Influencing factors of activated alumina
Jan 07, 2022
(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 in raw water: the higher the initial fluorine concentration, the larger the adsorption capacity.
(4) Raw water alkalinity: The high concentration of bicarbonate in raw water will reduce the adsorption capacity.
(5) Chloride and sulfate ions.
(6) Influence 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 it is difficult to elute arsenic ions during regeneration.
