Membrane element regeneration method and membrane module

Abstract

This invention provides a method for regenerating membrane elements and a membrane module using the obtained regenerated membrane element. It does not require altering the structure of the membrane element to be regenerated, reduces waste generated from used membrane elements, saves import resources, and restores separation function. This invention is a method for regenerating membrane elements using a portion of a used membrane element. The method includes the following steps: cutting off at least two side seals of the used membrane element; unfolding the cut membrane leaf and cutting off at least the outer peripheral seal of the membrane leaf; replacing at least the separation membrane of the unfolded and cut membrane leaf with a new separation membrane; and forming side seals and an outer peripheral seal to seal the two side ends and the outer peripheral end of the replaced membrane leaf in the axial direction, thereby obtaining a regenerated membrane element.

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