請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/5811
標題: 以奈米零價鐵整治地下水中四氯乙烯污染 之模場研究
A Pilot Study for the In-situ NZVI Remediation of PCE-contaminated Groundwater
作者: 黃泓翔
Huang, Hung-Hsiang
關鍵字: 奈米零價鐵
nanoscale zero-valent iron
重質非水相液體
四氯乙烯
non-aqueous phase liquids
Perchloroethene.
出版社: 環境工程學系所
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摘要: 本研究是以新型態奈米零價鐵(NZVI)進行現地四氯乙烯(PCE)污染場址整治試驗,四氯乙烯(PCE)是屬於重質非水相液體(DNAPL),此一類型污染物大部分為高毒性與致癌性,一旦污染地下水體後整治難度相當高,國內早期整治方式成效並不佳。此次研究以GeoNano公司客製化生產的奈米零價鐵(NZVI)為研究對象,並實際於國內污染場址進行試驗,經由奈米零價鐵(NZVI) 注入前後,來比較監測井間的目標污染物濃度變化,以了解此一奈米零價鐵(NZVI)對於目標污染物的降解效果,且觀察其次要監測井中目標污染物的變化,由分析數據上驗證此一整治藥劑的有效影響距離以及是否會衍生副產物造成環境的二次污染。 在本模場試驗中可以證實,此一奈米零價鐵(NZVI)對於目標污染物四氯乙烯(PCE)具有明顯的降解效果,於注藥293小時後降解率大於85%,有效影響距離超過10公尺,並且在降解的過程中沒有明顯的氯乙烯等副產物之增加及監測井有阻塞現象。
This pilot-scale study was aimed to evaluate the efficacy of new stabilized nanoscale zero-valent iron (NZVI) particles in a contaminated site of groun dwater PCE that belongs to one of the dense non-aqueous phase liquids (DNAPLs). DNAPL is mostly carcinogenic or highly toxic. Once DNAPL was released into an aquifer, it could take a very long time to restore the site. Thus far, it has not been seen that a DNAPL site was successfully remediated in Taiwan. This study was carried out through the monitoring of PCE concentrations and it derivatives in wells before and after the injection of NZVI, offered by GeoNano Inc. Total 60 VOCs and Fe concentrations in groundwater were analyzed, which was then used to evaluate the influenced distance and environmental impact of NZVI. The results demonstrated that NZVI could be effective toward the degradation of targeted PCE which achieved 85% removal efficiency in 293 hours after NZVI injection. No other by-products [i.e., vinyl chloride (VC)] were obviously increased. Moreover, the influenced distance could reach more than 10 meter, and the clogging in wells was not appreciably observed.
URI: http://hdl.handle.net/11455/5811
其他識別: U0005-2008201215523100
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-2008201215523100
顯示於類別:環境工程學系所

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