Analysis of Urban Waste Management Using System Dynamics Approach

Nowadays, the increase in waste generated by citizens and its consequences, including environmental pollution, human and animal health endangerment, and depletion of natural resources, have become fundamental issues and challenges in Isfahan. The research proposes a comprehensive and systemic model to offer effective solutions for reducing waste volume by applying a system dynamics approach within Isfahan. In order to achieve this objective, the study first identified and localized the influencing factors on waste generation within the city by reviewing pertinent literature and research background, as well as consulting experts and officials from Isfahan. Subsequently, the relationships between these factors were delineated using insights from 32 experts and officials from Isfahan, who were selected through a snowball sampling. A causal loop diagram was constructed based on the identified relationships among factors affecting waste generation. Moreover, a stock-and-flow diagram was developed based on information extracted from municipal records of the identified variables' quantities and values. The results of this study demonstrate the significance of investing in waste collection equipment and advertising to raise citizens' awareness and reduce waste production in Isfahan. These efforts play a crucial role in decreasing the overall volume of urban waste. Moreover, they contribute to the saving and sustainability of resources while enhancing the city's beauty, ultimately attracting more tourists.