Stainless Steel Purifying Reverse Osmosis Machine Ro Water Purifier
For Industry
Effective membrane area:
Pure water and ultrapure water industry use reverse osmosis
membranes almost all of which are roll-type membranes. The membrane
is spirally
wound on the central tube, and the influent water enters from the
end face of the rolled membrane (the direction of water flow is
parallel to the
membrane surface). The pure water that has passed through the
membrane is collected and discharged from the central tube, and the
trapped
impurities are discharged with the concentrated water (the influent
water is gradually concentrated to become concentrated water
through the
surface of the membrane). The amount of water produced by the
reverse osmosis membrane is proportional to the membrane area. The
larger
the membrane area, the larger the water production. When the
reverse osmosis membrane is rolled, it is formed into a film bag,
and the edge of
the film bag is not provided with water-making ability, and the
effective film area must be removed from the bonding area.
Desalination rate:
The percentage of the concentration of soluble impurities removed
from the influent water by the reverse osmosis membrane is an
important
technical indicator for measuring the quality of the reverse
osmosis membrane. The higher the desalination rate, the better.
Desalination rate
calculation formula: Desalination rate = (1 - salt content of water
production / salt content of influent water) × 100%. The salt
rejection of the
membrane element has been determined at the time of its production
and formation. The degree of salt rejection depends on the density
of the
ultra-thin desalination layer on the surface of the membrane
element. The denser the desalination layer, the higher the salt
rejection rate, but
the lower the water production. The removal rate of different
substances by reverse osmosis is mainly determined by the structure
and
molecular weight of the substance. The removal rate of high-valent
ions and complex monovalent ions can exceed 99%, and the removal of
monovalent ions such as sodium ion, potassium ion and chloride ion
The rate is slightly lower, but it is also over 98%; the removal
rate of
organic matter with molecular weight greater than 100 can also
reach 98%, but the removal rate of organic matter with molecular
weight less
than 100 is lower. The salt rejection rate shown in the figure
below = (1-2.4/200) × 100% = 98.8%
Detail Pictures :
