About The Journal
  Aims and Scope
  Editorial Board
  Submit a Manuscript 
  Subscription Information
  Guidelines for Publication
  Ethics
Articles & Issues
  Search
  Issue
  Online First
  KJChE on
For Authors
  Instructions to Authors
  Ethical Responsibilities of
  Authors in KJChE
  Ethics in Publishing
  Peer Review Process
  Author's Checklist
  Copyright Transfer Form
Contact us
 
 
 
Issue
Korean Journal of Chemical Engineering,
Vol.28, No.1, 164-169, 2011
Minimization of excess sludge and cryptic growth of microorganisms by alkaline treatment of activated sludge
Na SH, Shon HK, Kim JH
Sludge solubilization was induced by the alkaline-thermal treatment to investigate the cryptic growth and reduction of a large amount of activated sludge produced from wastewater treatment. Activated sludge was divided into lysate, supernatant fraction and particulate fraction for a biodegradability test by cryptic growth. Sludge was reduced up to 78% at pH 13 and 44% at pH 10 using the single alkaline-thermal treatment. Also, it was found that alkalinethermal treatment at pH 13 increased the quantity of intracellular components generated by cell lysis and promoted the power of significant cell destruction. The neutralization of pH after the solubilized activated sludge led to high biodegradability of organic carbon sources generated by cell lysis. This can be utilized in minimizing activated sludge.
Keywords: Activated Sludge; Alkaline-thermal Treatment; Sludge Reduction; Cell Lysis; Cryptic Growth
[References]
  1. Lee NM, Welander T, Water Res., 30, 1781, 1996
  2. Rensink JH, Rulkens WH, Water Sci. Technol., 36, 171, 1997
  3. Rocher M, Goma G, Begue AP, Louvel L, Rols JL, Appl. Microbiol. Biotechnol., 51(6), 883, 1999
  4. Ryan FJ, J. Gen. Microbiol., 21, 530, 1959
  5. Mason CA, Hamers G, Bryers JD, Fems Microbiol. Rev., 39, 373, 1986
  6. Yasui H, Shibata M, Water Sci. Technol., 30, 11, 1994
  7. Kamiya T, Hirotsuji J, Water Sci. Technol., 38, 145, 1998
  8. Rocher M, Roux G, Goma G, Pilas-Begue A, Louvel L, Rols JL, Water Sci. Technol., 44, 437, 2001
  9. Saby S, Djafer M, Chen GH, Water Res., 36, 656, 2002
  10. Tanaka S, Kobayashi T, Kamiyama KI, Lolita M, Bildan S, Water Sci. Techol., 35, 209, 1997
  11. Canales A, Areilleux A, Rols JL, Goma G, Huyard A, Water Sci. Technol., 30, 97, 1994
  12. APHA, AWWA, WEF, Standard methods for the examination of water and wastewater, 19th Ed. American Public Health Association, Baltimore, MD, 1995
  13. Reasoner DJ, Geldreich EE, Appl. Environ. Microbiol., 49, 1, 1985
  14. Morono Y, Takano S, Miyanaga K, Tanji Y, Unno H, Hori K, Biotechnol. Lett., 26(5), 379, 2004
  15. Na SH, Miyanaga K, Unno H, Tanji Y, Appl. Microbiol. Biotechnol., 72(2), 386, 2006
  16. Salvado H, Gracia MP, Amigo JM, Water Res., 29, 1041, 1995
  17. Muller JA, Water Sci. Technol., 44, 121, 2001
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.