Patents by Inventor Stephen A. Schupbach

Stephen A. Schupbach 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).

  • Wastewater solids removal methods
    Patent number: 6793823
    Abstract: In a wastewater treatment process involving activated sludge, the invention provides a method for improving suspended solids removal without the need for chemical coagulants. Improved solids removal is obtained through the reintroduction of return activated sludge as a natural flocculent prior to tertiary filtration. In some applications algal solids can be pre-filtered from equalization or detention ponds and lagoons by return activated sludge addition followed by mixing and high solids filtration. The inventions result in improved solids removal and longer run times for the treatment processes with reduced need for chemical coagulants.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: September 21, 2004
    Assignee: Aqua-Aerobics Systems, Inc.
    Inventors: Ronald R. Hubenthal, Stephen A. Schupbach
  • Wastewater solids removal methods
    Publication number: 20040026317
    Abstract: In a wastewater treatment process involving activated sludge, the invention provides a method for improving suspended solids removal without the need for chemical coagulants. Improved solids removal is obtained through the reintroduction of return activated sludge as a natural flocculent prior to tertiary filtration. In some applications algal solids can be pre-filtered from equalization or detention ponds and lagoons by return activated sludge addition followed by mixing and high solids filtration. The inventions result in improved solids removal and longer run times for the treatment processes with reduced need for chemical coagulants.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Inventors: Ronald R. Hubenthal, Stephen A. Schupbach