What does the traditional water purifier mean?

Now more and more families consider safety and use water purifiers. If water purifiers are classified according to filtration accuracy, they can be roughly divided into primary filtration, microfiltration, ultrafiltration, nanofiltration and reverse osmosis, so how to choose a suitable water purifier has become a hot topic. In order to prevent regret after buying, let's first understand the principles and functions of various water purifiers!

Classification of water purifier 1, PF primary filtration, also known as household pre-filtration or pipeline filtration, is usually installed near the water inlet pipe and water meter of the house, and adopts stainless steel filter screen. The filtration aperture is 200 to 20 microns, most of which is 90 microns, and the better one can reach 50 microns. The main function is to filter the rust, sediment and other turbid substances in the water inlet pipeline, and to protect the water heater and shower.

2. Microfiltration (MF) Microfiltration refers to water purification equipment with a filtration pore size of 1 to 0. 1 micron. This kind of water purifier is rare at present. There are common water purification faucets with filtration aperture of 0. 1 micron and water purifiers with 1 micron PP cotton, which are our common pre-filtration bottles, and can only filter out hair, red worms and rust deposits.

3. Ultrafiltration (UF) Ultrafiltration pore size can reach 0. 1 to 0.0 1 micron, which is enough to filter bacteria and viruses in water, but it can't filter the plasma combination of heavy metals in water. Minerals in water can be retained during ultrafiltration. Some users who buy UF do not leave power sockets in the kitchen cabinets, and some want to keep mineral ions in drinking water, but at the same time the water still contains some heavy metals.

4.RO membrane is the main filtration component of RO reverse osmosis water purifier, and the filtration accuracy of RO membrane can even reach 0.000 1 micron, which can basically filter out any impurities in water, only water molecules can penetrate, and the purpose of direct drinking can be achieved through filtration. The biggest problem of reverse osmosis water purifier is the quality of filtration. At the same time, harmful substances in the water are intercepted, and minerals beneficial to the human body are also stopped. In the past few years, reverse osmosis technology has become the mainstream technology in the water purifier market because it can filter out heavy metals that ultrafiltration cannot solve. The problem of drinking water safety has been basically solved.

5, nanofiltration (NF) Now many scholars in the World Health Organization think that reverse osmosis technology filters water too cleanly, which is not good for the health for a long time, and nanofiltration has been respected by many people because it can partially retain minerals. Nanofiltration is a water purifier with a very small pore size of 65,438+0 to 65,438+0 nanometers. Because this kind of nanofiltration membrane is charged, it can be purified by physical screening and dissolution diffusion at the same time, which makes the nanofiltration membrane still have high desalination performance under very low pressure and can filter out most harmful substances, such as viruses, bacteria, microorganisms, various organic substances and some heavy metals, which are between ultrafiltration and reverse osmosis. . However, nanofiltration is still not a real selective filtration, and it is still difficult to separate minerals and heavy metals in water. So if you want to drink water containing natural minerals, you still have to bear the risk of harmful heavy metals.

6.NSP membrane chromatography science Recently, Tai Fang developed a new filtration membrane, called NSP membrane chromatography water purification membrane, which can intercept heavy metals and let minerals pass through smoothly through selective adsorption. This subversive innovation has reached dozens of membrane patents alone. Authoritative test reports show that the removal rate of lead, cadmium, chromium and arsenic by Tai Fang water purification membrane chromatography has reached the same level as that of reverse osmosis technology, and there is almost no interception of major elements such as calcium, magnesium and sodium. This technology was blank in the world before.

The filtration principle of NSP membrane chromatography double-effect water purification technology is similar to a magnet, unlike the traditional filtration technology, which mainly depends on the pore size of the filter membrane. When the water to be purified passes through, the water purification membrane has a strong affinity adsorption effect on heavy metals, but has no effect on minerals such as calcium and magnesium, thus achieving the effect of selectively filtering heavy metals and retaining beneficial minerals. By using this technology, directional selective filtration can be truly realized, which not only solves the safety problem, but also solves the health concern of drinking purified water for a long time.

The water purifier is safe, hygienic, healthy and convenient, which often makes people feel like opening a new door. When refitting the kitchen, they will naturally want to install a water purifier to improve the quality of life of the whole family. However, if they bought it wrong, they didn't realize it was not suitable until after installation. Do you have many answers after reading this popular science?