Activated alumina can be used as a point-of-entry or point-of-use water treatment device. Activated alumina absorbs contaminants instead of filtering them. The effectiveness of activated alumina depends on the contaminant, the characteristics of the alumina, the device design, and the water quality.
Activated alumina can be an effective treatment method for source water with a high total dissolved solids level or sulfate concentration. Activated alumina devices contain a packed bed of activated alumina granules. As water passes through the device, certain contaminants are adsorbed onto the activated alumina granules.
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