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In water treatment, one of the most important steps to obtain clean, safe, and pleasant water is the removal of chlorine, color, and odor. In this process, granular activated carbon (GAC) has become an essential component thanks to its high adsorption capacity and efficiency in water purification.

What is Granular Activated Carbon?

Granular activated carbon is a porous material with an enormous internal surface area capable of trapping and retaining unwanted molecules. It is produced from organic materials such as coconut shells, bituminous coal, or wood, which undergo a thermal activation process that creates millions of micropores.

These pores act like magnets for organic compounds, free chlorine, pesticides, dyes, and contaminants that affect water quality. Its granular form makes it ideal for fixed-bed filters or continuous treatment systems, ensuring high retention capacity and long service life.

Why is it essential in water treatment?

Granular activated carbon plays a key role in removing residual chlorine, preventing the unpleasant taste and odor often found in drinking water. Moreover, it protects sensitive equipment such as reverse osmosis membranes or ultrafiltration systems from oxidation damage caused by chlorine and other oxidizing agents.

It is also effective in removing volatile organic compounds (VOCs), chlorine by-products, and microcontaminants that could impact both health and industrial processes.

Benefits of Using GAC in Water Treatment Plants

• Improves water taste and odor

• Protects equipment and membranes

• Reduces the formation of toxic by-products

• Increases purification system efficiency

• Complies with international water quality standards

Conclusion

Granular activated carbon is more than just a filter—it is a strategic ally in any drinking or industrial water treatment system. Its ability to eliminate chlorine, color, and odor makes it an essential step toward achieving higher water quality that is both safe and sustainable.