摘要：

对电辅助Fe²⁺活化过硫酸钠高级氧化法预处理屠宰废水进行了实验研究.采用方型电解槽作为反应器,石墨作为阴、阳极,考察了电流密度、Na₂S₂O₈浓度、FeSO₄浓度、pH等反应参数对废水COD降解效果的影响.正交实验结果表明,各参数对废水COD降解的影响程度大小依次为:FeSO₄初始浓度、Na₂S₂O₈初始浓度、pH和电流密度.通过动力学拟合分析还表明其反应过程符合一级反应动力学模型.

关键词: 硫酸根自由基, 电辅助, 高级氧化, 屠宰废水

Abstract:

The treatment of slaughterhouse wastewater by electro-assisted Fe(Ⅱ)+ activated disodium peroxodisul- fate advanced oxidation process has been conducted. The square cell is used as its reactor and graphite as anode and cathode. The influences of operation parameters,including electric current density,Na₂S₂O₈ concentration,FeSO₄ concentration,pH,etc. on the COD degradation effect are investigated. The results of orthogonal analysis show that the influence of influencing degrees of various reaction parameters on the wastewater COD degradation take turns as follows:FeSO₄ initial concentration,Na₂S₂O₈ initial concentration,pH,and current density. The kinetic fitting analysis also shows that the reaction course complies with the first-order kinetics model.

Key words: sulfate radical, electro-assisted, advanced oxidation process, slaughterhouse wastewater

中图分类号: 

• X703