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:
Feb. 04, 2020
Filed:
Feb. 10, 2015
Kurita Water Industries Ltd., Tokyo, JP;
Shuhei Izawa, Tokyo, JP;
KURITA WATER INDUSTRIES LTD., Tokyo, JP;
Abstract
A method for treating ammonia-containing water containing ammonia, metal ions that form a complex with ammonia, and a reducing substance includes a first step of oxidizing the reducing substance by adding hydrogen peroxide to the ammonia-containing water; a second step of aerating the resultant water treated in the first step to remove the ammonia; a third step of forming an insoluble solid at a pH of 7 to 12 by adding at least one compound selected from the group consisting of iron salts, aluminum salts, calcium salts, and calcium hydroxide to the water treated in the second step; and a fourth step of separating the insoluble solid formed in the third step by solid-liquid separation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile