... suspended matter, organic matter, colloid and so on3. Carbon filter--Odor, free chloride, organic matter, harmful matter and so on4 ... pump-- Provide the high pressure to RO membrane, at least 1.0 Mpa6. RO system--RO system is the heart part of pure water ... purpose. The complete system of the water treatment includes pre-treatment for sand filter, active carbon filter, softener, micron filter, and the ...