Effect of cyclic oxygen exposure on the activity of denitrifying phosphorus removing bacteria

T. Kuba, M. C.M. Van Loosdrecht, J. J. Heijnen

Research output: Contribution to journalConference articlepeer-review

61 Citations (Scopus)

Abstract

The effect of oxygen on the activity of denitrifying phosphorus removing bacteria has been studied. Denitrifying phosphorus removing bacteria were enriched without oxygen in an anaerobic-anoxic SBR (sequencing batch reactor) over a long time, after which an aerobic phase was introduced into the SBR. The performance on phosphorus and nitrogen removal was examined for an anaerobic-aerobic-anoxic SBR. It could be concluded that oxygen has no detrimental effect on the denitrifying dephosphatation activity. The maximum phosphorus uptake rate by the enriched denitrifying sludge was almost equal for anoxic and aerobic conditions, and the anoxic phosphorus removal activity was kept within at least 5 months after the introduction of the aerobic phase. From the experiments it followed that the advantage of applying denitrifying phosphorus removing bacteria can only be obtained in a pre-denitrification process like the UCT-type of process.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalWater Science and Technology
Volume34
Issue number1-2 -2 pt 1
DOIs
Publication statusPublished - 1996
Externally publishedYes
EventProceedings of the 1996 18th Biennial Conference of the International Association on Water Quality. Part 1 - Singapore, Singapore
Duration: Jun 23 1996Jun 28 1996

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology

Fingerprint Dive into the research topics of 'Effect of cyclic oxygen exposure on the activity of denitrifying phosphorus removing bacteria'. Together they form a unique fingerprint.

Cite this