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    Title: 細粒徑都市垃圾焚化底渣以鳌合劑穩定搭配燒結資源化之研究
    Other Titles: Regeneration of fine-particle MSWI bottom ash by chelating agents stabilization accompany with sintering process
    Authors: 胡貴寶;Hu, Kuei-pao
    Contributors: 淡江大學水資源及環境工程學系碩士班
    高思懷;Gau, Sue-huai
    Keywords: 焚化底渣;螯合劑;穩定化;序列萃取;燒結;淨水污泥;bottom ash;chelating agents;stabilization;sequential extraction;Sintering;water treatment sludge
    Date: 2005
    Issue Date: 2010-01-11 07:32:20 (UTC+8)
    Abstract: 目前台灣地區的都市垃圾主要採取焚化處理為主,相對的也產生大量的焚化灰渣問題,在歐洲一些先進的國家,已經把焚化底渣視為一種可資源化的產品。本研究主要探討資源化的前處理程序,以增加底渣之再利用價值。
    研究主要分為三大部分:PART A為水洗程序,主要為洗出底渣中可溶性鹽類,其中氯鹽對於底渣資源材料化是一個不利的因子;PART B為穩定化部份,以螯合劑與底渣中重金屬形成錯合反應,而降低重金屬的溶出潛勢,並探討其中穩定前後重金屬鍵結型態的變化。PART C為燒結資源化部份,將穩定後之底渣以燒結熱處理,以增加細粒徑底渣再利用的價值。
    由實驗結果得知,底渣經過兩次液固比2水洗後,可降低底渣中大量的氯鹽含量。而硫系螯合劑對於Cu、Cd、Zn有較好的穩定效果,皆能使不易移動的重金屬型態增加。在燒結熱處理方面,底渣拌合40%之淨水污泥,且溫度控制在1150℃時,所燒結體的抗壓強度都可達到中強度骨材分類標準的75kgf/cm2,而在經過硫系3%穩定之底渣,其強度甚至可高達200 kgf/cm2,已具資源化之可行性。
    At present, incineration is the main treatment way of the municipal solid waste in Taiwan. It produce large amount of ash and residuals. Some developed countries in Europe regenerate the bottom ash as construction aggregates. This study aim to increase the bottom ash value and environmental safety in the regeneration processes.

    This study include three part:Part A is washing procedure to wash out the chloride in bottom ash. Because chloride is harmful to the regeneration material of bottom ash; Part B is the stabilization. Using commercial chelating agents to stabilize the heavy metals in the bottom ash. In order to reduce the leaching potential of heavy metals. Part C is the sintering procedure, to increase the of fine-particle bottom ash value in the regeneration processes.

    The result showed that, after water wash (L/S=2) twice can reduce the chloride concentration effectively. And sulfur chelating agents had better stabilization effect for Cu、Cd and Pb that because of the increase of heavy metal bond to hard moving. Taking bottom ash that after stabilization mixed with 40% water purification sludge during the sintering treatment. When sintering at 1150℃,the compressive strength would great than middle strength aggregate classification standard (75kgf/cm2).The compressive strength would reach 200.5 kgf/cm2 which bottom ash after 3% sulfur chelating agents stabilization. The sintering ash could achieve requirement for aggregate of construction standards.
    Appears in Collections:[水資源及環境工程學系暨研究所] 學位論文

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