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Performance results from the Tucumán solid waste bioreactor.

E A McBean1, S Syed-Ritchie, F A Rovers

  • 1CRA Engineering Inc., Waterloo, Ont., Canada. emcbean@uoguelph.ca

Waste Management (New York, N.Y.)
|March 14, 2007
PubMed
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This study shows that a large anaerobic bioreactor at the Pacara Pintada Landfill accelerated biogas generation and collection. The bioreactor also demonstrated significant metal attenuation in leachate and controlled refuse subsidence.

Area of Science:

  • Environmental Engineering
  • Waste Management
  • Bioreactor Technology

Background:

  • Large-scale anaerobic bioreactors are crucial for sustainable waste management.
  • Optimizing bioreactor performance enhances biogas production and leachate treatment.
  • Understanding refuse subsidence is key to landfill stability.

Purpose of the Study:

  • To evaluate the performance of a 6200-ton demonstration-scale anaerobic bioreactor.
  • To assess biogas generation, leachate metal concentrations, and refuse subsidence over 30 months.
  • To demonstrate the bioreactor's operational stability in the mesophilic range.

Main Methods:

  • Operating a demonstration-scale anaerobic bioreactor (6200 tons).
  • Monitoring operational parameters for 30 months, including temperature maintenance.

Related Experiment Videos

  • Measuring biogas generation rates, leachate metal concentrations, and refuse subsidence.

    • Main Results:

    • Bioreactor maintained mesophilic conditions, achieving accelerated biogas generation (rate constant ~0.5 year(-1)).
    • Significant attenuation of metal concentrations in leachate observed over time.
    • Refuse subsidence averaged 11% over 28 months, ranging from 4% to 19%.

    Conclusions:

    • The Tucumán bioreactor successfully demonstrated efficient biogas production and collection.
    • The bioreactor technology proves effective for leachate treatment and landfill stabilization.
    • Mesophilic operation is viable for accelerated waste decomposition and resource recovery.