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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/22887

    標題: 利用超音波換能器技術處理溫泉管線中碳酸鹽結垢之可行性研究
    The Feasibility Study of Ultrasound Transdusor Applied to Decarbonating Process of Pipeline Scaling in Hot Spring Water
    作者: 謝明裕
    貢獻者: 萬孟瑋
    關鍵字: 結垢
    日期: 2009
    上傳時間: 2010-06-08 13:58:05 (UTC+8)
    摘要: 台灣地區天然條件相當豐富,造就了珍貴的溫泉資源,其溫泉泉質種類繁複不一,但大致可分為以氯離子為主的氯化物泉、以碳酸根離子為主的碳酸氫鹽泉、以硫酸根離子的硫酸鹽泉,其中又以含碳酸根離子成份的泉質,為主要之溫泉成份。而溫泉水在管線輸送之過程,容易因富含礦物質之泉質造成管線、儲存設備結垢之情形,若長時間不處理維護,即可能導致管線爆裂、腐蝕、棄置、泉質惡化等相關問題,造成人力資源浪費、增加經營成本。而目前最常見之結垢抑制辦法為添加複磷酸鹽類,作為結垢物之抑制、清除,但由於其成份含有氮、磷,一但排入水體,亦會造成水體負擔,影響生態平衡。
    There were three types of hot spring water in Taiwan, including chlorine salt type, carbonate type and sulfate salt type. When the hot spring water was delivered by pipeline system, the carbonate was easily precipitated in the pipeline and storage system, which considered as an essential problem for the owners of hot spring industry. These scaling problems corroded and damaged the pipes, leading the potential explosion problems. The major treatment methods were adding the chemical agents that contained the phosphorous and nitrate to inhibit the scaling, which caused the serious eutrophication problems in our natural environment. Replacing the pipes frequently was considered as a way to solve problems and free for chemical pollutants. However, the maintenance cost was huge and the wasted pipes were considered as an environmental issue. Therefore, in order to solve scaling problems with green technologies, this study applied ultrasound energy to the simulation process of hot spring delivery system. The increase/decrease of pH values were determined and the before/after concentrations of calcium ion were analyzed. Thus, the potential formation mechanisms of scaling in hot spring water and the performance of ultrasound assisted inhibition process were carefully examined.
    The performance of ultrasound assisted inhibition process: The results indicated that ultrasound assisted inhibition process of scaling problem was depended with flow rate and temperature. When the control system was under lower flow rate and temperature, the performance functioned well in inhibiting the scaling problems. However, the performance was not obvious under higher flow rate and temperature. The experimental results of this study are insufficient to conclude the optimization control conditions of ultrasound assisted inhibition process, which needs further researches and studies to fulfill the requirements.
    關聯: 校內外完全公開 ,學年度:97, 119頁
    Appears in Collections:[環境工程與科學系(所)] 博碩士論文

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