The main factors affecting the adsorption performance of activated alumina

The main factors affecting the adsorption performance 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　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 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.