紫外催化过硫酸盐深度处理垃圾焚烧厂渗滤液

为研究垃圾焚烧厂渗滤液生化出水的处理特性,对比了单独紫外(UV)体系、单独过硫酸盐(PS)体系以及紫外/过硫酸盐(UV/PS)体系深度处理垃圾渗滤液效果,发现UV/PS体系对渗滤液中有机污染物的去除效果较另外两体系的效果优异,因此采用UV/PS体系处理典型难降解有机物腐殖酸并考察体系的处理效能.在初始腐殖酸浓度为200...

Advanced treatment of landfill leachate by ultraviolet catalytic persulfate

To study the treatment characteristics of leachate biochemical effluent from refuse incineration plant, the effects of advanced treatment of landfill leachate by ultraviolet (UV) system, single persulfate (PS) system and ultraviolet/persulfate (UV/PS) system were compared. The results showed that the removal efficiency of UV/PS system was better than that of the other two systems. When the initial concentration of humic acid was 200mg/L, the dosage of PS was 25mmol/L, and the initial pH value was 4, the maximum removal rate of UV₂₅₄ was 89.62%, the maximum removal rate of TOC was 76.17%. The effects of temperature, initial pH value and dosage ratio of chemicals on the treatment of leachate by UV/PS process were studied. It’s found that the treatment effect was good. The optimal conditions were as follows: temperature 35℃, pH value 4, dosing ratio 2, running for 24h, the maximum removal rate of COD was 82.64%, and the maximum treatment efficiency of TOC was 66.69%. At the same time, the removal ability of the system was in accordance with the pseudo-second-order kinetic equation. This paper can provide reference for advanced treatment of leachate in waste incineration plant.