Working process

1. Raw water pump-- provides the pressure to quartz sand filter/active carbon filter
2. Quartz Sand filter-- get rid of turbidity, suspended matter, organic matter, colloid, ect.
3. Active carbon filter--Remove the color, free chloride, organic matter, harmful matter, ect.
4, Softener—using ion exchange resin to exchange "ions" of calcium and magnesium is the most common and the easiest method of removing hardness of water and render the water suitable for utility purpose
5. Micron filter--prevent any deposition of large Particles, most of the bacteria, and viruses into the RO membrane, The accuracy is 5um, for holding back any large particulates such as large iron, dust, suspended matter, impurity. 
6. High pressure pump-- Provide the high pressure to RO membrane. 
7. RO system--RO system is the main part of pure water treatment plant. The RO membrane's desalt rate can reach as high as 99%, it is capable of removing over 99% of ions, bacteria, particles and 98% of organic.