| 摘要 |
PURPOSE:To make it possible to rapidly obtain a strong separation element, by providing a shrinkable film to the outer periphery of the separation element for separating gas, a liquid or a solid. CONSTITUTION:A raw liquid is sent into a cylindrical container 1 from a supply pipe under pressure higher than the osmotic pressure of a component to be separated to fill the space part 12 of said container 1 and flowed into a reverse osmosis membrane element 4 from the outer peripheral matrix line of said element 4 to the direction crossing said matrix line at right angles or from the opposite side surface of a seal part 7 to the direction parallel to a central pipe 8. The element 4 is constituted by attaching two reverse osmosis membranes 13, 13' to the central pipe 8 having a small orifice 9 at the center thereof in a state adhered at one ends thereof and has a shrinkable tube or sheet 11 provided to the outer periphery thereof while a membrane protective sheet 18 provided to the inside thereof. Because this sheet 11 is attached thereto by shrinking the same within a short time, the whole production process is simplified. Especially, a resin impregnating method as performed in a conventional method can be omitted.
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