Factors affecting activated alumina

(1) Particle size: The smaller the particle size, the higher the adsorption capacity, but the smaller the particle size, the lower the particle strength, which affects its service life.

(2) pH value of raw water: When the pH value is greater than 5, the lower the pH value, the higher the adsorption capacity of activated alumina.

(3) Initial fluorine concentration of raw water: The higher the initial fluorine concentration, the greater the adsorption capacity.

(4) Raw water alkalinity: The concentration of bicarbonate in raw water is high, and the adsorption capacity will be reduced.

(5) Chloride ions and sulfate ions.

(6) Effect of arsenic: Activated alumina has an adsorption effect on arsenic in water. The accumulation of arsenic on activated alumina causes a decrease in the adsorption capacity of fluoride ions, and makes it difficult to elute arsenic ions during regeneration.