Patents by Inventor Yong Hyo Park

Yong Hyo Park 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).

  • Activated sludge process using downflow sludge blanket filtration
    Patent number: 7485231
    Abstract: The present invention relates to an activated sludge process and apparatus for effectively removing organic matters, nutrient salts, particulates, etc. dissolved in sewage/waste water by operating activated sludge process of a high biomass concentration combined with a down-flow solid-liquid separation process utilizing a float-concentrated sludge blanket layer. The present invention provides a process for biologically treating sewage/waste water using activated sludge, comprising the steps of (a) floating a sludge by having micro bubbles rise to form a float-concentrated sludge blanket layer and (b) down-flowing mixed liquor, including activated sludge and solids, into the sludge blanket layer, thereby resulting in a solid-liquid separation and an apparatus for operating the process.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: February 3, 2009
    Assignees: GS Engineering & Construction Corp., SBF Inc.
    Inventors: Ik Tai Yeom, Hyung Soo Kim, Young Gyun Choi, Yong Hyo Park