Abstract: The purpose of the present invention is to provide: a membrane distillation module with excellent stability of water treatment ability over time as a result of wetting being controlled; and a membrane distillation apparatus comprising the same. Provided is a membrane distillation module that comprises a housing and multiple porous hollow fiber membranes, both ends of which are bonded and fixed to the housing, wherein: the water contact angle of the outer surfaces of the porous hollow fiber membranes is at least 90°; and a hydrophobic polymer adheres to at least some of the areas of the porous hollow fiber membranes that are not bonded and fixed.

Abstract: The purpose of the present invention is to provide: a membrane distillation module with excellent stability of water treatment ability over time as a result of wetting being controlled; and a membrane distillation apparatus comprising the same. Provided is a membrane distillation module that comprises a housing and multiple porous hollow fiber membranes, both ends of which are bonded and fixed to the housing, wherein: the water contact angle of the outer surfaces of the porous hollow fiber membranes is at least 90°; and a hydrophobic polymer adheres to at least some of the areas of the porous hollow fiber membranes that are not bonded and fixed.

Abstract: The present invention offers a forward osmosis composite hollow fiber membrane module having hollow fiber bundles comprising a plurality of hollow fibers, the hollow fibers having a separation layer composed of a macromolecular polymer thin film provided on the inner surface of a microporous hollow fiber supporting membrane, wherein the membrane area of the hollow fiber bundle is at least 1 m2, and a variation coefficient for the average thickness of the separation layer in the radial direction and the lengthwise direction of the hollow fiber bundles, as calculated by a method of measuring the mass of the separation layer portion in a scanning electron microscope image of a cross section of the separation layer in the thickness direction, is 0% to 60%.

Abstract: The present invention offers a forward osmosis composite hollow fiber membrane module having hollow fiber bundles comprising a plurality of hollow fibers, the hollow fibers having a separation layer composed of a macromolecular polymer thin film provided on the inner surface of a microporous hollow fiber supporting membrane, wherein the membrane area of the hollow fiber bundle is at least 1 m2, and a variation coefficient for the average thickness of the separation layer in the radial direction and the lengthwise direction of the hollow fiber bundles, as calculated by a method of measuring the mass of the separation layer portion in a scanning electron microscope image of a cross section of the separation layer in the thickness direction, is 0% to 60%.