| 摘要 |
PCT No. PCT/JP96/00744 Sec. 371 Date Aug. 21, 1997 Sec. 102(e) Date Aug. 21, 1997 PCT Filed Mar. 22, 1996 PCT Pub. No. WO96/29142 PCT Pub. Date Sep. 26, 1996The present invention relates to a method for desalinating brackish water or seawater by using a hollow fiber type reverse osmosis membrane, and an apparatus therefor, and an object thereof is to provide a novel method by which the lifetime of said reverse osmosis membrane can be prolonged and which is abundant in simplicity and economy, and an apparatus therefor. The present invention is a method for desalinating salts-containing water by using a hollow fiber type reverse osmosis membrane, which comprises using a vertically extending cylindrical reverse osmosis membrane apparatus, at the time of raw water supplying, supplying raw seawater to said reverse osmosis membrane apparatus without pretreatment, making said raw water flow from a core tube arranged along the center axis of said reverse osmosis membrane apparatus into a fiber layer of said reverse osmosis membrane apparatus through an inner circumferential space provided between said core tube and an inner circumferential surface of said fiber layer, and making said raw water flow out through an outer circumferential space provided between an outer circumferential surface of said fiber layer and an outer cylinder of said reverse osmosis membrane apparatus.
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