以人造沸石为载体,采用盐酸浸泡活化和氯化铁溶液浸泡改性的方法制备除氟吸附剂,用模拟高氟水样进行静态吸附及动态过柱实验。动力学研究结果表明:吸附剂吸附速度快,40 min接近吸附平衡,吸附速率可用拟二级动力学方程描述。吸附等温线符合Langmuir方程,饱和吸附量为9.83 mg/g,吸附平衡常数为0.030 2 L/mg。静态实验对浓度为10.43 mg/L的含氟水样投加7.0 g/L吸附剂,除氟率达91.56%。动态实验有效除氟容量(指出水的氟离子含量低于1.0 mg/L的除氟容量)达2.78 mg/g。除氟后沸石可采用0.1 mol/L NaOH溶液洗脱,100 g/L的氯化铁溶液再生,再生效率达113%。溶液pH值对除氟有较大影响,除氟最佳在pH 5~6。共存CaCl2对静态和动态除氟的影响不同,增大CaCl2浓度有利于静态除氟,不利于动态除氟。温度对吸附有一定影响,升高温度不利于吸附。 Using artificial zeolite as carrier, the fluoride-removing adsorbent was prepared by hydrochloric acid soaking activation and ferric chloride solution soaking, and the static adsorption and dynamic column experiments were simulated by simulated high-fluorine water sample. Kinetic studies show that: adsorbent adsorption speed, 40 min close to the adsorption equilibrium, the adsorption rate can be described by the pseudo-second-order kinetic equation. The adsorption isotherms fit the Langmuir equation, with a saturated adsorption capacity of 9.83 mg / g and an adsorption equilibrium constant of 0.030 2 L / mg. In the static experiment, 7.0 g / L adsorbent was added to the fluorine-containing water sample with the concentration of 10.43 mg / L, the rate of removing fluoride was 91.56%. The dynamic experiments showed that the effective fluoride removal capacity of 2.78 mg / g, which indicates that the fluoride ion content of water is lower than 1.0 mg / L. After de-fluoride zeolite can be 0.1 mol / L NaOH solution elution, 100 g / L ferric chloride solution regeneration, regeneration efficiency of 113%. The pH value of the solution has a greater impact on fluoride removal, and the best fluoride removal is at pH 5-6. The effect of coexisting CaCl2 on static and dynamic fluoride removal is different, increasing CaCl2 concentration is conducive to static fluoride removal, which is not conducive to the dynamic removal of fluoride. Temperature has a certain impact on the adsorption, raising the temperature is not conducive to adsorption.