ALMA MATER STUDIORUM UNIVERSITA' DI BOLOGNA SCUOLA DI SCIENZE Corso di laurea magistrale in ANALISI E GESTIONE DELL’AMBIENTE Waste management in Forlì-Cesena province: Life Cycle Assessment (LCA) of Forlì incinerator Tesi di laurea in: Sistemi di Gestione Ambientale, di Politica ed Economia Ambientale Relatore Presentata da Dott.ssa Serena Righi Giada Rocchi Correlatore Ing. Maria Cristina Innocenti III Sessione Anno Accademico 2012/2013 ABBREVIATIONS ..................................................................................................... 5 ABSTRACT ................................................................................................................ 7 1 INTRODUCTION .................................................................................... 8 1.1 Overview on waste management in Europe .................................................................... 8 1.2 Waste legislation in Italy .............................................................................................. 11 1.2.1 Waste management in Forlì-Cesena province .................................................. 12 1.3 Forlì WTE plant ............................................................................................................ 13 1.3.1 Air emissions .................................................................................................... 18 1.4 Incineration residues and their recovery ....................................................................... 21 1.5 An overview on LCA .................................................................................................... 23 1.5.1 Goal and scope definition ................................................................................. 24 1.5.2 Life Cycle Inventory ......................................................................................... 25 1.5.3 Life Cycle Impact Assessment ......................................................................... 27 1.5.4 Life Cycle Interpretation ................................................................................... 29 1.5.5 LCA in waste management ............................................................................... 29 1.6 Waste management LCA state of the art ...................................................................... 30 1.7 Incineration residues state of the art ............................................................................. 40 2 MATERIALS AND METHODS ............................................................ 44 2.1 Goal and scope definition ............................................................................................. 44 2.1.1 Goal ................................................................................................................... 44 2.1.2 System boundaries ............................................................................................ 46 2.1.3 Functional unit .................................................................................................. 47 2.1.4 Allocation ......................................................................................................... 47 2.2 Life Cycle Inventory ..................................................................................................... 48 2.2.1 Data source ....................................................................................................... 48 2.2.2 Assumptions ..................................................................................................... 49 2.2.3 Waste inputs ...................................................................................................... 50 1 2.2.4 Reagents ............................................................................................................ 51 2.2.5 Water ................................................................................................................. 52 2.2.6 Energy ............................................................................................................... 53 2.2.7 Waste outputs .................................................................................................... 53 2.2.8 Incinerator residues data ................................................................................... 54 2.2.9 Software ............................................................................................................ 56 2.3 Impact categories .......................................................................................................... 61 2.3.1 Abiotic Depletion (ADP) .................................................................................. 62 2.3.2 Acidification (AP) ............................................................................................ 62 2.3.3 Eutrophication (EP) .......................................................................................... 62 2.3.4 Freshwater Aquatic Ecotoxicity (FAETP) and Terrestrial Ecotoxicity (TETP) .......................................................................................................................... 63 2.3.5 Global Warming (GWP) ................................................................................... 63 2.3.6 Ozone Depletion (ODP) ................................................................................... 63 2.3.7 Photochemical Ozone Creation Potential (POCP) ........................................... 64 2.3.8 Human Toxicity (HTP) ..................................................................................... 64 2.3.9 Primary Energy Demand, net value (PED) ....................................................... 64 3 LIFE CYCLE IMPACT ASSESSMENT RESULTS AND DISCUSSION ........................................................................................................... 65 3.1 Hotspot analysis on incineration ................................................................................... 65 3.1.1 Processes contributions ..................................................................................... 67 3.2 Relative contributions for each scenario ....................................................................... 75 3.2.1 Base scenario .................................................................................................... 75 3.2.2 BA Road scenario ............................................................................................. 77 3.2.3 BA OdA scenario .............................................................................................. 79 3.2.4 FA Ferrox scenario ........................................................................................... 80 3.2.5 FA Vitrification ................................................................................................ 82 3.3 Comparative analysis of the scenarios .......................................................................... 83 2 3.3.1 Abiotic Depletion (ADP) .................................................................................. 83 3.3.2 Acidification (AP) ............................................................................................ 87 3.3.3 Eutrophication (EP) .......................................................................................... 89 3.3.4 Freshwater Aquatic Ecotoxicity (FAETP) ........................................................ 91 3.3.5 Global Warming (GWP) ................................................................................... 94 3.3.6 Human Toxicity (HTP) ..................................................................................... 96 3.3.7 Ozone Depletion (ODP) ................................................................................... 96 3.3.8 Photochemical Ozone Creation (POCP) ........................................................... 97 3.3.9 Terrestrial Ecotoxicity (TETP) ......................................................................... 98 3.3.10 Primary Energy Demand (PED) ..................................................................... 99 3.4 Normalization ............................................................................................................... 99 3.5 Scenarios discussion ................................................................................................... 100 4 CONCLUSIONS ................................................................................... 105 5 REFERENCES...................................................................................... 108 6 SITOGRAPHY ..................................................................................... 112 7 APPENDIX ........................................................................................... 113 7.1 Plant planimetry .......................................................................................................... 113 7.2 LCIA ........................................................................................................................... 114 7.2.1 Scenarios relative contributions ...................................................................... 114 7.2.2 Impact categories relative contributions ......................................................... 116 3 ACKNOWLEDGMENTS Arrivata alla fine di questo percorso di tesi, durato quasi un anno, sono tante le persone che mi hanno aiutato e supportato. Prima di tutto, ringrazio la mia relatrice di tesi dott.ssa Serena Righi, che durante questo anno mi ha indirizzato verso la giusta metodologia di lavoro, spingendomi a dare il meglio fino alla fine. Lavorare al suo fianco è