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What are the disadvantages of activated carbon for water purification?

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Carrie Ge

Water purification activated carbon can remove the smell, color, residual chlorine, colloid, organic matter (synthetic detergents, pesticides, herbicides, pesticides, synthetic dyes, trihalomethanes, haloacetic acids, endocrine disruptors such as phthalates). activated carbon extracting gold Formate PAES, etc.), heavy metals (such as mercury, silver, cadmium, lead, nickel, chromium, etc.), radioactive substances, etc.

 

It is the earliest and most commonly used water purification material in water purifiers. Activated carbon is used not only in ordinary activated carbon water purifiers, but also in household reverse osmosis water purifiers, as well as in most ultrafiltration, ceramic, KDF, UV and other water purifiers.

 

Activated carbon and KDF can remove residual chlorine in water, but the reaction of KDF and chlorine to generate zinc ions (Zn2+) may cause excessive zinc in water, and there is no need to worry about such reactions when using active carbon to remove residual chlorine.

 

Activated carbon forms a large number of fine pores of various shapes during the activation process, forming a huge external surface area with adsorption effect. Its specific surface area is 500~1200m2/g. The larger the specific surface area, the better the adsorption effect. activated carbon manufacturer Negative effect of activated carbon Activated carbon adsorbs a large amount of organic matter. These organic matter will become the nutrition of bacteria and other microorganisms. The bacteria will multiply and multiply in the micropores of the activated carbon, and may cause the total number of colonies in the effluent to exceed the standard.

 

The activated carbon in the water purifier converts the ammonia nitrogen in the water into nitrite nitrogen under the catalysis of microorganisms. It often appears that the nitrite in the effluent water of the water purifier is higher than the influent water. The nitrite itself is not a carcinogenic substance, but it is not a carcinogen. The amine nitrite produced by the reaction of amines in water is a strong carcinogen.

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