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Some Key Points About Activated Carbon Filters
Release Date:
2021-03-29
Introduction to the role of activated carbon filters in water treatment systems: Activated carbon filters are a commonly used piece of water treatment equipment. As a pre-treatment step in desalination systems, they can adsorb residual chlorine that cannot be removed by the preceding filtration stage, thereby effectively extending the service life of downstream equipment, improving effluent water quality, and preventing contamination—particularly free-radical oxygen-induced poisoning of downstream reverse osmosis membranes and ion-exchange resins. In addition, these filters adsorb trace organic compounds and other contaminants that may have leaked from the previous stage, exhibiting significant adsorption and removal performance for odors, colloids, colorants, heavy-metal ions, and other impurities in the water, while also reducing COD levels.
Introduction to the role of activated carbon filters in water treatment systems: Activated carbon filters are a commonly used piece of water treatment equipment. As a pre-treatment step in desalination systems, they can adsorb residual chlorine that cannot be removed by the preceding filtration stage, thereby effectively extending the service life of downstream equipment, improving effluent water quality, and preventing contamination—particularly free-oxygen-induced poisoning of downstream reverse osmosis membranes and ion-exchange resins. In addition, these filters adsorb trace organic compounds and other contaminants that may have leaked from the previous stage, exhibiting a significant adsorption and removal effect on odors, colloids, colorants, heavy-metal ions, and other impurities in the water, while also reducing Cash on Delivery the role of.
Activated carbon filters can remove discolored and odorous impurities as well as heavy metals such as mercury, lead, cadmium, zinc, iron, manganese, and chromium from potable water. They also effectively eliminate high-molecular-weight compounds like arsenic, hydrides, sulfides, and residual chlorine, along with radioactive substances such as strontium and radium. Furthermore, these filters can remove and inactivate bacteria, including Escherichia coli, which are known carcinogens. As a result, they are an ideal water purification solution for industries such as drinking water production, food processing, beverage manufacturing, pharmaceuticals, and chemicals. Activated carbon filters feature a simple design and are easy to operate and maintain. They are suitable for enterprises and institutions in the food, beverage, and chemical sectors that have stringent water-quality requirements, and can also be deployed in hotels, military facilities, railway stations, and ports as water-supply equipment for both industrial and domestic use.
The filter media in the activated carbon filter adsorber can be packed to a bottom height of 0.15~0.4 Rice-sized quartz sand. As a support layer, the quartz sand particles can be 20-40 Millimeters, quartz sand can fill a height of 1.0–1.5 Granular activated carbon made from rice is used as the filtration layer. The typical packaging thickness is 1000-2000 Millimeters.
Before loading the activated carbon filter, the solution stability of the quartz sand at the bottom of the filter media should be tested. Soaking 24 After one hour, the following requirements must be met: the total increase in solid substances shall not exceed 20 mg/L , the increase in oxygen consumption does not exceed 10 mg/l , after soaking in an alkaline medium, the increase in silicon dioxide does not exceed 10 mg/L 。
After the quartz sand for the activated carbon filter is loaded into the equipment, it must be thoroughly rinsed. The water flow should be directed from top to bottom during rinsing, with the dirty water discharged from bottom to top, until the effluent becomes clear. Subsequently, the granular activated carbon media should be added and rinsed again, with the water flow directed from bottom to top and the dirty water discharged from top to bottom. The primary factors influencing the adsorption performance and service life of the activated carbon filter include the type and concentration of contaminants, the residence time of the gas stream within the media bed, and the temperature and humidity of the air.
Keywords:
Activated carbon filter, filter screen
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