Patents by Inventor Volkmar J. Bohmer

Volkmar J. Bohmer 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).

  • Elimination of bleach effluents
    Patent number: 5127992
    Abstract: A process is provided for the treatment of an acidic aqueous effluent derived from a chlorine or chlorine compound bleaching process. The acidic effluent is reacted with a neutralizing base selected from carbonates, hydroxides and oxides of Al, Cr, Co, Fe, Mg, Mn, and Ni. The neutralized effluent is concentrated and residual base and HCl are subsequently recovered. The concentration of neutralized effluent may be accomplished by passing the neutralized effluent through the cooling tower of the pulp mill.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: July 7, 1992
    Assignee: Sappi Limited
    Inventors: Christopher J. Davies, Volkmar J. Bohmer, Michael D. Birkett