In this study, the treatment of nanofiltration (NF) concentrate from a landfill leachate treatment plant through the electrooxidation (EO) process was investigated. Experimental studies were conducted in a batch reactor equipped with multi-metal oxide/TiO₂ doped Ti anode and Pt doped Ti cathode. Persulfate was added as the oxidant and the performance of Fe⁰, Fe²⁺, and Fe³⁺ species as catalysts for persulfate activation was compared. Kinetic studies were carried out for chemical oxygen demand (COD) removal from leachate NF concentrate. Maximum COD removal efficiency was obtained by the EO process in which persulfate was added as the oxidant and Fe²⁺ was used as the catalyst for persulfate activation. Optimum values of the process variables (pH 5, current 2 A, Fe²⁺ dose 12 mM and persulfate dose: 60 mM) were determined. The COD removal was 77.1% under optimum conditions. The overall COD removal mechanism is well fitted with the pseudo-first-order and second-order kinetic models with R² values of > 0.80 under all applied current values. Specific energy consumption calculated for optimum conditions were 73.4 kWh/m³ and 14.3 kWh/kg COD. The EO process assisted with Fe²⁺ activated persulfate can be evaluated as an efficient treatment method for leachate NF concentrate treatment.

在这项研究中，研究了通过电氧化 (EO) 工艺处理来自垃圾渗滤液处理厂的纳滤 (NF) 浓缩物。实验研究在配备多金属氧化物/TiO ₂掺杂的Ti阳极和Pt掺杂的Ti阴极的间歇反应器中进行。添加过硫酸盐作为氧化剂，比较了Fe ⁰、Fe ²⁺和Fe ³⁺物种作为过硫酸盐活化催化剂的性能。对从渗滤液 NF 浓缩物中去除化学需氧量 (COD) 进行了动力学研究。通过添加过硫酸盐作为氧化剂和 Fe ²⁺的 EO 工艺获得最大的 COD 去除效率用作过硫酸盐活化的催化剂。确定了工艺变量的最佳值（pH 5，电流 2 A，Fe ²⁺剂量 12 mM 和过硫酸盐剂量：60 mM）。最佳条件下COD去除率为77.1%。整体 COD 去除机制与伪一级和二级动力学模型非常吻合，在所有施加的电流值下，R ²值 > 0.80。针对最佳条件计算的特定能耗为 73.4 kWh/m ³和 14.3 kWh/kg COD。Fe ²⁺活化过硫酸盐辅助的EO工艺可被评价为渗滤液NF浓缩物处理的有效处理方法。