The filter element is the heart of the water purifier. Anyone who has used the water purifier must know that only by ensuring the quality of the filter element can pure water be purified. Today, let's talk about the filter elements used in household water purifiers?
1. PP cotton
PP cotton filter element is mainly used to filter suspended impurities in water. With micron as the grading standard, it is common to make the filter element with different densities of the inner and outer layers of the filter aperture of 1, 5, 10, and 20 microns, so that the filter element has greater capacity to absorb pollutants. When selecting the PP cotton filter element, the filter element aperture should be different according to the use situation.
2. Activated carbon
Activated carbon filter element is a kind of carbon with porous structure, which is mainly used to remove organic matters, residual chlorine, color and odor in water. At present, coal, trees, coconut shells or palm are the main raw materials of carbon. In general, the smaller the volume of activated carbon, the larger its total area will be, and the higher the adsorption capacity will be.
3. Ultrafiltration membrane
Ultrafiltration membrane technology is a patented mixture, including a very fine formula of activated carbon. It uses water pressure to spread PRECOAT (multiple pleated filtration) in advance between large ultra-high density multiple pleated fiber layers, and the adsorption area is the size of 80 football fields.
4. RO reverse osmosis membrane
The pore size of RO reverse osmosis filter element is as small as nanometer. Under certain pressure, water molecules can pass through the RO membrane, while inorganic salts, heavy metal ions, organics, colloids, bacteria, viruses and other impurities in the source water cannot pass through the RO membrane, so that the permeable pure water and the impermeable concentrated water can be strictly distinguished.
In addition to the filter element above, we also have quartz sand and KDF filter material in our water purifier, which are not widely used. The most widely used are reverse osmosis and ultrafiltration. So when we choose domestic water purifier, we can learn more about these two aspects, so that we can also get cost-effective products.