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    • 69. 发明专利
    • TREATMENT OF AQUEOUS SUGAR SOLUTION USING REVERSE OSMOSIS MEMBRANE MODULE
    • JPH05329335A
    • 1993-12-14
    • JP16401992
    • 1992-05-30
    • NITTO DENKO CORP
    • SASAKI TAKESHI
    • B01D61/02C07H1/06C13K13/00
    • PURPOSE:To separate and purify a sugar solution by a method wherein reverse osmosis membrane modules are allowed to respectively communicate with the outlets of a transmitted solution tank and a concentrate tank and the transmitted solution outlets of the modules are allowed to communicate with the transmitted solution tank and the concentrate outlets of the modules are allowed to communicate with the concentrate tank and a solution to be treated is charged in both tanks. CONSTITUTION:Reverse osmosis membrane modules 2a, 2b are provided to a concentrate tank 1a and a transmitted solution tank 1b and the solution outlets of the tanks 1a, 1b are allowed to communicate with the inlets of the respective reverse osmosis membrane modules 2a,2b. The non-transmitted solution outlets of the modules 2a, 2b are allowed to communicate with the concentrate tank 1a and the transmitted solution outlets of the modules 2a, 2b are allowed to communicate with the transmitted solution tank 1b. A solution to be treated is charged in the respective tanks 1a, 1b by the almost same amount and subjected to separation treatment according to a batchwise method by driving pumps 3a, 3b. By this method the solute of a sugar solution is roughly separated into monosaccharide, oligosaccharide and polysaccharide with significant difference sufficiently near to a real rejective ratio.