Activated carbon filter working principle (the role of activated carbon filter)

Activated carbon is widely used in our life, and its good adsorption ability is very popular.Activated Carbon FilterIt is a kind of tank filtration apparatus, the outside is usually made of fiberglass, and the inside is filled with activated carbon, which can filter microorganisms and some heavy metal ions in the water, and can reduce the color of the water. Then this kind ofActivated Carbon FilterHow does it work?

The principle of adsorption of activated carbon is that an equilibrium surface concentration is formed on the surface of its particles. 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 total area of powdered activated carbon is the largest, and the adsorption effect is the best, but powdered activated carbon is easy to flow into the tank with the water, which is difficult to control and rarely used. Granular activated carbon due to particle molding is not easy to flow, organic matter in the water and other impurities in the activated carbon filtration layer is not easy to block, its adsorption capacity is strong, easy to carry and replace.

The adsorption capacity of activated carbon is directly proportional to the contact time with water, the longer the contact time, the better the quality of filtered water. Note: The filtered water should flow out of the filter layer slowly. New activated carbon should be washed and cleaned before the first use, otherwise there will be ink-black water flowing out. Activated carbon in the filter before loading, should be in the bottom and the top of the sponge with a thickness of 2 to 3 cm, the role is to prevent algae and other large particles of impurities to penetrate into the activated carbon after 2 to 3 months, if the filtering effect declines should be replaced with new activated carbon, sponge layer should be replaced regularly.

Activated carbon filter adsorber within the filter media, the bottom can be loaded with 0.15-0.4 meters high quartz sand suction, as a support layer, quartz sand particles can be used 20-40 mm, quartz sand can be loaded on the granular activated carbon as a filtration layer of 1.0-1.5 meters. The filling thickness is generally 1000-2000mm.

Activated carbon filter before loading, the bottom filter material quartz sand should be solution stability test, after soaking for 24 hours, in line with the following requirements: the increase of all solids does not exceed 20mg/L. The increase of oxygen consumption does not exceed 10mg/L. After soaking in alkaline media, the increase of silica does not exceed 10mg/L. The increase of silica does not exceed 10mg/L. The increase of silica does not exceed 10mg/L. The increase of silica does not exceed 10mg/L.

Activated carbon filter quartz sand rinsed clean and loaded into the equipment should be carefully cleaned, the water flow should be rinsed from top to bottom, the dirty water discharged from the lower part until the water is clarified, and then loaded into the granular activated carbon filter media, and then cleaned, the water flow rinsed from the bottom to top, the dirty water discharged from the upper part.

The role of activated carbon filter is mainly to remove large molecules of organic matter, iron oxides, residual chlorine. This is because the organic matter, residual chlorine, iron oxides easy to make the ion exchange resin poisoning, and residual chlorine, cationic surfactants, etc. will not only make the resin poisoning, but also destroy the membrane structure, so that the reverse osmosis membrane failure.

Activated carbon filter is widely used in industry, which can not only improve the water quality of the effluent to prevent pollution, especially to prevent free residual oxygen poisoning contamination of the back-stage reverse osmosis membrane, ion exchange resins and so on. Activated carbon filter is not only high efficiency, but also low operating costs, good water quality, good filtration effect.