Toray Industries, Inc.

Seiko Kantani

Yohito Ito

Hideaki Ando

Kenta Iwai

Kazunori Tomioka

Shuji Furuno

Yoshifumi Odaka

Kenji Komori

Atsushi Kitanaka

Kyoya Takemoto

Yasuharu Watanabe

A separation membrane element including a pair of separation membranes containing two separation membranes arranged so that the filtrate-side surfaces thereof are disposed in mutually opposed relation, and a plurality of resin members bonded to both of the mutually opposed filtrate-side surfaces, a peripheral edge of the pair of separation membranes being sealed.

Separation membrane element and separation membrane module

Provided is an effluent treatment method based on a membrane separation activated sludge method, the effluent treatment method being characterized in that activated sludge collected from a membrane separation activated sludge tank is observed by an optical means, image processing is performed, and effluent treatment conditions are controlled in accordance with the results thereof.

Effluent treatment method for membrane separation activated sludge, effluent treatment apparatus, and effluent treatment system management program

In a waste water treatment method using membrane separation-activated sludge, when, during filtration while supplying air using an immersion-type membrane separation unit loaded with multiple flexible membranes, the filtration differential pressure of the membranes at a set filtration flow rate exceeds a specified value Pwith respect to the filtration differential pressure Pof the initial period of operation, membrane filtration is continued with air supply stopped until the filtration differential pressure Pbecomes P&#x2265;P[kPa]. Then with the filtration flux or filtration pressure being smaller or negative compared to when filtering while supplying air, air is supplied and after the filtration differential pressure Pduring filtration reaches P&#x2264;P[kPa], filtration is returned to filtration while supplying air.

Waste water treatment method using membrane separation-activated sludge

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Shiga, Japan

Seiko Kantani