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:
May. 17, 2016
Filed:
Sep. 13, 2013
D.c. Water & Sewer Authority, Washington, DC (US);
Hampton Roads Sanitation District, Virginia Beach, VA (US);
Bernhard Wett, Innsbruck, AT;
Ahmed Omari, Washington, DC (US);
Pusker Regmi, Virginia Beach, VA (US);
Mark Miller, Virginia Beach, VA (US);
Charles B. Bott, Virginia Beach, VA (US);
Sudhir N. Murthy, Washington, DC (US);
D.C. Water & Sewer Authority, Washington, DC (US);
Hampton Roads Sanitation District, Virginia Beach, VA (US);
Abstract
A reactor and control method thereof for nitrogen removal in wastewater treatment achieves a measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) repression, using various control strategies, including: 1) ammonia and the use of ammonia setpoints, 2) operational DO and the proper use of DO setpoints, 3) bioaugmentation of a lighter flocculant AOB fraction, and 4) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions.