As we all know, the cartridge is the most important core part of alkaline water filter machine, which determines the quality of filtration. In the early water purifying machine, single filter core filtration is more common, but this filter method cannot completely remove pollutants in the water, and the pollutants quickly gather again, the life of filter core is discounted, the effect of water purification is unsatisfied. In order to avoid the above problems, four to six levels of filter element combination is adopted on the water purifier. In this way, on the one hand, it enhances the water purification effect and on the other hand, it can prolong the service life of the cartridge. The following is an example of the combination of five stage cartridge.
One-stage filtration: now the water purifier on the market generally uses 5 m of polypropylene cotton as filter material, which is used to remove large particle impurities such as rust, sediment, and suspended solids. It is usually replaced once in 3-6 months in this coarse filtration.
Two-stage filtration: granular activated carbon filter (UDF) is a combination of adsorption, filtration and interception and catalysis, which can effectively remove chemical pollution caused by pesticides, pesticide residues, organic solvents and other industries. The general term of use is 3 - 6 months.
Three-stage filtration: using sintered activated carbon as filter material (CTO), it absorbs deeply the abnormal color, odor, residual chlorine, and filter out fine impurities in the water. In the water purifier for three stages, it also plays the role of protecting the main cartridge of the water purifier, and its service life is generally 3 to 6 months.
Four-stage filtration----the main cartridge 1. Ultrafiltration membrane cartridge: it is recommended to replace it once in 2 or 3 years.
4. High density activated carbon cartridge: it is recommended to replace it once a year.
Five stage filtration: T33 is recommended to use the silver active carbon cartridge, it can effectively adsorb the odor produced by the storage tank, bactericidal and bacteriostasis, which will ensure the safety of drinking water. It is recommended to replace it once in 12 months.