自然背景富砷地下水影響之農地土壤及地下水砷移除技術試驗與發展計畫
| 中文摘要 | 本計畫依國內外植生復育文獻彙整，考量作物砷移除效果、國內地理氣候條件等，完成五種作物盆栽試驗及兩種作物現地試驗。鱗蓋鳳尾蕨屬植生萃取作物，現地種植六個月後，砷移除量達338 mg-As/m2。圓葉節節菜及玉米，分別在六個月及四個月生長期間，可移除8.8 mg-As/m2及8.4 mg-As/m2，其中玉米粒砷濃度未達穀類總砷限量標準（1 mg/kg），可作為飼料具經濟效益。最後，導入維護農地永續利用、兼顧經濟效益與污染改善的思維，研提富砷地下水影響農地管理策略。 彙整國內外四種主流的砷污染改善技術，並規劃實驗室批次試驗工作，並選定兩種技術完成現地試驗。曝氣除砷及吸附方案，皆可於滿足一分地引灌需水量，處理後水中砷濃度可維持在灌溉水水質標準（50 µg/L），並進行不同方案的操作便利性、成本、廢棄物處置等評析。最後，依我國富砷地下水潛勢區管理現況，描繪污染風險情境，彙整本次試驗技術方案的適用對象、時機與限制條件等，建立一套標準評估作業流程，研提富砷地下水潛勢區之農地用水管理策略。 綜整目前國內外主要的水中砷感測技術，藉由比較其經濟及操作便利性後，選取電化學分析方法，於嘉義縣與雲林縣完成200口民井地下水檢測。本次感測技術與標準方法檢測結果的相關性達0.83，經相關性分析研判感測技術檢測受pH、總有機碳、鐵、導電度影響。最後，歸納技術、成本、法規等可行性，提供未來水質現場快速檢測技術的可用工具之一。 | ||
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| 中文關鍵字 | 土壤砷移除植生復育技術試驗、地下水砷移除實驗室與現地試驗、水中砷快速感測技術應用 | ||
基本資訊
| 專案計畫編號 | EPA-106-GA13-03-A089 | 經費年度 | 106 | 計畫經費 | 17000 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2017/03/06 | 專案結束日期 | 2018/09/05 | 專案主持人 | 劉志忠 |
| 主辦單位 | 土污基管會 | 承辦人 | 李嘉哲 | 執行單位 | 業興環境科技股粉有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 書面正式報告(EPA-106-GA13-03-A089).pdf | 30MB |
Experiment and development of agriculture soil and groundwater arsenic removal technology in naturally Arsenic-rich influenced area
| 英文摘要 | The project conducted the domestic and international phytoremediation lietratures collection. Consideration of plants arsenic removal efficiency, domestic geological consitions etc., five plants and three plants were selected for pot and on-site experiment, respectively. Pteris vittata L. is a phytoextraction plant, while cultivated on-site for 6 monthes, the arsenic removal was 338 mg-As/m2 Rotala rotundifolia L. and Zea mays L. were cultivated for six and four months, 8.8 mg-As/m2 and 8.4 mg-As/m2 were removed, respectively. The arsenic in marize kernel was lower than cereal total arsenic limitation, 1 mg/kg, therefore it could be used as feed. Lastly, consideration of both farmland sustainable use and contamination remediation, the risk management in arseic-riched influenced farmland was imported to discuss the farmland mamangemnet strategies. In this project four main technologies were aggregated and to plan the laboratory and on-site experiemnts. While satisifying of the irrigation water demand, arsenic concentration of effluent groundwater was lower than irrigation water quality, 50 µg/L, for both air exposure and adsorption technologies. Meanwhile, the operation, cost and wastes treatment were evaluated. Finally, the potential risk and contamination senarios of groundwater irrigatied in arenic-riched influenced areas were studied. The potential users, time and limitationds of the success technologies were summaried, also the standard assessment flowchart were constructed for reference in application. In this project, the on site rapid technologies were collected, the electric-chemistry analysis method was chossed by evaluating the economic and operation aspect. The private wells groundwater sampling and detection in ChiaYi county and Yunlin county were conducted, total in 200 wells. The correlation between on site rapid and standard detection was 0.83, the potential influence parameters were pH, total organic carbon, iron and electronic conductivity. Lastly, the technology, cost and regulations feasibility were evaluated. It is expected to act as a useful tool for on site groundwater detection. | ||
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| 英文關鍵字 | Pot and In-situ experiment of phytoremediation on soil arsenic removal, Lab and In-situ experiemnet of groundwater arsenic removal, Application of on-site rapid arsenic detection technology | ||