Patents by Inventor Caroline Dufour-L'Arrivee

Caroline Dufour-L'Arrivee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of biofiltration of a liquid effluent
    Patent number: 7887706
    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 (NO3) 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+NO3) and the level of carbon load thereby making possible elimination for the most part of the release of unwanted nitrogen in the form of NO3 or NO2.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: February 15, 2011
    Inventors: Gerardo Buelna, Yann Le Bihan, Rino Dube, Paul Lessard, Caroline Dufour-L'Arrivee
  • METHOD OF BIOFILTRATION OF A LIQUID EFFLUENT
    Publication number: 20090242482
    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 (NO3) 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+NO3) and the level of carbon load thereby making possible elimination for the most part of the release of unwanted nitrogen in the form of NO3 or NO2.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Inventors: Gerardo BUELNA, Yann LE BIHAN, Rino DUBE, Paul LESSARD, Caroline DUFOUR-L'ARRIVEE