Methylene blue (MB) removal by means of a filter press electrochemical flowcell operating in recycle mode, equipped with graphite electrodes was surveyed. Hydrodynamics and mass transport inside flowcell were evaluated by Computational Fluid Dynamics (CFD) simulations and validated by experimental Residence Time Distribution (RTD) technique. Good agreement was observed between experimental data and simulated MB decay. Increasing flowrate from 0.31 to 0.51 L min⁻¹ increased MB decay by 9% validating assumption of mass transfer controlled reaction at the anode. Increasing wastewater pH level from 3 to 9, significantly decreased MB decolorization by 20 %, which is attributed to complex reaction mechanism. Increasing applied electrical voltage from 3 to 7 V led to marginal change in MB concentration decay. By increasing initial MB concentration from 2 to 10 ppm, 5% decrease in MB decolorization was observed. Electrooxidation of 0.5 L synthetic wastewater under optimum operation conditions during 5 h (flowrate of 0.53 L min⁻¹, pH = 3, 5 V applied voltage) led to MB concentration decay of 0.041, 0.059, and 0.08 for initial MB concentration of 2, 5, and 10 ppm, respectively. Results of current study in pre-pilot scale provide valuable information for large scale studies in the field of wastewater treatment.

调查了通过配备石墨电极的循环操作压滤电化学流动池对亚甲基蓝（MB）的去除。通过计算流体动力学（CFD）模拟评估了流通池内部的流体动力学和质量传递，并通过实验停留时间分布（RTD）技术进行了验证。实验数据和模拟的MB衰减之间观察到良好的一致性。流量从0.31 L min ^-1增加到0.51 L min ^-1MB衰减增加了9％，从而验证了阳极传质控制反应的假设。将废水的pH值从3提高到9，可显着降低MB脱色20％，这归因于复杂的反应机理。将施加的电压从3 V增加到7 V导致MB浓度衰减的边际变化。通过将初始MB浓度从2 ppm增加到10 ppm，可以观察到MB脱色减少5％。在最佳操作条件下5小时内，0.5 L合成废水的电氧化（流量为0.53 L min ^-1，pH = 3，施加5 V电压）导致MB初始浓度分别为2、5和10 ppm时，MB浓度分别下降0.041、0.059和0.08。前试规模的当前研究结果为废水处理领域的大规模研究提供了有价值的信息。