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年度	100	專案性質	實驗性質
專案類別	模場試驗	研究主題	整治
申請機構	朝陽科技大學	申請系所	環境工程與管理系
專案主持人	章日行	職等/職稱	教授
專案中文名稱	以近實場規模之現地電動力技術整治鉛污染農地之研究
中文關鍵字	鉛污染土壤、電動力法、實場整治
專案英文名稱
英文關鍵字	Pb contaminated soils, Electrokinetics, Real-scale remediation
執行金額
執行期間	2011/11/26 至 2012/11/25
計畫中文摘要	重金屬污染農地快速有效的整治方式具有極高研究及應用價值，特別是模場 現地污染整治的試驗更顯得重要。本研究以近實場規模之電動力法 (Circulation-Enhanced Electrokinetics, CEEK)整治南投市某處鉛污染土壤，企盼藉由本 計畫了解近實場規模之電動力法技術的關鍵因子，進而掌握最具去除效益的操作 參數，最後獲得此技術的成本效益。 本計畫進行63 天污染土壤整治及颱風淹水，主要發現及結論如下：  本試驗污染土壤中鉛去除率可達約64%，平均土壤鉛濃度可從7,246 mg/Kg 降至約2,612 mg/Kg，成果與過去在模場及其他鉛污染場址的去除 效率非常接近，充分說明本技術CEEK 在現地整治的應用潛力。從土壤 中移除的鉛可藉由電鍍作用，將鉛電鍍於陰極板上。  本系統 CEEK 對於1.0 平方公尺的鉛污染土壤每去除1%所需的操作電費 約為 6.55 元，此數據與過去模場試驗的8.82 元頗為接近。  本電動力系統 CEEK 在近實場規模操作下，土壤的pH 值及導電度維持在 中性及穩定的狀態，呈現本系統對土壤衝擊低。  本電動力系統 CEEK 在近實場規模操作下，系統電流及電壓維持在穩定 的狀態。同時，系統溫度接近大氣氣溫，呈現本系統的穩定性佳。  本電動力整治方法處理後的土壤肥力略降，需要添加適當肥料方能回復 肥力。  近實場規模計畫中，以木板及防水漆製作的循環渠道，受土壓及試驗期 間的踐踏，逐漸變形而發生操作液的滲漏。未來應採用抗壓的循環水管 改善之。  由於鉛與 EDTA 的錯化物須經較高的電壓及較長時間電鍍，才能將土壤 中的鉛電鍍於陰極板的表面。若電鍍效果不佳，應增設廢水處理設備。
計畫英文摘要	The fast and effective remediation techniques for cleaning agricultural lands contaminated by heavy-metals are with high potential to be studied. The investigation of the in-situ remediation in pilot scale is especially important. This work applied the Circulation-Enhanced Electrokinetics (CEEK) in near-real scale to clean the lead contaminated soils in Nantou City. We hope to find out the critical factors of the CEEK technique in near-real scale. To obtain the appropriate operational parameters makes the CEEK technique cost-effective. After 63-day treatment, several conclusions and suggestions can be drawn:  The lead removal efficiency was about 64%; the average lead concentration was decreased from 7,246 mg/Kg to 2,612 mg/Kg. This result was close to the previous that in pilot scale and in other contaminated site, which demonstrates the high potential application of CEEK. The removed lead could be electroplated on the cathode.  The operational cost of electricity for removing 1% lead was 6.55 NT dollars in the area of 1.0 m2 , which was close to that in pilot scale (8.82 NT dollars)。  The pH and electrical conductivity of soils could maintain neutral and stable situation, which indicated the little impact on soils under such CEEK process.  The electrical current and voltage could maintain stable situation, which presented the great stability of the CEEK process. In addition, the temperature of operational solution was close to atmospheric temperature.  The fertilizerbility of the treated soils was slightly less than that of the untreated soils. This means the addition of fertilizer is necessary.  The wooden circulation channel was gradually cracking due to the soil pressure, which resulted in the leakage of working solution containing lead. The circulation pipes against high pressure are suggested to use in the future.  If the removed lead was electroplated on the cathode with low electricity efficiency, it is necessary to integrate a wastewater treatment plant with EK system.