大孔树脂吸附处理邻苯二胺废水工艺研究

采用ＤＡ２０１－ＣⅢ 型大孔吸附树脂对邻苯二胺废水进行吸附和脱附处理。结果表明，在吸附流速为２ＢＶ／ｈ（ＢＶ为树脂床体积），吸附温度为２５℃，废水初始ｐＨ 值为１３的优化条件下，单柱吸附能力为１２ＢＶ，邻苯二胺脱除率大于９８．８％；采用工业乙醇在６０℃，以１ＢＶ／ｈ的流速脱附吸附饱和的大孔树脂，当脱附剂体积为３ＢＶ时，邻苯二胺脱附率可达９９．５％；在最佳吸附和脱附条件下，连续进行１５次动态吸附－脱附实验，邻苯二胺吸附率为９８．８％ ～９９．８％，脱附率为９９．１％ ～９９．８％。

Study on the adsorption treatment process of wastewater containing o-phenylenediamine with macroporous resin

The wastewater containing o-phenylenediamine was treated by the adsorption-desorption process with macroporous resin DA 201-C Ⅲ as adsorbent and commercial alcohol as desorbent.The results showed that under the optimum conditions of adsorption flow 2 BV（short for resin bed valume）/h,adsorption temperature 25 ℃ and wastewater pH value 13,the adsorption capacity of single column reached 12 BV,and the removal rate of o-phenylenediamine was more than 98.8％.At temperature 60 ℃,alcohol flow 1.0 BV/h and alcohol volume 3 BV,the desorption rate of o-phenylenediamine reached 99.5％.The continuous dynamic adsorptiondesorption experiments were carried out for 15 cycles under the optimum conditions,the adsorption rate of o-phenylenediamine ranged from 98.8％ to 99.8％,and the desorption rate from 99.1％ to 99.8％.