Patents by Inventor Jonathan Dargavel

Jonathan Dargavel 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).

  • Utilization of biogas scrubber in anaerobic membrane bioreactor systems
    Patent number: 12472465
    Abstract: Methods of controlling hydrogen sulfide concentration of a biogas occupying an anaerobic membrane bioreactor (AnMBR) containing a submerged membrane are disclosed herein. Methods of controlling dissolved sulfide concentration of a mixed liquor within the AnMBR are disclosed. The methods include directing wastewater containing sulfur and a chemical oxygen demand (COD) to an AnMBR, withdrawing at least a fraction of the biogas from the AnMBR, directing a pre-determined amount of the withdrawn biogas to a scrubber, directing a remainder of the withdrawn biogas to a gas distributor, and directing the scrubbed biogas to the AnMBR. Systems for treating wastewater having sulfur and COD are disclosed. The systems include an AnMBR, a scouring gas closed loop, a scrubber, and a control mechanism for directing biogas to the scrubber and to a gas distributor. Methods of retrofitting a system for treating wastewater having sulfur and COD are disclosed.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: November 18, 2025
    Assignee: Evoqua Water Technologies Canada Ltd.
    Inventors: Dwain Wilson, Daniel Bertoldo, Josh Snowdon, Jonathan Dargavel, Shannon Grant
  • Utilization of biogas scrubber in anaerobic membrane bioreactor systems
    Publication number: 20230038934
    Abstract: Methods of controlling hydrogen sulfide concentration of a biogas occupying an anaerobic membrane bioreactor (AnMBR) containing a submerged membrane are disclosed herein. Methods of controlling dissolved sulfide concentration of a mixed liquor within the AnMBR are disclosed. The methods include directing wastewater containing sulfur and a chemical oxygen demand (COD) to an AnMBR, withdrawing at least a fraction of the biogas from the AnMBR, directing a pre-determined amount of the withdrawn biogas to a scrubber, directing a remainder of the withdrawn biogas to a gas distributor, and directing the scrubbed biogas to the AnMBR. Systems for treating wastewater having sulfur and COD are disclosed. The systems include an AnMBR, a scouring gas closed loop, a scrubber, and a control mechanism for directing biogas to the scrubber and to a gas distributor. Methods of retrofitting a system for treating wastewater having sulfur and COD are disclosed.
    Type: Application
    Filed: January 18, 2021
    Publication date: February 9, 2023
    Applicant: Evoqua Water Technologies Canada Ltd.
    Inventors: Dwain Wilson, Daniel Bertoldo, Josh Snowdon, Jonathan Dargavel, Shannon Grant