摘要：

利用电絮凝法处理含砷铜冶炼废水，采用单因素实验及响应面法对影响因素进行了研究，优化了处理条件，并运用XPS技术测定了固体中As、Fe的存在形式，探讨了作用机理。结果表明，响应曲面模型对电絮凝除砷行为拟合较好；在拟合的最佳条件下处理此冶炼废水，砷的去除率可达99%以上。XPS分析结果表明，固体中的Fe主要以Fe³⁺形式存在；部分As³⁺发生了氧化反应，生成了As⁵⁺。

关键词: 电絮凝, 响应面法, 砷, 铜冶炼废水

Abstract:

Arsenic/copper-containing smelting wastewater has been treated by electro-coagulation process. The influencing factors have been studied by single-factor tests and response surface method, and the treatment conditions optimized. The existing forms of As and Fe in solid have been determined by XPS techniques, and its action mechanisms discussed. The results show that the response curved surface model fits the arsenic removing behavior quite well. The arsenic removing rate can be above 99%, if the smelting wastewater is treated under optimal conditions fitted. XPS analysis results show that Fe in solid exists mainly in form of Fe³⁺. Part of As³⁺ has oxidation reaction and forms As⁵⁺.

Key words: electro-coagulation, response surface method, arsenic, copper smelting wastewater

中图分类号: 

• X703