以翻轉稀釋法整治鋼鐵廠受重金屬污染之土壤

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Dissertations and Theses > Item 310902800/34008

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Title:	以翻轉稀釋法整治鋼鐵廠受重金屬污染之土壤 Remediation of Heavy Metal Polluted Soil in Steel Manufacturing Plants by Soil Blending and Dilution Method 一直以來鋼鐵工業被稱為「重工之母」視為一個國家的強弱象徵，無論是先進國家或是開發中的國家，無不積極振興此項工業，在鋼鐵業的快速發展之下，讓台灣的經濟與建設蓬勃發展，在這快速的成長下，鋼鐵廠所帶來的潛在環境污染是一個問題，這些污染包含了空氣污染、土壤污染、地下水污染等等。本研究旨在蒐集高雄CY鋼鐵廠土壤重金屬污染整治成功案例資料來研究與探討實務上的整治與運用，透過土壤重金屬之污染調查與分析結果，將污染區塊區分為A、B、C、D、E、F六個區塊，這六個區塊整治前的重金屬濃度平均為；砷(As) 11~14 mg/kg、鉻(Cr) 94~692 mg/kg、銅(Cu) 89~532 mg/kg、鎘(Cd) ND 汞(Hg) ND、鎳(Ni) 48~245 mg/kg 鉛(Pb) 32~347 mg/kg、鋅(Zn) 253~1900 mg/kg，平均污染深度範圍為0~200cm屬於淺層污染，無地下水污染問題，經現場XRF分析數據顯示及實驗室分析數據進行比對發現該場址為銅、鉻、鎳、鋅重金屬污染，污染濃度介於監測標準及管制標準之間，該場址的污染範圍小污染深度淺，評估廠址地形、環境、時間上等因素，評估分析使用「翻轉稀釋工法」來快速整治各個污染區塊。本研究使用翻轉稀釋工法整治後各區塊平均重金屬污染濃度範圍；(As) 10~14 mg/kg、鉻(Cr) 92~140 mg/kg、銅(Cu) 89~186 mg/kg、鎘(Cd):ND、汞(Hg) ND、鎳(Ni) 51~87mg/kg 鉛(Pb) 16~116 mg/kg、鋅(Zn) 179~329 mg/kg。經實驗室數據分析表示，使用「翻轉稀釋工法」能有效的降低土壤中重金屬的含量，快速將污染物的濃度降到土壤管制標準以下。國內受重金屬污染之土壤大都採取翻轉稀釋工法及離場處理，針對污染濃度(約1~3倍重金屬管制標準)使用翻轉稀釋工法處理，是一個快速且低成本的工法；中、高污染濃度之土壤採離場處理，相較之下翻轉稀釋工法比排土客土法相差約53%的費用。本研究依據案例場址實際操作情形編寫作業程序，運用一個完整的翻轉稀釋施工程序實例運用，從環境污染調查規劃分析檢測到地坪開挖規劃、地坪破除、翻轉深度的計算、檢測方式、地坪復原及整治經費參考等相關資料可提供相關污染場址整治工程做為參考。 The steel industry has always been called the ";mother of heavy industry";as a symbol of the strength of a country. Whether it is an advanced country or a developing country, all countries actively revitalize this industry. With the rapid development of the steel industry, the economy and construction of Taiwan are booming. With this rapid growth, potential environmental pollu-tion caused by steel plants is a problem, including air pollution, soil pollution, groundwater pollution, and so on.The purpose of this study is to collect information on successful cases of soil heavy metal pollution remediation in Kaohsiung CY Steel Plant to study and discuss practical remediation and application. Through the results of soil heavy metal pollution investigation, the polluted areas are divided into six areas: A, B, C, D, E, and F. The concentration of heavy metals in these six areas before remediation is 11-14 mg/kg for arsenic (As), 94~692 mg/kg for chromium (Cr), 89~532 mg/kg for copper (Cu), nondetected for cadmium (Cd) and mercury (Hg), 48~245 mg/kg for nickel (Ni), 32~347 mg/kg for lead (Pb), 253~1900 mg/kg for Zinc (Zn). The average pollution depth range is 0~200cm, which belongs to shallow pollution and there is no groundwater pollution problem. After realizing the XRF analysis data and laboratory analysis data for comparison, it was found that the site was pol-luted mainly by heavy metals such as copper, chromium, nickel, and zinc. The pollution concentration is between monitoring standards and control standards, and the pollution area of the site is small and the pollution depth is shallow. By considering the topography, environment, time and other factors of the site, the ";soil blending and dilution method";was selected as a most feasible and cost-effective method to quickly remediate each polluted area.In this study, the range of average heavy metal pollution concentration of each block after remediation using the soil blending and dilution method are as follows: 10-14 mg/kg for arsenic (As), 92-140 mg/kg for chromium (Cr), 89-186 mg/kg for copper (Cu), non-detected for cadmium (Cd) and mercury (Hg), 51~87mg/kg for Nickel (Ni), 16~116 mg/kg for lead (Pb), and179~329 mg/kg for Zinc (Zn). According to laboratory data analysis, the use of the ";soil blending and dilution method";can effectively reduce the content of heavy metals in the soil and quickly reduce the concentration of pollutants below the soil control standards.Most soils contaminated by heavy metals adopt the soil blending and dilution method and off-site technology for remediation. The reverse mixing and dilution method is particularly used when the pollution concentration is about 1 to 3 times the heavy metal control standard, which is a fast and low-cost method. For medium and high pollution concentration, the more expensive off-site technology of soil is more feasible. In comparison, the soil blending and dilution method is about 53% less expensive than the replacing soil method.This study compiles operating procedures based on the actual operating conditions of the case site, and uses a complete example of soil blending and dilution method construction procedures, from environmental pollution in-vestigation, planning, analysis and detection to floor excavation planning, floor removal, calculation of flipping depth, detection methods. Material such as floor restoration and renovation funding cost can provide similar contaminated site relevant remediation technology and can be used as a ref-erence.
Authors:	楊允誠
Contributors:	環境工程與科學系林瑩?
Keywords:	土壤整治重金屬污染鋼鐵廠翻轉稀釋法 Soil remediation Heavy metal pollution Steel Manufacturing plants Soil blending and dilution method
Date:	2020
Issue Date:	2022-10-21 10:35:02 (UTC+8)
Relation:	學年度：108， 119頁
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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