Does a water purifier work? What exactly does it purify?

Now the food safety issues are endless, even drinking water is not reassuring, so many people will choose to use the water purifier to purify tap water again, but the market water purifier brands, types of more than dazzling price also varies greatly, consumers not only question: these water purifiers really useful? Here is a look at the details.

Even if the water source is pure water, from the water source to the home faucet, not to mention the pollution of high-rise buildings and underground cisterns, there are several kinds of pollution is bound to exist:

1. Rust

Water is transported by galvanized iron pipes, water and iron oxidation occurs, generating red iron oxide, and further oxidation will generate black iron trioxide. Pipes in new buildings are more susceptible to oxidation. Almost all people have this experience, every morning for the first time to open the faucet, out of the water red material that is rust. Iron is an essential element of the human body, but as one of the indicators of drinking water, the iron content per liter of water shall not exceed 0.3 mg. If the naked eye can distinguish the color of rust in the water, or can taste the taste of rust, then the iron content in the water is greatly exceeded, the iron content exceeds the standard, not only the view, poor taste, long-term drinking, will aggravate the burden on the kidneys, resulting in disorders of the endocrine system, hypertension and other diseases.

2. Lead and other heavy metals

water in the delivery process will also have a lot of heavy metals such as lead dissolved into the water. Long-term drinking will aggravate the burden on the human liver and kidneys, and easily cause liver, kidney, heart and nervous system diseases.

3. Chlorine

Chlorine is a strong oxidizing agent with pungent odor and taste odor. Chlorine is widely used internationally as a disinfectant for tap water. Residual chlorine is the amount of chlorine remaining in the water after a certain period of exposure to chlorine disinfection. According to international requirements, the safe amount of residual chlorine for the end of the pipe network (home tap) should be maintained at 0.05 mg / liter of water, in order to control the growth of bacteria in the delivery process, so the city for the tap water contain residual chlorine.

4. Bacteria

Whether surface water or groundwater as a source of water, bacteria and E. coli in tap water can be said to be ubiquitous. Water is the source of life. Water contains nutrients, and water has a relative thermal stability, thus providing a perfect environment for all types of bacteria to grow and reproduce. Even if water contains very small amounts of nutrients, bacteria and viruses will survive and thrive. All people are aware of the harmful effects of bacteria and viruses.

Household water purifier is essentially a miniaturization of the depth treatment of feed water, and its main treatment object is the turbidity, color, odor and organic matter in tap water. It is generally by the pre-filtration (coarse filtration), adsorption, fine filtration (microfiltration, more than filtration, reverse osmosis) and other three parts. Among them, adsorption (usually using activated carbon adsorption) and fine filtration is the main means of removing organic matter in water, foreign smell and chromaticity, and the objective existence of the operation of the water purifier directly affects the quality of the effluent water. Household water purifier service object is thousands of households, but due to the use of regional water quality, water pressure conditions vary greatly, the user and the lack of necessary operational knowledge, and the current product design can not cope with the ever-changing situation, so the installer should have a certain amount of professional knowledge, standardized installation and operation of water purifiers, so that the quality of the effluent water to achieve the desired results, so that the user can rest assured.

Water purifier is useful

Water purifier, is able to remove the suspended solids in the water as well as harmful organic compounds, inorganic compounds, heavy metals, bacteria, to retain the elements and minerals needed by the human body products. After the water purifier treatment of water, although the surface and the original water is not different, but the water quality has been significantly changed.

The working principle of the water purifier is through a variety of cartridges, the water layer by layer purification, to remove impurities. Water purifier cartridge mainly includes granular activated carbon cartridge, reverse osmosis cartridge and post activated carbon filter. Better material cartridge can not only remove sediment, rust, bacteria, suspended solids and other impurities in the water, remove the odor in the water, but also able to remove calcium, magnesium and other metal ions and radioactive substances in the water, completely purify and soften the water. Poor material cartridge purification effect is very general. The water purification effect of the water purifier also depends on the quality of the water purifier itself.