HOLLOW YARN FILM ELEMENT, FRAME FOR HOLLOW YARN FILM ELEMENT, AND FILTRATION FILM DEVICE

摘要

A membrane filtration apparatus using a hollow fiber membrane has adopted the constitution in which the bundle of the hollow fiber membrane is mounted in a cartridge-shaped case and the case is engaged liquid-tightly with a manifold fixed to a frame. However, such a membrane filtration apparatus has a problem that the hollow fiber membranes having absorbed water are so heavy that they are not easily detached from the manifold. In order to solve the problem, provided is a membrane filtration apparatus adopting a constitution in which a hollow fiber membrane element 1 including a water collecting cap 20 having a water collecting port and a groove and being engaged liquid-tightly with a bundle of a hollow fiber membrane is engaged with a frame 60 having supporting beams 65 to be fitted in the grooves. It is possible to regulate the engagement and the rotation of the hollow fiber membrane element 1 merely by inserting the supporting beams 65 into the grooves formed in the water collecting cap 20.