| 摘要 |
<p>The treatment consists: - in screening (2) the contaminated salt (1) so as to remove the gross fraction of the organic waste; - in placing, after this first screening, the undersized fraction (4) in a vessel (5) and in introducing into the said vessel a quantity of water saturated with clean salt (6) of the same chemical nature as the contaminated salt and called a brine; - in causing a first washing by stirring of or in the vessel (5) so that the brine becomes laden with the organic matter which remained adhering to the contaminated salt; - in removing the contaminated brine (7) and conveying it into a separation vessel (8), where the brine is regenerated by a flocculation operation; - in causing a second washing, identical with the first, of the salt remaining in the vessel after the first washing; - in placing the completely washed salt on a drainer (12) or screen of approximately 0.5 mm to 1 mm. <IMAGE></p> |
