Mitsubishi Rayon Company, Limited

Katsuyuki Yanone

Hiroyuki Okazaki

Masumi Kobayashi

Tomoki Kawagishi

Shinsuke Furuno

Shinya Sueyoshi

Satoshi Miyashita

Kenji Honjyo

Yoshihito Nakahara

Masanori Itakura

Manabu Yanou

Makoto Ideguchi

Manabu Sasakawa

Kenji Honjou

Osami Katou

Takanori Itonaga

A first fixing member which fixes to a membrane module unit a tubular member with a protrusion formed at a tip end or near the tip end for connecting a membrane module of the membrane module unit and a water collecting header to form a filtrate flow path from the membrane module to the water collecting header, the first fixing member includes: a fixing member main body which includes an engaging surface formed at a position at which the fixing member main body engages with the protrusion formed in the tubular member; and a second fixing member which fixes the fixing member main body to the membrane module unit.

Fixing member and membrane module unit

Hollow fiber element for filtration

Aeration pipe unit

A catchment header allowing a plurality of membrane modules to be connected thereto, having a tubular catchment part with a Young's modulus of 4.0 GPa or less for collecting and taking out filtrated liquid from the membrane modules, wherein at least a part of the tubular catchment part is covered with a reinforcement member with a Young's modulus of 4.0 to 250 GPa, the tubular catchment part of the catchment header is preferably formed of a synthetic resin, and the cross sectional area thereof perpendicular to the longitudinal direction of the tubular catchment part is preferably 4 to 36 cm.

Catchment header and membrane module unit

There is here disclosed a water treatment apparatus in which a membrane separation device is disposed above a gas diffuser device arranged in a treating tank, wherein diameters of gas discharge holes formed in the gas diffuser device are within a range of 1 to 10 mm, and a relational expression of 20<X/Y<300 is satisfied wherein X is a sectional area (cm ) of the membrane separation device in a horizontal direction, and Y is the number of the gas discharge holes of the gas diffuser device. According to this water treatment apparatus, the clogging of the pores in the surface of a separation membrane with a suspended substance can be inhibited, so that a stable filtration is possible for a long period of time.

Apparatus and method for treating water

An object is to provide a highly integrated hollow fiber membrane module and hollow fiber membrane module unit as filtration processing devices which are appropriate for miniaturization, and to also provide a purification tank with a hollow fiber membrane module unit installed therein. To achieve this there is provided a hollow fiber membrane module in which at least one end of a hollow fiber membrane with hollow fibers deployed in a plane is fixed with a fixing resin to a collector pipe in a fluid tight manner, constructed such that an open ended tip of the hollow fiber membrane is inserted into an aperture provided in the collector pipe, and in this condition, fixing resin is filled into the aperture and hardened, thereby securing the open ended hollow fiber membrane to the collector pipe. Also provided is a hollow fiber membrane module unit wherein a plurality of the hollow fiber membrane modules are positioned proximately, and a purification tank with the hollow fiber membrane module units installed therein.

Hollow fiber membrane module, hollow fiber membrane module unit which utilizes the module, and purification tank with the module unit installed therein

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Nagoya, Japan

Katsuyuki Yanone