- 學位論文
新營工業區廢水感測網設置之成本效益評估
Cost and Benefit Assessment of Setting Wastewater Sensor Web in Sinying Industrial Park
摘要
臺灣工業發展在經濟成長及環境保護等兩方面皆扮演關鍵性角色，環保意識抬頭之風潮下，對於工業區及大型事業造成之廢污水排放越來越重視。近年來國內開始發展水質自動監測（視）及連線傳輸作業應用於工業區放流水，惟目前法規僅要求特定工業區及大型事業於污水處理設施放流口設置水質水量自動監測設施，未能防範工業區內違法偷排之不肖廠商。本研究針對三種工業區感測網設置方案，即分別在污水處理廠放流口、污水管線匯流點及雨水下水道匯流點設置感測網，以淨現值法評估各方案之經濟可行性，並以敏感度分析各方案主要因子對淨現值之影響程度。分析結果顯示，在三個方案中以在污水管線匯流點設置水質自動監測網最具有經濟可行性，其淨現值為最大且為正值，其餘兩感測網設置方案之淨效益上均為負值，屬經濟不可行方案。而三個方案同時實施之總淨現值仍為正值，仍具經濟可行性。敏感度分析結果顯示，三方案之最敏感因子分別為感測網設置成本、污水處理收費金額及稽查罰鍰收費金額。
並列摘要
Industrial development in Taiwan plays a key role in both economic growth and environmental protection. Because the environmental consciousness is awakening in these years, people pay more attention to wastewater draining from industrial parks and major industries. Recently, water quality automatic monitoring and information transmitting systems were applied to wastewater effluent from industrial park. However, the law only request specific industrial parks and major industries to set up wastewater quality automatic monitoring system. It can’t prevent some plants in industrial park from draining illegal. Considering three options for setting sensor web, respectively at outlets of wastewater plants, junctions of wastewater sewers and junctions of storm sewers, economic feasibility by using the net present value method, NPV, and sensitivity analysis were investigated in this study. As a result, the best program is to set up water quality automatic monitoring system at junctions of wastewater sewers. Its net present value is largest and positive. The other two programs get negative NPVs. If three programs could be set up altogether, the total NPV will still be positive and remain economically feasible. The results of sensitivity analysis showed that the most sensitive factors for three programs are setting cost of sensor web, the service fees of wastewater treatment plant and the fines for inspection, respectively.