Why buy a water filter?

Bottom line: improved water, you can drink; substitute bottled water, cheaper, more hygienic. Currently the water quality all over the country, there are some security risks. Water northern areas such as universal hard, especially my live Shanxi Province, prone to cause stones and other effects on human health; the south widespread heavy metals exceeded, cause harm to people. Water purifiers for different regions targeted cleanup, so the indicators of drinking water meets health requirements. The main source of household drinking water are: boil the tap water; bottled drinking water access; direct purchase of bottled water for daily life. Analysis of the relative advantages are various methods of water purification. 1. boil the tap water, still unable to remove scale, heavy metals, volatile substances and bacteria pollution corpse. After chlorine disinfection of water, it can kill viruses, bacteria, but can not remove the scale, heavy metals, volatile substances, and the bodies of viruses and bacteria still exists, and after chlorine virus, there will be residual chlorine present in the water. Long-distance transport of water through the pipe after, vulnerable to secondary pollution, rust, sediment, bacteria, etc. will impact on the quality of tap water again, especially for high-rise residential, the secondary pressure because you want to, so the roof is generally There are tanks which make household tap water is contaminated sediment, rust, bacteria and the like. So basically I would choose to boil water to drink, but to boil only solve the problem of bacteria, can not solve the sediment, rust, scale, heavy metals, volatile substances and bacteria corpses and other issues, so just boil drinking water quality is not It will be fundamentally improved. 2. Bottled drinking water access, high costs, short validity period, more susceptible to secondary pollution. Bottled water bucket was about seven - ten dollars, higher costs, and this mostly water purifier or water with a large machining water, there is little natural well water available. Meanwhile Bottled water storage time is short, perishable, after connection with water dispenser in the open state, it would be contaminants in the air, drinking water and therefore is not an ideal solution. 3, the high cost of bottled water is not suitable for everyday family use. Bottled water by a few rich families as daily water, but this method is too costly, and the results may not be as water purifiers. 4, use a water filter can effectively filter all kinds of pollutants, to drink standards, and relatively low cost. Water purifier is purely physical filtration methods can effectively remove all kinds of contaminants, such as bacteria, chlorine, heavy metals, scale (calcium and magnesium), volatile substances, rust, sand, etc., and the cost is relatively bottled water it is much lower, the water taste good, can drink without boiling, it is the ideal home drinking water solutions. Second, how ultrafiltration membrane and activated carbon water purifier water purifier works are fundamental. Water purification through many stages of development experience, of which there are physical methods, there are chemical methods. But the development to the present day, household water purification equipment, basically use the same principle: ultrafiltration technology. This technique is extremely micron pore size filter membrane to the pore size greater than that to filter out impurities, in order to achieve water purification. This technology is currently in effect for household water purification technology and cost the best technology. Ultrafiltration membrane pore size minimum to 1 nanometer (ie 0.001 micron pore size if another small, less than 1 nm, that is, the reverse osmosis membrane, that is used to produce pure water, and that is in addition to water molecules, and then does not contain any other substance) and almost all bacteria are greater than 100 nm (0.1 micron), therefore ultrafiltration membrane can filter out bacteria, and their bodies will not leave, and calcium, magnesium, potassium and other useful minerals less than 10 nanometers in diameter, and just by ultrafiltration membrane. Water is water, so the water contains the right amount of health beneficial minerals, so now both at home and abroad, almost all manufacturers are using an ultrafiltration membrane water purification to the production of household water purifiers (remember that not pure water, pure water is use of reverse osmosis technology). Ultrafiltration is what made it? The main chemical compounds, commonly used PVC film, PAN film, PVDF film variety. PVC film is that we are familiar with the plastic film, and this film is currently in the domestic water purifier used widely, is a more mature technology, but PVC material itself smell (the smell to know), Application the water purifier will filter out of the water taste bad and can not be removed after heating, is only one solution, that is, after the PVC membrane activated carbon to absorb odors, increase the taste. The PAN and PVDF membrane film itself has no odor, PVC membranes with respect to some of the more desirable. If ultrafiltration membrane acts as a filter bacteria, rust, sediment and other macromolecules, then activated carbon is used to adsorb magic heavy metals, chlorine, volatile organic compounds and other pollutants in the. Most people should have recognized that the activated carbon, which is sintered coconut shell charcoal and other plants, large pores, adsorption strong, now back home decoration choose to use charcoal to absorb odors and volatile poisons renovated. Activated carbon and low cost, with high technology to its powdered, adsorbed greatly increased surface area, in order to fully achieve the best results in contact with the water absorption, even increasing the amount, nor will cost water purifier has improved significantly . However, the activated carbon has a drawback, that is, after a certain amount of adsorbed impurities will lose