NIRE-170-1-6
4
3.0 micron
Fig. I-6 Membrane Surface
(photo)
Fig. I-7 Pore Size Distribution
(2) Membrane Structure
The flat sheet membrane consists of PVDF (Polyvinylidene Fluoride) functional layer and the
base layer of PET (polyester) non-woven fabric. This structure gives the membrane superior
physical strength and high chemical resistance.
(3) Membrane Pore Size
Numerous small-size pores are distributed evenly over the membrane surface with a sharp
pore-size distribution. This structure gives an outstanding high treated water quality and
excellent water permeability, making the membrane highly resistant to clogging (see Fig.I-6
and Fig.I-7) compared to other membranes. The average pore size is 0.08 micron meter.
Pore size (micron)
東レ
BF014
クボタ
0
0.5
1.0
1.5
0.2
0.4
0.6
0.8
0
Numbe
r o
f
p
o
re (
1
0
12
/m
2
)
0.08 micron
