초록 ▼

A spiral wound type membrane element is formed by superposing gas-liquid contact membranes on both surfaces of a first fluid passage forming member, superposing a second fluid passage forming member on the surface of one of the gas-liquid contact membranes and spirally winding the gas-liquid contact

A spiral wound type membrane element is formed by superposing gas-liquid contact membranes on both surfaces of a first fluid passage forming member, superposing a second fluid passage forming member on the surface of one of the gas-liquid contact membranes and spirally winding the gas-liquid contact membranes around a second fluid supply pipe along with the first fluid passage forming member and the second fluid passage forming member. A side portion on the inner peripheral side and a side portion on the outer peripheral side of a first fluid passage formed by the first fluid passage forming member between the gas-liquid contact membranes are sealed. Both end portions of a second fluid passage formed by the second fluid passage forming member between the gas-liquid contact membranes are sealed. The spiral wound type membrane element is stored inside a cylindrical container. The gas-liquid contact membranes are formed by PTFE (polytetrafluoroethylene) porous membranes having hydrophobicity. First fluid is supplied from a first fluid inlet of the cylindrical container, passes through the first fluid passage of the spiral wound type membrane element and is taken outward from a first fluid outlet of the cylindrical container. Second fluid is supplied into the second fluid supply pipe from a second fluid inlet of the cylindrical container, passes through the second fluid passage of the spiral wound type membrane element and is taken outward from a second fluid outlet of the cylindrical container.

대표청구항 ▼

[ What is claimed is:] [1.] 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 pa

[ What is claimed is:] [1.] 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; andsupplying 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.