Abstract:Organic solvent waste, a common by-product of industrial production processes, exhibits dual characteristics of high resource value and significant environmental risk, making it a priority in urban solid waste management. To enhance precise control over the full life cycle of organic solvent waste, this study focuses on Chengdu in Sichuan Province as a case study. By integrating statistical data with web-based data, it systematically maps the metabolic pathways throughout the entire life cycle and identifies key challenges in the current management practices. Building upon these findings and in response to practical management needs, this study integrates Geographic Information System (GIS) with Multi-Criteria Decision Analysis (MCDA) to develop a comprehensive evaluation framework comprising nine indicators across environmental, economic, and social dimensions. This framework enables the scientific identification of potential sites for new centralized collection and storage facilities. The metabolic path analysis reveals that the volume of organic solvent waste generated is substantial, while local treatment capacity remains limited, resulting in a significant gap between supply and demand for disposal services. In particular, the inter-provincial and inter-municipal transfer network is complex, involving Shaanxi Province, Chongqing Municipality, and Anhui Province. Transferred organic solvent waste accounts for over 35% of the total volume generated. The study area contains numerous organic solvent waste sources that are highly dispersed spatially, with over 95% being small and micro enterprises producing less than 100 tons annually. Although their combined output accounts for only 11.78% of the total volume, the absence of a unified and standardized collection and transportation system leads to widespread difficulties in securing reliable disposal pathways. Specifically, 54.98% of the waste-generating enterprises have not established consignment treatment relationships with downstream receiving enterprises, and 16.91% of waste is temporarily stored onsite, posing significant risks of environmental hazard accumulation. These findings suggest that enhancing centralized collection and storage capacity is essential for improving the overall management system for organic solvent waste and mitigating associated environmental risks. Suitability analysis results indicate that, across the study area, 11.76%, 42.23%, 41.22%, and 4.79% of the regions are classified as highly suitable, moderately suitable, generally suitable, and unsuitable, respectively, for siting centralized collection and storage facilities. The highly suitable areas are primarily located in Jianyang City, Jintang County, Pengzhou City, and Shuangliu District. Based on a comprehensive analysis of waste generation trends, Jianyang City and Longquanyi District have been identified as priority areas for constructing new centralized collection and storage centers. Overall, the findings provide a scientific basis for urban hazardous waste management and support the advancement of waste-free city initiatives. Close-