摘要
以复极性固定床电解槽为反应器,利用CuO-CeO2/γ-Al2O3多相催化剂取代传统反应器的绝缘填料,构建电-多相催化氧化耦合体系.考察了槽电压、pH值、气体流量和极间距等因素对渗滤液氨氮的影响.结果表明,当槽电压为15.0V,pH为7,曝气量为0.08m3·h-1,极板间距为3.0cm时,反应180min后,氨氮的去除率能达到94.7%.与传统石英砂相比较,利用CuO-CeO2/γ-Al2O3做绝缘填料,氨氮的处理效果明显提高.
With the combination of electrochemistry and heterogeneous catalysis in the bipolar packed bed cell, the insulative particle was replaced by CuO-CeO2/γ-Al2O3catalyst and heterogeneous catalytic reactions occurred in an electrochemical reactor. The effects of cell voltage, pH, airflow and electrode span on the treatment of ammonia-nitrogen in landfill leachate were elucidated. The experimental results indicated that the reactor had positive effect on degradation of ammonia-nitrogen. When pH value of landfill leachate was 7, the cell voltage was 15.0V, and air-flow was 0.08m^3·h^-1 , electrode span was 3.0cm, the removal rate of ammonia-nitrogen can reach 94. 7%. The ammonia-nitrogen removal of the reactor filled with CuO-CeO2/γ-Al2O3 as insulative particle was increased about 19. 4% compared with that of reactor filled with quartz sand applied in project.
出处
《环境化学》
CAS
CSCD
北大核心
2008年第2期177-180,共4页
Environmental Chemistry
关键词
垃圾渗滤液
电-多相催化氧化
催化剂
氨氮
landfill leachate, electro-heterogeneous catalytic oxidation, catalyst, ammonia-nitrogen.
