Abstract: A filter press, a pressing method and a pressing plant for treating sludge and separating a liquid fraction from a solid mass includes a filtration column having a loading/pressing module for the sludge, fixed and extending vertically, the loading/pressing module including a cylindrical outer shell, a perforated collector tube positioned inside the outer shell and disposed vertically, an impermeable membrane deformable under pressure and disposed between the outer shell and the perforated collector tube, and a pressing chamber defined by that surface of the membrane facing the perforated collector tube, wherein a filter is provided inside the pressing chamber about the outer wall of the collector tube, said the membrane is deformable by the inner wall of the outer shell towards the filter. and a shutter is provided in the bottom of the pressing chamber.

Abstract: The present invention relates to a press for fruit and vegetable products including at least one column that includes a feed element and several pressing stages. Each stage of pressing includes an essentially cylindrical outer shell which is internally associated with a pressure-deformable impermeable membrane which lines a respective pressing chamber in each stage. At least one perforated collector tube is positioned along the column inside each pressing chamber and coaxially to each outer shell.