English  |  正體中文  |  简体中文  |  Items with full text/Total items : 52047/87178 (60%)
Visitors : 8679964      Online Users : 83
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35941

    Title: 都市垃圾焚化底渣水萃細泥再生耐火石膏板之研究
    Other Titles: A study on the fire-resistant gypsum plaster from water-extracted fine particle of MSWI bottom ash
    Authors: 蘇文亮;Su, Wen-liang
    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;石膏板;再利用;耐火材料;水洗;bottom ash;gypsum plaster;reuse;fire-resistant material;water extraction
    Date: 2009
    Issue Date: 2010-01-11 07:22:32 (UTC+8)
    Abstract: 目前台灣地區的都市垃圾處理已經趨向於利用焚化處理的方式進行減量。而其焚化過後所產生的底渣,常利用於道路基層以及瀝青混凝土等再利用之用途。而文獻中底渣經過水萃,並經由NO.200篩篩分後的篩下細泥(即為細底渣),目前並無再利用的價值且毒性甚低。而在初步試驗發現細底渣中Ca的含量約30%,因此嘗試利用水萃細泥製作耐火石膏板,以提升底渣的再利用價值。
    Municipal solid waste treated by incineration had being a tendency in many countries. The bottom ash after treated by water extraction and screened was often reused in the substitution material of asphalt concrete and road construction. However, the fine-particle below the sieve No.200 doesn’t have the value of reuse and its toxicity is low. From the preliminary experiment, it was found that 30% of Ca contained in the fine-particle bottom ash. The aim of this study was trying to transfer the fine-particle bottom ash into the feedstock of gypsum plaster.
    The study were investigated the component of the fine-particle bottom ash, added H2SO4 to react with Ca into CaSO4‧2H2O, and then transfer into CaSO4‧0.5H2O in the oven. The particle size analyzer, X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) analysis were applied to exam the inner change before and after the transformation. The transformed fine-particle bottom ash was blended with pure semi-hydrate gypsum, the product was analyzed by the bending test, incombustibility test and toxicity characteristic leaching process (TCLP), in order to satisfy the relative standards.
    The results showed that, the efficiency of transformation was 25.31%, crystal of gypsum was found by SEM. From the analysis of XRD spectrum, it was found CaSO4‧2H2O can be converted into semi-hydrate gypsum in 135℃ for 4 hr. The plaster which added 40% fine-particle bottom ash (after transformed), 8% fiber and 75% water can achieve the good working ability and bending strength. In addition, the strength of bending was better than the market gypsum plaster. And the curve of incombustibility test was satisfied the standard of CNS6532.
    Appears in Collections:[水資源及環境工程學系暨研究所] 學位論文

    Files in This Item:

    File SizeFormat

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback