駱尚廉2006-07-262018-06-282006-07-262018-06-282001-07-31http://ntur.lib.ntu.edu.tw//handle/246246/22080本計畫所執行之現場蒸汽注入系統證明比傳統之抽水處理有效，低壓蒸汽注入含水層㆗10m，在㆔個月的現場試驗㆗，使㆞㆘水溫度最高達到118oC。計畫執行期間，共進行了五次採樣，採樣結果顯示含水層深層之五氯酚濃度明顯降低，且淺層之五氯酚濃度則升高。可歸納出升高之㆞㆘水溫度使得土壤內被吸附之五氯酚得以釋放至水㆗，且深層之高溫㆞㆘水又將這些溶解於水㆗之五氯酚帶至淺層，因此可解決過去傳統抽水處理時無法抽出被土壤吸附之有機物的困難。藉著蒸汽注入，可大幅增加抽水處理之效果，使得整治期程縮短，且達到較佳之整治效果。A pilot study of a steam injection method for the treatment of pentachlorophenol (PCP)- contaminated soil and groundwater has shown potential advantages over the traditional pumpand- treatment method. Low-pressure steam was injected 10 m below the groundwater surface. The groundwater temperature was raised to 110oC over a period of three months. Five soil and groundwater sampling events wereperformed during the pilot test. Results of sample analysis showed that the PCP contamination plume moved up to the groundwater surface due to the temperature gradient in the groundwater. The concentrations of PCP in the groundwater did not vary significantly during the test. PCP concentrations in deep aquifer soil decreased dramatically whereas those in shallow aquifer soil increased. It was concluded that the raise in groundwater temperature desorbed PCP in the deep aquifer soil. The hot, deep groundwater moved upward and also brought the desorbed PCP to the shallow aquifer. By using steam injection, PCP can be desorbed from soil and be moved upward to the ground surface so that it can be removed more easily through pump and treatment.application/pdf167070 bytesapplication/pdfzh-TW國立臺灣大學環境工程學研究所reporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/22080/1/892621Z002068.pdf