reverse osmosis water purification system for produce pure water 1, desalt rate over 99 2, capacity: 500-50000LPH ModelWT ... no.: Not more than 20 Installation: Raw water pump+silica sand filter+active carbon filter+softener + micron filter+high pressure pump ... suspended matter, organic matter, colloid and so on 3. Active Carbon filter--Remove the color, free chloride, organic matter, harmful matter ...