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    • 5. 发明授权
    • Highly permeable composite reverse osmosis membrane, method of producing
the same
    • 高透性复合反渗透膜,其生产方法
    • US5843351A
    • 1998-12-01
    • US702383
    • 1996-08-14
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • B01D61/02B01D67/00B01D69/00B01D69/12B29D33/48
    • B01D67/0088B01D61/022B01D69/00B01D69/12B01D69/125
    • This invention provides a composite reverse osmosis membrane having a polyamide type skin layer whose average surface roughness is at least 55 nm, and the polyamide type skin layer comprises the reaction product of a compound having amino groups and polyfunctional acid halide compound having acid halide groups. The composite reverse osmosis membrane of this invention is superior in salt rejection and water permeability. A polymer film is formed on a supporting film by contacting a solution containing e.g., m-phenylenediamine with a porous polysulfone supporting film so as to form a layer of the solution on the supporting film, then contacting the film with a solution of trimesic acid chloride and holding the film in a hot air dryer so that a polymer film is formed on the supporting film. The surface of the polyamide type skin layer can also be treated with quaternary ammonium salt and coated with a crosslinked layer of an organic polymer having positively-charged groups. Raw liquid is transmitted from a raw liquid tank to a membrane module for the first stage through a first transmission pump, and the first stage of reverse osmosis treatment is carried out. The composite reverse osmosis membrane coated with the crosslinked layer is used when another reverse osmosis treatment is carried out by using another membrane module for the second stage.
    • 本发明提供一种具有平均表面粗糙度为55nm以上的聚酰胺型表层的复合反渗透膜,聚酰胺型表皮层包含具有氨基的化合物与具有酰卤基的多官能酰卤化合物的反应产物。 本发明的复合反渗透膜的耐盐析性和透水性优异。 通过使含有例如间苯二胺的溶液与多孔聚砜负载膜接触,在支持膜上形成聚合物膜,以在支撑膜上形成溶液层,然后将该膜与均苯三甲酸 并将膜保持在热空气干燥器中,使得在支撑膜上形成聚合物膜。 聚酰胺型表皮层的表面也可以用季铵盐处理,并涂布有具有带正电荷基团的有机聚合物的交联层。 原料液体通过第一传动泵从原液槽传送到第一级的膜组件,并进行第一阶段的反渗透处理。 当通过使用用于第二阶段的另一个膜组件进行另一个反渗透处理时,使用涂覆有交联层的复合反渗透膜。
    • 7. 发明授权
    • Highly permeable composite reverse osmosis membrane, method of producing
the same, and method of using the same
    • 高透性复合反渗透膜及其制造方法及其使用方法
    • US5614099A
    • 1997-03-25
    • US572900
    • 1995-12-18
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • B01D61/02B01D67/00B01D69/00B01D69/12B01D61/00
    • B01D67/0088B01D61/022B01D69/00B01D69/12B01D69/125
    • This invention provides a composite reverse osmosis membrane having a polyamide type skin layer whose average surface roughness is at least 55 nm, and the polyamide type skin layer comprises the reaction product of a compound having amino groups and polyfunctional acid halide compound having acid halide groups. The composite reverse osmosis membrane of this invention is superior in salt rejection and water permeability. A polymer film is formed on a supporting film by contacting a solution containing e.g., m-phenylenediamine with a porous polysulfone supporting film so as to form a layer of the solution on the supporting film, then contacting the film with a solution of trimesic acid chloride and holding the film in a hot air dryer so that a polymer film is formed on the supporting film. The surface of the polyamide type skin layer can also be treated with quaternary ammonium salt and coated with a crosslinked layer of an organic polymer having positively-charged groups. Raw liquid is transmitted from a raw liquid tank to a membrane module for the first stage through a first transmission pump, and the first stage of reverse osmosis treatment is carried out. The composite reverse osmosis membrane coated with the crosslinked layer is used when another reverse osmosis treatment is carried out by using another membrane module for the second stage.
    • 本发明提供一种具有平均表面粗糙度为55nm以上的聚酰胺型表层的复合反渗透膜,聚酰胺型表皮层包含具有氨基的化合物与具有酰卤基的多官能酰卤化合物的反应产物。 本发明的复合反渗透膜的耐盐析性和透水性优异。 通过使含有例如间苯二胺的溶液与多孔聚砜负载膜接触,在支撑膜上形成聚合物膜,以在支撑膜上形成溶液层,然后将该膜与均苯三甲酸 并将膜保持在热空气干燥器中,使得在支撑膜上形成聚合物膜。 聚酰胺型表皮层的表面也可以用季铵盐处理,并涂布有具有带正电荷基团的有机聚合物的交联层。 原料液体通过第一传动泵从原液槽传送到第一级的膜组件,并进行第一阶段的反渗透处理。 当通过使用用于第二阶段的另一个膜组件进行另一个反渗透处理时,使用涂覆有交联层的复合反渗透膜。