How to choose water purifier? What indicators?

 一、Choose and buy a household water purifier to see their own home water quality

Water quality in each place is different, so when consumers buy a water purifier, they should know their local water quality in advance, so as to make a more targeted choice.  

In the north of China high hardness water and limestone areas in the south, the water calcium, magnesium ion content is high, easy to scale, should choose advanced filter water purifier with ion exchange resin filter element.  

In the city, the water contains chlorine, the heterochromatic odor is heavier, the organic content is more, can choose the household water purifier with more activated carbon load.  Because the activated carbon has a strong adsorption effect on the residual chlorine and heterochromatic odor in the water, it has an obvious removal effect on organic matter.  

For urban and rural water quality more turbid tap water purification, should choose and buy a coarse filter, fine filter dual function of the household water purifier.  

二、Choose and buy a household water purifier to see sanitary approval

If you choose a water purifier, you must choose a product with sanitary approval.  

三、Choose a household water purifier to see the filtration mode

Filter way of filtering is a water filter can achieve the effect of the standard, all kinds of harmful substances such as chemicals, the peculiar smell in the water, chlorine, chloramine, bacteria, spores, cysts, scale, impurities, such as mercury, lead, mercury, pollutants, if the filter is not complete, so these pollutants will be referenced, so whether filter thoroughly is very important.  

Currently, there are five filtering methods:  

1, granular activated carbon filter: can remove the water residual chlorine, chloroform, bleach, pesticides, and other chemicals and different color odor.  

2. PP cotton filter element: its function is to filter iron, silt, hair, sand, floating objects, etc. It is generally used as the primary filter element of a water purifier, so its life is relatively short.  

3, ultrafiltration membrane filter element: can remove the water bacteria, colloid, organic matter, virus, and other impurities greater than 0.01 micron, ensure the safety of the water.  

4. Post-activated carbon composite filter: the post-activated carbon is made of food-grade coconut shell material, which has a better adsorption effect. The nano-whisker of aerospace material is added, and the antibacterial effect is efficient and lasting.  The last pass in good drinking water.  

5, RO reverse osmosis filter element: the use of reverse osmosis principle will be the water salts, heavy metals, microorganisms, and other harmful to human body pollutants and pure water separation.  

If it's reverse osmosis, it depends on the wastewater ratio  

The proportion of pure wastewater is mainly in the aspect of pure water machines, and the current national requirement is not more than 1:2.3.  A cup of pure water, the discharge of wastewater can not exceed 2.3 cups, but most of the manufacturers in 1:3, or even higher, resulting in an unnecessary increase in the water bill at home.