氧化锆负载树脂处理含氟废水的研究

A Study on the resin loaded with ZrO_2 and its application to F-bearing wasterwater treatment

以火力发电厂废树脂为载体 ,制备了负载锆的水合氧化物氟离子吸附树脂 ,并探讨了该树脂对氟离子的吸附性能 .该树脂对氟离子的吸附和脱附与溶液的pH值有关 ,溶液 pH =3 .0时吸附效果较好 ,而溶液pH≥ 12 .0时脱附效果较好 .进行了该树脂对氟离子的吸附等温线试验 ,该吸附符合Langmuir和Freundlich吸附等温线 ,通过Langmuir型吸附等温得出的饱和吸附量Q0 为 714mg/g .利用该树脂对模拟火力发电厂含氟废水进行了处理 。

A ZrO 2 based adsorbent,the waste resin from thermal power plant loaded with ZrO,was developed,and its adsorption performance for fluoride removal was evaluated.Experimental results show that the adsorption and desorption of fluoride was related to pH.The optimum pH for adsorption and desorption were about 3 and 12,respectively.The adsorption of fluoride follows Freundlich and Langmuir isotherm in the tested range of fluoride concentration. Q 0 was 714mg/g calculated by Langmuir isotherm.The adsorbent ...