为扩大微电解技术处理实际废水时pH使用范围，根据金属零部件加工清洗废水的水质特点，将纳米铁/铝/碳微电解（nFe/nAl/AC）和过硫酸盐（PS）联用构成nFe/nAl/AC-PS体系处理废水。通过液相共还原法制备了nFe/nAl/AC，并对样品进行XRD、SEM与XPS表征。考察过硫酸钠浓度、nFe/nAl/AC质量浓度、反应初始pH对COD去除率的影响；当采用nFe/nAl/AC-PS体系降解清洗废水时，原水pH为6.8时，COD去除率可达75.7%；捕获剂实验表明降解污染物起主要作用的是·OH。通过磁回收实现再利用，3次循环使用后仍有较高COD去除率。

In order to expand the applicable range of pH in the treatment of actual wastewater by micro-electrolysis technology, nano-iron/aluminum/carbon micro-electrolysis (nFe/nAl/AC) and persulfate (PS) technology are combined to form a nFe/nAl/AC-PS system for the treatment of wastewater from metal parts processing and cleaning.The nFe/nAl/AC is prepared via liquid phase co-reduction method, and the samples are characterized by means of XRD, SEM and XPS.The effects of sodium persulfate dosage, nFe/nAl/AC dosage and initial pH on the removal rate of COD are investigated.It is shown that the removal rate of COD can reach 75.7% when nFe/nAl/AC-PS system is utilized to decompose the wastewater that has an initial pH value of 6.8.The capture agent experiment indicates that ·OH plays a major role in the degradation of pollutants.The nFe/nAl/AC-PS system can be reused after magnetic recovery, and can contribute to a high COD removal rate after three cycles of reuse.

刘欢欢(1993-),女,硕士研究生,研究方向为工业废水处理,1083421340@qq.com