What are the treatment methods of water purifiers?

Water purifiers can be divided into the following 11 categories according to water quality treatment methods.

1. Magnetization refers to the use of magnetic field effect to treat water, which is called magnetization of water. The process of magnetization is that after water passes through the magnet in the direction perpendicular to the magnetic field lines, the magnetization process is completed. The magnetization treatment of water in my country is still in the primary stage of practice and research so far. Foreign water purifiers do not have the requirement of magnetization function, because magnetized water does not belong to the scope of water purification, but belongs to medical problems.

2. Mineralization method refers to adding beneficial mineral elements (such as calcium, zinc, strontium and other elements) to the water on the basis of purification. Its purpose is to exert the health care effect of mineral water. Commercial water purifiers generally achieve the purpose of mineralization by adding medical stone to the water purifier, but the effect of artificial mineralization is still a controversial issue.

3. These aspects of ozone and ultraviolet sterilization can only sterilize, but cannot remove heavy metals and chemical substances in the water. The killed bacteria still remain in the water and become pyrogens.

4. Water rectifier The water rectifier is a newly invented product in Japan. It purifies the water first, and then conducts electrolysis activation. The alkaline activated water corresponds to the pH value of the human body environment, which has a health care effect on the human body and is suitable for Drinking; acid-activated water can be used for face washing, bathing, and has a cosmetic effect. However, there are different views on the water rectification principle of the water rectifier, the water quality of the rectifier and the impact on the human body after use, which needs to be further discussed.

5. Activated carbon adsorption can be divided into the following three forms

  1. Granular activated carbon is more commonly used, and it is mostly made of carbonaceous substances such as essence, coal quality, and nut shell (core) by chemical method or physical activation method. It has a lot of micropores and specific surface area, so it has a strong adsorption capacity and can effectively adsorb organic pollutants in water. In addition, during the activation process, some oxygen-containing functional groups are formed on the amorphous parts of the surface of the activated carbon. These groups enable the activated carbon to have chemical adsorption and catalytic oxidation and reduction properties, and can effectively remove some metal ions in water.
  2. Silver infiltration activated carbon combines activated carbon and silver, which not only has adsorption effect on organic pollutants in water, but also has bactericidal effect, and does not grow bacteria in activated carbon, which solves the problem of nitrite sometimes appearing in the effluent of water purifier. high content. When the water passes through the silver-infiltrated activated carbon, the silver ions will be slowly released to play a role in disinfection and sterilization. Because activated carbon has a good effect on removing color, smell, chlorine, iron, arsenic, mercury, cyanide, phenol, etc. from water, and the sterilization effect is more than 90%, so it is used in small water purifiers.
  3. Fiber activated carbon A new type of adsorption material formed by the activation of organic carbon fibers, with developed microporous structure, huge specific surface area, and numerous functional groups. Remarkable achievements have been made abroad in the use of fiber activated carbon for solvent recovery and gas purification; a lot of research work has also been done in water treatment applications.

