Abstract:
Les moyens (4) d'échange thermique eau/air sont adaptés à recevoir un courant d'eau froide circulant à l'intérieur de parois desdits moyens dont les faces extérieures sont en contact avec ledit flux d'air. Ils comprennent au moins un module (21, 22, 23, 24, 25) constitué de deux plaques métalliques (26, 27) maintenues à faible distance l'une de l'autre et reliées l'une à l'autre de manière étanche, l'eau froide circulant à l'intérieur de chaque module entre les deux plaques (26, 27), et l'air circulant à l'extérieur des plaques (26, 27).
Abstract:
The process includes the following steps: a) a predetermined volume of water is provided which has predetermined characteristics as to the content of dissolved oxygen, pH and REDOX potential; b) to said water volume is added a predetermined charge of oils and solvents contaminated by radioactive substances, said charge corresponding to a volume of oils and solvents which is a predetermined fraction of the predetermined water volume; c) said charge is subjected to the action of micro-organisms at a predetermined temperature and duration; d) at least part of the effluent obtained is taken; e) the water is separated from the materials contained in such effluent; f) the materials separated from said water are recycled or evacuated; g) the water free of materials contained in the effluent is regenerated so that it recovers said predetermined characteristics; h) at least part of said regenerated water is recycled; i) the cycle from the step a) is repeated.