Fine bubble diffuser, fine bubble diffuser, and submerged membrane separator

摘要

To provide a fine bubble diffusing tube that can efficiently and uniformly generate fine bubbles even when the length of the diffusing tube is increased, and a fine bubble diffusing device and an immersion membrane separation device using the fine bubble diffusing tube And at least a cylindrical support tube 1 and an elastic sheet 2 in which fine slits are formed. The elastic sheet 2 is disposed so as to cover the outer periphery of the support tube 1, and the elastic sheet 2 and the A fine bubble diffusing tube having a function of generating fine bubbles outside the diffusing tube by opening a fine slit of the elastic sheet 2 when a gas is supplied to the gap between the supporting tube 1 and the supporting tube 1. The length L in the longitudinal direction is 1000 mm or more, and gas supply portions 4 that are gas inlets are provided at both ends of the support tube.