Patents by Inventor Baoqiang Ling

Baoqiang Ling 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 for reducing concentrations of hair, trash, or fibrous materials, in a waste water treatment system
    Patent number: 6814868
    Abstract: A process for reducing hair, trash or fibrous materials concentration in a waste water treatment system having a membrane filter in conjunction with a bioreactor comprises flowing a portion of mixed liquor through a screen in a side stream. The flow rate of the mixed liquor through the screen is about no more than the average design flow rate of the waste water treatment system. The screenings can be either treated or disposed of directly or in combination with the waste activated sludge. The openings of the screen are between about 0.10 mm and about 1.0 mm in size as can be provided by, for example, a rotary drum screen. The invention can be used to provide both screening and sludge thickening.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 9, 2004
    Assignee: Zenon Environmental Inc.
    Inventors: Deonarine Phagoo, Pierre Coté, Hidayat Husain, Doug Thompson, Baoqiang Ling