Patents by Inventor Gerd Peter Waschke

Gerd Peter Waschke 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).

  • Waste-activated sludge treatment methods and apparatus
    Patent number: 8101082
    Abstract: A method for treating waste-activated sludge comprises adding (1) a pozzolanic material to waste-activated sludge to form a mixture. The mixture is homogenized and aerated (2). The pozzolanic material reacts with the waste-activated sludge. The mixture is allowed to settle (3). A portion of the mixture is recirculated (4) from a downstream location to an upstream location. The recycled mixture includes pozzolanic material. Some embodiments provide advantages over existing wastewater treatment methods which may include: reduction or elimination of unpleasant odours, reduction of overall costs, conversion of waste into useful products, and/or reduction or elimination of discharged bacteria or other undesirable materials.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: January 24, 2012
    Assignee: Pierway Envromental Inc.
    Inventor: Gerd Peter Waschke
  • WASTE-ACTIVATED SLUDGE TREATMENT METHODS AND APPARATUS
    Publication number: 20090166288
    Abstract: A method for treating waste-activated sludge comprises adding (1) a pozzolanic material to waste-activated sludge to form a mixture. The mixture is homogenized and aerated (2). The pozzolanic material reacts with the waste-activated sludge. The mixture is allowed to settle (3). A portion of the mixture is recirculated (4) from a downstream location to an upstream location. The recycled mixture includes pozzolanic material. Some embodiments provide advantages over existing wastewater treatment methods which may include: reduction or elimination of unpleasant odours, reduction of overall costs, conversion of waste into useful products, and/or reduction or elimination of discharged bacteria or other undesirable materials.
    Type: Application
    Filed: May 11, 2007
    Publication date: July 2, 2009
    Inventor: Gerd Peter Waschke