First, the principle of activated carbon filter
Activated carbon is a very fine carbon particle with a large microporous unit area. Usually we call it a capillary hole. This capillary has a strong adsorption capacity, and the carbon particles have a large surface area and are in sufficient contact with impurities in the water. These impurities can be adsorbed in the micropores, thereby removing impurities such as colloids in the water. Activated carbon can also adsorb CL ions and ozone in water, and has certain adsorption capacity for organic substances in water. It can obviously adsorb pigments in water. In the water treatment industry, we generally require iodine value of 700mg or more. Strong.
Second, activated carbon filter production structure
Activated carbon filter is generally made of stainless steel 304 material, carbon steel material, because activated carbon adsorbs CL and other oxidants, metal ions, bacteria in the micropores and chemical substances, causing corrosion to the tank body, so the activated carbon filter should be lined with rubber to prevent corrosion.
Third, activated carbon filter technical parameters
1, filtration speed: 8-12m3 / h
2, working temperature: normal temperature working pressure
3. Backwashing compressed air volume: 18-25L/m2.S
4, the filter layer height: 1000-1200mm expansion rate of 50%
5, backwashing strength: 9-15L/m2.S
6, backwashing time: 4-6 minutes
Fourth, the working mode of activated carbon filter device:
I Water collection: Raw water flows from above the activated carbon tower tank and flows out under the activated carbon filter device to obtain water quality such as impurities and odor.
II Backwash: The purpose is to expel the deposit above the activated carbon. After a period of filtration, a number of impurities are deposited on top of the activated carbon and removed.
III sinking: The activated carbon will float when backwashing, and all the valves will be closed after the backwashing is completed to cause the activated carbon to sink due to gravity.
IV Washing: In the backwash, there is fear that impurities will be attached to the activated carbon and washed with positive washing to avoid contamination of the water during water harvesting.
The working mode of activated carbon is to operate in the above five steps. However, there are certain differences in the timing of each step.
Five, the working principle of activated carbon filter introduction:
The principle of adsorption of activated carbon is: a balanced surface concentration is formed on the surface of the particles, and the impurities of the organic substances are adsorbed into the activated carbon particles, and the initial adsorption effect is high. However, after a long period of time, the adsorption capacity of activated carbon will be weakened to varying degrees, and the adsorption effect will also decrease. If the water in the aquarium is turbid and the organic content in the water is high, the activated carbon will soon lose its filtering function. Therefore, activated carbon should be cleaned or replaced regularly.
The size of the activated carbon particles also has an effect on the adsorption capacity. In general, the smaller the activated carbon particles, the larger the filtration area. Therefore, the powdered activated carbon has the largest total area and the best adsorption effect, but the powdered activated carbon easily flows into the aquarium with water, which is difficult to control and is rarely used. Granular activated carbon is not easy to flow due to particle formation, and impurities such as organic matter in water are not easily blocked in the activated carbon filter layer, and its adsorption capacity is strong, and it is convenient to carry and replace.
The adsorption capacity of activated carbon is proportional to the time of contact with water. The longer the contact time, the better the water quality after filtration. Note: The filtered water should flow out of the filter layer slowly. The new activated carbon should be cleaned before the first use, otherwise black ink will flow out. Before the activated carbon is installed in the filter, it should be spread with 2~3 cm thick sponge at the bottom and top to prevent the penetration of large particles such as algae. After 2~3 months of activated carbon, if the filtration effect is reduced, it should be exchanged. New activated carbon and sponge layers should be replaced regularly.
The activated carbon filter pressure vessel is a pressure vessel filled with a thick quartz sand cushion and high quality activated carbon.
Function: In the water quality pretreatment system, the activated carbon filter can absorb the residual chlorine that cannot be removed in the pre-stage filtration to prevent the reverse osmosis membrane from being oxidatively degraded, and also adsorbs pollutants such as small molecules and organic substances leaking from the previous stage. It has obvious adsorption and removal effects on odor, colloid and pigment, heavy metal ions and COD in water. The SDI value of the RO influent can be further reduced to ensure SDI < 5 and TOC < 2. Oppm.
The work of the activated carbon filter is done through a carbon bed. The activated carbon particles constituting the carbon bed have a large number of micropores and a large specific surface area, and have a strong physical adsorption capacity. The water passes through the carbon bed, and the organic pollutants in the water are effectively adsorbed by the activated carbon. In addition, some non-crystalline part of the activated carbon surface has some oxygen-containing tube energy groups, so that the organic pollutants in the water passing through the carbon bed are effectively adsorbed by the activated carbon. Activated carbon filter is a commonly used water treatment equipment. As a pretreatment of water treatment desalination system, it can effectively guarantee the service life of the latter equipment, improve the quality of the effluent water, prevent pollution, especially prevent the reverse osmosis membrane, ion exchange resin, etc. Free state residual oxygen poisoning.
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Aluminium alloy 1050 is a popular grade of aluminium for general sheet metal work where moderate strength is required.
Alloy 1050 is known for its excellent corrosion resistance, high ductility and highly reflective finish.
1100 aluminum is the most commercially pure alloy of all the aluminum grades. 1100 is a low strength aluminum alloy with excellent corrosion resistance. This grade is best used for welding, brazing and soldering but has poor machinability. With a great finishing capability, it is a great choice for decorative purposes.
1060 aluminium is relatively low strength, essentially pure aluminium alloy with many different tempers, such as O (annealed), H12, H14, H16, H18, etc. Containing the similar aluminum with 1050, so 1060 is also used for the similar area like building, decorative, kitchenware etc.
1050/1060/1100 Aluminum Sheet
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