論説
下水道事業持続性検討モデルと評価に関する研究―実績データに基づく分析と下水道持続性指標の提案―
キーワード:
cost analysis,
population decrease,
sewerage system,
sewerage sustainability index,
time-series simulation model
2020 年 24 巻 p. 30-38
詳細
2020 年 24 巻 p. 30-38
Due to population decrease and society aging, per capita sewerage expenditure is increasing whereas total municipality income is decreasing, which results in poor sustainability of sewerage projects in Japan. For its quantitative analysis, a financial model was developed in which “sewerage sustainability index” was defined as a project balance per municipality income. With this model, sustainability of 86 sewerage projects were evaluated, and sensitivity analysis was carried out for 4 municipalities to compare effects of operating conditions on the index. This analytical methodology can be used in policy making for the future of sewerage projects.
