Patents Assigned to Andgar Corporation
  • Nutrient recovery systems and methods
    Patent number: 10556804
    Abstract: Methods, systems, and apparatuses for anaerobic digestion of waste fibrous material and the recovery of nutrients are provided. Methods, systems, and apparatuses disclosed herein provide mechanisms to release dissolved gases from anaerobic digester effluent. Methods, systems and apparatuses disclosed herein can recover one or more nutrients from anaerobic digested effluent using a range of temperatures, aeration rates, aeration times, pH ranges, and settling times.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 11, 2020
    Assignees: DVO, INC., WASHINGTON STATE UNIVERSITY, ANDGAR CORPORATION
    Inventors: Quanbao Zhao, Stephen W. Dvorak, Shulin Chen, Craig Frear, Bryan J. VanLoo
  • Nutrient recovery systems and methods
    Patent number: 8613894
    Abstract: Methods, systems, and apparatuses for anaerobic digestion of waste fibrous material and the recovery of nutrients are provided. Methods, systems, and apparatuses disclosed herein provide mechanisms to release dissolved gases from anaerobic digester effluent. Methods, systems and apparatuses disclosed herein can recover one or more nutrients from anaerobic digested effluent using a range of temperatures, aeration rates, aeration times, pH ranges, and settling times.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: December 24, 2013
    Assignees: DVO, Inc., Washington State University, Andgar Corporation
    Inventors: Quanbao Zhao, Stephen W. Dvorak, Shulin Chen, Craig Frear, Bryan J. VanLoo