Classification of filter element of water purifier
I. Activated carbon
Since the beginning of the twentieth century, activated carbon has been found to be used as a water treatment material. It is a kind of carbon with porous structure, and these pores are used to increase the surface area of activated carbon to absorb impurities. The physical properties of carbonized materials are closely related to their raw materials and treatment technology. At present, common carbon is mainly made of coal, trees, coconut shells or palms. Compared with other kinds of activated carbon, activated carbon fired from coconut shell has better stability, pore distribution and surface area, which makes it have better performance in water treatment.
Activated carbon replaces chemical substances, organic pollution sources, different colors and smells through the adsorption of porous tissues on the surface. Generally speaking, the smaller the volume of activated carbon, the larger its total area, the higher its holding and adsorption capacity, but the higher its pressure loss, which should be paid attention to when selecting activated carbon; The top-grade FLN coconut shell activated carbon is adopted, and the particle size ranges from 6* 12 (for large-scale systems) to 20*50 (for household filters), which is suitable for various occasions. Such as: drinking water treatment, beverage water treatment, aquarium management, home or factory use.
Second, PP cotton filter element
PP cotton filter element is mostly used to filter edema and suspended impurities. With micron as the grading standard, the common manufacturing methods of filters with different densities inside and outside the aperture, such as 1, 5, 10, 20 micron, etc. , so that the filter element has greater pollution tolerance. When selecting PP primary pollution filter, different filter apertures must be selected according to the use situation. Origami filter is similar to PP decontamination filter. It uses folding design to increase its filtering surface area. The origami filter element is made of paper and plastic, which has the characteristics of repeated cleaning.
Third, ultrafiltration membrane technology
Ultrafiltration membrane technology is a patented mixture, which contains a very fine activated carbon formula. It is precoated and spread in a large area in the ultra-high density pleated fiber layer by water pressure, and the adsorption area is about 80 football fields. At present, the most advanced ultrafiltration membrane technology is Franny UPVC technology, which is a model of full ultrafiltration filter element.
Their area is 40 times that of other brands of the same size. Even impurities or microorganisms in the pores of this 1/20000 cm (0.5 micron) fiber layer are blocked by pores, and the water in this pore must be pure, and the water quality is always perfect from the first drop to the last drop.
Four, KDF alloy filter materials
KDF is made of copper-zinc alloy, and its working mechanism is to remove heavy metals from edema through electrochemical reaction. KDF mainly treats heavy metal impurities and organic pollution sources in water. KDF is used at the front end of activated carbon, so that chlorine in water is removed by KDF before reaching the activated carbon. Therefore, activated carbon can more effectively remove other impurities remaining in water. Technically, it can effectively prolong the life of activated carbon to 15 times.
Above, Bian Xiao introduced four kinds of filter elements of water purifier in detail, which are activated carbon, pp cotton filter element, ultrafiltration membrane technology and kpf alloy rate table. These four kinds of filter elements have different principles, different intensities, different cleaning effects and different sundries, which are used in different places. When purchasing, consumers should understand their respective scope of application and objects of application, first make clear where they want to use it, and then buy it to avoid mistakes.