The Core Technology Breakthrough: The Key to Deep Purification
(A) Ultra-filtration technology principles and advantages
Ultrafiltration technology is based on the screening effect of ultrafiltration membrane. The pore size of ultrafiltration membrane is generally between 0.001 – 0.1 micron, when the water flows through the ultrafiltration membrane, driven by the pressure difference, the water molecules and small molecules of solutes can pass through the membrane holes, while the large molecules of organic matter, colloid, bacteria and so on are retained. This process does not require the addition of chemicals, relying on physical screening to achieve purification, retaining the minerals and trace elements in the water is beneficial to the human body, while effectively removing microorganisms and macromolecular impurities in the water, so that the water is clear and transparent, good taste, and ultrafiltration membrane has a larger flux, lower energy consumption, easy to use in the family and commercial premises widely used.
(B) the excellent performance of reverse osmosis technology
Reverse osmosis technology relies on the semi-permeable principle of reverse osmosis membrane work. In the reverse osmosis system, applying pressure higher than the osmotic pressure of the solution, so that the water from the side of the high concentration to the side of the low concentration of reverse osmosis, and the dissolved salts in the water, heavy metal ions, pesticide residues, etc. are almost all retained by the reverse osmosis membrane, the rate of desalination can be as high as 95% or more. Reverse osmosis technology can produce very high purity water, completely remove harmful substances in water, but its pressure requirements for water inlet is high, need to be equipped with a special booster pump, and will produce a certain proportion of concentrated water, in the application of the need to take into account the rational use of water resources and equipment operating costs.
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(C) nanofiltration technology: balance and innovation
Nanofiltration technology between ultrafiltration and reverse osmosis, its membrane pore size of about 1 – 10 nanometers. Nanofiltration membrane can selectively retain metal ions of divalent and above, some monovalent ions and organic matter with molecular weight between 200 – 1000, and the retention rate of monovalent salts is relatively low. This enables NF technology to remove harmful substances from the water while retaining an appropriate amount of minerals, producing water with a good balance of taste and health. Nanofiltration technology has relatively low operating pressure, low energy consumption, less concentrated water emissions, in the water quality requirements and want to retain a certain amount of minerals in the application scenarios have a unique advantage for the diversified development of water purifier technology provides an important support.