Water filtration module incorporating hollow-fiber filtration elements

A hollow-fiber water filtration module, comprising:

• a casing having a longitudinal axis;
• a plurality of water filtration elements independent from one another, assembled removably in said casing to extend along said longitudinal axis, each of the plurality of water filtration elements comprising:
• a plurality of longitudinal hollow fibers configured to enable a filtration of water from an outside towards an inside of the plurality of longitudinal hollow fibers, the plurality of longitudinal hollow fibers forming a bundle of fibers extending along the longitudinal axis and having an upper end portion and an opposite lower end portion;
• and
• wherein the upper end portion of the plurality of longitudinal hollow fibers is included in a first rigid coating block, the first rigid coating block not closing the plurality of longitudinal hollow fibers in the upper end portion;
• an upper permeate collection chamber in hydraulic communication with the plurality of longitudinal hollow fibers of all of the plurality of the water filtration elements;
• wherein in each of the plurality of water filtration elements:
• the lower end portion of the plurality of longitudinal hollow fibers is included in a second rigid coating block, the second rigid coating block not closing the plurality of longitudinal hollow fibers in the lower end portion;
• and
• a longitudinal hollow tube, called a central tube, is arranged in a center of the bundle of fibers to extend at least over an entire height of the bundle of fibers and to open on either side of the first coating block and of the second coating block;
• and
• wherein each water filtration element comprises a cap fluid-tightly attached around the second coating block, the cap being arranged to provide, between same and the second coating block, a chamber in hydraulic communication with the plurality of longitudinal hollow fibers and with the central tube;
• and
• wherein the central tubes of each of the plurality of water filtration elements are in hydraulic communication with the upper permeate collection chamber at the upper portion of the plurality of longitudinal hollow fibers.