As we all know, the filter element is the most important core part of the water purifier, which determines the filtering effect. In the early water purifier, single filter element filtration is more common, but this filtering method cannot completely remove the pollutants in the water, and the pollutants are rapidly Accumulation, filter cartridge life is greatly reduced, water purification effect is poor. In order to avoid the above problems, the water purifier uses a combination of four to six filter cartridges, on the one hand to enhance the water purification effect, on the other hand to extend filter cartridge life.
The following is an example of a five-stage filter cartridge combination:
One-stage filtration: The water purifier currently on the market generally uses 5μm PP cotton as the filter core material, used to remove rust, sediment, suspended solids and other large particles of impurities. Rough filtration is generally replaced in 3-6 months.
Secondary Filtration: The granular activated carbon filter (UDF) integrates adsorption, filtration and interception, and catalysis, which can effectively remove pesticides, pesticide residues, organic solvents and other industrial chemical pollution. It can also effectively remove organic matter in water. Residual chlorine and other radioactive substances, and decolorization, deodorizing effect. The general life of 3-6 months.
Three-stage filtration: Activated carbon is used as the filter material (CTO) (some manufacturers use PP cotton as the filter material), which absorbs different colors, odors, residual chlorine, and fine impurities in the water. It is used in water purifiers. The third stage also protects the main filter element of the water purifier. Its service life is generally 3-6 months.
A four-stage filter and a main filter element (If you want to understand the filter principle of various filter elements, please go to the headline number space to see the professional introduction of various water purifiers)
1. Ultrafiltration membrane filter: It is recommended to replace it once every two years.
2, nanofiltration membrane filter: It is recommended to replace it once every 2 years.
3, RO reverse osmosis membrane filter: It is recommended to replace it once every 2 years.
4, high-density activated carbon filter: It is recommended to replace it once a year.
Five-stage filtration: The rear activated carbon filter (T33) acts as the last step of the water purifier, which can further absorb the odor in the water, increase the oxygen content of the purified water, and mainly improve the taste of the water. Especially for the use of pressure tanks Pure water machine, post-activated carbon is recommended to use silver-loaded activated carbon filter, you can effectively absorb the odor generated by the storage bucket, but also sterilization and antibacterial, ensure drinking water safety. Recommended service life of 12 months.
Activated carbon water purifier uses ultraviolet lamp to eliminate fine and microbes. It is recommended to replace it once a year.