Activated Carbon Filter For Water Treatment

It looks like tiny granules of black sand.

Activated carbon filter for water treatment. As polluted water or air flows through an activated carbon filter chemicals sorb or stick to the surface and within the pores of the granules. Eliminating organics in potable water such as humic and fulvic acid prevents chlorine in the water from chemically reacting with the acids and forming trihalomethanes a. A filter with granular activated carbon gac is a proven option to remove certain chemicals particularly organic chemicals from water. Contaminants adhere to the surface of these carbon granules or become trapped in the small pores of the filter.

Activated is sometimes substituted with active. Powdered activated carbons pac are used in batch treatment processes whereas granular gac grades are generally used in fixed filter beds with the water passing through the filtration medium. Water treatment using carbon filters. Activated carbon can be utilized in a granular gac form placed in filter bed or media through which water passes or can be utilized in a powdered form pac that is fed into the treatment train and removed along with other solids present in the water being treated.

Activated carbon filters are generally employed in the process of removing organic compounds and or extracting free chlorine from water thereby making the water suitable for discharge or use in manufacturing processes. Gac filters contain loose millimeter sized granules of activated carbon that can detect and filter contaminants that would often go undetected in some other types of filters. Activated carbon is a material used to filter harmful chemicals from polluted air and water. Activated carbon adsorption is regarded as one of the best and most common treatment methods for removing impurities from drinking water both at municipal treatment works and in home filter systems.

The advantage of using gac for water treatment is that the spent carbon can normally be regenerated via thermal reactivation. Gac filters also can be used to remove chemicals that give objectionable odors or tastes to water such as hydrogen sulfide rotten eggs odor or. This not only improves taste and minimizes health hazards. 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.

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. Granular activated carbon gac is commonly used for removing organic constituents and residual disinfectants in water supplies. Generally an activated carbon filter is used with a pre treatment filter to remove sediment or iron particles that may be present and can clog the carbon filter. The filter media used in these filters are usually coconut shell coal wood and a few others with coconut shell carbon being the most renewable.