HZ-16型大孔树脂吸附处理含RDT-8废水

采用HZ-16型大孔树脂对含三（三溴苯氧基）三嗪（RDT-8）废水进行吸附及脱附处理。实验结果表明：在废水流量为4.0 BV/h的条件下，树脂最佳吸附工艺条件为出水体积88.0 BV，此条件下出水COD小于291 mg/L，挥发酚质量浓度小于0.08 mg/L；在脱附液流量为0.5 BV/h的条件下，树脂最佳脱附工艺条件为脱附液体积3.0 BV，此条件下脱附液中挥发酚质量浓度为30.6 mg/L，挥发酚脱附率高达76.4%。在最佳吸附-脱附工艺条件下，连续进行10次动态吸附-脱附实验，吸附出水中COD为137~294 mg/L，COD去除率为72.5%~89.1%，挥发酚质量浓度稳定在0.05 mg/L以下，挥发酚去除率为99.8%~100%，说明HZ-16型大孔树脂的吸附-脱附性能稳定。

Treatment of Wastewater Containing RDT-8 Using Macroporous Resin HZ-16

The wastewater containing 2，4，6-Tris-(2，4，6-tribromophenoxy)-1，3，5-triazine(RDT-8) was treated by the adsorption-desorption process with macroporous resin HZ-16. The experimental results show that：When the wastewater flow is 4.0 BV/h and the optimum adsorption condition is 88.0 BV of effluent volume，the COD and volatile phenol mass concentration of the effluent are less than 291 mg/L and 0.08 mg/L respectively；When the desorption solution flow is 0.5 BV/h and the optimum desorption condition is 3.0 BV of desorption solution volume，the volatile phenol mass concentration of the desorption solution is 30.6 mg/L and the desorption rate of volatile phenol is as high as 76.4%. 10 times of dynamic adsorption–desorption experiments were carried out under the optimum conditions. The effluent COD is 137-294 mg/L with 72.5%-89.1% of removal rate and the volatile phenol mass concentration is below 0.05 mg/L with 99.8%-100% of removal rate. It indicates that the adsorption-desorption performance of macroporous resin HZ-16 is stable.