Regenerable system and method for filtering microfibres from a waste liquid

A system for filtering microfibres contained in a liquid effluent from a textile treatment device, the system being intended to be connected to a drain pipe of the textile treatment device, the system comprising at least:

• an enclosure comprising a granular medium occupying a portion of the space of the enclosure, the granular medium being arranged on a support so as to leave a free volume in the enclosure above the granular medium, the support being permeable to at least the liquid effluent,
• means allowing passage by percolation of the liquid effluent through the granular medium, comprising at least one opening provided in the enclosure and arranged above the granular medium,
• wherein the granular medium is configured to retain at least a part of microfibres contained in the liquid effluent percolating therethrough,
• means for discharging the liquid effluent, comprising at least one opening provided in the enclosure and arranged under the support of the granular medium, and
• means for connection to means for regeneration by fluidization of the granular medium, comprising at least one opening provided in the enclosure and arranged above the granular medium, the means for regeneration by fluidization comprising means for gas suction.