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Related Experiment Videos

Controlling nitrogen removal using redox and ammonium sensors.

D Cecil1

  • 1Odense Water Ltd., Vandvaerksvej 7, 5000 Odense C, Denmark. dc@ov.dk

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|August 9, 2003
PubMed
Summary

Implementing an advanced aeration control system combining ammonium and redox potential significantly reduced total nitrogen in wastewater effluent. This system optimizes nitrogen removal processes at the Ejby Mølle Wastewater Treatment Plant.

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Area of Science:

  • Environmental Engineering
  • Wastewater Treatment Technology
  • Water Quality Management

Background:

  • Conventional wastewater treatment plants face challenges in effectively reducing nitrogen levels.
  • Optimizing aeration control is crucial for enhancing biological nutrient removal processes.

Purpose of the Study:

  • To evaluate a novel aeration control system integrating ammonium concentration and redox potential for nitrogen reduction.
  • To assess the impact of this control strategy on effluent total nitrogen levels at a full-scale wastewater treatment plant.

Main Methods:

  • Implementation of a combined ammonium and redox potential-based aeration control system at Ejby Mølle Wastewater Treatment Plant (WWTP).
  • Operation of parallel aeration tanks with alternating aeration and denitrification phases.

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  • Dynamic redirection of influent and effluent between tanks to optimize denitrification.

    • Main Results:

    • Average total nitrogen concentration in the effluent decreased from 4.7 to 2.1 mgN/L.
    • The advanced control system is believed to contribute at least 1 mgN/L to this reduction, with potential for greater impact.

    Conclusions:

    • The combined ammonium and redox potential aeration control system is effective in reducing effluent total nitrogen.
    • This strategy offers a promising approach for enhancing nitrogen removal efficiency in wastewater treatment.