Comparison between RO water purifier and UF water purifier

With the rapid development of industry, the urban sudden water pollution accidents occur frequently in our country, the safety crisis of drinking water appears frequently, people pay more and more attention to the drinking water, and the reverse osmosis water purifier and the ultrafiltration membrane water purifier are gradually concerned by people because they can provide drinking water for people, but there are still some differences between the reverse osmosis water purifier and the ultrafiltration membrane water purifier The difference between filter and RO water purifier is that RO membrane filtration technology is used, and the pH value of the produced water is lower than that of the influent water Reverse osmosis membrane is a selective permeable membrane, which can remove all the harmful heavy metal ions dissolved in the water and other ions dissolved in the water, and Zui can largely remove the dissolved organic matters such as carbon tetrachloride and trichloromethane, which are harmful to the human body The water molecules in the raw water are retained for drinking, others include bacteria and diseases Poisons, pollutants, scale, etc are all discharged as concentrated water, just as after water enters the human body, what the human body can absorb is retained, and what cannot be absorbed is discharged with urine Therefore, the reverse osmosis pure water machine has the reputation of "kidney in vitro" The ultrafiltration membrane water purifier adopts the ultrafiltration membrane filtration technology Ultrafiltration membrane purification technology is a pure physical filtration, which relies on the dense micropores on the surface of the ultrafiltration membrane for screening The filtration accuracy depends on the pore size and pore uniformity of the ultrafiltration membrane Generally, the intercepted molecular weight is mainly 50000-200000 Dalton, and the suspended solids, particles, bacteria, colloids, viruses and other macromolecular substances in the water can be intercepted and retained, and the pH value of the produced water remains unchanged, but the water is soluble Some of these small molecules are beneficial to human body, such as calcium, zinc and iron ions; some are harmful to human body, such as heavy metal ions such as arsenic, mercury and lead, and organic matters such as carbon tetrachloride and chloroform This type of machine is suitable for the use of public families, and there are many brands of ultrafilter on the market at present Compared with ultrafiltration, reverse osmosis has several obvious advantages * it can remove the harmful heavy metal ions in water (and also remove the hardness of water); secondly, it can remove the micro colloid and other pollutants in water (micro pollutants that cannot be removed by ultrafiltration) Thirdly, it can remove the carbon tetrachloride, trichloromethane and other harmful organic matters in water No matter the ultrafilter or the pure water machine, they all play the role of protecting the healthy water for the family in the terminal purification They are the products of high and new technology in the 21st century It is believed that these two kinds of machines will enter into thousands of households soon and shoulder the important responsibility of protecting the health of drinking water together.