Patents by Inventor Thomas E. Vik

Thomas E. Vik 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 system for enhanced nitrogen removal in a wetland and recirculating sand filter wastewater treatment system
    Patent number: 7128839
    Abstract: A process and system for enhanced nitrogen removal in a wastewater treatment facility comprises a constructed wetlands and a recirculating sand filter. The effluent from the constructed wetlands passes through the recirculating sand filter to facilitate ammonia conversion to nitrates. A portion of the wastewater is recycled from the recirculating sand filter to the constructed wetlands to provide for anaerobic denitrification of the wastewater in a nutrient rich environment.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: October 31, 2006
    Inventors: David A. Flowers, Thomas E. Vik