Pilot-scale anaerobic digestion of screenings from wastewater treatment plants

Bioresour Technol. 2010 Dec;101(23):9006-11. doi: 10.1016/j.biortech.2010.06.150. Epub 2010 Jul 22.


The anaerobic digestion of screenings from a municipal wastewater treatment plant was studied in a 90 L pilot-scale digester operated at 35 degrees C under semi-continuous conditions. In the first 4 weeks, a dry solids residence time of 28 days was applied, but the installation of inhibitory conditions was observed. Feeding was therefore suspended for 4 weeks to allow the digester to recover from inhibition, and then progressively increased up to a constant load of 6 kg of raw waste per week, corresponding to an average residence time of about 35 days of dry solids. At this stage, biogas production stabilized between 513 and 618 Nl/kg VS(added) per week, with methane contents around 61% v/v. The results of this work thereby supported the feasibility of (co-)digestion as a potential alternative treatment of screenings from municipal wastewater treatment plants.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anaerobiosis
  • Biodegradation, Environmental
  • Biofuels / analysis
  • Fatty Acids, Volatile / analysis
  • France
  • Hydrogen-Ion Concentration
  • Organic Chemicals / chemistry
  • Pilot Projects
  • Sewage / microbiology
  • Waste Disposal, Fluid / instrumentation*
  • Waste Disposal, Fluid / methods*
  • Water Purification / instrumentation*
  • Water Purification / methods*


  • Biofuels
  • Fatty Acids, Volatile
  • Organic Chemicals
  • Sewage