Patents Assigned to Des Moines Metropolitan Wastewater Reclamation Authority
  • Phosphorus release reactor for water treatment
    Patent number: 11345624
    Abstract: The invention relates to treatment of microorganisms from an activated sludge process operating with enhanced biological phosphorus removal in a reactor with baffles or other devices to induce similar plug-flow effort, designed to optimally release phosphorus and/or magnesium from the microorganisms with or without chemical addition. Further, the disclosure relates to a process designed to produce both a lower solids, phosphorus and magnesium enriched liquid stream and a higher solids, phosphorus and magnesium enriched stream. The reactor operates to give optimal performance by operating in a plug-flow mode.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: May 31, 2022
    Assignee: Des Moines Metropolitan Wastewater Reclamation Authority
    Inventors: Patrick Anderson Brown, Eric Anthony Evans
  • Phosphorus release reactor for water treatment
    Patent number: 10968127
    Abstract: The invention relates to treatment of microorganisms from an activated sludge process operating with enhanced biological phosphorus removal in a reactor with baffles or other devices to induce similar plug-flow effort, designed to optimally release phosphorus and/or magnesium from the microorganisms with or without chemical addition. Further, the disclosure relates to a process designed to produce both a lower solids, phosphorus and magnesium enriched liquid stream and a higher solids, phosphorus and magnesium enriched stream. The reactor operates to give optimal performance by operating in a plug-flow mode.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 6, 2021
    Assignee: Des Moines Metropolitan Wastewater Reclamation Authority
    Inventors: Patrick Anderson Brown, Eric Anthony Evans