Patents by Inventor Mikkel G. Mandt

Mikkel G. Mandt 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).

  • Surge anoxic mix sequencing batch reactor systems
    Patent number: 6676836
    Abstract: Wastewater treatment systems which utilize an interacting surge anoxic mix zone for facilitating nitrogen removal and an aerobic sequential batch reaction, clarification and decantation zone for facilitating aeration for BOD removal and nitrate production for the surge anoxic mix zone. Sludge reduction may also be accomplished by anaerobic recycle.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: January 13, 2004
    Inventor: Mikkel G. Mandt
  • Surge anoxic mix sequencing batch reactor system
    Publication number: 20030136731
    Abstract: Wastewater treatment systems which utilize an interacting surge anoxic mix zone for facilitating nitrogen removal and an aerobic sequential batch reaction, clarification and decantation zone for facilitating aeration for BOD removal and nitrate production for the surge anoxic mix zone. Sludge reduction may also be accomplished by anaerobic recycle.
    Type: Application
    Filed: April 19, 2002
    Publication date: July 24, 2003
    Inventor: Mikkel G. Mandt
  • Surge anoxic mix sequencing batch reactor systems
    Patent number: 6398957
    Abstract: Wastewater treatment systems which utilize an interacting surge anoxic mix zone for facilitating nitrogen removal and an aerobic sequential batch reaction, clarification and decantation zone for facilitating aeration for BOD removal and nitrate production for the surge anoxic mix zone. Sludge reduction may also be accomplished by anaerobic recycle.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: June 4, 2002
    Inventor: Mikkel G. Mandt
  • Surge anoxic mix sequencing batch reactor systems
    Patent number: 6190554
    Abstract: Wastewater treatment systems which utilize an interacting surge anoxic mix zone for facilitating nitrogen removal and an aerobic sequential batch reaction, clarification and decantation zone for facilitating aeration for BOD removal and nitrate production for the surge anoxic mix zone.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: February 20, 2001
    Inventor: Mikkel G. Mandt
  • Retrievable jet mixing systems
    Patent number: 4618426
    Abstract: Apparatus for jet aeration of wastewater which may be readily retrieved for cleaning or other servicing and replaced in service. Methods of placing the aeration apparatus in service are also provided.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: October 21, 1986
    Inventor: Mikkel G. Mandt
  • Sequencing batch reactor decanter systems
    Patent number: 4596658
    Abstract: Methods and apparatus for decanting clarified waste water in a sequencing batch reactor or the like.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: June 24, 1986
    Inventor: Mikkel G. Mandt
  • Subcyclonic jet recirculation grit removal system
    Patent number: 4576720
    Abstract: Methods and apparatus for subcyclonic grit separation under aeration conditions utilizing elevated wastewater hydraulic jet recirculation systems.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: March 18, 1986
    Inventor: Mikkel G. Mandt
  • Multi stage flocculation treatment system
    Patent number: 4372851
    Abstract: Systems for flocculation processing in water purification treatment in which a first jet flash mixing field of relatively high specific energy requirement and turbulence intensity is provided for intimate mixture of the flocculant and influent water to produce a thoroughly mixed product stream having residual energy, and in which the product stream from the first mixing field is used as the motive stream to power a flocculation field of lower specific energy requirement and turbulence intensity.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: February 8, 1983
    Assignee: Clevepak Corporation
    Inventor: Mikkel G. Mandt
  • Nitrification-denitrification system
    Patent number: 4290884
    Abstract: Activated sludge treatment system for removal of pretreatment BOD and nitrogen values from waste water, utilizing a mixed liquor tank comprising a nitrate cracking channel zone, a denitrification channel zone and an aeration zone in specified relationship and adapted to provide specified operating conditions in the respective zones.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: September 22, 1981
    Assignee: Clevepak Corporation
    Inventor: Mikkel G. Mandt
  • Multi stage flocculation treatment system
    Patent number: 4206052
    Abstract: Systems for flocculation processing in water purification treatment in which a first jet flash mixing field of relatively high specific energy requirement and turbulence intensity is provided for intimate mixture of the flocculant and influent water to produce a thoroughly mixed product stream having residual energy, and in which the product stream from the first mixing field is used as the motive stream to power a flocculation field of lower specific energy requirement and turbulence intensity.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: June 3, 1980
    Assignee: Houdaille Industries, Inc.
    Inventor: Mikkel G. Mandt
  • Multi-stage systems for waste water oxidation
    Patent number: 4206047
    Abstract: Methods of the activated sludge type for treating sewage utilizing specific mixing regimes and oxygen demand rates. The systems are particularly advantageous in utilization of relatively pure oxygen in a final stage treatment zone, and in which no more than 10% of the total oxygen requirement for all zones is required for high purity oxygen.
    Type: Grant
    Filed: July 13, 1978
    Date of Patent: June 3, 1980
    Assignee: Houdaille Industries, Inc.
    Inventor: Mikkel G. Mandt
  • Jet aeration channel system
    Patent number: 4199452
    Abstract: Activated sludge waste water treatment systems utilizing influent and/or sludge return flow as pressurized gas-liquid contactor motive stream source and having improved energy efficiency. Staged flow control systems are also disclosed.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: April 22, 1980
    Assignee: Houdaille Industries, Inc.
    Inventor: Mikkel G. Mandt
  • Method for polymer dissolution
    Patent number: 4100614
    Abstract: A method and apparatus for dissolution of comminuted organopolymeric materials such as water and waste water flocculant polymer, in which the polymer is educted into a series of ejector mixers and into a mixing zone.
    Type: Grant
    Filed: June 18, 1976
    Date of Patent: July 11, 1978
    Assignee: Houdaille Industries, Inc.
    Inventor: Mikkel G. Mandt
  • Disinfection system and method
    Patent number: 4019983
    Abstract: A rapid and efficient method for disinfection of waste liquid such as sewage effluent by means of a fluid disinfecting agent, (e.g. ozone or chlorine) in which the disinfecting agent and all of the waste liquid to be treated pass through a turbulent flow zone within a limited period of time. Also disclosed is specific apparatus for carrying out the method.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: April 26, 1977
    Assignee: Houdaille Industries, Inc.
    Inventor: Mikkel G. Mandt