Patents Assigned to Argiles & Minereaux
  • Process for biological denitrification of waters
    Patent number: 4253966
    Abstract: Water is denitrified by passage through a porous bed of fired clay containing 1-5 parts per thousand of Mo, preferably added to the clay before firing in the form of Mo containing acid or an alkaline salt of such acid.
    Type: Grant
    Filed: August 1, 1979
    Date of Patent: March 3, 1981
    Assignees: Omnium d'Assainissement, Argiles & Minereaux
    Inventors: Yves Lebesgue, Frederic Miglioretti