activity, which must be periodically replaced. Some domestic water purifier manufacturers, in order to avoid frequent replacement carbon filter and the increased cost to the consumer, uses a new material to replace the activated carbon adsorption, which is the KDF. The so-called KDF, is a small ball of copper and zinc alloy, this little ball in after contact with water to form primary batteries, copper cathode, zinc as the anode, and thus play a role in the adsorption of heavy metals. Because this primary batteries relatively longer life of activated carbon, and after washing can be partially removing impurities adsorbed on the surface, so many manufacturers are using to replace the activated carbon, thereby extending the life of water purifier filter. This is called the past few years do not change the core of the product. But there are several problems KDF adsorption. The first is security, although the United States has been identified as the KDF water purification equipment standard materials, but because of the use of the chemical methods KDF adsorption of heavy metal, so its safety is still controversial. Second is the cost, KDF alloy copper and zinc and other raw materials, high cost, if you want to achieve full integration with the purpose of water (in order to adsorb clean), you must use a lot of KDF can do, but it will make the water purifier The costs soared, not suitable for home use; if KDF small amount, and water can not be fully integrated, with great water pressure, flow speed, so do not wait for the formation of primary batteries, water flow has been passed, KDF fundamental no effect, become a decoration. Thus for more advanced water purification products, if the use of KDF, then it must be combined with activated charcoal, so as to assist each other, play a role; if activated carbon technology is more mature, you can abandon the KDF media. While some domestic manufacturers, in order to achieve the purpose for many years does not change the filter, abandon activated carbon, KDF only use materials and product prices relatively low, the water quality to make people suspicious. In addition to an ultrafiltration membrane and activated carbon, but some senior product also add other patented technologies, aimed at heavy metal used to enhance or suppress scale removal. It can be said, no single type water purification products can conquer the world, suitable for all different areas of water quality, water quality should be based on the characteristics of good manufacturers in different places, different structures designed water purification products. If you find a brand of water purifier in the purchase only with an internal structure of the product, but not designed for different regions of different formulations of the product, then it is definitely not a good brand of water purifier. For removal of scale, it is more emphasis on the function of the northern region. Currently the most common method of scale removal is ion exchange. The so-called ion exchange, that is, after contact with water with phosphate (food grade materials), resulting in the replacement of the scale of DI water calcium and magnesium, thereby removing scale. The current product is the use of water softeners this principle. But the water softener can not be directly consumed, because the ion exchange water, sodium ions exceeded, so softened water can only be used for washing, bathing. However, the water purifier to remove scale, not completely remove calcium and magnesium ions, but to a concentration of normal indicators, so it will not cause excessive sodium ions, so for reinforcing cleaning function of water purifier, you do not need harbor doubts. Third, how to buy a water purifier if I carefully read the contents of the above TX, heart should know how to choose a good water purifier. A water purifier water quality should be better use of ultrafiltration membrane and activated carbon, and can be produced in different formulations for different regions of the water purifier water quality. UF itself since the aperture is small, the water flow is not great, it is possible to have patented technology allows large volume of water purifier product is a good product; ultrafiltration membrane pore size itself is blocked impurity, so do not wash, but it can try to extend filter life of the product is a good product. How to make contact with the activated carbon is a technical problem with the water. So many manufacturers design a multi-stage filter, activated carbon can be achieved only the front three, plus an activated carbon post, this four activated carbon is used to full contact address water of. This can only be said to be an awkward, rather than relying solely on the number of technology to solve problems. So they can in as little as possible over the filter, the activated carbon can achieve full contact with water, which in itself is a sign of a good product. Water purifier good or bad, there is a standard, that is the taste. Good water purifiers, water sweet, used to make tea, punch and coffee are called to share, and whether turbidity, color are visually pure pure clean, relaxed and happy. For this reason, many manufacturers choose post-activated carbon to increase the taste, of course, there are many manufacturers by adding silver ions to improve the taste. Dun Dun bad actor, tried eating. Another problem is that different formulations. I said before, none of the water purifier can meet the water quality in all regions. Water can be for different regions, the introduction of different formulations of the manufacturers is the real prospect of the manufacturers. For hard water areas, should have increased cleaning function of water purifier for heavy metals exceeded the area, there should be enhanced in addition to water purifiers lead functions. And although the water itself is a relatively mature technology, but with more patented technology, the more you can explain a water purifier is good or bad. The above four criteria, is to buy a good water purifier necessary.