreated phosphogypsum wastewater are disclosed. Precipitation of select constituents may be promoted to control a hardness level of the pretreated wastewater. Ammonia may then be removed from the process stream via reverse osmosis. A membrane contactor and/or polishing unit(s) may optionally be used. Related systems are also disclosed.