Abstract: The three-dimensional electro-Fenton(3DEF) system using activated carbon loaded Ti particles as par-ticle electrode has been applied to the treatment of landfill leachate concentrated solution. Its optimum reaction con-ditions have been determined by single factor experiments and the influences of all the factors on the treatment effect of nano-concentrated solution analyzed. Under the following appropriate conditions:the current density is 15 mA/cm², Fe(Ⅱ) dosage 1.0 mmol/L, plate distance 10 cm, particle electrode dosage 10 g/L, and reaction time 100 min, the re-moving rate of COD and UV₂₅₄ are 72.4% and 62.8%, respectively, and B/C rate is increased from 0.002 to 0.15. The biological toxicity of the treated NF concentrated solution is decreased obviously. In addition, the concentrations of TP and heavy metals in NF concentrated solution effluent which was treated by 3DEF system can meet the requirements for the national discharge standard.

Key words: landfill leachate concentrated solution, three-dimensional electro-Fenton, particle electrode

摘要： 文章应用活性炭载Ti颗粒作为粒子电极的三维电-Fenton系统处理垃圾渗滤液纳滤浓缩液。通过单因素实验确定最佳反应条件并分析各因素对纳滤浓缩液处理效果的影响。在电流密度为15 mA/cm²，Fe（Ⅱ）投加量为1.0mmol/L，极板间距为10 cm，粒子电极投加量为10 g/L的最佳反应条件下处理100 min后，COD、UV₂₅₄的去除率分别为72.4%与62.8%，B/C由0.002提升至0.15，处理后的浓液生物毒性明显降低。此外，应用三维电-Fenton系统处理后的NF浓缩液出水总磷以及重金属浓度满足国家排放标准要求。

关键词: 垃圾浓缩液, 三维电-Fenton, 粒子电极

CLC Number: 

• X703.1