A method of treating water using an apparatus for withdrawing permeate from a substrate, a process for withdrawing filtered permeate from activated sludge at ambient pressure, and a process for withdrawing filtered permeate from a substrate

摘要

appearance in any module header unconstrained end is planted on both sides, "fiber" in the vertical bundle is aerated by a gas distribution means for generating air bubbles in the mass of the wiping function to rub the outer surface of the fiber. The membrane device is the flow rate through the membrane is relatively constant at a high value is reached because the bubbles disposed along the outer surface of the fiber perpendicular to the fiber to rise to the top and see a large effect in a relatively small amount of cleaning gas allows. Moreover, air bubbles flowing along the outer surface of the fiber is slightly longer than the straight line distance to the center to center between two header facing the length of each fiber, preferably at least 0.1% - about 5% longer satisfy the condition If can be prevented by the deposits of inanimate particles or microorganisms in the fiber substrate from being contaminated. When used in a relatively large vessel, to use a bank of bundles with gas distribution means; The length of the fibers of each bundle is 0.5 m long, than the total surface area is greater than 10 . Distal end of the fiber in the novel keeps each header does not have fiber and fiber in contact with a new way to plant fiber.