What is the difference and effect of granular activated carbon filter, compressed activated carbon filter and post-activated carbon filter in water purifier

Activated carbon filter is widely used in water purifiers. Taking pure water machine as an example, pure water machine has five filter systems, and the most widely used five filter elements are PP cotton, granular activated carbon, compressed activated carbon, RO membrane, and rear Activated carbon. It can be seen that there are 2, 3, and 5 of these five levels that are activated carbon. What are the differences and effects of these three types of activated carbon?
Activated carbon is a very good adsorbent material that is processed from raw materials such as charcoal, bamboo charcoal, fruit shells, and high-quality coal. Its large surface area, strong adsorption, can be reused, widely used in water treatment and air purification.



1 Granular activated carbon filter The granular activated carbon is generally made of coconut shell, fruit shell and coal as raw materials and refined by special techniques. The appearance of the granular activated carbon is black amorphous particles with pore structure and good adsorption performance. It is applied to gases and liquids. The purification aspect.
Role in the water purifier: The particle activated carbon filter (UDF) integrates adsorption, filtration and interception, and catalysis, and can effectively remove pesticides, pesticide residues, organic solvents and other industrial chemical pollution. It can also effectively remove organic matter, residual chlorine and other radioactive substances in water, and has the effect of decolorization and deodorization. The general use period is 3-6 months.


2. Compressed Activated Carbon Filter Compressed Activated Carbon is a mixture of granular activated carbon powder material and inorganic liquid binder. It is poured into a special mold, compressed by a high-pressure press, and dried after being ejected from the mold.
The role in the water purifier: Compressed activated carbon filter (CTO) in the water purifier can deeply absorb the heterochromatic, odor, residual chlorine in the water, and filter out fine impurities. Used in the third stage in the pure water machine, also plays the role of protecting the RO membrane, the service life is generally 3-6 months.





3, post-activated carbon filter post-activated carbon is a new type of deep-filter filter, using high-quality coconut shell activated carbon with low-melt adhesive composition. Some high-quality post-active activated carbon filters are silver-loaded, and the silver atoms can be sterilized and bacteriostatic.
The role of water purifier: post-activated carbon filter (T33) as the last process of pure water machine, you can further absorb the water color odor, increase the oxygen content of purified water, mainly to improve the taste of water. Especially for water purifiers that use pressurized water storage tanks, post-activated carbon can effectively absorb the odors produced in the storage tanks. The recommended service life is 18 months.




In general, through the analysis of three kinds of activated carbon filter elements, it can be seen that granular activated carbon can form three models of sintering, compression, and extrusion after a certain process and plasticity, in which sintering is sintered activated carbon and compression is compressed activated carbon. The rear activated carbon raw material is a high-quality coconut shell, and the granular activated carbon has similarities in raw materials, but the treatment process is more complicated. Their position in the water purifier determines the different roles in water treatment.
Whether it is ultrafiltration water purifiers or reverse osmosis water purifiers, or nanofiltration water purifiers, although the key technologies in the machines have changed, the constant is always activated carbon. It can be seen that activated carbon plays a very important role in water purifiers.