In this work, a novel zero liquid discharge technology combining of electrodialysis (ED), electrochemical catalytic oxidation (ECO), reserve osmosis (RO) and bipolar membrane electrodialysis (BMED) was developed for sustainable recovery of high-saline papermaking wastewater. The effect of membrane type, volume ratio, membrane fouling and voltage were investigated in ED process; subsequently parameter such as electrolyte conductivity was studied in ECO process. The FKB/FAB stack shows good separation performance for the salts and organics, allowing a relatively high COD rejection of 97.80%. Meanwhile, membrane fouling was investigated through a comparison between virgin and fouled membranes. To achieve a high-saline solution with low organics, a second-stage ED process was applied. The concentration factor was increased to 1.799 with a COD rejection of 96.54% at voltage of 12 V. Simultaneously, the ECO process exhibited superior COD removal of 94.99% at the electrolyte conductivity of 4 mS/cm. Through the application of BMED at V_f:V_b:V_a (volume ratio of feed, base and acid solution) of 4:1:1, the final acid and base content could approach a high value of 12.30 wt% and 10.60 wt%, respectively. Therefore, this hybrid ED-ECO-RO-BMED combined process demonstrates a strongly technical applicability for sustainable resource recovery from high-saline papermaking wastewater.

在这项工作中，开发了一种将电渗析（ED），电化学催化氧化（ECO），储备渗透（RO）和双极膜电渗析（BMED）相结合的新型零液体排放技术，以可持续地回收高盐造纸废水。在ED工艺中研究了膜类型，体积比，膜污染和电压的影响。随后在ECO工艺中研究了诸如电解质电导率之类的参数。FKB / FAB堆栈显示出对盐和有机物的良好分离性能，可实现97.80％的较高COD截留率。同时，通过对原始膜和污染膜之间的比较研究了膜的污染。为了获得具有低有机物的高盐溶液，应用了第二阶段的ED工艺。集中系数增加到1。799在12 V电压下的C​​OD去除率为96.54％。同时，ECO工艺在4 mS / cm的电解质电导率下表现出94.99％的出色COD去除率。通过BMED在V上的应用_f：V _b：V _a（进料，碱和酸溶液的体积比）为4：1：1，则最终酸和碱含量可能分别达到12.30 wt％和10.60 wt％的高值。因此，这种混合的ED-ECO-RO-BMED混合工艺证明了从高盐造纸废水中可持续资源回收的强大技术适用性。