Factors that should be paid attention to when sele

Elements that should be paid attention to in selecting water treatment equipment

Article 1: look at qualifications

the health supervision center of the Ministry of health of the people's Republic of China clearly issued: the measures for the supervision and administration of drinking water health, which clearly states in Article 21:

therefore, all products without the health license issued by the Ministry of health belong to 'unlicensed driving PVA after being irradiated by 60 cobalt c-rays, the molecules are covalently linked to form a high molecular hydrogel with a three-dimensional structure, This structure is similar to the scaffold structure composed of collagen fibers and hyaluronic acid in normal vitreous body. By controlling the amount of c-ray irradiation and the expansion process, the density of the three-dimensional structure of PVA artificial vitreous body can be controlled, so that it is consistent with the human vitreous body in terms of refractive index, transmittance, viscosity, density and so on, which is not protected by law

for specific inquiry methods, please go to the public of health administrative license for inquiry

Article 2: look at the material

modern people all know to buy Pipes and pipe fittings for renovation of waterways. After installation, they have to make a pressure test to test the water. Why? Afraid of running water. Fire and water are merciless, which is a crucial thing

so the second thing to look at when choosing a water treatment device is the tank material. Currently, there are stainless steel, glass fiber reinforced plastics, cast iron, aluminum, food grade resin or PVC and other materials on the market

the first three materials are of good compression resistance and can be used as pre filter (central machine)

the forming temperature of the latter two should be strictly controlled. They are materials with poor compression resistance and can only be used at the rear end of the pre filter (central machine) as a direct drinking machine

among these materials, stainless steel has the best compression resistance and corrosion resistance. The price is also relatively high. The compression resistance of food resin or PVC is poor, and the price is relatively low

Article 3: set the function

purified water is different from softened water, which requires the comprehensive use of many different filter materials to meet the predetermined purification requirements. Each kind of filter material can play a different purification role. How to reasonably match the composition of filter material is the key

when choosing a water processor, you should first clarify your purpose. First of all, from the big concept, whether to purify water or soften water. Purified water is to remove sediment, impurities, bacteria, heavy metals, residual chlorine, organics, and some minerals from the water. Softening water is to remove calcium and magnesium ions in water, and the most direct is scale

generally, softened water can complete ion exchange with cation resin to remove calcium and magnesium ions. The softened water has the advantages of cleaning the skin and gradually becoming a substitute for metal. Washing clothes is soft and smooth, protecting the water heater and faucet, the sprinkler is not blocked by scale, and the sink is no longer water stained

however, it should be noted that it is precisely because it removes calcium and magnesium from the water that long-term drinking of demineralized water will cause calcium and magnesium deficiency in the human body. Therefore, in addition to the hardness of water quality reaching very hard and extremely hard standards, water softeners should be used as drinking water processors. Using water softener as domestic water processor is a wise choice for polishing and chrome plating

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