In recovery system of seawater flue gas desulfurization (SWFGD) process, a novel integrated electrochemical-aerating oxidation method is developed. The influences of process factors such as anode-cathode brush assembly, applied current and dilution ratio on S(IV) oxidation performance are investigated, in connection with S(IV) oxidation rate, the anodic potential range of S(IV) oxidation, energy consumption and total amount of seawater. Compared with the conventional aerating process, the integrated oxidation is confirmed as an energy-efficient and seawater-saving improvement for existing SWFGD recovery system. Based on these experiment results, the reaction mechanism is also proposed. The electrochemical reactions on modified polyacrylonitrile-based carbon fiber (MPAN-CF) brush anode and polyacrylonitrile-based carbon fiber (PAN-CF) brush cathode, together with aerating process, synergistically accelerate the S(IV) oxidation. Therefore, integrated electrochemical-aerating oxidation method using MPAN-CF&PAN-CF anode–cathode brushes is promising for industrial application and is expected for the treatment of high sulfur flue gas in future.

在海水烟气脱硫（SWFGD）过程的回收系统中，开发了一种新型的电化学曝气-氧化综合方法。结合S（IV）的氧化速率，S（IV）氧化的阳极电位范围，能量，研究了阳极-电刷组件，施加的电流和稀释比例等工艺因素对S（IV）氧化性能的影响。消耗量和海水总量。与传统的曝气工艺相比，对于现有的SWFGD回收系统，集成的氧化工艺被证明是一种节能高效和节水的改进方法。根据这些实验结果，还提出了反应机理。改性聚丙烯腈基碳纤维（MPAN-CF）电刷阳极和聚丙烯腈基碳纤维（PAN-CF）电刷阴极的电化学反应，与曝气过程一起，协同促进S（IV）氧化。因此，使用MPAN-CF的集成电化学曝气氧化方法＆ PAN-CF阳极-阴极刷在工业应用中前景广阔，并有望在将来用于高硫烟气的处理。