This paper presents the results of electrochemical oxidation of dye-containing wastewater over a BDD anode. Batch experiments were conducted at a fixed current density of 2.8 mA/cm² to analyze the performance of the electrochemical process for the treatment of textile and paint wastewater utilizing different supporting electrolytes (Na₂SO₄ and NaCl). During electrolysis, emphasis was put on measuring different parameters such as chemical oxygen demand (COD), turbidity, conductivity, and color removal. The results revealed that BDD cell exhibited higher COD removal efficiency for textile wastewater than for paint wastewater. Adding supporting electrolytes had a positive effect on COD, turbidity, and color removal efficiencies for both textile and paint industry effluents. For textile wastewater, Na₂SO₄ and NaCl yielded a reduction in COD of 94% in 6 hours compared to 84% with no electrolyte added. The presence of Na₂SO₄ and NaCl in paint wastewater resulted in different COD removal percentages of 71 and 85% respectively with 21% in raw sample after 4 hours of treatment. The discoloration reached a percentage higher than 96% for both effluents and for both electrolytes. Under the same experimental conditions, all cases showed turbidity removal higher than 97%. The kinetic study showed that the reaction rate followed pseudo-first-order kinetics.

本文介绍了BDD阳极上含染料废水的电化学氧化结果。在2.8 mA / cm ²的固定电流密度下进行了批量实验，以分析电化学方法在使用不同支持电解质（Na ₂ SO ₄和氯化钠）。在电解过程中，重点放在测量不同的参数上，例如化学需氧量（COD），浊度，电导率和颜色去除。结果表明，BDD池对纺织废水的COD去除效率高于对油漆废水的COD去除效率。添加支持电解质对纺织和油漆工业废水的化学需氧量，浊度和除色效率都有积极影响。对于纺织废水，Na ₂ SO ₄和NaCl在6小时内的COD减少了94％，而没有添加电解质的情况则为84％。Na ₂ SO ₄的存在处理4小时后，油漆废水中的NaCl和NaCl导致不同的COD去除率分别为71％和85％，而原始样品中的21％。两种废水和两种电解质的变色率均高于96％。在相同的实验条件下，所有情况下的浊度去除率均高于97％。动力学研究表明反应速率遵循拟一级动力学。