1. Is it necessary to install a water purifier?
Regarding whether to install a household water purifier, experts said that they should choose it according to the actual situation and their own needs. If the tap water quality test results are good, there is no need to install it. Generally speaking, the initial purification effect of household water purifier is obvious, but with the passage of time, impurities are deposited in the filter element, and the purification effect will drop rapidly. "It is best to change the filter element of the water purifier in ordinary families once every two or three months. We don't recommend drinking pure water directly, or it is safer to boil water after filtering. "
Experts suggest that if citizens need to buy water purifiers, they must look at two "certifications", one is the compulsory 3C certification of household appliances, and the other is the hygiene license. When buying, it is best to go to regular shopping malls, shops and specialty stores to choose.
2. Which brand of water purifier is good?
I. Enmet, Germany
Germany Enmet is one of the world-renowned manufacturers of water treatment equipment. Enmet is a member of German Water Quality Association (DWA), and its products have been certified by DNGW in Germany. It has a long history and environmental protection technology is in the leading position in the world. In the pre-filter, water purifier, water softener, direct drinking machine and other products, the professionalism made in Germany is not only reflected in the technical content, but also in the improvement of quality.
Enmet is committed to developing technologies to eliminate water pollution and purify water, and to provide the most economical and environmentally friendly system solutions for household users all over the world. Enmet pre-filtration adopts 360-degree backwashing technology, backwashing the filter screen from the inside out, and vigorously washing impurities from all angles, which is cleaner and more thorough than the direct flushing technology adopted by general water purifiers.
Second, royal doulton, England.
Royal doulton water purifier in England is the originator of water purifier industry, which originated in Lindbergh County 200 years ago. From a small factory on the Thames, Dalton has become the most trusted brand of water purifier in the world. Dalton, who has 180 years experience in manufacturing water filters, enjoys a high reputation all over the world. The absolute filtration rate of the filter element is 99.99%, and the silica ceramic outer liner contains more silver to prevent bacteria from breeding. The solid structure of ceramics absolutely prevents silver from falling off and dissolving into water. The filtered water is pure and can be drunk directly without boiling.
Third, angels
Shenzhen Angel Industry Co., Ltd. was established in 1996. Since the establishment of 18 years ago, it has been focusing on the field of water treatment, integrating R&D, production, sales and service, and has now become the most competitive leading enterprise of water purifiers in China. The company's Anzhixing brand is one of the top ten brands in the water purification industry in China.
Four. Ai Keli
Ai Keli has advanced water purification technology from Germany, providing high-quality water purification products to customers all over the world, and customizing professional and reasonable water purification service solutions to meet the water purification needs of different people, families and enterprises. The professional international R&D team provides Ai Keli with all-round technical support, perfect solutions and more mature business models. While better serving customers, Ai Keli pays more attention to reasonably saving customers' budgets and providing long-term, stable and high-quality services.
Five, Qinyuan
Over the past ten years, Qinyuan Group, as one of the leading enterprises in China's water treatment technology, has successively won hundreds of patents at home and abroad, and won national awards such as "Second Prize of National Scientific and Technological Progress" (the first completed unit), "China Standard Innovation Contribution Award" and "China Patent Excellence Award". It has successively undertaken national high-tech research and development plan (863 plan), key projects of national torch plan, national key new products, national key industry revitalization and technological transformation projects.
3. Advantages and disadvantages analysis of water purifier equipment
First, the cheapest water purification equipment, faucet water purifier
The cheapest is the faucet water purifier. There are thousands of people who buy a faucet water purifier for 28 yuan. As can be seen from the product introduction, this faucet water purifier claims to be able to quickly remove residual chlorine, odor, absorb heavy metals, filter sediment, suspended colloid and so on. For such a cheap water purification equipment, the evaluation is also mixed. Some people say yes, others think it has no effect at all.
