Abstract: The present invention relates to the technical field of treating urban and industrial saline sludges in general and more specifically the “conditioning” thereof before it is removed through the appropriate channels. The drying composition of the invention makes it possible to easily transport and store saline sludges, namely all sludges comprising even small quantities of salts made up of inorganic anions, in particular chlorides, and cations such as sodium, potassium, calcium and magnesium. Said drying composition is characterized in that it comprises: —at least 50% and up to 99% by weight of a superabsorbent polymer—and from 1% to 99% by weight of a flocculant polymer. It makes it possible to dry saline sludges by significantly reducing the quantity of superabsorbent required to achieve said outcome. The invention also relates to the use of the composition for conditioning saline sludges.

Abstract: The absorption device includes a hydrophilic powder and a casing which is permeable to a liquid, the casing being composed of an upper layer which is superimposed on a lower layer, the lower and upper layers being connected to each other by strong connections which delimit a confinement zone for the hydrophilic powder in the casing. Advantageously, the lower and upper layers are connected to each other by first weak connections. The first weak connections delimit a plurality of adjacent cells in the confinement zone, each cell enclosing a quantity of hydrophilic powder sufficient to bring about the breakage of the first weak connections which delimit the cell when the hydrophilic powder absorbs a liquid.