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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.:

US 12351497 B1

PDFFull Text
Date of Patent:
Jul. 08, 2025

Filed:

Aug. 21, 2019

Methods and systems for treating phosphogypsum-containing water

Applicant:

Evoqua Water Technolgies Llc, Pittsburgh, PA (US);

Inventors:

Wenxin Du, Dover, NH (US);

Hao Dang, Dracut, MA (US);

George Y. Gu, Andover, MA (US);

Michael J. Shaw, Derry, NH (US);

Simon P. Dukes, Chelmsford, MA (US);

Justin Wayne Higgs, Nolensville, TN (US);

Assignee:

EVOQUA WATER TECHNOLOGIES LLC, Pittsburgh, PA (US);

Attorney:

Lando & Anastasi, LLP

Primary Examiner:

Joseph W Drodge

Int. Cl.
CPC ...
C02F 1/20 (2023.01); C02F 1/44 (2023.01); C02F 1/461 (2023.01); C02F 9/00 (2023.01); C05C 1/00 (2006.01); C02F 101/10 (2006.01); C02F 101/16 (2006.01);
U.S. Cl.
CPC ...
C02F 9/00 (2013.01); C02F 1/20 (2013.01); C02F 1/441 (2013.01); C02F 1/444 (2013.01); C02F 1/461 (2013.01); C05C 1/00 (2013.01); C02F 2101/105 (2013.01); C02F 2101/16 (2013.01); C02F 2209/06 (2013.01);
Abstract

Methods for treating phosphogypsum-containing water are disclosed. The water may be treated so as to promote precipitation of one or more target constituents and to facilitate downstream membrane treatment. A coagulant may be added to promote phosphate recovery. Ammonia may optionally be removed. Related systems are also disclosed.

Find Patent Forward Citations

Du, Wenxin. (2025). Methods and systems for treating phosphogypsum-containing water (U.S. Patent No. 12351497). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12351497

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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