RO Reserve Osmosis Water Purification Process Introduction
2026.03.08
| In general, home use RO water purification machine has two to three pre-filters (stage 1 is a 5 um filter, stage 2 is an activated carbon filter, some model has a third stage 1 um filter). For some machine, a final activated carbon filter is installed between the clean water storage tank and gooseneck faucet. The first stage filter is used to remove sediments and sand etc. particles from water. The activated carbon pre-filter is used to remove organics, odorous molecules and chlorine etc. from water. RO membrane can remove most of the dissolved impurities from water. The final activated carbon filter is used to further remove residue contaminants after RO membrane. Use the semi-permeation principle, add pressure to the feed water and force it flow through the semi-permeation membrane to the clean waterside and leave impurities at the other side and be discharged with wastewater. Since most of the osmosis membranes are synthetic organic materials, to protect the life of osmosis membranes, there shall be residue chlorine removal units in front of the osmosis membrane. Normally, it is accomplished through the use of activated carbon filters. And, to prevent suspended particles blockage problems, a 5 um filter is installed in front of the activated carbon filter. The pre-activated carbon filter and particle filter can remove larger particles. And, the other substances, such as heavy metals, insecticides, bacterial, virus etc. substances toxic to human bodies, and hardness and odor etc. chemical substances that can affect taste are removed by the RO membrane. Although RO treatment method is the complete method, among all types water purifiers, that can remove all contaminants in water, however, the area between the water storage tank and the water faucet, is the location most accessible to contamination by microorganism. Thus, some companies installed UV disinfection light to prevent bio contamination by pathogen microorganism. |