Characterization of Nitrogen during a Short-Term Biological Pretreatment of MSW

Abstract:

Biological pretreatment of municipal solid wastes (MSW) has been proved to be a practice capable of reducing the ammoniacal nitrogen content in the leachate. In this study the transformations of nitrogen were investigated during a short-term biological pretreatment of mixed MSW by using static pile composting. The performance of a large-scale biological treatment process had been studied on about 100 tons of raw municipal solid waste for 16 days. MSW samples were collected at different stages of the process and analyzed to investigate the evolution of nitrogen forms. The results indicate that the ammoniacal nitrogen concentration increased during the first 3 days and decreased subsequently. Ammonia volatilization likely contribute to the reduction of the ammoniacal nitrogen content assessed. The total nitrogen content reduce from 5.5g/kg to 2.1g/kg and the production of nitrites and nitrates is negligible during pretreatment. This data indicate that 16 days of static pile composting with low aeration would be sufficient.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2836-2840
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2836
• Online since: June 2014
• Authors: Ting Liu*, Lie Yang, Jia Wang
• Keywords: Biological Pretreatment, Municipal Solid Waste, Nitrogen, Short-Term

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