Patents by Inventor Jue Qian

Jue Qian 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).

  • Sewage treatment process and system
    Patent number: 9045356
    Abstract: A sewage treatment process is provided, which includes the following steps: a) sewage feeding step, comprising introducing raw sewage into a biological reaction tank (1) to a predetermined time or liquid level; b) reaction step comprising performing aeration and stirring intermittently in the biological reaction tank (1); c) treated water discharging step, comprising performing solid-liquid separation of the mixed liquid in the biological reaction tank (1) by a membrane separation device (2) to obtain a first permeate, which is taken as the final treated water; d) standby step comprising stopping aeration in the biological reaction tank (1); and e) phosphorus-enriched water discharging step, comprising keeping anaerobic condition in the biological reaction tank (1) and performing solid-liquid separation of the mixed liquid in the biological reaction tank (1) by a membrane separation device (2) to obtain a second permeate, the second permeate entering inside a phosphorus recycling unit (5) which is set indepen
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 2, 2015
    Inventors: Youfeng Sun, Jue Qian
  • Sewage Treatment Process and System
    Publication number: 20120018374
    Abstract: A sewage treatment process is provided, which includes the following steps: a) sewage feeding step, comprising introducing raw sewage into a biological reaction tank (1) to a predetermined time or liquid level; b) reaction step comprising performing aeration and stirring intermittently in the biological reaction tank (1); c) treated water discharging step, comprising performing solid-liquid separation of the mixed liquor in the biological reaction tank (1) by a membrane separation device (2) to obtain a first permeate, which is taken as the final treated water; d) standby step comprising stopping aeration in the biological reaction tank (1); and e) phosphorus-enriched water discharging step, comprising keeping anaerobic condition in the biological reaction tank (1) and performing solid-liquid separation of the mixed liquor in the biological reaction tank (1) by a membrane separation device (2) to obtain a second permeate, the second permeate entering inside a phosphorus recycling unit (5) which is set indepen
    Type: Application
    Filed: May 26, 2009
    Publication date: January 26, 2012
    Inventors: Youfeng Sun, Jue Qian