Landfill leachate treatment using electrocoagulation

Xiangdong Li, Junke Song, Jiandong Guo, Zhichao Wang, Qiyan Feng
2011 Procedia Environmental Sciences  
This study investigated the efficiency of electrocoagulation in removing ammonia nitrogen (NH 3 -N) and chemical oxygen demand (COD) from leachate. The paper studies the factors affecting the efficiency of removing NH 3 -N and COD of leachate, such as electrode material ,current density, electrolysis time , Clconcentration and pH of solution. Treatment was carried out in a discontinuous system,and the results show that the electrocoagulation can be applied to leachate pre-treatment. The
more » ... g conditions were current density of 4.96 mA/cm 2 , the raw pH, Clconcentration of 2319 mg/L, operating time of 90 min with Fe electrode, the highest COD and NH 3 -N removal efficiencies were 49.8% and 38.6%, respectively.
doi:10.1016/j.proenv.2011.09.185 fatcat:jleyafsysnbkjgzy7ucppd3e4i