How much do you know about filtration precision? How to choose between ultrafiltration, nanofiltration and reverse osmosis?

In the pursuit of healthy drinking water on the road, the water purifier has become a necessary choice for modern families. The filtration technology of the water purifier is the key to determining its purification effect. Filtration precision refers to the filter (cartridge) can effectively filter out the smallest solid particles of pollutants in the size, which reflects the filter on certain sizes of solid particles of pollutants to control the ability of the filter is one of the important performance parameters of the filter.

Today, we will be in-depth analysis of ultrafiltration, nanofiltration, reverse osmosis, the three mainstream water purifier filtration technology, to help you better choose the right water purifier.
First, ultrafiltration technology
Ultrafiltration, as the name suggests, is a higher precision filtration technology. It uses ultrafiltration membrane as a filtration medium, which can effectively remove suspended solids, colloids, bacteria and other macromolecular substances in water. The pore size of ultrafiltration membrane is usually between 0.01-0.1 micron, which is able to retain minerals and trace elements in the water while removing harmful substances. Therefore, ultrafiltration water purifiers are suitable for those users who wish to retain minerals in the water.

Second, nanofiltration technology
Nanofiltration technology is a filtration technology between ultrafiltration and reverse osmosis. The pore size of nanofiltration membrane is smaller than ultrafiltration membrane, usually between 0.001-0.01 microns. This technology is able to remove smaller molecules from water, such as some viruses and heavy metal ions. At the same time, the nanofiltration membrane also retains some minerals and trace elements, making the filtered water both safe and healthy. Nanofiltration water purifiers are suitable for families with high water quality requirements.

Third, reverse osmosis technology
Reverse osmosis technology is currently one of the highest precision water purification technology. It uses a reverse osmosis membrane as a filtration medium with a very small pore size, usually between 0.0001-0.001 microns. This technology is capable of removing almost all impurities from water, including bacteria, viruses, heavy metal ions, organic matter, etc. At the same time, due to the extremely high filtration precision of the reverse osmosis membrane, the filtered water is almost pure water and does not contain any minerals or trace elements. Therefore, reverse osmosis water purifiers are suitable for users who have extremely high requirements for water quality or who wish to completely remove all impurities from the water.

Fourth, technology comparison and selection recommendations
Filtration precision: reverse osmosis > nanofiltration > ultrafiltration. According to the different needs of water quality, users can choose different precision filtration technology. Mineral retention: Ultrafiltration and nanofiltration can retain some minerals and trace elements, while reverse osmosis removes almost all minerals. Cost of use: Since reverse osmosis technology has the highest filtration precision, its filter cartridges are replaced relatively more frequently and the cost of use may be slightly higher. Applicable Scenarios: Ultrafiltration is suitable for users who wish to retain minerals; nanofiltration is suitable for families with high requirements for water quality; reverse osmosis is suitable for users with extremely high requirements for water quality or special needs.

Filtration technology: ultrafiltration; high filtration precision, removal of large molecules; pore size range of 0.01-0.1 microns; mineral retention: retention of some minerals and trace elements; removal of substances such as bacteria, viruses, suspended solids, colloids, etc.; the use of relatively low cost; applicable to the scene of family kitchens, water dispensers, etc., and want to retain minerals

Filtration technology: nanofiltration; higher filtration precision, removal of small molecules; pore size range of 0.001-0.01 microns; mineral retention: retain some minerals and trace elements; removal of substances bacteria, viruses, heavy metal ions, organics, etc.; the use of medium-cost; applicable to the scene of high-grade housing, offices, etc., the quality of the water has a higher requirement

Filtration technology: reverse osmosis; higher filtration precision, removal of large molecules; pore size range of 0.0001-0.001 microns; mineral retention retention: almost remove all minerals and trace elements; removal of substances bacteria, viruses, heavy metal ions, organics, etc.; the use of relatively high cost; applicable scenarios laboratories, medical equipment, special needs of the family, etc., the water quality is very high requirements

Fifth, the choice of recommendations according to the water quality:
If the water quality is softer and less polluted areas, ultrafiltration is a good choice; if the water quality is harder or there are more pollutants, you may need to consider nanofiltration or reverse osmosis. Choose according to the use of demand: if the water quality requirements are very high, want to remove all the impurities in the water, including beneficial mineral elements, you can choose reverse osmosis; if you want to retain some of the mineral elements, you can choose the nanofiltration; if you just need to remove large particles of impurities, microfiltration or ultrafiltration can meet the demand. Consider the cost and maintenance: reverse osmosis water purifier has the highest filtration precision, but it also produces more wastewater and needs to be pressurized and electrified, so the running cost is higher; nanofiltration and ultrafiltration have relatively low running costs, but they also need to replace the filter cartridge regularly.