Title:
COMPOSITE SEMIPERMEABLE MEMBRANE AND SEWAGE DISPOSAL METHOD
Document Type and Number:
Japanese Patent JP2004243198
Kind Code:
A
Abstract:
To provide a composite semipermeable membrane for sewage disposal which exhibits a stable and high permeation flow rate with the lapse of time, and a method for sewage disposal using the same.
A separation functional layer composed of a reaction product of a multifunctional amine compound and a multifunctional acid halide is formed on a fine porous support membrane of the composite semipermeable membrane, and a compound having at least one aldehyde group forms a covalent bond only with the amino group on the surface of the separation functional layer.
Inventors:
INOUE GAKUJI
ISAKA HIROAKI
ISAKA HIROAKI
Application Number:
JP2003034716A
Publication Date:
September 02, 2004
Filing Date:
February 13, 2003
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B01D69/12; B01D61/16; B01D61/58; B01D67/00; B01D71/56; B01D71/82; C02F1/44; (IPC1-7): B01D69/12; B01D61/16; B01D61/58; B01D67/00; B01D71/56; B01D71/82; C02F1/44