Abstract: The present invention relates to a device for tangential filtration of a fluid to be treated and to be separated into a filtrate and a retentate, comprising at least one filtration element which comprises at least one inlet for a fluid to be filtered and at least one outlet for the retentate having circulated the filtration element, wherein said element is incorporated in a circulation loop so that at least a part of the retentate is reinjected into the fluid to be treated before being introduced into the filtration element. a module of filtration into which the circulation loop is integrated and realized by a series of filtration elements in forward direction and a series of filtration elements in backward direction, forming forward and backward circuits.

Abstract: The invention concerns a device for tangential filtering of a fluid to be treated, comprising in a housing (2): a separating part (15) mounted in the first communicating chamber (11), in sealed contact with the neighboring positioning plate (4), to divide said chamber into first (V1) and second (V2) volumes externally and internally delimited by the separating part and communicating with said two-way circuit, comprising a communication passage (24) between the first volume (V1) and the second volume (V2), internally equipped with a turbine (23) of a circulating pump, provided with a driving shaft (25) extending outside the first chamber (11) to be connected to a driving motor (26), and a closure housing (13) mounted sealed on a neighboring positioning plate (4), delimiting the first communicating chamber (11) and sealingly traversed by the turbine (23) driving shaft (25).