Life Cycle Assessment of a Wastewater Treatment Plant Focused on Material and Energy Flows |
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Authors: | Jian-Guang Wu Xiang-Yu Meng Xiao-Meng Liu Xian-Wei Liu Zhi-Xia Zheng De-Qian Xu Guo-Ping Sheng Han-Qing Yu |
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Institution: | (1) Department of Chemistry, University of Science & Technology of China, 230026 Hefei, China;(2) School of Civil Engineering, Hefei University of Technology, 230092 Hefei, China;(3) Anhui Academy of Environmental Science Research, 230061 Hefei, China; |
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Abstract: | Life cycle assessment (LCA) was applied to analyze a food-processing wastewater treatment plant and investigate the economic
and environmental effects of the plant. With the long-term operational data of this plant, an inventory of relative inputs,
e.g., flow rate, chemical oxygen demand (COD), and suspended solids, etc., and outputs of the plant, e.g., effluent COD and
suspended solids, methane production, etc., was compiled. The potential environmental effects associated with those inputs
and outputs were evaluated, and the results of the inventory analysis and impact assessment phases of the plant were interpreted.
One feature of this study was the assessment of the treatment plant based on both energy and material flows. Another feature
was the establishment of an assessment model with an integration of plant operating parameters, system recognition and grey
relation. The analytical results are helpful for the design and operation of wastewater treatment plants. |
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Keywords: | |
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