... UV sterilizer---pure waterPlant process1. raw water pump-- provide the pressure to quartz sand filter/active carbon filter 2. Silica ... matter, organic matter, colloid ,ect.3. Active Carbon filter--Remove the color, free chloride, organic matter, harmful matter ,ect.4, ... any deposition of large Particles, most of the bacteria, and viruses into the RO membrane, The accuracy is 5um, for holding back any ...