The difference between straight drinking water and bottled water: straight drinking machines, water purifiers, kitchen water purifiers, filters, water purifiers and other water purification equipment are generally called straight drinking machines in the market at present. How to define a real direct drinking machine? Direct drinking machines cannot be simply defined as simple water purifiers and ground filtration equipment. Many consumers are often confused by various water purifiers and don't know how to choose them correctly. First of all, let's popularize the definition of direct drinking water, hoping to buy direct drinking machines, direct drinking water equipment or household kitchen water purifiers for everyone to sort out their ideas. First, direct drinking water, commonly known as direct drinking water, referred to as direct drinking water. What kinds of water can you drink directly? In the earliest agricultural era without pollution, mountain springs, well water and river water can be directly drunk to quench their thirst. Later, with the progress of social civilization, people learned that boiling raw water can kill microorganisms and other parasites in the water without causing physical discomfort and other symptoms due to poor water quality. With the progress of society, a large number of water sources are polluted, not only the microorganisms exceed the standard, but also many heavy metals and chemicals harmful to human body. It is impossible to completely remove chemical pollutants such as heavy metals only by boiling water. Since the 1980s, bottled water has entered the homes of ordinary people, which can only be used as drinking water. If ordinary consumers such as cooking still use tap water or groundwater to drink, it will leave hidden dangers for drinking water safety. Therefore, all kinds of water purification equipment and water purifiers came into being, which tend to replace bottled water. The classification of direct drinking machines requires understanding of water purification technology. Introduction of purification technology, at present, the four major water filtration technologies in the world are microfiltration, ultrafiltration, sodium filtration and reverse osmosis.
Microfiltration (MF): The filtration accuracy is generally 0. 1-50 microns, like common PP filter elements and ceramic filter elements, which belong to the category of microfiltration. It is used for simple coarse filtration, filtering large-particle impurities such as sediment and rust in water, and cannot remove harmful substances such as bacteria, viruses, organic matter and heavy metal ions in water. It is usually not clean. It is a disposable filter material and needs to be replaced frequently.
Ultrafiltration (UF): The filtration accuracy is 0. 1-0.0 1 micron, which is one of the six high-tech technologies in 2 1 century. It is a membrane separation technology using pressure difference, which can filter out harmful substances such as rust, sediment, colloid, bacteria, virus and macromolecular organic matter, and retain some mineral elements beneficial to human body. It is the core component in the production of mineral water and mountain spring water. The recovery rate of water during ultrafiltration is over 95%. Ultrafiltration can realize flushing and backwashing, and has a long service life. Sodium (NF): The filtration accuracy is between ultrafiltration and reverse osmosis, and the desalination rate is lower than that of reverse osmosis. It is also a membrane separation technology that requires electricity and pressure, and the water recovery rate is low. Generally used for industrial pure water manufacturing. Reverse osmosis (RO): The filtration accuracy is about 0.000 1 micron, which is an ultra-high precision membrane separation technology developed by the United States in the early 1960s using pressure difference. It is generally used to make drinking pure water, industrial ultrapure water and pharmaceutical ultrapure water. Reverse osmosis technology needs pressurization and electrification, and it is also the most widely used technical way to improve the quality of drinking water in the world. At present, only the water purification equipment adopting reverse osmosis technology in China can be regarded as a real direct drinking machine. ?