Patent ID: 6168648
Filing Date: 2001-01-02
Classification: B01D

Abstract:
A running method of a spiral wound membrane element comprising a perforated hollow pipe and one or a plurality of pairs of continuous or independent permeation membranes spirally wound on the outer peripheral surface of said perforated hollow pipe while holding a first passage forming member inside and superimposing a second passage forming member outside, wherein a first passage is formed by said first passage forming member between said permeation membranes and a second passage is formed by said second passage forming member between said permeation membranes, and a side portion on the inner peripheral side and a side portion on the outer peripheral side of said first passage are sealed and both end portions of said first passage are opened while a side portion on the inner peripheral side and a side portion on the outer peripheral side of said second passage are opened and both end portions of said second passage are sealed, supplying first fluid into said first passage from one end portion of said spiral wound membrane element while deriving first fluid from another end portion of said spiral wound membrane element; and supplying second fluid into said second passage through the inner part of said perforated hollow part from at least one end portion of said perforated hollow pipe while deriving second fluid from the outer peripheral portion of said spiral wound membrane element.