A filter press comprising: - a plurality of filtration chambers aligned along a predetermined longitudinal direction, each of which is delimited by two mutually facing filtering septa (140, 145) interposed between a pair of containment plates, - a movement apparatus adapted to move each pair of containment plates along said longitudinal direction, between a closed configuration, in which the containment plates are clamped into a pack on the respective filtering septa (140, 145) closing the filtration chamber, and an open configuration, in which the containment plates are spaced apart so as to separate the respective filtering septa (140, 145) laterally opening the filtration chamber, - an inlet hydraulic circuit adapted to feed a liquid to be filtered inside each filtration chamber, when all the pairs of containment plates are in the closed configuration, - an outlet hydraulic circuit adapted to discharge the filtered liquid leaving each filtration chamber through the respective filtering septa (140, 145), when all the pairs of containment plates are in the closed configuration, and - a washing robot adapted to wash the filtering septa (140, 145) that delimit each filtration chamber, when the respective pair of containment plates is in the open configuration, wherein said washing robot comprises: - a trolley adapted to move along said longitudinal direction with respect to the containment plates, - a bar installed on the trolley and movable relative thereto in a transverse direction with respect to the longitudinal direction, in order to slide between the filtering septa (140, 145) interposed between the pair of containment plates in the open configuration, and - a plurality of nozzles installed on said bar to dispense jets of a washing liquid toward said filtering septa (140, 145), characterized in that it further comprises: - a plurality of identification codes, each of which is fixed to at least one respective filtering septum (140, 145), - a device for detecting said identification codes installed on the trolley of the washing robot, - at least one image acquisition device installed on the bar of the washing robot to acquire images of said filtering septa (140, 145), and - an electronic processing unit connected to the identification code detection device and to the image acquisition device. - a plurality of filtration chambers aligned along a predetermined longitudinal direction, each of which is delimited by two mutually facing filtering septa (140, 145) interposed between a pair of containment plates, - a movement apparatus adapted to move each pair of containment plates along said longitudinal direction, between a closed configuration, in which the containment plates are clamped into a pack on the respective filtering septa (140, 145) closing the filtration chamber, and an open configuration, in which the containment plates are spaced apart so as to separate the respective filtering septa (140, 145) laterally opening the filtration chamber, - an inlet hydraulic circuit adapted to feed a liquid to be filtered inside each filtration chamber, when all the pairs of containment plates are in the closed configuration, - an outlet hydraulic circuit adapted to discharge the filtered liquid leaving each filtration chamber through the respective filtering septa (140, 145), when all the pairs of containment plates are in the closed configuration, and - a washing robot adapted to wash the filtering septa (140, 145) that delimit each filtration chamber, when the respective pair of containment plates is in the open configuration, - a trolley adapted to move along said longitudinal direction with respect to the containment plates, - a bar installed on the trolley and movable relative thereto in a transverse direction with respect to the longitudinal direction, in order to slide between the filtering septa (140, 145) interposed between the pair of containment plates in the open configuration, and - a plurality of nozzles installed on said bar to dispense jets of a washing liquid toward said filtering septa (140, 145), - a plurality of identification codes, each of which is fixed to at least one respective filtering septum (140, 145), - a device for detecting said identification codes installed on the trolley of the washing robot, - at least one image acquisition device installed on the bar of the washing robot to acquire images of said filtering septa (140, 145), and - an electronic processing unit connected to the identification code detection device and to the image acquisition device.