The key role and selection points of activated carbon in water quality treatment

Activated carbon plays a very important role in the field of water treatment, especially in removing organic pollutants, odors, pigments, and trace pollutants from water. The following are the key roles and selection points of activated carbon in water treatment:

pivotal role 

Adsorption of organic matter:

Activated carbon can effectively adsorb organic compounds in water, such as humic acid, pesticide residues, industrial solvents, etc.

Removing odors and pigments:

It can remove odors and pigments from water, improve the taste and appearance of water.

Removing trace pollutants:

Activated carbon has a good removal effect on certain heavy metal ions (such as lead and mercury) and organic pollutants (such as trichloromethane).

Biological activated carbon:

Combined with biological treatment technology, activated carbon can serve as a biofilm carrier to enhance biodegradation.

Preprocessing and post-processing:

In water treatment processes, activated carbon is commonly used as a pretreatment to remove suspended solids and organic matter, or as a post-treatment to ensure water quality safety.

Key selection points

Specific surface area:

Choose activated carbon with high specific surface area, as the larger the specific surface area, the stronger the adsorption capacity.

Pore structure:

The size and distribution of pores have a significant impact on adsorption efficiency. Activated carbon with multiple micropores is more suitable for adsorbing small organic molecules.

Iodine value and methylene blue value:

These indicators can reflect the adsorption performance of activated carbon. The higher the iodine value and methylene blue value, the stronger the adsorption capacity of activated carbon.

Ash and moisture content:

Activated carbon with low ash and moisture content is more suitable for water treatment because they do not affect the adsorption effect.

Particle size and strength:

The particle size affects the pressure drop and contact time of water flow through the activated carbon layer. Activated carbon with high strength is less prone to wear during backwashing.

Chemical stability:

Choose activated carbon with good chemical stability to prevent chemical changes during water treatment.

Regeneration ability:

Considering the regeneration performance of activated carbon, the regeneration ability of activated carbon is an important factor to consider for occasions that require repeated use.

Application purpose:

Select the appropriate type of activated carbon based on the specific needs of water treatment, such as drinking water treatment, industrial wastewater treatment, etc.

Cost effectiveness:

Considering the procurement cost, operating cost, and replacement cycle of activated carbon while meeting water quality requirements.

By considering the above factors comprehensively, the most suitable activated carbon product for specific water treatment needs can be selected to achieve good water purification effects.