Patents by Inventor Bernd Striegel

Bernd Striegel 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).

  • Apparatus and process for biological wastewater purification
    Patent number: 6620323
    Abstract: The present invention relates to an apparatus and a process for biological wastewater purification. According to the invention an activation tank (10) is provided in which, with feed of a catalyst, wastewater constituents are degraded by degradation means (11), for example microorganisms, suspended in the wastewater. In the activation tank (10) is disposed at least one lamellae pack (50) in or on which the degradation means (11) suspended in the wastewater are separated out by sedimentation to fall as thickened sedimentation means sludge (11′) to the bottom region (15) of the activation tank (10). In the said bottom region (15) of the activation tank (10) is provided forced recirculation (20, 22) of the degradation means, which takes up the thickened degradation means sludge (11′) and recirculates it as suspended degradation means (11) back to the activation tank (10).
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 16, 2003
    Assignee: Axel Johnson Engineering GmbH
    Inventors: Stefan Hother, Gerhard Probst, Klaus Rocznik, Bernd Striegel
  • Apparatus and process for biological wastewater purification
    Publication number: 20010017281
    Abstract: The present invention relates to an apparatus and a process for biological wastewater purification. According to the invention an activation tank (10) is provided in which, with feed of a catalyst, wastewater constituents are degraded by degradation means (11), for example microorganisms, suspended in the wastewater. In the activation tank (10) is disposed at least one lamellae pack (50) in or on which the degradation means (11) suspended in the wastewater are separated out by sedimentation to fall as thickened sedimentation means sludge (11′) to the bottom region (15) of the activation tank (10). In the said bottom region (15) of the activation tank (10) is provided forced recirculation (20, 22) of the degradation means, which takes up the thickened degradation means sludge (11′) and recirculates it as suspended degradation means (11) back to the activation tank (10).
    Type: Application
    Filed: December 21, 2000
    Publication date: August 30, 2001
    Inventors: Stefan Hother, Gerhard Probst, Klaus Rocznik, Bernd Striegel