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EspañolAt present, the water purifier is an essential appliance for purifying household water. It can improve the water quality and ensure the health of people using water. Now it has become a popular necessity. Ultrafiltration water purifiers and reverse osmosis water purifiers are the most common water purifiers on the market, so which one is better?
The difference between reverse osmosis and ultrafiltration
The reverse osmosis water purifier uses reverse osmosis membrane technology. Its working principle is to apply a certain pressure to the water so that water molecules and ionic mineral elements can pass through the reverse osmosis membrane to isolate most of the inorganic salts dissolved in the water. There are heavy metals and germs, etc., so as to achieve the separation of pure water and harmful water.
Ultrafiltration water purifier adopts ultrafiltration membrane technology. Ultrafiltration is a sieving process in which the pressure difference from both sides of the membrane is the driving force. The ultrafiltration membrane is used as the filter medium. When water flows through the surface of the membrane under a certain pressure, the densely densely packed micropores on the surface of the ultrafiltration membrane only allow water and small molecules to pass through and become permeate, which is larger than the membrane. The microporous material on the surface will be intercepted and become a concentrated liquid, thereby achieving the purpose of purification and separation of the raw water.
1. The advantages and disadvantages of reverse osmosis water purifiers
Advantages: The reverse osmosis water purifier can remove all kinds of harmful impurities in the water, and the taste of the water is better, which can effectively reduce the hardness of the water, and the container after boiling does not produce scale.
Disadvantages: The reverse osmosis water purifier needs a water pump, it needs to be powered on, there is waste water, and the price is relatively high compared to the ultrafiltration water purifier.
2. Advantages and disadvantages of ultrafiltration water purifier
Advantages: Ultrafiltration water purifiers usually do not require pumps, no waste water, and do not consume electricity. Generally, the normal water pressure of municipal tap water is sufficient. It can retain minerals and trace elements in the water.
Disadvantages: Ultrafiltration water purifiers are not as effective as pure water machines in removing chemical pollutants and scale in the water, and the taste is average.
Both types of water purifiers have their own advantages and disadvantages, and none of them is absolutely strong. The use of the water purifier depends on the local water quality to determine the water purifier used. For water sources with good water quality, such as municipal tap water, ultrafiltration water purifiers can meet the needs of daily life. For industrial pollution, areas where water quality is difficult to guarantee can use reverse osmosis water purifiers.
