As the name suggests, reverse osmosis can stop and reverse the osmotic effect mentioned above if you pressurize it on the high-concentration side, so that the water is forced from the high-concentration side to the low-concentration side, purifying the water (as shown in the figure below). This phenomenon is called reverse osmosis (reverse osmosis), and this semipermeable membrane is called a reverse osmosis membrane. This film is also quoted a lot in water dispensers.
The five-stage filtration system including reverse osmosis (RO) membrane is also a commonly used filtration system for water dispensers. After this five-stage filtration system, people can also drink healthier drinking water.
The first stage: the PP filter element is melt-blown from a polypropylene material that meets the FDA standard of the United States Food and Drug Administration, with a pore size of 5 microns. It is mainly used to capture suspended magazines, particles, sludge, etc. in water.
The second level: GAC high-efficiency activated carbon coconut shell activated carbon is granular high-efficiency adsorption activated carbon, which can absorb dichloroethylene, bleaching powder, pesticides, chlorine, odor, color, and other harmful chemical poisons in the water.
The third stage: The rear pp cotton filter element has a pore size of 1 micron, which can further absorb harmful substances such as different colors, odors, residual chlorine, and halogenated hydrocarbons in the water so that the filter element has a dual-function filtration effect.
The fourth stage: reverse osmosis (RO) membrane module, RO membrane can effectively remove more than 95% of metal ions and polar molecules (especially substances larger than their pore size). In addition, some, such as filterable viruses, range in volume from 0.009 to 0.1 microns. Bacteria with a volume of generally 0.2 to 10 microns can be completely filtered out, resulting in a chemical-free disinfection that meets the standard for direct drinking.
The fifth stage: the post-installed high-precision coconut shell activated carbon filter is made from the burning and pressing of pure natural coconut shell. After filtering, it can remove the odor and improve the taste of drinking water.