Activated Carbon Air Filter Design Calculation

Activated carbon also called activated charcoal is a form of carbon processed to have small low volume pores that increase the surface area available for adsorption or chemical reactions.

Activated carbon air filter design calculation.

Activated carbon columns plant design 115 3 2 2. Replacing carbon filters is a costly investment but a monthly replacement schedule is a good starting point. The backwash step does not regenerate the carbon or de adsorb contaminants. Please note that according to the epa gas phase filters like activated carbon cannot readily remove carbon monoxide and employing other important steps like having a carbon monoxide detector must be used to prevent exposure.

Due to its high degree of microporosity one gram of activated carbon has a surface area in excess of 3 000 m 2 32 000 sq ft as determined by gas adsorption. Contact time is defined in minutes and below is the some examples. Firstly it was necessary to estimate some parameters. Activated carbon filter calculation based on ebct value.

When used as pretreatment equipment these filters will prolong the life and efficiency of westech granular activated carbon ion exchange and membrane systems. For chlorine contact time is 2 min. Following the rules mentioned above the value decided was 5 0 cm. The backwash step reclassifies the bed and.

Due to the activated carbon effective size was known the column diameter was the first parameter to be estimated. For voc contact time is 7 min. A freeboard of about 50 percent should be incorporated into the vessel design to allow backwash inplace. A smaller diameter should not be.

Activated carbon filters depending on the type of water suspended solids concentration oil and grease cod bod and pesticides contents activated carbon filters are sized differently but the basic design data to clarify natural waters is the following. Thermal activation of charcoal greatly improves its pore volume surface area and. Granular carbon can be used after conventional filtration of suspended matter or as a combination of filtration adsorption medium. Westech pressure vessels are available in a variety of configurations and designs that can be customized to meet various constraints such as water quality footprint backwash.

Empty bed contact time is calculated as volume of empty bed divide by flow rate. Activated is sometimes substituted with active. The use of granular activated carbon gac for water purification became common around the start of the 20th century 1906 when the activation process was applied to charcoal which had been used for centuries. Otherwise external backwash is required.

Activated carbon beds are filters and need to be backwashed periodically.