Identification and leveling of new technologies for organic fertilizer production from municipal solid waste

Today, in metropolitan areas, principled and hygienic waste management is one of the most important issues in the field of urban management. With the growth of science and technology, it has become clear that waste recycling is one of the most appropriate options in waste disposal. On the other hand, a significant amount of municipal solid waste is organic waste. If this waste is converted into organic fertilizer, which both helps to preserve the environment and creates employment, the final product, which is compost fertilizer, can be used in agriculture to improve texture. Soil is used to increase storage capacity and increase soil organic matter and is also used as a suitable alternative to chemical fertilizers. Due to the importance of this research, it has evaluated the most common technologies for fertilizer production from municipal solid waste. The technologies considered in this research are the vermicomposting method, Windrow composting, and in-vessel composting. To comprehensively study these technologies, two methods, VIKOR and simple additive weighting (SAW) were used. The results of this study showed that among the selected technologies, vermicomposting technology obtained the highest score in both methods of multi-criteria decision making model and was selected as the best option for fertilizer production from municipal solid waste. In-vessel composting technology and Windrow composting came in second and third, respectively.