Patents by Inventor Alwin Eppler

Alwin Eppler 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: 4970000
    Abstract: The biological denitrification of water is improved in a decisive manner by reducing on the one hand the oxygen content of the water prior to passing it through the denitrification state and, on the other hand, by bringing the water into contact with the denitrification bacteria in a fluidized bed formed by sand the grains of which have been populated intentionally with denitrification bacteria of the species "pseudomonas fluorescens". Accordingly, the apparatus for carrying out the method comprises a stage (51) for eliminating oxygen preceding the denitrification reactor (52). If this stage is designed as a degassing stage, the reactor (52) is followed, advantageously, by a decarbonization stage (81).
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: November 13, 1990
    Inventors: Dieter Eppler, Alwin Eppler