三维电极对水中染料降解脱色处理

研究了在传统二维电解槽的铁板电极之间填充锰砂并鼓气搅拌，得到三相三维电极流化床反应器，对比两种反应器对酸性大红3R染色模拟废水降解脱色作用，考察了槽电压、支持电解质质量浓度、反应时间等因素对两种反应器处理染料脱色率的影响。实验表明，这些因素对酸性大红3R的降解脱色均有不同程度的影响，在相同条件下，三相三维电极流化床反应器比二维电极电解槽的处理脱色速度快和处理效率高，在不同处理时间内，脱色率可提高30％～50％。紫外-可见光吸收光谱分析表明，该方法不仅能对酸性大红3R的生色基团进行降解脱色，且对萘环不饱和共轭体系也具有破坏降解作用。

Decolorization of dye wastewater with three-dimensional electrode reactor

The removal of color from simulating dye wastewater containing Acid Scarlet 3R was investigated using three-phase three-dimensional electrode fluidized bed reactor and traditional two-dimensional electrode reactor. The former is made up of traditional electro-cell and manganese particle filling between two electrodes of iron. Particular attention was paid to probe the effect of the applied cell voltage, the concentration of the inert electrolyte and reaction time on the electrochemical treatment efficiency. The experimental results showed these factors have incoordinate influence on two reactors. In the same conditions, the three-phase three-dimensional electrode fluidized bed reactor could more efficiently remove the color from the simulating dye wastewater than the two-dimensional electrode reactor. The decolorization efficiency of the former was improved a percentage of 30~50. Moreover, the analysis of the UV spectra indicated the former could destroy not only azo bond but also unsaturated naphthyl conjugate system.