A study on combination of biochar and activated sludge for removing ammonium from low C/N ratio wastewater

This study, therefore, aimed to investigate the application of biochar from agricultural wastes to remove the excess nitrogen in domestic wastewater. In particular, this work examined the utilization of biochar obtained from coffee husk pyrolyzed at 350 oC to adsorb ammonium. Besides, adding biochar could be a simple and effective method for the initiation of activated sludge granulation to facilitate the treatment of low C/N ratio wastewater. In this work, ammonium removals by both biochar (as adsorption process) for initial stage; and microbial sludge (as nitrification/denitrification process) were evaluated in details.
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A study on combination of biochar and activated sludge for removing ammonium from low C/N ratio wastewater