Influencing factors of 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. Raw water pH value: 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 larger the adsorption capacity.
4. Raw water alkalinity: The concentration of bicarbonate in raw water is high, and the adsorption capacity will decrease.
5. Chloride and sulfate ions.
6. The influence of arsenic: activated alumina has adsorption effect on arsenic in water, and the accumulation of arsenic on activated alumina causes a decrease in the adsorption capacity of fluorine ions, and makes it difficult to elute arsenic ions during regeneration.