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. 15, 2011
Filed:
Mar. 31, 2009
Gerardo Buelna, Québec (Québec), CA;
Yann Le Bihan, Québec (Québec), CA;
Rino Dube, Québec (Québec), CA;
Paul Lessard, Québec (Québec), CA;
Caroline Dufour-l'arrivee, Lac Beauport (Québec), CA;
Gerardo Buelna, Québec (Québec), CA;
Yann Le Bihan, Québec (Québec), CA;
Rino Dube, Québec (Québec), CA;
Paul Lessard, Québec (Québec), CA;
Caroline Dufour-L'Arrivee, Lac Beauport (Québec), CA;
Other;
Abstract
A method of biofiltration of a liquid effluent by simultaneous nitrification and denitrification uses the adding of an oxygen source at a predetermined rate and optionally the adding of a carbon source (such as whey) thus enabling the complete transformation of the nitrates (NO) present in the effluent at the time of treatment through a biofilter. The specific operating conditions favoring the simultaneous nitrification and denitrification include the controlled injection of a slight quantity of air, adjustment of the level of nitrogen load (TKN+NO) and the level of carbon load thereby making possible elimination for the most part of the release of unwanted nitrogen in the form of NOor NO.