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Contact: Yiwen
Company: Zhangjiagang Longway Machinery Co., Ltd
Luyuan economic development zone, zhangjiagang city ,jiangsu province, P.R China
zhangjiagang city 215616
Phone: 0086-189-52441725
Fax: 0086-512-55958930
E-Mail: Send Inquiry
Date/Time:  2/26/14 5:53 GMT

RO Water Treatment system for Drinking Water Flow chart : Raw water tank—ra

RO Water Treatment system for Drinking Water
Flow chart :
Raw water tank—raw water pump—multi-medium filter--active carbon filter –
water softner (Sodium Ion Exchanger)—precision filter—RO mainframe(including
chemical cleaning device)—ozone generator—finished product water tank

RO water treatment equipment for drinking water
First stage pretreatment.(Sand filter)
The use of multi-medium quartz sand filters, main purpose is to remove the
water contains sediment, manganese, rust, colloid material, mechanical
impurities, suspended solids and other particles in the above 20UM of
substances hazardous to health. The effluent turbidity is less than 0.5NTU,
CODMN less than 1.5mg / L, iron content of less than 0.05mg / L, SDI less than
or equal to 5. Water filter is a kind of "physical - chemical" process, the
water through granular materials when isolated filter water impurities and
colloidal suspensions. Filter is an effective water purification and treatment
of the main process in the preparation of pure water is an indispensable
Second stage pretreatment (Carbon filter)
Activated carbon filters used to remove the pigment in the water, smell, a
large number of chemical and biological organisms, reducing the residual value
of water and pesticide pollution and other harmful pollutants. The structure of
activated carbon filters and quartz sand filters, the difference is placed
inside the strong adsorption capacity of activated carbon for removal by the
quartz sand filter without the filter out organic material, adsorption of
residual chlorine in the water, using water more than less than or equal to
chlorine 0.1ML/M3, SDI less than or equal to 4, are strong oxidants chlorine,
there are various types of membrane damage, in particular, reverse osmosis
membranes are more sensitive to chlorine. In addition, the activation process,
the surface of activated carbon to form non-crystalline parts of some oxygen-
containing functional groups, these functional groups can have a chemical
adsorption of activated carbon catalytic oxidation of bad news, to restore the
performance, can effectively remove a number of metal ions in water.
Third stage pretreatment (Resin softener)
Cationic resin used for water softening, primarily to remove hardness of water.
The hardness of water is a major calcium (Ca2 +), magnesium (Mg2 +) ion
composition, when containing the raw water hardness ions through the resin
layer, the water of the Ca2 +, Mg2 + was exchanged resin adsorption, and other
objects at the same time the quality of the release of sodium Na + ions flow
from the softener in the water is removed from the softened water hardness
ions. So as to effectively prevent the reverse osmosis membrane fouling.System
can automatically recoil, and so is red.
Fourth stage pretreatment (Micron filter)
Particle size in water to remove fine particles, sand filters can remove very
small colloidal particles in the water, so that the turbidity reached 1 degree,
but still per milliliter of water for hundreds of thousands of particle size 1-
5 microns colloidal particles, the pressure on this filter to remove water
after the particle size of 100 microns or less in small particles, to further
reduce the turbidity, to meet the next process of the water requirements of the
protection of the next long-running processes.
RO system
Using reverse osmosis technology for desalination, reverse osmosis membrane was
only 0.001 micron pore size, can be harmful to remove dissolved solids and
bacteria, viruses, etc., desalination rate of more than 99.6 percent, in line
with national standards to produce pure water, the host section contains the
security filter, high-pressure pump and reverse osmosis membrane, security
filters for the fourth grade and above pre-treatment systems, high-pressure
pump is the host of one of the core equipment for the reverse osmosis membrane
elements to provide sufficient pressure to overcome the penetration resistance
to pressure and run to meet the needs of a device to achieve the rated water.
RO Water Treatment system for Drinking Water Flow chart : Raw water tank—ra
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SOURCE: Import-Export Bulletin Board (
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