The ISWA (International Solid Waste Association) World Congress is a global meeting which includes high level plenaries as well as technical site visits and a cultural and social programme where waste management professionals, government officials, industry leaders, policy makers, scientists and young professionals meet to exchange views and opinions to advance scientific and technical knowledge for sustainable solid waste management.
IDOM has participated in this congress as speaker, presenting the study named “Comparative Live Cycle Assessment (LCA) and Contribution to Climate Change of household and commercial waste management in Gipuzkoa”.
The presented study consists on an environmental impact analysis of two different types of waste management systems using the Life Cycle Assessment (LCA) methodology. The management systems studied are a landfill-based model versus a centralized model where waste is processed at a Mechanical and Biological Treatment (MBT), Waste-to-Energy (WtE) and Anaerobic Digestion (AD) plants. The LCA methodology was applied to make a comparative analysis of both systems in accordance with ISO 14044 standards. The use of these standards is becoming frequent by multilateral organizations when it comes to assessing the feasibility of investment projects.
The system boundaries have been set at the waste transfer stations and waste disposal sites. The results of the study reveal the importance of transport optimization during the entire waste management cycle. The Environmental performance of the centralized model is seen to be better because of transport optimization, the sub-products obtained (i.e. recyclables, compost and aggregates for road construction), and electricity produced.