Respirometric assessment of storage yield for different substrates


Karahan-Gul Ö. , Artan N. , Orhon D., Henze M., van Loosdrecht M.

WATER SCIENCE AND TECHNOLOGY, vol.46, pp.345-352, 2002 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 46
  • Publication Date: 2002
  • Title of Journal : WATER SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.345-352
  • Keywords: acetate, Activated Sludge Model No.3, domestic sewage, glucose, oxygen utilisation rate, respirometry, storage yield, ACTIVATED-SLUDGE, INTRACELLULAR STORAGE, METABOLISM, CULTURES

Abstract

A new procedure has been defined for the respirometric assessment of bacterial storage yield as defined in the Activated Sludge Model No.3. The procedure was used to determine the storage yield, Y-STO, associated with acetate, glucose and domestic sewage, together with mixtures of acetate/glucose and acetate/domestic sewage at different initial F/M ratios. Y-STO was calculated as 0.78 gCOD(gCOD)(-1) for acetate, 0.87 gCOD(gCOD)(-1) for glucose and 0.96 gCOD(gCOD)(-1) for domestic sewage. The Y-STO of substrate mixtures was found to reflect the characteristics of the dominant fraction in the mixture.