Biological Phosphorus Release and Uptake Under Alternating Anaerobic and Anoxic Conditions In a Fixed-Film Reactor

Jens Peter Kerrn-Jespersen, Mogens Henze, Rune Strube

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Biological phosphorus removal was investigated in a fixed-film reactor with alternating anaerobic and anoxic conditions. The tests showed that biological phosphorus removal can be obtained in a fixed-film reactor with nitrate as oxidising agent. In the anaerobic period, 0.52 mg of PO4-P was released per mg of acetate taken up on an average. In the anoxic period, 2.0 mg of PO4-P was taken up per mg of NO3-N reduced on an average. The relationship between potassium released and phosphate released in the anaerobic phase was determined to be 0.37 mg K/mg P, while the relationship between potassium taken up and phosphate taken up in the anoxic phase was determined to be 0.36 mg K/mg P. The phosphorus concentration in the sludge was determined at 8–10% of dry solids.
Original languageEnglish
JournalWater Research
Volume28
Issue number5
Pages (from-to)1253-1255
ISSN0043-1354
Publication statusPublished - 1994

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