Patents by Inventor Manwinder Singh

Manwinder Singh 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).

  • Publication number: 20070001324
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: September 6, 2006
    Publication date: January 4, 2007
    Inventors: Pierre Cote, Arnold Janson, Hamid Rabie, Manwinder Singh
  • Publication number: 20060273038
    Abstract: Membranes, for example immersed polymeric ultrafiltration or microfiltration membranes, are cleaned by contacting them with a chemical cleaner comprising one or more of a gluconate, a hydrosulfite, a metabisulfite or an acid, for example phosphoric acid. The membranes may have been exposed to organic or inorganic foulants, some of which may have resulted from pretreatment involving adding coagulants, for example coagulants containing iron or aluminum, to water to be treated. Methods for treating a waste cleaning solution were described.
    Type: Application
    Filed: March 24, 2006
    Publication date: December 7, 2006
    Inventors: Murtuza Syed, Nicholas Adams, Manwinder Singh, Istvan Zsirai
  • Publication number: 20060118487
    Abstract: Various filtration processes using low amounts of aeration are disclosed. One process comprises a cycle of permeating and then backwashing, aerating, partially draining the tank and refilling the tank. Another process comprises steps of (a) permeating and withdrawing retentate; (b) after (a), backwashing; and (c) during (a), providing gentle aeration.
    Type: Application
    Filed: November 7, 2005
    Publication date: June 8, 2006
    Inventors: Nicholas Adams, Manwinder Singh, Fraser Kent, Pierre Cote
  • Patent number: 7025885
    Abstract: A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by partially emptying and refilling the tank with fresh water. The emptying and refilling may be performed generally simultaneously or sequentially. In another embodiment, the membrane modules are arranged in a series of filtration zones between a feed water inlet and a retentate outlet of a tank and the zone adjacent the outlet is emptied and refilled.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: April 11, 2006
    Assignee: ZENON Environmental Inc.
    Inventors: Pierre Cote, Arnold Janson, Hadi Husain, Manwinder Singh, Nicholas Adams
  • Patent number: 7014173
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: March 21, 2006
    Assignee: ZENON Environmental Inc.
    Inventors: Hamid R. Rabie, Pierre Lucien Cote, Manwinder Singh, Arnold Janson, Steven Kristian Pedersen, Henry Behmann
  • Publication number: 20060033220
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: October 24, 2005
    Publication date: February 16, 2006
    Inventors: Manwinder Singh, Pierre Cote, Hamid Rabie
  • Publication number: 20060006112
    Abstract: A process for supplying bubbles to a membrane module and cleaning an aerator producing the bubbles includes, in repeated cycles, steps of producing bubbles from an aerator and reducing pressure in the aerator such that water in the tank enters the aerator.
    Type: Application
    Filed: July 11, 2005
    Publication date: January 12, 2006
    Inventors: Hamid Rabie, Pierre Cote, Manwinder Singh, Arnold Janson
  • Publication number: 20050194315
    Abstract: A membrane batch filtration process has a step of reducing the water level in the tank by permeation prior to emptying the tank to reduce the volume of water drained after each batch. Permeation may continue even after a portion of the membranes is exposed to air to further lower the water level. The membranes may be backwashed after the water level has been lowered. The water level may be lowered again after the backwash. The tank drain may begin with a portion of the membranes exposed to air.
    Type: Application
    Filed: February 22, 2005
    Publication date: September 8, 2005
    Inventors: Nicholas Adams, Manwinder Singh, Kevin Dufresne, Pierre Cote
  • Publication number: 20050115900
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: November 15, 2004
    Publication date: June 2, 2005
    Inventors: Pierre Cote, Arnold Janson, Hamid Rabie, Manwinder Singh
  • Patent number: 6899812
    Abstract: A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by at least partially emptying and refilling the tank with fresh water while permeation continues. In another aspect, long trains of membranes modules are placed in series along a flow path in the tank. In one embodiment, constant aeration is provided to prevent tank water from by-passing the membrane modules while proving controlled mixing such that the average concentration of solids in the tank is lower than the concentration of solids in the tank near an outlet for removing retentate from the tank. In another embodiment, the membrane modules are arranged in a series of filtration zones between a feed water inlet and a retentate outlet of a tank. Permeate is withdrawn from the filtration zones by separate means associated with each filtration zone.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 31, 2005
    Assignee: Zenon Environmental Inc.
