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Environmental evaluation of alternatives for the treatment of WWTP sludge

  • 2021

PROJECT SCOPE & CENER ROLE

  • To evaluate the environmental impact of the different management options for the treatment of sludge generated in different WWTPs (Wastewater Treatment Plant) of a region, comparing also different management technologies, in order to identify which is the most environmentally sustainable option.
  • The environmental assessment of the different scenarios is based on two main aspects:
    • Calculation of greenhouse gas (GHG) emissions associated with each of the scenarios
    • Calculation of fossil energy consumption associated with each of the scenarios
  • The different technological alternatives evaluated have been:
    • Composting
    • Thermophilic Autosustainaed Aerobic Digestion (ATAD)
    • Mesophilic and thermophilic anaerobic digestions (DAM and DAT)
    • Different uses of biogas (CHP application on site, replacement of natural gas, use as fuel for transport

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