Patent ID: 6284135
Filing Date: 2001-09-04
Classification: B01D,C02F

Abstract:
A membrane filter apparatus comprising:(a) a treatment tank;(b) a membrane unit disposed within said treatment tank and composed of an array of membrane elements extending in an arraying direction;(c) a tubular skirt element having a first end disposed at a bottom portion of said membrane unit and a second end positioned adjacent a bottom of said tank;(d) an aerator disposed under said skirt element and adapted to discharge gas;(e) at least one partition disposed at a bottom portion of said membrane unit along the arraying direction and extending downwardly therefrom a major portion of the distance between said first end and said second end of said skirt element, said at least one partition and said skirt element defining at least two compartments within said skirt element; and(f) gas supply means for supplying gas into the at least two compartments.