Patents by Inventor Laure GRAVELEAU BILLEMAZ

Laure GRAVELEAU BILLEMAZ 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).

  • Sequencing batch facility and method for reducing the nitrogen content in waste water
    Patent number: 10259732
    Abstract: A method for treating effluents containing nitrogen in the form of ammonium, implementing chemical reactions for oxidizing and reducing the nitrogen in a sequencing batch reactor, the method including: introducing a volume of effluents to be treated into the reactor, injecting oxygen or air into the reactor for partial oxidation of the ammonium into nitrites and/or nitrates, interrupting the injection of oxygen or air, thus producing gaseous nitrogen, depositing the sludge at the bottom of the reactor and clarifying the content of the reactor close to the surface of same, discharging a clarified fraction of the content of the reactor. The draining and feeding steps occur simultaneously. During the feeding step, the volume of effluents is introduced close to the bottom of the reactor. During the draining step, the clarified fraction of the content of the reactor is discharged close to the surface of the content of the reactor.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: April 16, 2019
    Assignee: SUEZ INTERNATIONAL
    Inventors: Philippe Ginestet, Laure Graveleau Billemaz
  • SEQUENCING BATCH FACILITY AND METHOD FOR REDUCING THE NITROGEN CONTENT IN WASTE WATER
    Publication number: 20170225988
    Abstract: A method for treating effluents containing nitrogen in the form of ammonium, implementing chemical reactions for oxidizing and reducing the nitrogen in a sequencing batch reactor, the method including: introducing a volume of effluents to be treated into the reactor, injecting oxygen or air into the reactor for partial oxidation of the ammonium into nitrites and/or nitrates, interrupting the injection of oxygen or air, thus producing gaseous nitrogen, depositing the sludge at the bottom of the reactor and clarifying the content of the reactor close to the surface of same, discharging a clarified fraction of the content of the reactor. The draining and feeding steps occur simultaneously. During the feeding step, the volume of effluents is introduced close to the bottom of the reactor. During the draining step, the clarified fraction of the content of the reactor is discharged close to the surface of the content of the reactor.
    Type: Application
    Filed: July 30, 2015
    Publication date: August 10, 2017
    Applicant: SUEZ INTERNATIONAL
    Inventors: Philippe GINESTET, Laure GRAVELEAU BILLEMAZ