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Related Experiment Videos

Fixed film phosphorus removal--flexible enough?

F Rogalla1, T L Johnson, J McQuarrie

  • 1Black & Veatch Corporation, 69 London Road, Redhill RH1 1LQ, UK. rogallaf@bv.com

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|August 8, 2006
PubMed
Summary

Biological phosphorus removal using attached growth systems offers compact solutions. Combining activated sludge with biofilm carriers shows promise for efficient nutrient removal in wastewater treatment.

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Area of Science:

  • Environmental Engineering
  • Wastewater Treatment Technologies

Background:

  • Biological phosphorus removal (BPR) traditionally used large activated sludge systems.
  • Attached growth enhanced biological phosphorus removal (EBPR) offers compact alternatives with high biomass retention.

Purpose of the Study:

  • To explore the potential of attached growth systems for enhanced biological phosphorus removal.
  • To investigate the combination of activated sludge and biofilm carriers for improved wastewater treatment.

Main Methods:

  • Research into applying alternate anaerobic/aerated conditions to fixed bacteria in biofilm reactors.
  • Development and evaluation of integrated fixed-film activated sludge (IFAS) systems.

Main Results:

  • Attached growth systems are more compact than traditional activated sludge processes.

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  • EBPR systems require backwashing for phosphorus extraction, posing control challenges.
  • Integrated fixed-film activated sludge systems demonstrate potential for compact tankage and low nutrient levels.

    • Conclusions:

    • Attached growth systems present an attractive, compact approach to EBPR.
    • Combining suspended and attached growth systems (IFAS) offers novel treatment opportunities.
    • Further exploitation of IFAS systems can lead to efficient, biologically-based wastewater treatment.