<strong>Systems</strong> <strong>Analysis</strong> <strong>of</strong> <strong>Zaragoza</strong> UWS Guillermo Penagos Annex 9. Calculation <strong>of</strong> Environmental Impacts from Transportation Energy consumed and CO 2 emissions Total mass <strong>of</strong> chemical products and sludge per year at the different UWS facilities can be obtained from previous annexes. Factors for CO 2 emissions and energy consumption derived from transportation <strong>of</strong> products in Heavy trucks where obtained from Thonstad (2005): CO 2 emission factor (g/ton/km) = 69 Energy consumption factor (Kwh/ton/km) = 0.22 Distances between facilities and production companies (for chemical products) and between facilities and disposal sites (for sludge) were provided by the Local Agenda 21 Office <strong>of</strong> <strong>Zaragoza</strong>. Total annual mass (ton) DWTP Cartuja Almozara Paper mills Year Chlorine Alum PAC Sludge as Dry matter Iron Chloride Sludge as ash Sludge Sludge 2001 3,365 10,045 0 0 5,065 4,754 1,077 1,139 2002 2,974 9,090 0 3,489 4,843 4,640 1,112 1,139 2003 2,909 9,331 45 7,594 4,692 5,113 1,129 1,139 2004 3,074 9,840 337 5,995 4,681 3,698 1,240 1,139 2005 2,237 7,526 178 5,974 5,042 4,048 1,231 1,139 2006 2,456 5,989 179 7,674 4,763 4,135 1,073 1,139 Distance (km) 25 32 18 21 18 21 15 21 Resulting factors from multiplying distances CO 2 1725 2208 1242 1449 1242 1449 1035 1449 Energy 5.5 7.04 3.96 4.62 3.96 4.62 3.3 4.62 The values for Energy consumption are the following: Total energy consumption from transportation <strong>of</strong> sludge and chemical products (Kwh) DWTP Cartuja Almozara Paper mills Year Chlorine Alum PAC Sludge as Dry matter Iron Chloride Sludge as ash Sludge Sludge 2001 18,508 70,714 0 0 20,057 21,965 3,555 5,264 2002 16,356 63,992 0 16,120 19,177 21,439 3,669 5,264 2003 15,997 65,692 178 35,082 18,579 23,622 3,726 5,264 2004 16,906 69,274 1,333 27,696 18,539 17,084 4,093 5,264 2005 12,305 52,984 704 27,600 19,968 18,701 4,064 5,264 2006 13,506 42,162 708 35,454 18,863 19,104 3,539 5,264 92
<strong>Systems</strong> <strong>Analysis</strong> <strong>of</strong> <strong>Zaragoza</strong> UWS Guillermo Penagos The values for CO 2 emissions are the following: Total CO 2 emissions from transportation <strong>of</strong> sludge and chemical products (ton) DWTP Cartuja Almozara Paper mills Year Chlorine Alum PAC Sludge as Dry matter Iron Chloride Sludge as ash Sludge Sludge 2001 5.8 22.2 0.0 0.0 6.3 6.9 1.1 1.7 2002 5.1 20.1 0.0 5.1 6.0 6.7 1.2 1.7 2003 5.0 20.6 0.1 11.0 5.8 7.4 1.2 1.7 2004 5.3 21.7 0.4 8.7 5.8 5.4 1.3 1.7 2005 3.9 16.6 0.2 8.7 6.3 5.9 1.3 1.7 2006 4.2 13.2 0.2 11.1 5.9 6.0 1.1 1.7 93