At present, there are two technologies in the water purifier industry:
1, reverse osmosis.
2. Ultrafiltration. Reverse osmosis is recognized as the safest and most scientific water treatment technology in the world. The water from the reverse osmosis membrane is basically pure water, that is, only water molecules, so it is the safest, so the reverse osmosis machine is also called pure water machine. The filtration accuracy of ultrafiltration is second only to that of reverse osmosis, and the product is not pure water. Because the aperture ratio reverse osmosis of ultrafiltration membrane is greater, some manufacturers promote that ultrafiltration water purifier is a water purifier that can retain minerals, but in fact it is easy to avoid the heavy and light. Since it is not pure water, there may be bacteria, viruses, chemical pollutants in water with a diameter smaller than that of ultrafiltration membrane, and of course there may be some elements beneficial to human body.
At present, the standard configuration of water purifiers in the water purification industry:
The first stage: PP cotton, function: filtering large particle pollutants;
The second stage: granular activated carbon GAC, which is used to adsorb chemical pollutants in water;
The third stage: CTO of sintered activated carbon, which is used to further adsorb chemical pollutants in water;
The fourth stage: RO reverse osmosis membrane/ultrafiltration membrane, which is used to intercept the untreated pollutants in the first three stages;
Stage 5: Post-activated carbon T33 can improve the taste of purified water/purified water.