6. RO reverse osmosis membrane RO reverse osmosis is a kind of pure water machine that can be directly consumed by human beings without adding any compounds after filtering the raw water (physical method) through the currently popular international reverse osmosis method (also known as Terminal water purification equipment). The municipal tap water whose water quality conforms to the “Hygienic Specifications for Drinking Water Quality” (2001) of the Ministry of Health of China is used as the raw water, and the raw water is pre-treated with 2 activated carbon filters (1 granular activated carbon, 1 sintered activated carbon) and 1 PPF spray filter. Filter, and then apply pressure to the pre-filtered water to make it pass through the RO (reverse osmosis, English Reverse Osmosis) membrane with a pore size of one ten thousandth of a micron, and finally pass through the silver-loaded activated carbon (also known as coconut shell) material. Small T33) to adjust the pH of water (to make the taste of the produced pure water sweet and mellow) to produce pure water.
RO reverse osmosis water purifier, introducing advanced ultra-low pressure reverse osmosis technology and accessories from the United States, produces the most advanced domestic and corporate purified water device. Small area, the most effective removal of calcium, magnesium, bacteria, organic matter, inorganic matter, metal ions and radioactive substances in water, crystal clear, sweet glycol purified by this device. The device is suitable for drinking water in households, hotels, hotels, hospitals and other enterprises and institutions.
The purified water produced by RO reverse osmosis water purifier is fresher, more hygienic and safer than bottled water. It has a wide range of uses: it can be drunk raw or boiled. The most prominent feature in this regard is the kettle or The electric thermos will no longer be scaled; pure water is used for cooking, which is more hygienic and more delicious; bathing with pure water can remove impurities on the skin, moisturize the skin, and have a natural beauty effect; it can be provided to humidifiers, The water required for small appliances such as steam irons and beauty instruments will never appear annoying scale; when used in conjunction with the ice maker, the ice cubes made are crystal clear and free of any peculiar smell.
Reverse osmosis technology: The original text of reverse osmosis is REVERSE OSMOSIS. It is a collection of scientists from NASA from many countries. With the support of the government, it has spent billions of dollars and has been researched for many years. The principle of reverse osmosis is to apply a pressure greater than the natural osmotic pressure on the raw water side, so that the water molecules reverse osmosis from the side with higher concentration to the side with lower concentration. Since the pore size of the reverse osmosis membrane is much smaller than hundreds of times or even thousands of times that of the case virus and bacteria, various viruses, bacteria, heavy metals, solid solubles, polluted organics, calcium and magnesium ions cannot pass through the reverse osmosis membrane at all. , so as to achieve the purpose of water softening and purification.

7. Microfiltration and ultrafiltration Microfiltration is a microporous membrane made of cellulose or polymer materials, and its uniform pore size is used to retain particles, bacteria, colloids, etc. in the water, so that they can be removed without passing through the membrane. This microporous membrane filtration technology, also known as particle density filtration technology, can filter micron or nanometer particles and bacteria. Both ultrafiltration and microfiltration are membrane separation technologies, and there is no obvious boundary between the two. The working pressure of ultrafiltration is generally about 0.3 MPa, which can remove macromolecular substances, bacteria, viruses, etc. in water, but the flux is low .

8. Composite type When one process is difficult to remove harmful substances in water, two or more processes are used to form a composite type. Such as activated carbon adsorption? Ultraviolet sterilization, activated carbon adsorption? Reverse osmosis, activated carbon adsorption? Microfiltration (ultrafiltration), polypropylene microfiber? Among the composite water purifiers, the membrane technology composite water purifier has excellent water purification performance, especially in the removal of microorganisms (bacteria, algae, etc.) It has been welcomed by the majority of consumers and has become a hot spot in the current development of water purifiers.

9. The softening method refers to removing or reducing the hardness of water (mainly calcium and magnesium ions in water) to a certain degree. In the process of softening water, it only softens the water quality, but cannot improve the water quality.

10. Distillation involves boiling water, then collecting the vapor, allowing it to cool and condense into a liquid. Distilled water is extremely safe to drink, but there are some issues to explore further. Since distilled water does not contain minerals, this has become the reason for opponents to propose that human life is easy to age. In addition, the distillation method is costly, consumes energy, and cannot remove volatile substances in water.

11. Boiling method refers to drinking tap water after boiling, which is an ancient method and is widely used in China. Boiling water kills bacteria, but cannot remove some chemicals and heavy metals, even in extremely low levels, so it is still unsafe to drink.

Xi’an CHIWATEC Water Treatment Technology is a high-tech enterprise specialized in various water processing devices. Aside from these individual products, which cover a number of types and series, we can also help with related comprehensive engineering projects. Thanks to our hard work and dedication upon our founding, we are now one of the fastest-developing water treatment equipment manufacturers in Western China.

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