Configuration requirements for the third-stage filter element of the pure water machine

It is well known that the first three-stage filtration of the water purifier serves for the RO membrane. As the pretreatment of raw water, it is designed to increase the service life of the RO membrane. Then the first filter element of the RO membrane is still a 1 micron pp cotton filter element. There are three reasons: 1. It can effectively prevent the activated carbon powder from entering the RO membrane, protect the RO membrane and prolong its service life. Because before installing the activated carbon filter element, no matter how clean it is, carbon powder will flow out. Installing a 1-micron filter element before the RO membrane can act as a barrier, greatly reducing the possibility of artificial pollution of the RO membrane. 2. The precision of the pp cotton filter element is 1 micron, and the harmful substances such as bacteria, sediment particles and rust larger than 1 micron can be removed as much as possible. When the first 5 micron filter element fails, it can still protect the RO membrane and reduce the Probability of RO membrane fouling. 3. If the third pole is a block compressed activated carbon, there are three filters in the five-stage filtration that are activated carbon, and the activated carbon filter element is reused, which not only wastes resources, but also increases the cost. The second stage is generally the activated carbon filter element of the pure water machine, which needs to be washed during installation, which often causes a lot of black water, and it is easy to be washed out. If it is changed to compressed activated carbon black water, the problem will be solved, and the burden of the third-level PP cotton will not be increased.
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