1, ultrafiltration membrane water purifier - disadvantages: can not remove calcium and magnesium ions in the water (water alkali).
2, water purifier - disadvantages: purified water is too pure, the lack of trace elements beneficial to the human body, the average out of a cup of pure water, to produce 3 cups of wastewater, while electricity must be used; and the machine itself is also relatively high maintenance costs, because the pipe fittings joints are more prone to seepage, and other minor problems.
3, water softener - shortcomings: can not get rid of bacteria, viruses, organic matter, not recommended to drink directly; regeneration requires salt consumption; and produce a certain amount of waste water.
4, magnetized water machine - disadvantages: people with gastrointestinal disorders should be cautious, because the magnetized water has a certain gastrointestinal stimulation.
5, centralized water purifier - disadvantages: purification precision is not particularly high, if used to deal with drinking water, the effect is not particularly good.
6, water ionizer - disadvantages: high cost (ordinary about 6 thousand), while the pH value of the water also depends on the electrolytic plate, need electricity. And it is recommended to use under the guidance of a doctor, blind use of some people's physical inappropriateness may have side effects.
Of course, not all water purifier brand products have the above problems, like the U.S. well-known water purifier brand Renso water purifier
Can effectively remove residual chlorine in the water, odor, lead, asbestos, viruses, turbidites, hexachlorobenzene, chloroform, and other carcinogens and volatile substances, and to maintain trace elements and minerals in the water. On the basis of drinking water treatment to further improve the taste of water, so that the family drinking water to achieve the best results.