Luwa Ag

Hanns Mende

Helmut Beuler

Rolf Glaum

Decontaminating a liquid--such as a liquid containing radioactive materials--by evaporation, includes the steps of guiding the vapor through plurality of wash liquid baths and guiding the wash liquid through the individual baths substantially in a countercurrent to the vapor. The step of guiding the wash liquid comprises the steps of introducing the wash liquid into each bath along an outer edge zone thereof; guiding the wash liquid in each bath radially inwardly towards a centrally located outlet in each bath; and guiding the wash liquid through the central outlet. The step of guiding the vapor comprises the steps of passing the vapor through the wash liquid in a central zone of each bath and subsequently deflecting the vapor above each bath in a radially outwardly oriented direction.

Method and apparatus for the decontamination of a liquid containing

A method of and apparatus for the purification of a liquid contaminated with radioactive substances, wherein the liquid is infed to an evaporator in or with which there is connected a column having a multiplicity of superposed plates or floors. The vapor generated in the evaporator is guided through a washing or scrubbing liquid uniformly distributed at the floors and flowing in crosswise counterflow with regard to the vapor. The washing liquid at the floors is deflected a number of times in such a manner that the washing liquid itself and together with the droplets entrained by the vapor is uniformly admixed and the washing liquid subjected to a constant intake of the radioactive substance.

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Bad Nauheim, Germany

Hanns Mende