Different options for treating the leachate generated by an existing landfill were compared in a life cycle perspective. On-site advanced processes based on reverse osmosis and evaporation were compared to conventional off-site treatment in a wastewater treatment plant. The impact categories most affected by the different options were human toxicity and fresh water ecotoxicity. The evaporation system showed the highest energetic and materials consumption, but the lowest amount of concentrate released per m3 of leachate treated. The highest impact was obtained for the waste water treatment plant, whereas reverse osmosis and evaporation gave quite similar impacts. The key factor for limiting the impact of the evaporation system was the energy supplied by the existing landfill gas energy recovery plant.
Comparing Different Options for Leachate Treatment in a Life Cycle Perspective
DI MARIA, Francesco;SISANI, FEDERICO
2017
Abstract
Different options for treating the leachate generated by an existing landfill were compared in a life cycle perspective. On-site advanced processes based on reverse osmosis and evaporation were compared to conventional off-site treatment in a wastewater treatment plant. The impact categories most affected by the different options were human toxicity and fresh water ecotoxicity. The evaporation system showed the highest energetic and materials consumption, but the lowest amount of concentrate released per m3 of leachate treated. The highest impact was obtained for the waste water treatment plant, whereas reverse osmosis and evaporation gave quite similar impacts. The key factor for limiting the impact of the evaporation system was the energy supplied by the existing landfill gas energy recovery plant.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
