Mitsubishi Rayon Develops Water Treatment PVDF Film

Mitsubishi Rayon has developed a hollow fiber MF (Precision Filtration) membrane unit made of PVDF (polyfluorinated vinylidene fluoride) that can handle a large amount of down-drainage. Its water permeability is three times higher than the permeability of the MF membrane made of PE made of PE, which is currently used at home and abroad. , You can use ozone or oxidants such as sodium hypochlorite to repeatedly wash, plus the diameter of each hollow fiber than the thick 4 to 5 times the PE, the strength increased 60 times.
Under the drainage treatment in the United States and Europe have been moving to the membrane treatment method, but Japan is almost a precipitation filter method, the membrane treatment method does not require sedimentation tank, so the installation area can be reduced, while impurities and fungi can be efficiently separated. Since 1998, Japan began to study the membrane separation activated sludge process, which requires a durable, high-strength, repetitive washable, chemical-resistant membrane material under a large number of drainage treatments. The company therefore introduced the PVDF system. Hollow silk MF membrane can be used in large facilities.

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