STUDY ON THE LCA EVALUATION OF WASTEWATER TREATMENT

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  • LCA手法を用いた排水処理の評価手法に関する研究
  • LCA シュホウ オ モチイタ ハイスイ ショリ ノ ヒョウカ シュホウ ニ カンスル ケンキュウ

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For the purpose of applying Life Cycle Assessment (LCA) methods to the planning and design of infrastructure, relevant data was collected and analyzed and a method developed for environmental impact assessment. Firstly, information on ten varieties of environmental loads used in the construction and maintenance of infrastructure was compiled using the input-output method to produce a life cycle inventory. Secondly, a method for environmental impact assessment of wastewater treatment facilities was developed by normalizing environmental loads to provide a common scale, thus making possible the comparison of environmental severity in different environmental impact categories. A case study of wastewater treatment facilities, including inventory analysis, was undertaken. From this study, an environmental impact assessment for a typical wastewater treatment facility was carried out and comparable values to be used in the planning and design of such a facility were proposed. Examples of the application of the developed method are also presented.

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