Abstract: An ionic exchange membrane electrolysis device and a non-isolated electrolysis tank have been used for the treatment of simulated antimony-containing wastewater. The negative electrode and positive electrode are anti-mony and graphite,respectively. The removing rates and residual concentrations of Sb(Ⅲ) and Sb(Ⅴ) after being electrolytically treated for 2.5 h are discussed. The results show that in the presence of ionic exchange membrane isolation,the removing rates of Sb(Ⅲ) and Sb(Ⅴ) are 93.68% and 95.65%,respectively. In the case of non-isolated electrolysis,the removing rate of Sb(Ⅲ) is 54.71%,while the removing rate of Sb(Ⅴ) is only 8.9%. After using 1% of ascorbic acid for pre-reduction,in the case of non-isolated electrolysis,the removing rates of Sb(Ⅲ) and Sb(Ⅴ) can reach 75.9% and 82.01%,respectively. Non-isolated electrolysis can also effectively control Sb concentration in the waste liquid to lower than 0.5 mg/L. Increasing the cathode electrolysis area appropriately can further improve the antimony removing rate,and lower the residual concentration in wastewater.

Key words: antimony removal, electrochemical reduction, non-isolated electrolysis, ascorbic acid

摘要： 采用离子交换膜电解装置和非隔离电解槽处理含锑模拟废水，阴、阳电极分别为铅和石墨，探讨电解处理2.5 h后Sb（Ⅲ）和Sb（Ⅴ）的去除率及残余浓度。结果表明，有离子交换膜隔离时，Sb（Ⅲ）、Sb（Ⅴ）去除率分别为93.68%、95.65%；非隔离电解时，Sb（Ⅲ）去除率约为54.71%，而Sb（Ⅴ）去除率仅为8.9%。使用1%抗坏血酸预还原后，非隔离电解时Sb（Ⅲ）、Sb（Ⅴ）去除率可分别达到75.9%、82.01%。非隔离电解也能有效控制废液中锑质量浓度在0.5 mg/L以下。适当增加阴极电解面积，可进一步提高锑的去除率、降低废水中锑的残余浓度。

关键词: 锑去除, 电化学还原, 非隔离电解, 抗坏血酸

CLC Number: 

• X703

• P747.3