Patents by Inventor Francoise Delsalle

Francoise Delsalle 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 and installation for treating an untreated flow by simple sedimentation after ballasting with fine sand
    Patent number: 6010631
    Abstract: In a method of treating an untreated flow of liquid charged with particles and/or colloids, the flow is caused to flow in a coagulation zone that is kept turbulent and in which the flow is mixed with a coagulant. The untreated flow and a granular material which is insoluble in and more dense than the flow are caused to flow in an intermediate zone in which the granular material is maintained in suspension. The flow with substantially all of the added granular material and the colloids or particles aggregated therein is caused to flow in a sedimentation zone in which a clarified effluent is separated from sludge consisting of the granular material and the aggregated particles or colloids. The sedimentation zone has an undivided flow cross section, with no separator plates and the effluent is caused to flow therein at an average settling speed of at least 15 m/h.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: January 4, 2000
    Assignee: Omnium de Traitement et de Valorisation (OTV)
    Inventors: Francoise Delsalle, Nicolas Lepoder, Patrick Binot
  • Method and installation for treating an untreated flow by simple sedimentation after ballasting with fine sand
    Patent number: 5840195
    Abstract: In a method of treating an untreated flow of liquid charged with particles and/or colloids, the flow is caused to flow in a coagulation zone that is kept turbulent and in which the flow is mixed with a coagulant. The untreated flow and a granular material which is insoluble in and more dense than the flow are caused to flow in an intermediate zone in which the granular material is maintained in suspension. The flow with substantially all of the added granular material and the colloids or particles aggregated therein is caused to flow in a sedimentation zone in which a clarified effluent is separated from sludge consisting of the granular material and the aggregated particles or colloids. The sedimentation zone has an undivided flow cross section, with no separator plates and the effluent is caused to flow therein at an average settling speed of at least 15 m/h.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: November 24, 1998
    Assignee: Omnium de Traitement et de Valorisation
    Inventors: Francoise Delsalle, Nicholas Lepoder, Patrick Binot