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:
Apr. 09, 2019
Filed:
Sep. 24, 2015
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
Abstract
A process for converting ammonium (NH) of a mainstream of a wastewater plant to dinitrogen gas (N), including the consecutive steps of i.) removing biodegradable carbon compounds in the mainstream, ii.) converting ammonium (NH) in the mainstream to nitrite (NO) in an aerated biological process containing ammonium oxidizing bacteria (AOB) in a nitration vessel (-); and iii.) denitrifying the resulting stream from step ii.) to dinitrogen gas in an anammox vessel (). Growth of nitrite oxidizing bacteria (NOB) in step ii.) is prevented by periodically subjecting the bacteria in said nitration vessel (-) to water suppressing growth of nitrite oxidizing bacteria (NOB).