There are many types of household water purifier filters currently on the market. Because modern water purifiers use more filter cartridges and change the phenomenon of single filter cartridge filtration, the current water purifiers are mostly multi-stage filtration, and single-stage filtration has been eliminated. The composite filter water purifier function is more powerful and the filtering accuracy meets the national standards.
According to the characteristics of the water purifier and the different filtering accuracy, the water purifiers are divided into main filter cartridges and auxiliary filter cartridges. The main filter cartridges mainly refer to the filter cartridges that play a central role. The core filter cartridges generally include: ultrafiltration membrane cartridges. , RO membrane filter, ceramic filter and other types of these:
(1) Ultrafiltration membrane
In general, ultrafiltration membranes have a very good filtration effect on heavy metals, bacteria, viruses, and sediment rust. They pass through membrane pores between water molecules, minerals and bacteria, viruses, and macromolecules, and are then filtered. Material of different materials, with strong filtration accuracy.
(2) RO membrane
The main purpose of the RO filter is to filter the tap water accurately and also to filter it deeply. The only water molecules that pass through the RO membrane hole are the pure water, so the water machine whose RO is the core material is also called a water purifier. Or RO machine. At the same time, RO membranes are widely used in the aerospace field, seawater desalination, sewage treatment, and heavy metal recovery.
(3) ceramic filter
The ceramic filter has relatively low filtration accuracy and can remove rust, sediment, and red worms. The effect is relatively low. Currently there are ceramic filter water purifiers in Dalton, and there are also some small manufacturers, which are used by speculators. Electrolyzing water machine, water activation machine, acidic water quality, alkaline water quality, etc.
Composite filter or auxiliary filter: There are many types of auxiliary filter, and the effect is different. Some of them are conceptual filter elements, which will not achieve actual results at all, but only increase selling points.
Composite filter elements are:
Tourmaline
There is no water purification effect, there are anti-radiation effects, while tourmaline materials are more expensive, so it is generally claimed that the water purifier contains tourmaline is mostly false speculation.
Activated carbon
The main role is adsorption, different carbon adsorption is not the same, in general, the larger the surface area of carbon particles, the stronger the adsorption, the higher the filtration accuracy, the better the filtering effect, the carbon needs special treatment under high pressure to achieve better Activity.
Mineralized ball
The mineralized ball is used to mineralize the water and increase the mineral content in the water. The quality of the effluent can be alkaline, but after some time, the alkaline effect is almost gone. Therefore, it is generally advisable to start alkaline water for only a few weeks. At the same time, alkaline water does not have any effect on the human body because any water passing through the stomach will eventually become acidic.
Activation Ball
Activation of the ball is also a propaganda, in fact, the previous increase in minerals in water, the same effect and mineralized ball.
KDF
This is a copper-zinc alloy for the removal of heavy metals in water, and it has antibacterial and bactericidal effects.
Softening filter
Mainly sodium salt, through the resin exchange, removal of scale, the role is obvious, but there is a drawback is that the sodium salt in the water exceeds the standard, excessive sodium salt leads to adverse factors on the human body.
Remove residual chlorine filter
In general, calcium sulfite, or frosted sand, is used to remove residual chlorine in water.
There are many auxiliary filter cartridges for water purifiers, but many auxiliary filter cartridges are merely conceptual hype. The effect on the water purifier is poor, the effect is poor, and there are even side effects, so it is difficult to achieve the desired effect.