Conventional circulating activated sludge techniques (CASS) are time consuming (72 h) and energy intensive, all of which greatly limits their use. Although advanced oxidation techniques (e.g., photocatalysis, photoelectrocatalysis UV/•OH, and Electro-Fenton) can reduce the treatment time by several hours, the slow generation and fast coupling of electron and hole make the low degradation efficiency. In this work, an intact route using a two-step strategy is developed to eliminate organic dyes from wastewater in only a few minutes. The electron and hole exhibit “fast generation and slow coupling” by using the new technique via electrolytic discharge plasma (EDP) combined with a core-shell structure Au@SiO₂ nanocatalyst for [Rhodamine (RhB)/Eosin yellowish (EY)] dyes degradation in wastewater. Results demonstrate that the synergy of EDP and Au@SiO₂ nanocatalyst enhances degradation kinetics, and it is effective in degrading different concentrations of RhB and EY dyes in the range of 50–1.5 mg/L. Then, the Au@SiO₂ nanocatalyst (over 99%) and carbon impurities are filtered by a porous nanocomposite ultrafiltration membrane. Favorable contributions of the two-step strategy are further ascertained based on chemical oxygen demand (COD) and relative removal efficiency. This two-step strategy provides an unprecedented rapid approach for industrial wastewater treatment.

常规循环活性污泥技术（CASS）耗时（72小时）且耗能大，所有这些都极大地限制了它们的使用。尽管先进的氧化技术（例如光催化，光电催化UV /•OH和电子芬顿）可以将处理时间减少数小时，但电子与空穴的缓慢生成和快速耦合使得降解效率较低。在这项工作中，开发了使用两步策略的完整路线，以在几分钟内消除废水中的有机染料。电子和空穴通过电解放电等离子体（EDP）结合核壳结构Au @ SiO ₂的新技术，表现出“快速生成和缓慢耦合”用于若丹明（RhB）/曙红微黄（EY）染料降解的纳米催化剂。结果表明，EDP和Au @ SiO ₂纳米催化剂的协同作用增强了降解动力学，并且可有效降解50-1.5 mg / L范围内的不同浓度的RhB和EY染料。然后，通过多孔纳米复合超滤膜过滤Au @ SiO ₂纳米催化剂（99％以上）和碳杂质。基于化学需氧量（COD）和相对去除效率，进一步确定了两步策略的有利贡献。此两步策略为工业废水处理提供了前所未有的快速方法。