Patents Assigned to Water Re-Use Promotion Center
  • Method of treating waste liquid from production plant for hydrocarbons or oxygen-containing compounds
    Patent number: 7641797
    Abstract: A method for treating a formaldehyde-containing waste liquid, which is formed as a byproduct in a plant for the production of hydrocarbons or oxygen-containing compounds, containing the steps of: subjecting formaldehyde in the liquid to chemical treatment; and treating the resulting waste liquid, while being aerated, by using a membrane bioreactor that is composed of a microorganism or enzyme and a separation membrane.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: January 5, 2010
    Assignees: Toyo Engineering Corporation, Water Re-Use Promotion Center
    Inventors: Hiroaki Ikebe, Masayuki Uchida, Hitoshi Betchaku
  • Method of treating at a high-temperature waste liquid from production plant for hydrocarbons or oxygen-containing compounds
    Patent number: 7635432
    Abstract: A method of treating organic matter-containing waste liquid, which is formed as a byproduct in a plant for the production of oxygen-containing compounds or liquid hydrocarbons (including liquid fuel oil and chemicals, which are produced from natural gas through a synthetic gas), having the step of: treating the waste liquid at a high temperature of 40° C. or higher, while being aerated, by using a membrane bioreactor (2) that is equipped with a separation membrane (7b).
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: December 22, 2009
    Assignees: Toyo Engineering Corporation, Water Re-Use Promotion Center, Ebara Corporation
    Inventors: Masayuki Uchida, Hiroaki Ikebe, Takaji Akiya, Toshio Tsukamoto
  • Process For Producing Ship Ballast Water, Ship Ballast Water Producing Apparatus And Use Thereof
    Publication number: 20070246424
    Abstract: A process for producing ship ballast water includes removing microorganisms from seawater by passing the seawater through a microorganism filtration membrane, and backwashing the microorganism filtration membrane to clean the microorganism filtration membrane. Microorganisms living in seawater can be removed in a manner which does not kill the microorganisms.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 25, 2007
    Applicants: MITSUBISHI RAYON CO., LTD., WATER RE-USE PROMOTION CENTER
    Inventors: Hironari Honda, Kakichi Itoh, Tatsumi Shimono, Takaji Akiya