| 摘要 |
A method and relative plant (10) for treating sludge contaminated by pollutant substances and in which the aqueous means consists in particular of sea water, brackish water, industrial water, oil extraction water, or other water with a high saline and/or ionic content, comprises a first step a) in which a pre-treatment of the sludge is performed by means of pre-treatment means (11) and a second step b) in which a treatment of the sludge pre-treated in said step a) is performed by means of treatment means (12). The treatment comprises a foam-free floatation treatment of the sludge pre-treated in the first step a), so as to obtain a head floatate, rich in pollutants, and a tail floatate, poor in pollutants. The foam-free floatation treatment comprises at least two floatation passes of a different type from each other, of which at least one floatation pass is of the type with a neumatic floatation. |
