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Activated Carbon Filter System
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Shaanxi Di Ao Environmental Protection Group Co., Ltd.
Shaanxi, China
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The activated carbon filter pressure vessel is a pressure vessel containing activated carbon. An activated carbon filter works by passing through a carbon bed. The activated carbon particles that make up the carbon bed have numerous micropores, a large specific surface area, and a high physical adsorption capacity. Water travels through the carbon bed, and the activated carbon effectively adsorbs the organic contaminants in the water. Furthermore, certain oxygen-containing functional groups are present on the amorphous region of the activated carbon's surface, allowing the activated carbon to effectively absorb organic contaminants in the water passing through the carbon bed. Activated carbon filters are a prominent type of water treatment equipment. As a pretreatment for water treatment desalination systems, it can effectively extend the service life of the latter-stage equipment, enhance effluent quality, and reduce contamination, particularly for the latter-stage reverse osmosis membrane, ion exchange resin, and other components. Pollution caused by leftover chlorine in its free state. The key parameters influencing the adsorption effect and service life of activated carbon filters are the type and concentration of pollutants, the residence time of airflow in the filter material, and the temperature and humidity of the air. In actual selection, the type of filter and activated carbon should be decided based on parameters such as pollutant type, concentration, and air volume to be treated. A suitable dust filter should be installed both upstream and downstream of the activated carbon filter, with an efficiency criterion of at least F7. The upstream filter keeps dust from clogging the activated carbon material, while the downstream filter prevents dust from being generated by the activated carbon. 
How does it work?
Activated carbon filters use granular activated carbon to remove residual chlorine, organic matter, and suspended pollutants from the mechanical filter's effluent, preparing it for reverse osmosis treatment. The activated carbon filter primarily employs activated carbon organic flocs with high carbon content, big molecular weight, and large specific surface area to physically adsorb pollutants in the water and meet water quality criteria. When water travels through the pores of activated carbon, it picks up suspended particles, organic debris, and so on. At the same time, the chlorine (hypochlorous acid) adsorbed on the activated carbon's surface undergoes a chemical reaction and is reduced to chloride ions, effectively removing chlorine and ensuring that the residual chlorine in the effluent is less than 0.1 ppm, which meets the RO membrane's operating conditions. With time, the retentate in the pores of the activated carbon and between the particles steadily grows, causing the pressure difference between the front and back of the filter to increase until it fails. Under normal conditions, according to the pressure difference between the front and back of the filter, reverse water flow is used to backwash the filter material, so that most of the retentate adsorbed in the pores of the activated carbon is stripped and taken away by the water flow, and the adsorption function is restored; when the activated carbon reaches the saturated adsorption capacity completely When it fails, the activated carbon must be regenerated or replaced to match technical specifications.

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