Patents Assigned to FKC Co., Ltd.
  • Sludge dewatering and pasteurization process
    Patent number: 6673247
    Abstract: A process for dewatering and reducing pathogens in liquid waste sludge having a liquid component and a sludge solids component. Alkaline material is added to the liquid waste sludge. Flocculent may then be mixed with the liquid waste sludge. The liquid waste sludge is then fed into a screw press having a screw. The screw simultaneously heats and dewaters the liquid waste sludge for a sufficient period of time and at a predetermined temperature for the sludge solids component from the screw press to be pasteurized. An apparatus is also provided for carrying out the process for dewatering and reducing pathogens in liquid waste sludge.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: January 6, 2004
    Assignee: FKC Co., Ltd.
    Inventor: Roger J. Olson
  • Sludge dewatering and pasteurization system and method
    Publication number: 20020043505
    Abstract: A process for dewatering and reducing pathogens in liquid waste sludge having a liquid component and a sludge solids component. Alkaline material is added to the liquid waste sludge. Flocculent may then be mixed with the liquid waste sludge. The liquid waste sludge is then fed into a screw press having a screw. The screw simultaneously heats and dewaters the liquid waste sludge for a sufficient period of time and at a predetermined temperature for the sludge solids component from the screw press to be pasteurized. An apparatus is also provided for carrying out the process for dewatering and reducing pathogens in liquid waste sludge.
    Type: Application
    Filed: August 3, 2001
    Publication date: April 18, 2002
    Applicant: FKC Co., Ltd.
    Inventor: Roger J. Olson