RO(Reverse Osmosis, RO), the basic working principle is : using of a special high pressure

pump, increasing pressure to raw water, then force raw water penetrating through reverse

osmosis membrane under the pressure. Only water molecules and solvent less than microns

can pass through the RO membrane. 

Technological process of RO system

Raw water(raw water tank)→Water Resources Pump → Quartz sand filter→ activated carbon filter

→ water softener → precision filter → High pressure pump→ RO system→(pure water tank)