Cell and water recovery system

Cell recovery water obtained by molding in one piece of a plastic material, comprising: - a sidewall (2) comprising four sides (3, 4) defining a substantially parallelepipedal internal volume and in each of which they are formed holes (5); - A plurality of columns (12) extending substantially parallel to the sides of the side wall (2), each column (12) having a height substantially equal to the side wall (2) and being substantially housed in said interior volume; characterized in that the upper and lower sides of the cell (1) are open and devoid of transverse wall, and that the columns (12) are joined together and the side wall (2) by an intermediate partition (13) in which are practiced holes (18).