Reverse osmosis is a reverse migration movement of the infiltration. Driven by the pressure, it is a separation method which can separate the solute and solvent in the solution with the help of semi-permeable membrane’s interceptive roles. It has been widely used in the purification and concentration of various liquid. One of the most common examples is its usage in water treatment technics. With reverse osmosis technology, it can remove the inorganic ions, bacteria, viruses, and organic matter and colloidal impurities from the original water, so as to obtain high-quality pure water.

Reverse Osmosis membrane

Reverse osmosis (RO) membrane is a polyamide composite membrane which is composed by permeating liquid core columns, isolated networks, film, membrane and crust. Its filter aperture is only 0.0001 microns, the operating pressure is between 0.6-1.5 Map, and the desalting rate is high to 99%, so the chemical ions, bacteria, viruses are not passed and discharged with the wastewater. It only allows the water molecules and Oxygen molecules which are smaller than 0.0001 microns to pass, so as to achieve the purpose of purification.

two-stage reverse osmosis

The original water (tap water, surface water, underground water) is sent to pretreatment system by adding pressure to be filtered roughly, then to be filtered by sophisticated filter, and the water is transmitted to primary reverse osmosis by one-stage high pressure pump to be filtered, then the water is add pressure again by secondary high pressure pump and sent to second reverse osmosis system to produce the product water, this source is called two-stage reverse osmosis.

Raw water conductivity>500us/cm; purified water conductivity:1—10us/cm

optional equipment

1) RO membrane:

2) Pump:

3) Ozone system

4) UV sterilizer

5) SS304 water storage tank

6) Chemical dosing system

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