Patents by Inventor Andrew Benedek

Andrew Benedek 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).

  • High purity water production using ion exchange
    Patent number: 6267891
    Abstract: A method of producing high purity water using weak acid cation exchange for dealkalization and a double pass reverse osmosis membrane system having enhanced membrane life.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: July 31, 2001
    Assignee: Zenon Environmental Inc.
    Inventors: Anthony A. Tonelli, Eric Harrison, Susan Leanne Wesno, Hadi Husain, Andrew Benedek
  • High purity water production
    Patent number: 6258278
    Abstract: A method of producing high purity water using dealkalization and a double pass reverse osmosis membrane system having enhanced membrane life.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: July 10, 2001
    Assignee: Zenon Environmental, Inc.
    Inventors: Anthony A. Tonelli, Eric Harrison, Susan Leanne Wesno, Hadi Husain, Andrew Benedek
  • Process for purifying water using fine floc and microfiltration in a single tank reactor
    Patent number: 6027649
    Abstract: A system of purifying water to remove at least one of natural organic matter, color, turbidity, bacteria, cysts and oocysts, viruses, arsenic compounds and insoluble impurities. The system comprises the steps of providing a body of water to be purified; controlling the pH of the body in a range of 5 to 8; and adding a coagulant to the body to provide a floc. The floc is maintained in the body in a concentration in the range of 1 to 6, for purposes of adsorbing at least one of the natural organic matter, color, turbidity and bacteria to provide treated water. Thereafter, a first portion of the treated water and floc is removed from the body of water. A submerged semi-permeable membrane is provided in the body of water for removing a second portion of the treated water. The membrane has a pore size in the range of 0.02 to 1 .mu.m to provide a permeate comprised of purified water and to provide a retentate containing the floc.
    Type: Grant
    Filed: October 4, 1997
    Date of Patent: February 22, 2000
    Assignee: Zenon Environmental, Inc.
    Inventors: Andrew Benedek, Hadi Husain, Manwinder Singh
  • Microfiltration enhanced reverse osmosis for water treatment
    Patent number: 5501798
    Abstract: Disclosed is an improved method for extending the useful life of a reverse osmosis membrane having a high pressure side and a low pressure side, the membrane used for separating soluble and sparingly soluble inorganic materials from an aqueous solution, the process comprising introducing an aqueous solution containing the soluble and sparingly soluble inorganic materials to the high pressure side of a reverse osmosis membrane and pressurizing the aqueous solution on said high pressure side to produce liquid on the low pressure side substantially free of said inorganic materials. Solution containing concentrated inorganic materials is transformed from the high pressure side of the reverse osmosis membrane to a high pressure side of a microfiltration membrane, and soluble inorganic materials transferred to the high pressure side of the microfiltration membrane was precipitated to provide solution containing particles of the inorganic materials.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: March 26, 1996
    Assignee: Zenon Environmental, Inc.
    Inventors: Riad A. Al-Samadi, Andrew Benedek