The pretreatment equipment is to pre-process the raw water, improve the water quality of the water supply, meet the requirements, reduce and
delay the pollution of the membrane, and prolong its life. The objects it treats are mainly microorganisms, bacteria, colloids, organic matter and
heavy metal ions in the influent water. , solid particles and free chlorine. To meet the requirements of the reverse osmosis unit water supply, the
reverse osmosis unit can be operated stably for a long time.
Reverse osmosis (RO) is the selective retention of a reverse osmosis membrane that allows only water molecules to pass through. At a
pressure above the osmotic pressure of the solution, the water molecules are continuously permeable to the membrane, while the heavy metal
is smaller than the pore size of the reverse osmosis membrane. Ions, organic matter, bacteria, viruses, etc. are trapped on the inlet side of the
membrane to achieve separation and purification purposes. The whole working principle adopts the physical method, and no chemical
disintegration occurs without adding any fungicides and chemicals.
Reverse osmosis system Pretreatment:
Pre-treatment of raw water to improve the water quality of the water supply to meet the requirements of reverse osmosis water, reduce and
delay membrane fouling and prolong membrane life. The pretreatment objects are mainly microorganisms, bacteria, colloids, organic matter
and heavy metal ions in the influent water. , solid particles and free chlorine. To meet the requirements of the reverse osmosis unit water supply,
the reverse osmosis unit can be operated stably for a long time. It consists of a sand filter, a carbon filter, a water softener and a security filter.
Quartz sand filter: filter out sediment, impurities, suspended matter in water, and reduce the SDI (contamination index density) value of raw
water.
Activated carbon filter: has a dual role, one is adsorption, and the other is filtration. It removes chemical organic matter, heavy metals, color,
odor, residual chlorine, etc. in tap water to improve the taste.
Resin water softener: The sodium cation exchange resin is exchanged to remove the scale ions such as calcium and magnesium in the raw
water to remove the hardness of the raw water.
Precision (security) filter: 5 micron PPF filter, intercepting objects larger than 5 microns, extending the life of the membrane.
