| 摘要 |
<p>A method of cleaning a filter (10) made of hollow fibers having a pore size in the range 5 micron to 0.01 micron utilizes a gas back-wash. Feedstock to the filter is applied to the outside of the fibers and permeate (11) is drawn off through the fibre lumens. The gaseous back-wash medium (13) is introduced into the fibre lumens. The gas is applied at a pressure sufficient to overcome the effects of the surface tension of the continuous phase of the feedstock within the pores of the membrane.</p> |
