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Modelling to solve odour problems.

P S Childs1, A J Dunn

  • 1Project Delivery, Southern Water, Manor Royal, Crawley, West Sussex.

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|September 8, 2001
PubMed
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Dispersion modelling and advanced treatment technologies successfully resolved persistent odour issues at East Worthing Wastewater Treatment Works. This case study demonstrates effective odour control, improving local air quality and eliminating public complaints.

Area of Science:

  • Environmental Engineering
  • Air Quality Management
  • Wastewater Treatment

Background:

  • Odour complaints significantly impact public perception of wastewater treatment works.
  • Long-standing odour issues at East Worthing WTW required a comprehensive solution.
  • Proximity of odour sources to residential areas exacerbated the problem.

Purpose of the Study:

  • To detail a case study on resolving odour problems at a wastewater treatment facility.
  • To demonstrate the effectiveness of dispersion modelling and treatment technologies in odour control.
  • To ensure compliance with stringent odour concentration limits at receptor locations.

Main Methods:

  • Conducted odour surveys to identify major emission sources (sludge press house, primary settlement tanks).

Related Experiment Videos

  • Implemented source containment, ventilation, and treatment using an ODORGARD unit.
  • Utilized dispersion modelling to determine permissible emission concentrations.
  • Performed an optimisation program for the odour control unit and conducted olfactometry analysis.

    • Main Results:

    • Dispersion modelling indicated a maximum permissible outlet concentration of 675 ouEm3.
    • Olfactometry analysis confirmed discharge levels below the required 670 ouEm3 after optimisation.
    • Eliminated all registered odour complaints post-scheme completion.

    Conclusions:

    • Dispersion modelling is crucial for establishing effective odour treatment levels.
    • Integrated odour control strategies, including containment and advanced treatment, are highly effective.
    • Successful odour management significantly improves local air quality and community relations.