工業區未設置污水處理廠，廠商產生之廢水經處理後，排至工業區雨水道。若能即時監測雨水道水質，方能管理廠商廢水處理狀況。本研究藉由設置自動監測系統，取得放流水質溫度、pH及導電度即時資料，並利用監測所得影像與水質資料收集及分析，進行放流水質趨勢與成本之效益評估。首先採用頭份工業區為試驗區，安裝5處監測站，測試系統穩定性，其次進行自辦或委外辦理之成本比較，分析結果發現，委外辦理服務費用成本為每年273,503元，而自辦需購買設備，若設備耐用4年，則所需成本差異值最小，若設備耐用年限小於4年，則以委外辦理成本較低。 For no sewage treatment plant, the wastewater produced by the manufacturer is discharged to the rainwater channel of the industrial area after treatment. If the water quality of drainage channel can be real-time monitoring, the wastewater treatment of manufacturer can be controlled .This study developed, an automatic monitoring system to obtain the real-time data including temperature, pH and electric conductivity of the discharged water. Monitoring image and water quality data were collected, to evaluate the benefits of released water quality trends and costs . Firstly, Toufen Industrial Park was selected to be the field to install 5 monitoring stations for the system stability test. Secondly, the cost between self-management or outsourcing were compared. Results shows that the cost per year by outsourcing was N.T. 273,503. Self-management should pay the fee for equipment. If equipment can be used for four years, both of costs are similar. If the equipment can be used smaller than four years, outsourcing will be cheaper than self-management.
