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頁籤選單縮合
題名 | 降低地下水中砷含量之方法比較=Comparison on Various Methods to Remove Arsenic in Groundwater |
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作者 | 廖崇億; 廖倍滋; 陳琦玲; | 書刊名 | 臺灣農業研究 |
卷期 | 65:4 2016.12[民105.12] |
頁次 | 頁420-429 |
分類號 | 443.67 |
關鍵詞 | 地下水; 砷; 化學混凝法; 氧化沉澱法; Groundwater; Arsenic; Ferric chemical coagulation; Oxidation precipitation; |
語文 | 中文(Chinese) |
中文摘要 | 地下水為臺灣中南部主要灌溉水源之一,然因地質因素,地下水砷含量常超過灌溉水質標準 (0.05 mg L^(-1))。為提供農業安全的灌溉水質,並減緩土壤砷的累積,本研究試用多種移除砷之方法,包含化學混凝法、陰離子交換法、電凝法、吸附法,氧化沉澱法等,先在實驗室以小量從現地取回之灌溉水篩選砷移除效率較佳者,進行雲林東勢鄉和北港鎮之現場2 Mg 水量除砷之驗證。試驗與評估結果顯示,以化學混凝法、氧化沉澱法較有效益,依地下水砷濃度與處理方法差異約需1-30 d。但受限於農地不易提供反應的儲水設備空間,故此兩種方法以提供設施栽培或滴灌栽培等少量用水農法較為可行。 |
英文摘要 | Groundwater is one of water resources for agricultural irrigation in Taiwan. However, the arsenic (As) content is higher than the As criteria of irrigation water (0.05 mg L^(-1)) in some locations. The objective of the study is to find out a better removal method to diminish As concentration in groundwater. The lab-scale tests were attempted to compare the effectiveness of different methods such as chemical coagulation, ion-exchange, electro-coagulation, absorption, and oxidation precipitation. Some removal tests based on the lab data were conducted with 2 Mg volume groundwater at field experiments. The results revealed that the ferric chemical coagulation and oxidation precipitation method had higher efficiency in field studies. It required 1-30 d to the whole course of treatment based on different methods. The storage facilities are necessary for field application so that these methods are suitable for greenhouse or drip irrigation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。