Abstract: To address industry challenges including low electrophoretic paint recovery rates, excessive pure water consumption and large wastewater discharge of traditional electrophoretic coating lines, this paper draws on design experience from previous renovation projects to optimize the design of electrodialysis reverse osmosis (EDRO) systems and increase ultrafiltration water output, stabilize the state of EDRO stock solution and precisely control effluent water quality. Long-term on-site parameter monitoring and operation data indicate that the adoption of EDRO systems raises the utilization rate of electrophoretic paint to 99%, greatly cuts pure water consumption and realizes zero wastewater discharge in electrophoretic processes, delivering remarkable environmental benefits.

Key words: EDRO; paint; electrophoresis; water conservation and emission reduction

摘要： 针对传统电泳涂装线电泳漆回收率低、纯水及废水排放量大等行业难题，文章结合既 有改造项目设计经验，优化电泳反渗透（EDRO）系统设计并提升超滤产水量，稳定 EDRO 原液状态，精准调控出水水质。现场长期参数监测与运行数据显示，采用 EDRO 系统可将电 泳漆利用率提升至 99%，大幅降低纯水消耗，达成电泳工序废水零排放，具备显著环保效益。

关键词: EDRO；涂装；电泳；节水减排