English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49523/84737 (58%)
造訪人次 : 7605951      線上人數 : 55
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/107918

    題名: Ultrahigh-pressure expression of activated sludge assisted with self-flocculation caused by ultrasonication
    作者: Iritani, Eiji;Katagiri, Nobuyuki;Yamada, Masahiro;Hwang, Kuo-Jen;Cheng, Tung-Wen
    關鍵詞: Expression;Ultrahigh pressure;Activated sludge;Moisture content;Cell disruption;Self-flocculation
    日期: 2016-08-01
    上傳時間: 2016-10-18 02:10:34 (UTC+8)
    出版者: Elsevier Ltd
    摘要: The flocculant-free mechanical deliquoring method has been proposed for obtaining the compressed cake with an extremely low moisture content in expression of municipal excess activated sludge. The method is comprised of the mild ultrasonic pretreatment followed by ultrahigh-pressure expression. The floc breakage induced by ultrasonication greatly facilitated the removal of bound water during ultrahigh-pressure expression. Moreover, the cell disruption caused by ultrasonication induced self-flocculation of the sludge with the aid of the intracellular materials released from within the cells, preventing the souring of dewaterability. The moisture content of the compressed cake produced by expression of ultrasonicated sludge was dramatically reduced to as low as 38.0 wt% at the ultrahigh-pressure of 50 MPa, which exhibited the value much lower than that obtained for untreated sludge, due to the removal of bound water. Analysis of kinetics of ultrahigh-pressure expression for ultrasonicated and untreated sludge showed that the primary consolidation was followed by a three-stage creep phenomenon with different values of the creep constant. The primary consolidation based on the Terzaghi spring analogy accounted for the major portion of moisture removal in this method, and the effect increased with increasing pressure.
    關聯: Chemical Engineering Research and Design 112, p.16-23
    DOI: 10.1016/j.cherd.2016.06.008
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文


    檔案 大小格式瀏覽次數



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