Pure water equipment filter material may cause carcinogens to exceed the standard

Arsenic exceeds the standard in purified water equipment. As we all know, inorganic arsenic is a carcinogen. Excessive intake can cause cancer of the skin, cardiovascular, respiratory system and nervous system. The well-known arsenic is a kind of arsenic compound. Although some brands blame this on contamination during transportation and storage, the industry is full of skepticism. Testing technicians from the health department pointed out that the problem of excessive arsenic in water purifiers may mainly lie in the material of the filter head and filter element. The direct drinking water filter element constitutes the core component of the pure water equipment. According to the structure of the filter element, it can be generally divided into RO reverse osmosis water purifier and ultrafiltration membrane water purifier. In the investigation, it was found that although the materials used for the filter elements of the water purifiers in question were different, they all used basic filter materials such as activated carbon and PP cotton, and added a hollow fiber ultrafiltration membrane or KDF (pure copper-zinc alloy) composite. . Experts from the testing agency and relevant industry insiders all believe that among these materials, activated carbon is likely to cause excessive arsenic, because the raw materials or the production process of activated carbon may be contaminated and contain trace amounts of arsenic. In addition, alloy materials may also be the source of excessive arsenic (note: arsenic can be used to make cemented carbide, such as copper containing trace arsenic to prevent dezincification, KDF is pure copper-zinc alloy). Carcinogenic black core is widely used in water purifiers It is understood that the concept of water purification was proposed earlier by the United States, and the advanced technology and excellent production technology of water purifiers are also in the United States. However, during our investigation, we found that the test results of imported water purifiers, including American brands, were not accidental. As the core component of water purifiers, the qualified rate of activated carbon filter elements is generally low. Previously, experts from the Environment Institute of the Chinese Center for Disease Control and Prevention pointed out that according to the institute's hygienic testing data on different types of household water purifiers from 2006 to 2009, the unqualified rate of activated carbon filters was high, and the reasons included solubility Total solids, fluoride, turbidity, aluminum, arsenic index immersion test failed, etc. It is the use of these carcinogenic black cores that has laid the groundwork for water purifiers. Residual substances in the purifier can cause secondary pollution of water. There is a misunderstanding in the water purifier industry, that is, only the detection of the filtered and purified water at that time, but in fact, after the water passes through the purifier, a large amount of harmful substances will remain in the water. In the purifier, this will cause secondary pollution of the water. At present, there is no specific test for whether there is secondary pollution in the purifier. In addition to household water purifiers, many communities now have so-called water vending machines. A dollar a barrel seems cheap. But it is actually a water purifier that is a little bigger than a home water purifier. Its design and function are no different from household water purifiers, and it also faces problems such as filter elements and secondary pollution. Correct understanding of water purifiers. Professor Li Fuxing, a well-known nutrition expert and drinking water expert in China, pointed out that there are two most fundamental standards for truly healthy water on the basis of no pollution: one is natural weak alkalinity, and the other is that the water must contain a variety of minerals. substances and trace elements. In the process of filtering and purifying water, although the water purifier filters some suspended solids, it also filters out some minerals and trace elements necessary for the human body in the water. Moreover, this purification and filtration will turn the water that was originally neutral or weakly alkaline into acidic water, which is similar to the PH value of pure water.
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