中文摘要：

三氯硫磷作为重要的农药中间体,在生产过程中可能产生高浓度Al（3＋）与磷酸盐共存的强酸性废水,有效分离Al（3＋）与磷酸盐并进一步分别对其回收利用具有重要意义。围绕上述问题,选择001×7强酸型苯乙烯系阳离子交换树脂,研究了Al（3＋）与磷酸盐在单一和共存体系下的动态吸附交换行为。研究发现,该树脂对Al（3＋）有良好的吸附性能,Al（3＋）穿透曲线表现为典型的＂S＂型,采用Thomas模型可以很好地模拟Al（3＋）吸附过程。当初始Al（3＋）浓度（[Al（3＋）]0）为1 000 mg·L（-1）且流速为4、6和10 BV·h（-1）时,穿透交换容量（Al（3＋）平衡浓度为10 mg·L（-1））分别为14.08、12.16和11.09 mg·g（-1）;磷酸盐的存在促进了Al（3＋）的交换,当体系存在4 300 mg·L（-1）磷酸盐时,穿透交换容量分别提高了16.50%、9.61%和6.37%。对于吸附饱和的树脂,采用4%HCl溶液可达到98.3%再生率。采用阳离子交换树脂分离Al（3＋）与磷酸盐共存废水,这可能是实现二者分离与后续回收的有效手段之一。

英文摘要：

The productive process of thiophosphoryl chloride which was an important pesticide intermediate may produce strong acid wastewater with high concentration of Al3＋ and phosphate. It＇ s of great significance to a- chieve effective separation of Al3＋ and phosphate for recovery and utilization. This study focused on the above problems. The dynamic adsorption exchange behavior of Al3＋ and phosphate in single and coexistence system on the 001 × 7 strong acidic styrene cation exchange resin was researched. It was found that the resin had good ad- sorption performance for Al3＋. The Al3＋ breakthrough curve showed a typical ＂S＂ type, and the Thomas model could be used to simulate the adsorption process of Al3＋ effectively. With the initial concentration of Al3＋ 1 000 mg· L^-1 and the flow rates of 4, 6 and 10 BV ·h^-l, the breakthrough exchange capacity was 14.08, 12. 16 and 11.09 mg · g^-1 , respectively. The presence of phosphate promoted the exchange of Al3＋ The breakthrough exchange capacity of Al3＋ was increased by 16.50%, 9.61% and 6.37% at the concentration of phosphate 4 300 mg · L^-1. The 4% HCl solution could be used as regenerator achieving a 98.3% of regeneration rate. It was feasible to separate and recover of Al3＋ and phosphate from strong acid wastewater by using cation exchange resin as scavenger.