40% water purifier quality inspection failed

Recently, AQSIQ spotted water purifiers and discovered that 13 companies had problems with their products, and the rate of disqualification was 40%. Some of the water purifier materials may release heavy metals and cause secondary pollution, and the National Health and Family Planning Commission subsequently ordered it not to. Qualified water purification products are removed. The issue of drinking water safety has once again become a hot topic.

Water purifier sales more

A recent survey by reporters found that sales of water purifiers are very hot. In many electrical hypermarkets, the counters that sell water purifiers occupy a prominent position, ranging from seven to eight brands to as many as a dozen brands, with prices ranging from more than one thousand yuan to more than ten thousand yuan. Some brands claim to be imported technology, some claim to be patented products, including nano-film, pure crystal and other technologies, and some even claim to be able to skin care, a variety of terms dazzling. A brand of a water purifier priced at nearly 3000 yuan, the sales staff said that this water purifier is a double water design, while out of clean water, filtered through the 2 filter cartridge, you can remove the sediment and odor in the water, and Can completely retain the minerals in the water, can be used to wash dishes; one side out of pure water, filtered through 4 filter cartridges, completely remove bacteria and viruses in the water and heavy metals, can be directly consumed, or used to cook soup. "This is selling very hot, you can sell more than 10 units per month."

It is understood that currently on the market water purifier used materials are generally PP cotton, activated carbon, reverse osmosis membrane, ultrafiltration membrane and several other. Among them, activated carbon plays a role in adsorbing organic substances such as **** and carbon tetrachloride. If a poor quality activated carbon filter is used, the phenomenon of falling powder will occur and the effect of water purification will be severely reduced. What's more serious is that with raw materials such as activated charcoal with poor quality, the water purifier will not only fail to remove the effect, but may instead precipitate heavy metals and cause secondary pollution.

Filters need to be replaced regularly

Faced with an array of water purifier products, how should consumers buy it?

Wang Jing ** dermatology director Li Guangrui told reporters that at present, the market water purifiers mainly use ultrafiltration, nanofiltration, reverse osmosis and other technologies. Among them, ultrafiltration can filter out harmful substances such as bacteria, rust, and colloids in the water, and retain the original trace elements and minerals in the water. For large cities with good water quality control or well-protected water areas, ultrafiltration water purifiers can meet demand.

The nanofiltration water purifier in addition to softening in drinking water treatment, used for decolorization, removal of natural organic matter and synthetic organic matter (such as pesticides, etc.), to ensure the biological stability of drinking water.

As for the reverse osmosis water purifiers that are currently very hot, the water standards obtained by reverse osmosis filtration are higher, but the minerals in the water are also basically filtered out. If there are other risks such as factory pollution, pesticide and chemical fertilizer pollution, etc. in the tap water source area, or similar areas in northern China where the water quality is hard and calcium and magnesium ions are prone to scale areas, reverse osmosis water purifiers are recommended.

Li Guangru reminded that the use of reverse osmosis water purifiers, in addition to filtering out harmful heavy metals, sodium, magnesium and other beneficial components will be filtered out, so the long-term use of reverse osmosis filtration water, not necessarily beneficial to the body.

Li Guangru also stressed that, regardless of the technology, the water purification effect of the water purifier depends on the membrane used in the filtration. Moreover, the service life of these filter membranes is limited. Replace the filter membranes in time, otherwise the water purification effect will be affected. Under normal circumstances, these membranes should be replaced once a year. If they are not replaced in time, the water will be contaminated again when it is filtered by a purifier.

When choosing a water purifier, consumers should not rely on all kinds of sacred promotion words. Instead, they should look at whether the product has hygiene license approval documents, relevant national production and industrial and commercial registration qualifications, and check whether the brand, specification, model and health approval documents are in agreement. If necessary, check and verify with the China Health Supervision Network. At the same time, try to choose some of the larger regular factory products.