Smayne water purification experts said that the faucet water purifier, as its name implies, is a miniature water purification device directly installed on the household faucet. The filter element of this faucet water purifier is generally produced by patented technology of porous inorganic microfiltration filter element, which is made of pure natural diatomite and sintered at high temperature. The surface of the filter element can be washed repeatedly, which can effectively filter out suspended pollutants such as parasites and silt in water, and remove bacteria, algae, residual chlorine and harmful dissolved heavy metal ions in water.
Disadvantages: The water filtered by this faucet water purifier can not be directly drunk, and it is mainly used for various water needs of ordinary families. People can only drink the filtered water after boiling.
Second, the purest way to purify water.
(1) reverse osmosis technology
In the current publicity of water purification equipment, RO reverse osmosis technology is often talked about by merchants, but consumers are most puzzled. Reverse osmosis is the process of exerting pressure on the concentrated solution in contact with semi-permeable membrane, which is opposite to natural osmosis. RO reverse osmosis is called the purest purification method, and its purification result is close to "distilled water", that is, pure water. The pore size of RO membrane is 0.008-0.0 1 micron, which is more than 0/00 times that of ultrafiltration membrane.
The pore size of RO reverse osmosis filter membrane is too small, so the pressure of tap water can't "pass through", so RO reverse osmosis water purifier must go through the pressurization process, which requires the use of supercharger, which is another energy consumption-electric energy.
Disadvantages: RO reverse osmosis water purifier not only produces clean water, but also produces a lot of "wastewater". Because these "wastewater" can not be used reasonably, they are discharged directly in vain, which leads to great waste of tap water.
(2) Activated carbon filter element
When it comes to activated carbon, everyone will be familiar with it. Activated carbon has strong adsorption, so it has become the most widely used material in air purifiers and water purifiers. Activated carbon for water purification is generally columnar particles with large surface area, developed micropores, high mechanical strength, fast adsorption speed, high purification degree and long service life. Due to the advantages of low price and good adsorption effect, all the water purification equipment currently sold will have activated carbon filter elements.
The activated carbon of water purifier mostly takes coconut shell as raw material. The product has the advantages of developed pore structure, high strength, low impurity content, suitable particle size, low resistance and easy regeneration, and has excellent water purification effect. The most advanced water purification method
(3) Ultrafiltration membrane technology
Ultrafiltration membrane is the most advanced water purification method at present, which can effectively purify pollutants in water without electricity and waste water. Ultrafiltration membrane is a microporous membrane with uniform pore size, and the rated pore size range is 0.0 1-0.2 micron. Ultrafiltration membranes are mostly made of cellulose acetate or polymer materials with similar properties. Ultrafiltration membrane is a kind of porous membrane with super "sieving" separation function. Its aperture is only a few nanometers to dozens of nanometers, which means that it is only 1% of a hair. ! When proper pressure is applied to one side of the membrane, solute molecules larger than the pore size can be screened out, and particles with molecular weight larger than 500 daltons and particle size larger than 2-20 nanometers can be separated.
Disadvantages: calcium and magnesium ions (water alkali) in water can not be removed, and the effect will be better when used with a water softener.
Third, the most popular price range.
Knowing these basic knowledge about water purifiers, you won't be confused when you enter the store. In stores, the price of common household water purifiers is around 1000-8,000 yuan, and the price of hot-selling models is around 3,000 yuan.
Through the introduction of the sales staff in the store, we can also find that the price depends on the pore size of the filter material of the water purifier-the smaller the pore size, the cleaner the filtered water.
The filtration levels of water purifiers sold in stores are generally four-stage filtration and five-stage filtration, but the higher the filtration level, the better, but it depends on the filtration pore size range of the filter element. In addition, the amount of water purifier materials is also an important reason for the price difference of water purifiers.
Take the cheapest faucet water purifier as an example, the filter material used is relatively simple, the product accessories are few and the natural price is not high. In contrast, the professional water purification equipment of 10,000 yuan class inevitably has a larger filter element, a more complicated filtration system, many supporting fittings and high cost. Consumers should consider the brand, material, technology, filtering materials and after-sales service when choosing a water purifier. High-end water purification equipment not only provides customers with a complete drinking water scheme, but also a complete water purification system, including all-round use needs such as drinking and cleaning.