Electroosmotic Flows in Sludge at Dewatering

Electroosmotic dewatering of activated sludge is an important transport process playing a critical role in electroosmotic dewatering of sludge. In the present work, a comprehensive physical model considering both pressure-driven and electroosmosis-driven flows in an activated sludge floc was developed and numerically solved. Meshes were produced via scanning images based on real sludge flocs. The permeabilities of pressure and electroosmotic flows were evaluated, from which the total detwatering flow rate can be estimated.

[1]  Xiaofeng Peng,et al.  Electroosmotic flow in sludge flocs , 2009 .

[2]  A. Mujumdar,et al.  Probing Heterogeneous Structure of Aggregates , 2008 .

[3]  E. Iritani,et al.  Analysis of Gravity Filtration Behaviors of Waterworks Sludge Based upon Sedimentation Tests , 2008 .

[4]  Heat and Mass Transfer in Unsaturated Porous Cake with Heated Walls , 2008 .

[5]  A. Mujumdar,et al.  Floc Strength Evaluation at Alternative Shearing with Presence of Natural Organic Matters , 2008 .

[6]  S. Küçükbayrak,et al.  Comparison of the properties of glass, glass-ceramic and ceramic materials produced from coal fly ash. , 2008, Journal of hazardous materials.

[7]  Juan Li,et al.  Utilization of coal fly ash in the glass-ceramic production. , 2007, Journal of hazardous materials.

[8]  Zhao Youcai,et al.  Study on use of MSWI fly ash in ceramic tile. , 2007, Journal of hazardous materials.

[9]  Duu-Jong Lee,et al.  Intra-layer flow in fouling layer on membranes , 2007 .

[10]  C. Bergmann,et al.  Fly ash of mineral coal as ceramic tiles raw material. , 2007, Waste management.

[11]  Kae‐Long Lin,et al.  Feasibility study of using brick made from municipal solid waste incinerator fly ash slag. , 2006, Journal of hazardous materials.

[12]  Arun S. Mujumdar,et al.  Moisture Distribution and Dewatering Efficiency for Wet Materials , 2006 .

[13]  Duu-Jong Lee,et al.  Multiscale structures of biological flocs , 2004 .

[14]  W. Stahl,et al.  Improvement of filtration kinetics by pressure electrofiltration , 2002 .

[15]  F. Ding,et al.  WATER REMOVAL FROM SLUDGE IN A HORIZONTAL ELECTRIC FIELD , 2001 .

[16]  J. Santiago,et al.  Electrokinetic instability micromixing. , 2001, Analytical chemistry.

[17]  Luisa Barbieri,et al.  Bulk and sintered glass-ceramics by recycling municipal incinerator bottom ash , 2000 .

[18]  Duu-Jong Lee,et al.  Moisture Distribution in Sludge: Effects of Polymer Conditioning , 1999 .

[19]  W. A. Barton,et al.  THE ELECTRODEWATERING OF SEWAGE SLUDGES , 1999 .

[20]  H. Yoshida,et al.  ELECTROOSMOT1C DEWATERING UNDER A. C. ELECTRIC FIELD WITH PERIODIC REVERSALS OF ELECTRODE POLARITY , 1999 .

[21]  Duu-Jong Lee,et al.  Continuous Classification of Moisture Content in Waste Activated Sludges , 1997 .

[22]  D. J. Lee,et al.  Capillary suction time (CST) as a measure of sludge dewaterability , 1996 .

[23]  Shing-Der Chen,et al.  Treatment of high-strength nitrate wastewater by biological methods - operational characteristics study , 1996 .

[24]  Achmad Kafaar,et al.  Electroosmotically enhanced sludge dewatering-pilot-plant study , 1994 .

[25]  Søren Laursen,et al.  Electroosmosis in filter cakes of activated sludge , 1993 .

[26]  H. Yoshida.  PRACTICAL ASPECTS OF DEWATERING ENHANCED BY ELECTRO-OSMOSIS , 1993 .

[27]  M. Hiraoka,et al.  Commercialization of Pressurized Electroosmotic Dehydrator (PED) , 1990 .