    Inventors: Pierre Cote, Arnold Janson, Hadi Husain, Manwinder Singh, Nicholas Adams
  • Publication number: 20050082227
    Abstract: A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by partially emptying and refilling the tank with fresh water. The emptying and refilling may be performed generally simultaneously or sequentially. In another embodiment, the membrane modules are arranged in a series of filtration zones between a feed water inlet and a retentate outlet of a tank and the zone adjacent the outlet is emptied and refilled.
    Type: Application
    Filed: December 8, 2004
    Publication date: April 21, 2005
    Inventors: Pierre Cote, Arnold Janson, Hadi Husain, Manwinder Singh, Nicholas Adams
  • Patent number: 6881343
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: April 19, 2005
    Assignee: ZENON Environmental Inc.
    Inventors: Hamld R. Rabie, Pierre Lucien Cote, Manwinder Singh, Arnold Janson
  • Publication number: 20040124132
    Abstract: Carbon dioxide, liberated by introducing fouling inhibiting bubbles into a tank containing an immersed membrane module, is captured and returned to the tank by way of the bubbles to minimize increases in pH in the tank water caused by carbon dioxide stripping. Minimizing the pH increase reduces the amount of acid required to produce a desired pH in the tank water or, with scaling feed water, reduces the rate of membrane fouling.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 1, 2004
    Inventors: Manwinder Singh, Scott Lenhardt
  • Publication number: 20040113293
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: October 15, 2003
    Publication date: June 17, 2004
    Inventors: Hamid R. Rabie, Pierre Lucien Cote, Manwinder Singh, Arnold Janson
  • Publication number: 20040112831
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: October 8, 2003
    Publication date: June 17, 2004
    Inventors: Hamid R. Rabie, Pierre Lucien Cote, Manwinder Singh, Arnold Janson, Steven Kristian Pedersen, Henry Behmann
  • Patent number: 6706189
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: March 16, 2004
    Assignee: Zenon Environmental Inc.
    Inventors: Hamid Rabie, Pierre Côté, Manwinder Singh, Arnold Janson
  • Publication number: 20040007527
    Abstract: An element for use in ultrafiltration or microfiltration of potable water has a large number of small diameter hollow fibre membranes attached between two headers. Side plates attached to the sides of the headers define vertical flow channels containing the membranes. The elements may be placed side by side and stacked on top of each other to form cassettes having continuous vertical flow channels through the entire cassette. The membrane modules or cassettes may be arranged to cover a substantial part of the cross sectional area of an open tank. Tank water may flow upwards or downwards through the flow channels. A tank may be deconcentrated by at least partially emptying and refilling the tank with fresh water while permeation continues. Excess tank water created during deconcentration may flow generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank.
    Type: Application
    Filed: May 19, 2003
    Publication date: January 15, 2004
    Applicant: Zenon Environmental Inc.
    Inventors: Steven Kristian Pedersen, Pierre Lucien Cote, Arnold Janson, Hidayat Husain, Manwinder Singh, Nicholas Adams, Jason Cadera
  • Publication number: 20030127389
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 10, 2003
    Inventors: Hamid Rabie, Pierre Cote, Manwinder Singh, Arnold Janson
  • Patent number: 6550747
    Abstract: An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate of air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: April 22, 2003
    Assignee: Zenon Environmental Inc.
    Inventors: Hamid Rabie, Pierre Côté, Manwinder Singh, Arnold Janson
  • Publication number: 20020170863
    Abstract: Carbon dioxide, liberated by introducing fouling inhibiting bubbles into a tank containing an immersed membrane module, is captured and returned to the tank by way of the bubbles to minimize increases in pH in the tank water caused by carbon dioxide stripping. Minimizing the pH increase reduces the amount of acid required to produce a desired pH in the tank water or, with scaling feed water, reduces the rate of membrane fouling.
    Type: Application
    Filed: March 8, 2002
    Publication date: November 21, 2002
    Inventors: Manwinder Singh, Scott Lenhardt