Potassium dichromate was chosen as the pollutant with initial concentration of 100 mg/kg. A constant voltage gradient of 1 DCV/cm was applied and the experiment was operated for 48h.

• 选用重铬酸钾作为污染物,其最初浓度为100mg/kg,实验过程中施加1DCV/cm的恒定电压,运行48h。