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I.
Introduction
Toray PVDF Hollow Fiber Membrane Module "HFU series" is a pressurized
hollow fiber UF (Ultra Filtration) membrane module developed with polymer
science and membrane fabrication technologies accumulated over decades of
successful membrane manufacturing at Toray Industries, Inc.
The membrane material is Polyvinylidene fluoride (PVDF). The nominal pore
size of the membrane is 0.01 micron.
The module, which is permanently potted in its casing, is pressure-driven which
provides equal filtrate quality to submerged modules, while offering greater TMP
range for more flexible plant operation. Maximum operating pressure is 300 kPa
(43.5 PSI). Flow direction is outside-in, which is more suitable for higher
turbidity water treatment because of the air-scrubbing effectiveness.
Additionally, outside-in modules are able to remove suspended solids more
effectively at higher recovery rates compared to inside-out fibers.
1.
Characteristics of Toray "HFU series" Membrane Modules
(1)
High Filtration Flux
HFU series provides high filtration flux and stable operation for the filtration
of various raw water sources. The membrane is made with a special
spinning method, which enables high permeability and high fouling resistance.
(2)
Excellent Water Quality
HFU series provides very good water quality for the filtrate, extremely low
turbidity since the membrane has 0.01 micron nominal pore size. HFU
series is recommended to be applied to the tertiary treatment of sewage
water and RO pretreatment in seawater desalination.
(3)
High Mechanical Strength
The membrane of HFU series has very high mechanical strength because it
is made of PVDF with the special spinning method developed by Toray.
HFU series provides high integrity and durability under recommended
