Talieh Abdolkhani Nezhad; Seyed Masoud Monavari
Abstract
Background and Purpose: The study aims to examine the risks associated with waste landfill projects during the operational phase, with a focus on improving performance and reducing resulting injuries. Conducting environmental risk assessment studies is essential to better comprehend the hazardous criteria ...
Read More
Background and Purpose: The study aims to examine the risks associated with waste landfill projects during the operational phase, with a focus on improving performance and reducing resulting injuries. Conducting environmental risk assessment studies is essential to better comprehend the hazardous criteria and their impact on the environment, as well as to propose effective solutions for control and management. As the central city of Gilan, Rasht receives over 750 tons of waste daily at the Saravan landfill.Materials and methods: This research utilizes Delphi techniques, network analysis process (ANP), and TOPSIS to prioritize and rank the most significant risks in the operational phase of the Rasht waste landfill. The Bow-Tie model is employed to develop control and mitigation strategies.Results: Environmental risks pose the greatest challenges in the Saravan Rasht landfill. Prioritization results, based on safety-sanitary criteria, reveal that the excessive use of repellants, such as insecticides, in the Saravan landfill is of utmost priority. Regarding the environmental criterion, seepage from the bottom of the landfill takes precedence, while the economic-social criterion emphasizes the high costs associated with controlling and developing the waste landfill's health engineering.Conclusion: Identifying and prioritizing risks in the landfill site facilitates the implementation of appropriate solutions for their reduction and control. The criteria influencing risk assessment are subject to constant change. The selection of an appropriate risk identification method enhances the efficiency of the chosen approach and ensures accurate determination of risks within the waste landfill. The bowtie method provides a more realistic understanding of the relationship between factors influencing risk occurrence, resulting consequences, and barriers that can hinder risks during the operational phase.