教師資料查詢 | 類別: 期刊論文 | 教師: 黃國楨 Hwang, Kuo-Jen (瀏覽個人網頁)

標題:High-level deliquoring of activated sludge by ultrahigh-pressure expression combined with flocculation
學年102
學期2
出版(發表)日期2014/06/14
作品名稱High-level deliquoring of activated sludge by ultrahigh-pressure expression combined with flocculation
作品名稱(其他語言)
著者Iritani, E.; N. Katagiri; T. Washizu; Hwang, K.J.
單位淡江大學化學工程與材料工程學系
出版者Kidlington: Pergamon Press
著錄名稱、卷期、頁數Chemical Engineering Science 112, pp.1-9
摘要The efficient deliquoring process has been developed for achieving high-rate and high-degree deliquoring of municipal excess activated sludge, which exhibits relatively low dewaterability. In the method developed, low-pressure filtration combined with flocculation led to high-rate deliquoring of sludge due to the formation of large flocs. Subsequently, ultrahigh-pressure expression combined with water permeation through the filter cake which promoted the re-dispersion of flocs in the cake resulted in high-degree deliquoring of the cake. It should be noted that the moisture content in the compressed cake was finally reduced to 31 wt% by expression operation under action of an ultrahigh pressure of 15 MPa. This extremely low value of the cake moisture content implies that the liquid contained within the microorganism cells was partially removed by the mechanical pressure when the ultrahigh pressure is applied to the cake in the course of expression. The relation between the equilibrium porosity in the compressed cake and solid compressive pressure was empirically represented by a power function. The kinetics of ultrahigh-pressure expression such as the time variation of the moisture content in the compressed cake was accurately described by combining the multi-stage creep model with the modified Terzaghi model describing the primary consolidation.
關鍵字Expression; Ultrahigh pressure; Activated sludge; Moisture content; Deliquoring; Consolidation
語言英文(美國)
ISSN0009-2509
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者Iritani, E.
審稿制度
國別英國
公開徵稿
出版型式紙本
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!