Toffoletto, L. and Aoustin, E.
Veolia Environnement, France
Many different treatment processes (drying, composting, etc.) and final disposal options (landfill, land application, combustion, etc.) exist for wastewater sludge management. Looking at combinations of technologies, a wide variety of management solutions is thus now available. A software tool was developed to assist sound and sustainable decision-making. The aim of Thermoboues™ is to identify the best available wastewater treatment sludge management solutions in terms of environmental performances, taking into account specific local conditions. The tool also allows identification of environmental improvement levers for each of the WWT sludge management solutions selected. Thermoboues™ is based on an objective and robust environmental assessment methodology (Life Cycle Assessment (LCA)). The environmental performances assessed are the overall energy efficiency (the energy balance) on the one side, and the contribution to climate change (the greenhouse gas (GHG) balance) on the other side. KEYWORDS WWT sludge; Life Cycle Assessment (LCA); Environmental Impact; Global Warming; Energy Efficiency; Sustainable
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