Depending on individual needs, each has its own benefits.
Currently on the market, water purifier products can be roughly divided into two categories, one is the RO reverse osmosis water purifier as the representative of the water purifier, the other is the ultra-filtration machine as the representative of the pure physical filtration products.
RO comes from the English acronym, translated means reverse osmosis. Solution, water flow direction is from low concentration to high concentration flow, through the pressure of the solution, water from high concentration to low concentration flow is simple reverse osmosis principle.
RO reverse osmosis was first used in aviation and medical fields, dialysis of kidney patients, astronauts, the secondary use of urine are reverse osmosis principle. The reason is very simple, RO membrane pore size of 0.0001 microns or 0.1 nanometers, only water molecules and a very small number of ions can pass through, to achieve the strongest filtration effect.
Compared with RO technology, ultrafiltration membrane technology was applied to the water purification end earlier, the early period of ultrafiltration has been in the wastewater treatment plant and other organizations to carry out services, the early drinking fountains are also used in ultrafiltration technology. Ultrafiltration filtration belongs to the pure physical purification, filtration by the pressure of a membrane technology, the current specifications of the membrane pore size rated range of 0.01-0.001 microns, the use of pressure differences in water quality filtration.
Ultra-filtration has its own advantages over RO water purifiers in terms of cost control, purification efficiency, and late maintenance costs, and ultra-filtration machines generally do not require electricity and do not produce wastewater. If the region's water situation is relatively good, the use of ultra-filtration principle of water purifier seems to be a better choice, even if it is straight drinking will not be too big a problem, so on the choice of ultra-filtration or RO reverse osmosis, just need to choose the right for their own can be.
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Choosing a water purifier note:
1, choose a home water purifier to be able to remove limescale.
Commercially available bottled natural water, mineral water, mineral water are low mineralized water, moderate mineral content is more conducive to health. Local tap water with high mineral content, the water quality is hard, the kettle is easy to scale, scale inside the heavy metals, bacteria can easily induce disease, so you should choose to remove the scale of the water purifier. Many brands on the market, especially imports and direct sales or sales products belong to the microfiltration and ultrafiltration water purifier, can not remove limescale.
2, choose a home water purifier can automatically discharge in a timely manner.
Some water purifier cartridges do not have a sewage outlet, impurities in the water are intercepted and adsorbed in the cartridge, with the increase in water consumption in the cartridge more and more dirt, adsorption of dirt will be back to flow in the water, resulting in secondary pollution, resulting in purified water is dirtier than the original water.