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年度	99	專案性質	非實驗性質
專案類別	模場試驗	研究主題	底泥
申請機構	國立中興大學	申請系所	環境工程學系
專案主持人	張書奇	職等/職稱	助理教授
專案中文名稱	二仁溪污染底泥整治模場試驗計劃
中文關鍵字	二仁溪；底泥；模廠試驗；多氯聯苯；多還芳香烴；重金屬
專案英文名稱	Remediation pilot study of the contaminated sediment in Er-Ren River
英文關鍵字	Er-Ren River, sediment, pilot study, polychlorinated biphenyl, polynuclear aromatic hydrocarbons, heavy metals
執行金額
執行期間	2010/12/29 至 2011/12/28
計畫中文摘要	河川底泥在生態系中扮演重要功能，一旦遭受持久性污染物之污染，污染物可循食物鏈進入人體及動植物體內，造成人體健康危害與生態系損害。以我國目前污染嚴重之二仁溪為例，其污染源分佈上游以畜牧廢水為最大宗，下游以燃燒廢五金、電鍍、酸洗、廢油為大宗，其下游灣裡一帶即為當年廢五金露天燃燒地區，廢氣中粒狀物質沉降及廢金屬回收酸洗廢水直接排入河川中。最引人注意之污染物包括重金屬、多環芳香烴類、多氯聯苯等。多環芳香烴類已達有害程度，多氯聯苯明顯超過標準，重金屬污染以鉻與砷有顯著風險，應進 行復育，但經濟有效之復育技術付之闕如。本計畫之目的在於開發低成本高效率之奈米材料進行生物、物理化學整合之復育，去除底泥中之重金屬、萘與Aroclor1242。整體而言，本計畫於現地模場試驗設施完成後執行五個月試驗之初步成果顯示積極式工程復育之效果(最佳者重金屬移除 22.6%，萘移除100%，Aroclor1242 移除 91.4%) 普遍優於自然回復（重金屬移除 7.2%，萘移除 99%，Aroclor1242 移除 61.4%），單獨添加奈米氧化鐵或奈米乳化液不如同時添加之效果，本計畫已確認中低加量之乳化液與氧化鐵之配合為一可行之低成本高效益底泥整治技術，本計畫衍生效益為提昇本土河川底泥整治水準，了解實場整治之技術問題與克服途徑，並能保護底泥生態品質及國人健康。
計畫英文摘要	Sediments play a vital role in ecosystems. Once contaminated by persistent pollutants, the contaminants can gain access to human, plants, and other animals. This will increase human health risk and degradation of natural ecosystem. Taking the heavily-polluted Er-Ren River as an example, the sources at the upstream are farming and livestock raising, while at the downstream scrap metal burning, metal plating, acid wash, and waste oils. Historically, the vicinity of Er-Ren River is the notorious site for scrap metal open burning. The particulate matters in the smoke and the acid wash waste water may either deposit or settle down in the river sediments. Among these pollutants, the concentration of polynuclear aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), arsenic, and chromium are either above or near to the regulated standards. The sediments in this river is in a urgent demand for a cost-effective technology to reduce the pollutant concentrations. Here we proposed to compare the removal of different approach, natural recovery, magnetite nanoparticle adsorption, nanoemulsion addition for biostimulation, and integrated remediation. The results showed that engineering intervene is better than natural recovery. The best of engineering intervene approaches can remove PAHs up to near 100%, PCBs at around 91.4% and heavy metal up to 38.8% while the natural recovery can remove 99% of PAHs, 61.4% of PCBs, and 7.2% of heavy metals. The results suggest that addition of median to low quantity of soybean oil nanoemulsion and low quantity of magnetite nanoparticle could be a cost-effective method for sediment remediation in Er-Ren River. This study can also elevate the domestic technology level in sediment remediation, gain better understanding of the scale-up remediation, and protect the health of our ecosystems and our citizens.