A Multi-Objective Optimization Model of Health, Safety, and Environmental Risks of Coastal Landfills (A Case Study of the Coastal City of Bandar Abbas)

The increasing development of urban life is one of the fundamental challenges in urban management of waste disposal. Solid municipal waste is one of the major problems of governments and urban planners worldwide, especially in coastal cities. This study aimed to design of an advanced linear planning algorithm for coastal landfills with a focus on safety, health, and environmental risks.

This is a qualitative study. Multi-objective optimization presents a mathematical model by evaluating the three risks of health, safety, and environment. First, the data were collected using interviews and qualitative analysis, and then in the second stage, the analysis was presented using model linear planning.

In the risk assessment of the landfill site, the presented computational results can be found that stable models provide unfavorable answers compared to definitive models. This is a natural issue; since in stable models, the worst case scenario is considered to achieve the optimal solution, and therefore the resulting answers are always unfavorable compared to the definitive models.

By analyzing the risk assessment at the landfill site, the causes of accidents and complications resulting from work in this place include unsafe practices or unsafe and unsanitary conditions. In fact, trying to create and improve health, safety, and environmental conditions of landfills in Bandar Abbas city and the increase in reliability confirmed that these two factors are the secondary causes of accidents. The root causes can be considered as a defect in the management system of the landfill site.