Change in metabolism of PHA accumulation by activated sludge modifying operating conditions

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7 Citations (Scopus)

Abstract

In the present work, sludge from a stable and efficient phosphorus removal process was used to evaluate the change in the metabolism when the reactor operation was modified from anaerobic/aerobic to aerobic dynamic substrate feeding. The change in operational conditions allowed the population to modify the metabolism of phosphorus and polyhydroxyalkanoates (PHA) accumulation. Under aerobic dynamic feeding, phosphorus accumulation was almost hindered while the amount of PHA accumulation increased significantly. After ten days of operation under dynamic substrate feeding, the reactor operation turned back to anaerobic/aerobic cycles and the metabolism of phosphorus was progressively recovered.

Original languageEnglish
Pages (from-to)353-356
Number of pages4
JournalWater Science and Technology
Volume46
Issue number1-2
Publication statusPublished - 12 Sep 2002
Event3rd IWA International Specialised Conference on Microorganisms in Activated Sludge and Biofilm Processes - Rome, Italy
Duration: 13 Jun 200115 Jun 2001

Keywords

  • Activated sludge
  • Aerobic dynamic substrate feeding
  • EBPR
  • Polyhydroxyalkanoates
  • Polyphosphate

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