Patents by Inventor Lloyd J. Parcell

Lloyd J. Parcell 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).

  • Patent number: 4668388
    Abstract: A high rate reactor for the treatment of biosludge has been designed which combines the processes of landfarming, sand bed dewatering, and forced aeration composting. The reactor is essentially a sand bed overlying a drainage system housed in an inflatable, pressurized building.The high rate reactor can effectively treat biosludge through dewatering and biodegradation. Volume reduction, stabilization, and solidification are achieved at improved rates over conventional practices. The reactor operates independent of climate and is a closed system minimizing environmental monitoring.
    Type: Grant
    Filed: November 25, 1983
    Date of Patent: May 26, 1987
    Assignee: Texaco Inc.
    Inventors: John T. Dibble, William R. Deever, Lloyd J. Parcell, Rudolph C. White
  • Patent number: 4510057
    Abstract: A method for environmentally upgrading waste water containing formates, cyanides and ammonia is disclosed. Formates and cyanides are biodegraded by aerobic bacteria immobilized on the disks of a rotating disk contactor. Ammonia is air stripped.The present method eliminates the steam stripping stage of conventional processes as well as the lime addition and precipitation stages.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: April 9, 1985
    Assignee: Texaco Inc.
    Inventors: Edward H. Rowe, Lloyd J. Parcell
  • Patent number: 4211646
    Abstract: A method is provided for the treatment of a waste water stream characterized by having toxic and corrosive properties due to the presence of a cyanides formates and a halide of a metal or ammonia comprising adding a ferrous ion to said waste water to convert the cyanides to iron cyanides, adding a base to said waste water until the pH of said waste water is adjusted to the range from about 9 to 11 to precipitate a sludge containing said iron cyanides, feeding said waste water to a biological reactor to convert said formates to carbon dioxide and a biological residue and recovering an environmentally upgraded waste water stream from said biological reactor.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 8, 1980
    Assignee: Texaco Inc.
    Inventors: Clifton W. Westbrook, Lloyd J. Parcell, Gary L. Claytor, Byron V. Klock