Abstract: An electrochemical oxidation method has been used for treating sulfamethazine(SMZ) in laboratory prepared water,the factors that affect the removing effect on SMZ have been investigated,and the effect of this method on the removal of SMZ from actual wastewater has been studied. The results show that current density has maximum influence on SMZ removal,electrolyte concentration and electrode spacing have little effect on SMZ removal,and the pH of the initial solution has no obvious effect on SMZ removal. Ions,including Cl^-,PO₄^3-,NO₂^-,Fe³⁺,Fe²⁺ and NO₃^-, have certain facilitating effect on SMZ removal,and SMZ can be completely removed within 10 min in the presence of Cl^- ions. The method has better effect on the removal of SMZ from the secondary effluent of the sewage plant. The removing rate of SMZ is three times of the removing rate of prepared water.

Key words: electrochemical oxidation, sulfamethazine, current density, ion species, secondary sedimentation tank eff-luent

摘要： 采用电化学氧化法对实验室配水中的磺胺二甲基嘧啶（SMZ）进行处理，对影响SMZ去除效果的因素进行了考察，并研究了该方法对实际废水中SMZ的去除效果。结果表明，电流密度对SMZ去除影响最大；电解质浓度和电极间距对SMZ去除影响不大；溶液初始pH对SMZ去除无明显影响；水中离子（Cl^-、PO₄^3-、NO₂^-、Fe³⁺、Fe²⁺、NO₃^-）对SMZ去除有一定促进作用，其中Cl^-存在时10 min内可完全去除SMZ。该方法对污水厂二级出水中SMZ的去除效果更好，SMZ去除率为配水的3倍。

关键词: 电化学氧化, 磺胺二甲基嘧啶, 电流密度, 离子种类, 二沉池出水

CLC Number: 

• X703.1