Research Article
Impact Evaluation of Wastewater Treatment Based on the Anaerobic Digestion of Sewage Sludge Using the Life Cycle Assessment Method
Table 3
Effect class weighting of South Tehran’ treatment plant system using the ReCiPe 2016-midpoint method.
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(1) global warming (kg CO2 eq), (2) depletion of the stratospheric ozone layer (kg CFC11 eq), (3) ionizing radiation (kBq Co-60 eq), (4) ozone formation, human health (kg NOx eq), (5) formation of fine particles (kg PM2.5 eq), (6) ozone formation, terrestrial ecosystems (kg NOx eq), (7) acidification of the earth (kg SO2 eq), (8) freshwater eutrophication (kg P eq), (9) marine eutrophication (kg N eq), (10) terrestrial environmental toxicity (kg 1,4-DCB), (11) environmental toxicity of fresh water (kg 1,4-DCB), (12) marine environmental toxicity (kg 1,4-DCB), (13) carcinogenic toxicity in humans (kg 1,4-DCB), (14) noncarcinogenic toxicity in humans (kg 1,4-DCB), (15) land use (m2a crop eq), (16) lack of mineral resources (kg Cu eq), (17) lack of fossil resources (kg oil eq), (18) water consumption (m3). Tot, total; PWW, purified wastewater; PF, phosphorus fertilizer; Amm, ammonia; NF, nitrogen fertilizer; CP grid, consumed power (grid); CP CHP, consumed power (CHP); Cl, chlorine. |