| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure which is capable of reducing flow resistance of permeate and back washing liquid, is excellent in back washing performance and, moreover, is excellent in productivity in an inner pressure type hollow fiber liquid separation membrane module. SOLUTION: In the inner pressure type hollow fiber liquid separation membrane module, a housing inner diameter is changed in the housing length direction, the housing inner diameter near a permeate outlet is thickened, thereby, a gap between a hollow fiber membrane bundle and the housing near the permeate outlet is enlarged without reducing a packing amount of hollow fiber membranes and a flow path cross-section of the permeate and back washing liquid is enlarged. COPYRIGHT: (C)2008,JPO&INPIT
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