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標題: | 以水槽試驗模擬樹脂包監測重金屬之功效 A Flume Experiment on the Effect of Monitoring of Heavy Metals by Resin Packs |
作者: | Sheng-Kai Huang 黃聖凱 |
指導教授: | 張尊國(Tsun-Kuo Chang) |
關鍵字: | 水槽試驗,離子交換樹脂,重金屬監測, flume experiment,ion-exchange resin,heavy metal monitoring, |
出版年 : | 2018 |
學位: | 碩士 |
摘要: | 農地受重金屬污染主要來自於引灌遭受污染之水質所致,而污染源許多來自於難掌握的偷排行為。傳統採樣監測的代表性不足,連續監測的成本又過於昂貴,要釐清污染來源非常不易,為了克服上述困難,解決對策必須有成本低的監測工具以及快速的檢測方法。本研究主要核心為利用樹脂包做為追蹤重金屬污染源的監測工具,以及搭配手持式X-射線螢光光譜儀(XRF)做為快速檢測樹脂重金屬含量之方法,以提升監測之便利及效益。
本研究目的在於了解樹脂包在不同條件的水流動態下,樹脂包的吸附機制,這對於現地的應用上相當重要,因現地使用時會有許多不確定的因素,如水質背景、流速、水位的變化,以及水中懸浮固體物、生物等,進而造成數據解讀上的困擾。本研究分為水槽試驗與現地試驗兩個部分,由實驗室的水槽模擬延伸應用到實際現地情況。水槽試驗結果顯示水體中高濃度元素並不會去影響其他低濃度元素交換的現象,在樹脂未達飽和吸附量前,元素之間不會彼此產生競合吸附;透過樹脂水流通量推算水槽水體中重金屬濃度,其結果與實際水體濃度符合,表示在不同的操作條件下均能有效監測重金屬。現地試驗部分,選擇桃園三塊厝支線新庄3號橋附近下游為現地試驗渠段,三個監測點位,連續監測三天。試驗結果表明透過樹脂水流通量推算現地水體中銅濃度,其結果與監測資料相差4~5倍,可知環境中重金屬存在的型式對於樹脂吸附重金屬有顯著的影響;配合量測現地流速、水位以及採取水樣,並了解灌區的背景資料,整合以上資訊能精確的判讀及解釋其所收集到的數據。 研究結果提供樹脂包於環境重金屬監測上重要的解析基礎,對於水中重金屬監測方法應用之推廣提供良好的支撐。 The contaminated farmlands are mainly affected by the polluted water via irrigation channels; however, due to the insufficient representativeness of traditional sampling and monitoring and the high cost of continuous monitoring, it’s diffifult to clarify the responsibility for the pollution. In order to improve the problems, the resin packs were used in this study as a monitoring tool to track pollution sources, and the handheld X-ray fluorescence spectrometer (XRF) was adopted as a method to efficiently test the heavy metal content. This study aimed to investigate the adsorption mechanism of the resin packs under various water flow conditions. A flume experiment and a field experiment were researched and analyzed. The result of the flume experiment indicated that the different elemental concentration in water didn’t compete or cooperate with each other. Moreover, the heavy metal concentration in water could be accurately calculated by the water flow of the resin packs, showing that heavy metals in water could be monitored under diffirent operating conditions. On the other hand, we chose Taoyuan as a study area. There were 3 point sites in channel and each site was placed resin packs for monitoring time for 3 days. The result of the field experiment indicated that the copper concentration in water calculated by the water flow of the resin packs was four times lower than that shown in the monitoring data, revealing that the existing forms of heavy metals significantly influenced resin packs to absorb heavy metals or not. In field settings, the data would be exactly collected and interpreted with the information such as surface velocity measurements, water levels, water samples, and the background knowledge of the irrigation area. It is hoped that the findings of this study could provide practical implications in the field of environmental engineering and management. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/69396 |
DOI: | 10.6342/NTU201801329 |
全文授權: | 有償授權 |
顯示於系所單位: | 生物環境系統工程學系 |
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