在漫灌系统损坏修复後以植物相为指标探讨水质净化效能受到之影响.PDF

在漫灌系統損壞修復後以植物相為指標探討水質淨化效能受到之影響 袁又罡1 黃智敏2 鄭榮翰3 1. 雲林科技大學 環境與安全衛生工程系副教授, 斗六市 64002 2. 雲林科技大學 工程科技所博士生, 斗六市 64002 3. 中山大學 海洋環境及工程所博士生, 高雄市 80424 摘 要：以人工方式建構土地處理系統之漫灌系統，並藉由自然生態系統淨化機制，去除水中營 養鹽污染物。由於系統在植物選擇上採用自然演替之概念，故以植物相演替作為評估系統效能的初 級指標。特別是在系統土石結構因年久失修而部分毀損時，經適當修復後，探討植物相演替變化可 能對水質淨化效能產生的影響。結果顯示，在第一個階段(第 10 至50 天)至第二個階段(第50 至 100 天)中，灌溉水體中硝酸鹽氮、正磷酸鹽之平均處理效率分別提升1.7% 、70.3% 。於實驗末期植物組 成以菊科植物為主要優勢種，且在第60 天後開始開花，對硝酸鹽氮的去除具有明顯的貢獻。此外， 當進流水中之正磷酸鹽濃度偏低時，系統會出現釋磷的現象，導致正磷酸鹽去除效果不佳。 關鍵詞：漫灌系統、植物相演替、水質淨化 Investigation of Reconstruction affect the Water Purification Efficiency of Flood Irrigation System by Using Flora Succession as an Index Yu-Kang Yuan1 Chih-Min Huang2 Rong-Hann Jeng3 (1. Institute of Safety Heath and Environment Engineering, Yulin University of Science and Technology, Douliou 64002) (2. Institute of Engineering Science and Technology, Yulin University of Science and Technology, Douliou 64002) (3. Institute of Marine Environment and Engineering, Sun Yat-sen University, Kaohsiung 80424) Abstract A flood irrigation system was constructed to remove nutrient-based water pollutants through the various natural treatment mechanisms of plants and microorganisms. Species of plants were allowed to proliferate naturally within the system. The succession of flora was then utilized as an index to evaluate the water purification efficiency of the flood irrigation system. From the first stage of observation (50days) to the second stage (50days), the average processing efficiencies of Nitrate Nitrogen (NO3--N) and 3- Ortho-phosphate (PO4 ) were improved 1.7% and 70.3%, respectively. After the 60th day, the Compositae family flouris