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利用鄂尔多斯盆地白垩系的方沸石岩样,通过提纯和改性等处理制成多孔方沸石球,用于处理含氟水。用过的方沸石球经再生处理也用于处理含氟水。实验结果表明,多孔方沸石球和再生方沸石球都有明显的除氟效果。对于100mL浓度5.00 mg/L的含氟水,多孔方沸石球较佳的水处理工艺条件为:用量3.0 g,搅拌后静置48 h。对于浓度3.00 mg/L的含氟水,一次水处理就能将F-浓度降到国家标准以内,除氟效率达60%。对于浓度5.00 mg/L的含氟水,2次水处理可以将F-浓度降到国家标准以内,除氟效率达80%。多孔方沸石球对氟离子的吸附符合Langmuir等温式,吸附速度符合斑厄姆公式。再生方沸石球对氟离子的吸附也符合Langmuir等温式,吸附速度也符合斑厄姆公式。多孔方沸石球和再生方沸石球的饱和吸附量相当,这说明用过的方沸石球经再生处理后活性基本恢复,可循环用于含氟水的处理。
Utilizing the Cretaceous analcime rock samples from the Ordos Basin, porous mesoporous zeolite balls were prepared through purification and modification to treat fluoridated water. Used cubic zeolite ball regeneration treatment is also used to deal with fluorine-containing water. The experimental results show that the porous side-loading zeolite balls and regenerating side-loading zeolites have obvious de-fluoride effect. For the 100mL concentration of 5.00 mg / L of fluorine-containing water, porous zeolite ball better water treatment process conditions: the amount of 3.0 g, 48 h after stirring stand. For the concentration of 3.00 mg / L of fluorine-containing water, a water treatment will be able to reduce the F-concentration within the national standard, the fluoride removal efficiency of 60%. For the concentration of 5.00 mg / L of fluorine-containing water, 2 times the water treatment can reduce the F-concentration within the national standard, fluoride removal efficiency of 80%. The adsorption of fluoride ions on porous mesoporous zeolite follows the Langmuir isothermal equation, and the adsorption rate accords with the dharma formula. The regeneration of cubic zeolite ball adsorption of fluoride ion is also consistent with Langmuir isotherm, the adsorption rate is also consistent with the damesham formula. The saturated adsorption capacity of porous mesher zeolite balls and regenerator zeolite balls is equivalent, which shows that the used zeolite balls have basically recovered their activity after being regenerated and can be recycled for the treatment of fluorine-containing water.