Stabilized Leachate Treatment Using Aerated Electrocoagulation to Reduce Ammonia Nitrogen and Colour Removal

Abstract

Landfill leachate is considered dangerous as it contains countless pollutants. Untreated landfill leachate will damage groundwater resources, the environment and human health. An appropriate treatment is necessary to treat leachate to prevent harm to the environment and humans. The objective in this research is to determine the optimum aerated electrocoagulation under the influence of current density, pH of leachate and aeration rate for ammonia nitrogen and colour removal. The efficiency of removal ammonia nitrogen and colour were compared with Environmental Quality (Control of pollution from solid wastewater transfer station and landfill) Regulation 2009. This research used leachate from Simpang Renggam Sanitary Landfill. In this experiment two electrodes of aluminium and ferum at anode and cathode respectively were used. The highest removal percentage were obtained at 84.93% and 58.82% for the colour and ammonia nitrogen at 200 A/m2 of current density, 1.0 L/min of aeration rate and pH 5. The removal value was still insufficient to fit the environment quality standard. However, to meet the environmental quality standard, integration with other treatments method is suggested.