Mathematical modeling of energy and emissions in the co-gasification of sewage sludge and municipal solid waste: A case study of Tehran

Document Type : Research Paper

Authors

Department of Mechanical Engineering of Agriculture Machinery, Faculty of Agricultural Engineering and Technology, University of Tehran, Iran.

10.22059/jne.2025.380076.2701

Abstract

With the growth of population, the production of waste and wastewater has also increased significantly, making the management of this huge volume of waste a serious challenge. At the same time as the increase in the production of waste and wastewater, the demand for energy is also constantly growing. Since most of Iran's energy sources are fossil fuels, it is necessary to look for a renewable source of energy. Sewage sludge and waste, as biomass, are suitable sources for energy production. In this research, using mathematical modeling, the production of energy and the emission of gases from the simultaneous gasification of Tehran's waste and wastewater have been investigated. The results show that this method is not only an efficient method for the safe and hygienic disposal of sewage sludge and waste but can also be a sustainable and renewable source of energy production. In addition, by simultaneously gasifying the waste and sewage sludge of South Tehran wastewater treatment plant, about 2000 megawatt-hours of electricity can be recovered annually, which can be used for household and industrial purposes. In addition, this process is capable of processing about 5,000 tons of waste and sludge annually and produces about 2 million kilograms of carbon dioxide equivalent emissions.

Keywords

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