Polymer Gels pp 183-192 | Cite as

Gel Dewatering Process for Biological Slurry

  • Hajime Unno
  • Xia Huang
  • Takashi Akehata
  • Okihiko Hirasa


Biological slurries, such as excess activated sludge from wastewater treatment plants, organic waste slurry from alcohol production process, etc., generally contain tremendous amount of water. Most of these slurries have to be concentrated/dewatered before further processing so as to make the relevant process economically feasible. However, they are composed of highly hydrophilic organic solids and difficult to be dewatered. Filtration is one of the conventional dewatering methods, but it carries some drawbacks for the efficient treatment of large amount of highly hydrophilic slurry. This article is proposing a novel process which utilizes temperature-sensitive hydrogel as filtration media.


Activate Sludge Heat Transfer Rate Solid Concentration Filter Cake Sludge Dewatering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • Hajime Unno
    • 1
  • Xia Huang
    • 2
  • Takashi Akehata
    • 3
  • Okihiko Hirasa
    • 4
  1. 1.Dept. of BioengineeringTokyo Institute of TechnologyTokyoJapan
  2. 2.Dept. of Environmental EngineeringTsinghua UniversityBeijinChina
  3. 3.Dept. of Environmental Chemistry and EngineeringTokyo Institute of TechnologyYokohamaJapan
  4. 4.Research Institute for Polymers and TextilesTsukubaJapan

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