Patents by Inventor Bart De Heyder

Bart De Heyder 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).

  • Process and installation for treating a polluted aqueous liquid showing a COD value
    Patent number: 6811702
    Abstract: The invention relates to a process and installation for treating a polluted aqueous liquid having a COD value caused by organic compounds present therein and a BOD/COD ratio smaller than 0.2. To reduce the COD value, the polluted aqueous liquid is percolated through a packed filter bed (7) of a carrier material, in particular of activated carbon, which is colonised with aerobic bacteria and which forms an adsorbent for at least part of said organic compounds. To provide a thin, fully aerated biofilm of bacteria on the carrier material so that no oxygen has to be dissolved under pressure in the liquid, the filter bed is kept at the most partially submerged in the liquid percolating therethrough.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: November 2, 2004
    Assignees: Aquafin N.V., Severn Trent Water Ltd.
    Inventors: Willy Verstraete, Kris Van Hege, Dieter Geenens, Bart De Heyder, Chris Thoeye
  • Process and installation for treating a polluted aqueous liquid showing a COD value
    Publication number: 20030006189
    Abstract: The invention relates to a process and installation for treating a polluted aqueous liquid having a COD value caused by organic compounds present therein and a BOD/COD ratio smaller than 0.2. To reduce the COD value, the polluted aqueous liquid is percolated through a packed filter bed (7) of a carrier material, in particular of activated carbon, which is colonised with aerobic bacteria and which forms an adsorbent for at least part of said organic compounds. To provide a thin, fully aerated biofilm of bacteria on the carrier material so that no oxygen has to be dissolved under pressure in the liquid, the filter bed is kept at the most partially submerged in the liquid percolating therethrough.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 9, 2003
    Inventors: Willy Verstraete, Kris Van Hege, Dieter Geenens, Bart De Heyder, Chris Thoeye