METHOD FOR CLEANING WATER PURIFIER

摘要

A water purification cartridge capable of suppressing a running cost for purification of raw water by recovering functionally deteriorated hollow fiber membranes by cleaning, comprising a hollow fiber membrane element having a plurality of hollow fiber membranes bent in U-shape and potting material for binding both end parts of the hollow fiber membranes so as to keep the open states of the hollow fiber membrane end parts and a tubular hollow fiber membrane case surrounding the hollow fiber membranes, characterized in that the hollow fiber membrane element is detachably installed in the hollow fiber membrane case so that a fluid-tight state can be assured between the primary side and the secondary side of the hollow fiber membranes.