自然背景富砷地下水影響之農地土壤調查及整治技術評估計畫
| 中文摘要 | 本計畫選定歷年地下水砷濃度偏高之濁水溪沖積扇、嘉南平原、屏東平原及蘭陽平原，辦理農地土壤與灌溉水井地下水補充調查工作，結果顯示前述區域因地下水還原態之特性，砷、鐵、錳濃度均有偏高情形，經抽水引灌後進而導致砷累積於土壤中。另彙整農業、水利單位相關統計成果，建立引灌自然環境富砷地下水之水田土壤影響地圖，將農地土壤砷潛勢分為高、中、低三級，並擬定各權責單位建議管理作為。 針對嘉義縣民雄鄉頭橋工業區周邊、嘉義縣朴子市朴子工業區周邊，及雲林縣北港鎮溝皂里三處長期農地土壤砷濃度偏高之樣區，藉由土壤、灌溉水源及渠道底泥等調查數據之比對，歸納此三處農地土壤砷問題應為長期引灌富砷地下水所致。此外，藉由本次執行之農地砷污染來源科學性判識工作經驗，本計畫完成修訂「農地土壤富砷成因科學性判識流程」，使其更符合實務執行上之需求。 此外，為解決國內農地土壤富砷問題，本計畫彙整國內外現地土壤與地下水砷移除技術與應用案例，綜合評估移除成效、成本、操作可行性、便利性、農民意願等，規劃現地試驗方案，以供各單位參考。 | ||
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| 中文關鍵字 | 引灌富砷地下水之水田土壤影響地圖、農地土壤富砷成因判識、現地土壤及地下水砷移除 | ||
基本資訊
| 專案計畫編號 | EPA-104-G112-03-A269 | 經費年度 | 104 | 計畫經費 | 19134.8 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2015/10/16 | 專案結束日期 | 2016/12/31 | 專案主持人 | 劉志忠 |
| 主辦單位 | 土污基管會 | 承辦人 | 張富傑 | 執行單位 | 業興環境科技股份有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 正式報告.pdf | 43MB |
Investigation on Agricultural Soil which Influenced by Arsenic-rich Groundwater, and Remediation Technology Assessment
| 英文摘要 | This project conducted arsenic concentration investigation of agricultural soil and groundwater in Choushui River Alluvial Fan, Chianan Plain, Pingtung Plain and Lanyang Plain which had high groundwater arsenic concentrations over the years. The results showed that due to the reducing environment in aquifers, high concentrations of Fe, Mn, As were released to groundwater in aforementioned areas. Through intensive use of groundwater for irrigation, lots of arsenic were accumulated in soil. Therefore, agricultural and hydrological analysis database were collected for establishing “Potential influenced areas of paddy soils in geogenic As-rich groundwater irrigation zones,” and potential were classified into high, middle and low levels. Additionally, the management suggestions by competent authorities were already proposed. Agricultural soil arsenic concentration were high for a long period of time at Touciao and Puzih industrial zone in Chiayi County, and Gouzao Village in Yunlin County. The origin of high soil arsenic concentration was concluded to the long-term irrigation of arsenic-rich groundwater by soil, groundwater, and drain sediment data analysis. According to the experience in figuring out the origin of high agricultural soil arsenic concentration, this project had revised “Scientific procedure of evaluating the origin of agricultural soil arsenic concentration” for the purpose of having a better practical implementation. In addition, in order to completely solve the problem of high arsenic concentration in agricultural soil, this project collected in-situ soil and groundwater arsenic removal technologies and case studies. Through evaluating the removal efficiency, cost, operational feasibility, convenience, stakeholders’ expectations, etc., the recommended soil and groundwater arsenic removal technologies were selected. Moreover, these technologies comparisons and experiments were intended for each responsible authority for further demonstrations and promotions. | ||
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| 英文關鍵字 | Potential influenced areas of paddy soils in geogenic As-rich groundwater irrigation zones, Scientific procedure of evaluating the origin of agricultural soil As concentration, In-situ soil and groundwater As removal | ||