Spirit activated alumina: 1, adsorption time and adsorption effects: adsorption volume adsorption of various adsorbents with the extension of time increases, but after a certain time, the adsorption tends to slow incremental adsorbent are. 2, adsorbent dosage and fluoride effects: adsorbent dosage fewer, more fully adsorption, absorption, the better. Therefore, when activated alumina catalyst, using adsorbents fluoride, should be to ensure the water passing under the premise of activated alumina, combined footprint, adsorption time, treatment scale, combined with the regenerative mode and frequency, choose the smallest amount of adsorbent. 3, the effect of solution pH and fluoride: activated alumina at about pH7 0 of F- adsorption worst; under acidic or basic conditions, the adsorption capacity were significantly improved. 4, activated alumina regeneration: the activated alumina adsorption saturation after placement 100g / L of aluminum sulfate solution soaking 30h, the solution was discarded, washed with water 3 to 5 times, each time with water 2L. Activated alumina surface after long-term use was brown, fluoride effect is reduced, which is caused by impurities adsorbed activated alumina powder, available in 3% hydrogen peroxide, hydrochloric acid treatment times with an activated alumina, and then regenerate the above method. Activated alumina is a porous high dispersion having a solid material, has a large surface area, both good adsorption properties, and good pressure resistance, wear and heat resistance, and therefore, is widely used as efficient adsorbents, catalyst carriers and various reactions of the desiccant. 1) Product grain structure, molecular formula, molecular weight of the grain structure: XP-type formula: AL2O3 molecular weight: 1022) Properties: white, spherical porous material, non-toxic, odorless, not powder, insoluble in water. Technical Specifications: Name Appearance Bulk density g / ml strength N / grain surface area m2 / g pore volume ml / g active% static adsorption capacity PH = 60% water absorption% attrition rate indicators white spherical 0.65-0.8% 127.4-392 300-340 0.38-0.42 ≥70 16-18 50-75 0.1 activated alumina _ Activated alumina ball fluoride removal agent (certified) _ Huzhou activated alumina supplied by water purification materials Co., Ltd., Henan Golden Age. Henan Spirit Water Material Co. (www.gyssjs.com) is a leader in Zhengzhou, water treatment chemicals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the Golden Age of water purification leadership with the staff warmly welcome all inquiries negotiations to create a better future prosperity water.