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.%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.
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