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.
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.
Third stage pretreatment (Resin softener)
Cationic resin used for water softening, primarily to remove hardness of water. 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.
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