本場址自民國90年發現三氯乙烯污染後，陸續執行污染改善工作，經 92~94 年間以高錳酸鉀執行現地化學氧化法後，雖污染濃度低於管制標準，但停止注藥後全場區污染濃度回升，回升最高污染濃度約4.0 mg/L。而後為避免污染擴散至場區外，遂於98~100年開始進行地下水污染擴散控制，可有效控制污染團於場區內，但對低污染濃度去除效果有限，因此於101~103年挑選2區高污染濃度進行生物復育模場試驗，灌注生物藥劑後可促進脫氯菌群進行脫氯作用，以降低污染濃度。本研究目的為：(1)利用水力控制進行場址污染擴散控制，以限制污染範圍且避免擴散至下游區域；(2)污源生物復育：本研究選擇一生物復育試驗場址，針對南側GW1井，研擬本場址長期整治方案，以增進地下水控制成效；(3)污染範圍監測：配合地下水污染改善方案之進行，選擇合適既有監測井，定期檢測地下水水質，研擬場址長期監測研究以評估污染範圍變化。
本研究乃進行全場區生物復育工作，採取分階段生物藥劑灌注，並搭配地下水污染控制，依106年9月分析結果，目前全場區地下水TCE濃度已低於管制標準，其中污染源GW1井105年2月地下水TCE濃度自0.107 mg/L，至106年9月已無檢出TCE，約18個月無濃度回升情形；此外，計算地下水污染範圍變化，在105~106年全場區地下水TCE濃度>0.05 mg/L污染面體積中，三氯乙烯污染體積自349~702 m3降至0 m3，顯示全場區地下水污染濃度及污染體積已獲得改善，且地下水污染物濃度低於管制標準，符合污染削減與污染範圍控制之研究目標。本研究成果，經污染源生物復育後，增強脫氯菌群生長，使得地下水污染擴散控制，並可達到發展生物整治系統以提升TCE還原脫氯效率之目的。

TCE contamination was discovered in 2011 at the research site, and the remediation has been processed since then. After applying KMnO4 for ISCO between 2013 and 2015, TCE concentration reduced under maximum contaminant level (MCL). However, after stopping injecting substrate, concentration has found bounce back at 4.0 mg/L. To avoid TCE spreading, ground water diffusion control action had been applied between 2009 and 2011 to stopping TCE spreading out of research site. However, the effect to low contamination concentration is limited. Therefore, between 2012 and 2014, two high contamination concentration sites had been selected to apply bioremediation method. Substrate injection can stimulate Dehalococcoides to perform reductive dechlorination of chlorinated ethenes. In that case, concentration will decrease.
Objectives of this research included the following (1) Using hydraulic control method to stop contamination from spreading outer research site. (2) Bioremediation: focusing on south of research site at GW1 well to assess long term remediation plan to improve the effective of remediation. (3) Contaminated area monitoring: in conjunction with groundwater contaminated improvement program. Selecting appropriate and existing monitoring wells to exam groundwater quality regularly to develop long term monitoring plan to assess the changes of contamination coverage.
The study applied bioremediation method in the entire research site, adopting phased substrate injection with groundwater contamination control. Result on September 2017 showed the TCE contamination concentration were under MCL. GW1 which showed TCE concentration at 0.107 mg/L on February 2016 examine none TCE concentration on September 2017 and last 18 months. Additionally, the changes of contamination coverage had been calculated. Between 2016 and 2017, TCE contamination were lower than 0.05 mg/L. in contamination coverage, TCE contamination volume decreased from 349~702 m3 to 0 m3 indicated the contamination concentration and volume were reduced and under MCL. Consequently, effective of reducing concentration TCE contamination and control contamination coverage were successful in this study. The results indicate that after performing bioremediation process in contaminated source area, the growth of Dehalococcoides can be enhanced, the diffusion of target contaminants in groundwater can be controlled, and the development of bioremediation system to improve the efficiency of TCE reductive dechlorination can be achieved.

論文審定書 i
誌謝 ii
摘要 iii
Abstract iv
目錄 v
圖目錄 vii
表目錄 ix
第一章 前言 1
1.1 研究緣起 1
1.2 研究目的 1
第二章 文獻回顧 3
2.1 地下水污染及含氯有機污染物種類 3
2.1.1 三氯乙烯之物理化學特性 5
2.1.2三氯乙烯傳輸途徑 7
2.2 地下水污染整治技術 8
2.2.1 物理及化學處理技術 8
2.2.2 現地生物復育技術 9
2.3 三氯乙烯之生物降解 11
2.3.1 好氧生物降解 11
2.3.2 厭氧生物降解 12
2.4 不同油品及基本特性 13
2.4.1 營養基質種類及特性 13
2.4.2 界面活性劑的種類 14
第三章 研究方法 17
3.1 研究執行流程 17
3.2 場址污染現況調查 18
3.2.1污染調查 18
3.2.2 污染範圍控制 23
3.3 地下水污染擴散控制 28
3.4 生物復育技術 35
3.5 成果驗證規劃 38
第四章 研究成果 40
4.1 糖蜜灌注成果 40
4.2 松下液態藥劑灌注成果 42
4.3 乳化油灌注成果 55
4.4 地下水質檢測成果 58
第五章 結論與建議 59
5.1 結論 59
5.2 建議 60
參考文獻 61
附件
博、碩士學位考試口試委員意見修正書 68

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