Introduction to several methods of regeneration of activated carbon filtration equipment

Activated carbon filters need to be cleaned and regenerated after some time, otherwise, they will not work well.
Several methods of regeneration of activated carbon filtration equipment.

1、Pharmaceutical elution method

This method is mainly for high concentration, low boiling point organic adsorption material, you can use inorganic acid (such as sulfuric acid, hydrochloric acid, etc.) or alkali (sodium hydroxide) and other agents to remove the adsorption material treatment, this method can also be called acid-base regeneration method.

2、Biological regeneration method

This method uses special substances to treat the failed activated carbon, making the organic matter degraded, oxidized, and decomposed into CO2 and H2O, so that its adsorption performance is gradually restored, but this method is only applicable to saturated carbon that is easily decomposed by microorganisms, and the decomposition reaction must be very thorough, otherwise, the regeneration effect will be affected.

In recent years, the use of activated carbon for the adsorption of organic matter in water and the use of the surface of the activated carbon as a carrier for the growth of microorganisms has become increasingly common.
This water treatment technology is also known as bio-activated carbon. The life cycle of activated carbon can be extended and the adsorption effect will be enhanced.

3. Wet oxidation method

This method is usually used for the regeneration of powdered activated carbon. The organic matter adsorbed by the activated carbon is slowly oxidized and decomposed under high temperature and pressure to regenerate the activated carbon.
After regeneration, the activated carbon is cooled by a heat exchanger and then sent to a storage tank for reuse. The ash from the carbonization of the organic matter collects at the bottom of the reactor and is discharged at regular intervals.
This method is generally suitable for the treatment of highly toxic and difficult-to-degrade adsorbed materials, while the temperature and pressure in operation are determined by the characteristics of the adsorbed material.