|Most of the world's water pollution is serious, exacerbating the contradiction of water shortage. Traditional tap water treatment methods can not guarantee the provision of good quality drinking water, and there are two problems in municipal water supply, such as high water tank supply, long water supply pipeline, will cause potential rust, scale and Microbial pollution problems, therefore, a variety of brands of water purifier came into being.
1. Water purifier principle: boiling method
Refers to the tap water after drinking, this is an ancient method, widely used in the country. Water boil can kill bacteria, but for some chemicals and heavy metals can not be removed, even if its content is very low, so drinking is still unsafe.
2. Water purifier principle: mineralization method
(Such as calcium, zinc, strontium and other elements) is intended to play a role in the health of mineral water. Commercial water purifiers generally by adding water in the water heater to achieve the purpose of mineralization, but the artificial mineralization effect is still a controversial issue.
3. Water purifier principle: water purifier
Is Japan's newly invented product, it is the first water purification treatment, and then carry out electrolytic activation, the alkaline activated water and the human body environment PH value corresponds to the human body has a health effect, suitable for drinking; acid activated water available In the face, bath, a cosmetic effect. However, the principle of water conservancy, water quality and the use of the impact on the human body, have different views, to be further explored.
4. Water purifier principle: activated carbon adsorption
More commonly used, multi-purpose nature, coal, fruit shell (nuclear) and other carbon substances through chemical or physical activation method. It has a lot of microporous and specific surface area, which has a strong adsorption capacity, can effectively adsorb organic pollutants in water. In addition, during the activation process, the non-crystalline part of the activated carbon surface forms some oxygen-containing functional groups, which make the activated carbon have chemical adsorption and catalytic oxidation and reduction properties, and can effectively remove some metal ions in the water.
5. Water purifier principle: reverse osmosis membrane method
Membrane separation technology, this method through the pressure of water through the synthesis of the membrane, the film allows only pure water through, and pollutants are excluded. The use of R / O reverse osmosis technology, the French government and space agency to spend hundreds of millions of dollars, in order to solve the astronauts on the moon's drinking water problems, after years of efforts to develop high-tech achievements. Purification of high precision, suitable for poor water quality areas.
6. Water purifier principle: micro-filtration and ultrafiltration method
Microfiltration is a cellulose or polymer material made of microporous membrane, the use of its uniform aperture to intercept the water particles, bacteria, colloids, etc., so that it can not be removed through the filter. This microporous membrane filtration technology, also known as particle size filtration technology, can filter micron or nano-scale particles and bacteria. Ultrafiltration and microfiltration are membrane separation technology, there is no obvious between the two boundaries, ultra-filter working pressure is generally about 0.3 MPa, can remove the water macromolecules, bacteria, viruses, but the flux is low.
7. Water purifier principle: composite type
When a process is difficult to remove harmful substances in water, the use of two or more of the process is compound type. Such as activated carbon adsorption, ultraviolet disinfection, activated carbon adsorption, reverse osmosis, activated carbon adsorption, microfiltration (ultrafiltration), polypropylene microfiber, live Tim charcoal, microfiltration (ultrafiltration) and so on. In the composite water purifier, the membrane technology composite water purifier water purification performance is excellent, especially in the removal of microorganisms (bacteria, algae, etc.) have a more significant effect, some of which excellent quality water purifier can be directly drinking raw water, Has been welcomed by the vast number of consumers, water purifier has become the current development of hot spots.