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頁籤選單縮合
題 名 | 人工溼地淨化河水受春秋翻混現象之影響=Influences of Spring and Autumn Overturns on Constructed Wetlands Treating Polluted River Water |
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作 者 | 荊樹人; 李得元; 林瑩峰; 王姿文; 莊庭禎; 吳岳憲; 陳丘霈; 徐梓源; | 書刊名 | 嘉南學報 |
卷 期 | 26 2000.11[民89.11] |
頁 次 | 頁10-23 |
分類號 | 445.259 |
關鍵詞 | 春秋翻混現象; 人工溼地; 水生植物; 營養鹽去除; 河水淨化; Spring and autumn overturns; Constructed wetland; Macrophytes; Nutrient emoval; River water purification; |
語 文 | 中文(Chinese) |
中文摘要 | 河水春秋翻混現象係經由河水溫度變化的發生。臺南縣二仁溪河水之春秋翻混現象發生,由秋季進入冬季時的秋翻混變化較為明顯。當此現象發生時,會因河底底泥中污染物的釋出,造成河水水質惡化,致使人工溼地系統淨化水質能力的降低。二仁溪人工溼地系統在水生植物生長茂盛期間對於氨氮、磷酸鹽以及懸浮固體的去除效率均較對照組為佳,而有機物的平均去除率雖然不比對照組高,但卻較為穩定,說明植物穩定的成長對溼地系統污染的去除有十分密切的關係。雖然水生植物可緩衝進流水水質變化對溼地系統的衝擊,不過水生植物在春秋翻混發生期間的生長卻顯著的減緩,甚至死亡。因此選擇能夠克服季節及水質影響的水生植物便成為操作人工溼地淨化污染河水的一個關鍵因素。 |
英文摘要 | The occurrence of spring and autumn overturns of a river is caused by the change of river water temperature. In the Erh-Ren River of Tainan, the autumn overturn between the seasons of fall and winter was more obvious than the spring overturn between winter and spring. When this phenomenon happened, the quality of river water would be worsened due to the release of pollutants from the sediment; henceforth, the treating ability of constructed wetland systems (CW) would be degraded. During the period when macrophytes grew lushly, the CW exhibited better removal efficiencies in nitrogen, phosphorus, and suspended solids than the control experiment system (CE, no vegetation planted). Although the organic removal efficiencies in the CW were not higher than the CE, the values were more stable than the CE. This showed that the stable growth of macrophytes highly correlates to the ability of pollutants removal in the CW. Macrophytes can reduce the impact of the water quality variation to the CW; however, the growth of macrophytes was apparently retarded or even died during the period when spring and autumn overturns occurred. Therefore, selecting a species of macrophytes having the ability to overcome the effects of seasonal change and water quality becomes a key factor for using the CW to purify polluted river water. |
本系統中英文摘要資訊取自各篇刊載內容。