English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 18034/20233 (89%)
造訪人次 : 23345257      線上人數 : 507
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU 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: https://ir.cnu.edu.tw/handle/310902800/23272


    標題: Innuence of Electrolyte Concentration and Polymer Doses on Granular Bed Filtration
    電解質濃度和高分子劑量對粒狀床過濾之影響
    作者: Jing Song Chang
    Vigneswaran, S
    貢獻者: 環境工程衛生科
    關鍵字: electrolyte
    zeta potential
    attachment
    電解質
    界達電位
    附著
    日期: 1992
    上傳時間: 2010-11-29 10:38:42 (UTC+8)
    摘要: Chemical interacdons among the suspended particles and hIter media grains play an important role in hltradon procw in deciding the filter efficiency. Successful attachment and removal are prompted by interparticle forces caused by electrostatic forces among them. These forces depend oo the zeta potential (ZP) of the particles and mter medium. A lab-scale study canied out to study dle effect of electrolyte concentration on performance of a granular bed filter indicated that the filter efficiency was minimum at low electrolyte concentration values where ZP of particles in suspension was negative. Increase of electrolyte concentration yielded increase in hlter eMciency. The variation of filter efTiciency at initial stage and during the filter run at different electrolyte concenlrations was related to particle-filter grain andparticle-particle attachment coefhcients (α and αP respecdvely). The experimental study conducted to relate the polymer dose and the filter eMciency indicated that there is a clear optimum of polymer dose with respect to filter efficiency. Maximum α, αP and almost zero ZP were obtained at this polymer dose.
    過濾池效率取決於懸浮顆粒和濾料間化學交互作用,顆粒成功的附著與去除有賴顆粒間靜電力,而道些力量決定於顆粒和濾料的界達電位。由實驗得知在低電解貿濃度時過濾效率低,這時界達電位為負,當電解質濃度增加可提高過濾效率。本研究將針對不同電解質濃度下之清潔濾床和過濾中的濾池效率與顆粒—顆粒間和顆粒—濾料間的附著關係加以研究,並將數學模式係數(α 和αP)予以量化。另由高分子劑量與濾池效率關係可求得最佳劑量,這時α 和αP最大而且界達電位趨近於零,於化學考量,此種量化對過濾之研究很有助益。
    關聯: 嘉南學報 18期 : p.1-12
    顯示於類別:[嘉南學報] 18期 (1992)
    [環境工程與科學系(所)] 期刊論文

    文件中的檔案:

    沒有與此文件相關的檔案.



    在CNU IR中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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