Plant biosolids composting of wastewater treatment

Abstract

It was evaluated the bio solid composting in Cañaveralejo Wastewater Treatment Plant in Cali - Colombia. Although the process was viable, the bulking agent (BA) incorporation improved the final product C/N relation. Municipal yard trimmings and sugar cane waste were the best bulking agent and amendment material, respectively. The B:BA:AM optimal relation, on percent, was 72:10:18. In terms of waste management and considering the increasing on the municipal wastewater treatment plants number, this study showed that the bio solid compost could be considered as a material with agricultural potential use; additionally when the option is just the bio solid final disposition, the composting process can reduce its disposal volume at 70%.