Patents by Inventor Philippe Sauvignet

Philippe Sauvignet 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).

  • Patent number: 7648637
    Abstract: The invention relates to a method for removing impurities from an aqueous stream. The method includes directing the aqueous stream into an adsorbent contact zone and contacting the aqueous stream with an adsorbent material in the adsorbent contact zone so that impurities in the aqueous stream are adsorbed onto the adsorbent material. The aqueous stream and the adsorbent material is then directed to a ballasted flocculation zone where the adsorbent material is mixed with ballast to form sludge. The aqueous stream is then separated from the sludge to produce treated water and the sludge is settled in a settling zone. The ballast is then separated from the sludge and directed to the ballasted flocculation zone while the sludge and the adsorbent material are directed to a transition zone.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: January 19, 2010
    Assignee: OTV S.A.
    Inventors: Philippe Sauvignet, Abdelkader Gaid
  • Publication number: 20090308815
    Abstract: A method for treating water in a ballasted flocculation system comprises directing water into a ballasted flocculation zone and adding ballast and a flocculation reagent to the water to form a water-floc mixture. The water-floc mixture is directed into a settling zone to form treated water and sludge containing ballast. The ballast is then directed to a recirculation line where the ballast is recirculated to the ballasted flocculation zone. The method further includes determining the ballast concentration and comparing the ballast concentration with a predetermined threshold value. The rate at which ballast is recirculated to the ballasted flocculation zone is adjusted based on the determined ballast concentration and the predetermined threshold value.
    Type: Application
    Filed: July 25, 2007
    Publication date: December 17, 2009
    Applicant: OTV SA
    Inventors: Philippe Sauvignet, Jean-Francois Beaudet, Sonia Guillot, Valery Ursel
  • Publication number: 20090218281
    Abstract: The inventive water treating method and arrangement successively combine at least one step consisting in biological treating at least one part of pollution contained in said waters by a fixed biomass, wherein a bio-cleaned flow logically obtainable at the and of said step, prior to the entry thereof to a next step, contains less than 2 g/l of SS, and at least one stage for carrying out a flocculation-decantation by ballasted flocs consisting in transferring biologically treated flow to a mixing area (2), preferentially at a velocity gradient ranging from 10 s?1 to 1000 s?1, wherein at least one type of denser than water insoluble granulated material is injected and suspended matters are aggregated around said granulated material particles, in transferring the flow issued from the mixing area (2) to a decantation area, wherein the clarified flow and decantation sludges mixed with the granulated material are separated, in extracting granulated material from the decantation sludges, in recycling major part there
    Type: Application
    Filed: October 23, 2006
    Publication date: September 3, 2009
    Applicant: OTV SA
    Inventors: Philippe Sauvignet, Kashi Banerjee, Charles Blumenschein
  • Publication number: 20090050570
    Abstract: A method for treating water includes directing untreated water into a mixing zone in a water treatment system and mixing the untreated water with a flocculating agent and a ballast to form a ballast-floc mixture. Thereafter, the ballast-floc mixture is directed to a settling zone where the mixture settles to form sludge. Treated water is discharged from the settling zone and the sludge is directed to a separator. The method further includes separating at least a portion of the ballast from the sludge and directing the separated ballast from the separator to the mixing zone. Finally, the sludge is directed from the separator to a sludge treatment reactor where at least some of the remaining ballast settles from the sludge and substantially ballast-free sludge is discharged from the sludge treatment reactor.
    Type: Application
    Filed: February 19, 2007
    Publication date: February 26, 2009
    Applicant: OTV SA
    Inventor: Philippe Sauvignet
  • Publication number: 20080296228
    Abstract: A method for removing helminth egg and other suspended solids from a wastewater stream includes directing the wastewater to a ballasted flocculation system and adding a coagulation agent, flocculation agent and a ballast into the wastewater. Sludge is settled from the wastewater in a settling tank at a rate of at least 10 meters per hour. The method further includes removing helminth egg by filtering the effluent through a fine screen having a mesh diameter of approximately 5 micrometers to approximately 25 micrometers. After passing through the fine screen, the filtered effluent has less than one helminth egg per liter.
    Type: Application
    Filed: November 2, 2006
    Publication date: December 4, 2008
    Applicant: OTV SA
    Inventors: Philippe Sauvignet, Claus Poulsen Dahl