Patents Assigned to Deutsche Gold- und Silber-Scheideanstalt vormals Koessler
  • Process for detoxification of formaldehyde containing waste waters
    Patent number: 4104162
    Abstract: Formaldehyde containing waste water is detoxified by treating the waste water with hydrogen peroxide in the presence of alkali at an initial temperature of 10.degree.-35.degree. C. In an alternative and preferred form of the invention the waste water is heated to a temperature of at least 50.degree. C and then 10-35% of the hydrogen peroxide equivalent to the formaldehyde is added.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: August 1, 1978
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Koessler
    Inventors: Helmut Junkermann, Heinrich Schwab