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. 25, 2003
Filed:
Sep. 21, 2001
Applicant:
Inventor:
Gerald A. Krulik, San Clemente, CA (US);
Assignee:
Ionics, Incorporated, Watertown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/52 ; C02F 1/72 ;
U.S. Cl.
CPC ...
C02F 1/52 ; C02F 1/72 ;
Abstract
An improved method of treating wastewater to remove ammonia and fluoride is provided. The method comprises the steps of chemical destruction of ammonia with an oxidizing agent, followed by treatment with calcium salts to precipitate insoluble calcium fluoride, and filtration to remove the precipitate.