Pilot-scale anaerobic digestion of screenings from wastewater treatment plants

Bioresource Technology
R Le HyaricR Gourdon

Abstract

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.

References

Jun 19, 2008·Waste Management·A DavidssonH Aspegren
Jul 28, 2009·Water Science and Technology : a Journal of the International Association on Water Pollution Research·R Le HyaricR Gourdon

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Citations

May 28, 2014·Water Research·Luz Stella Cadavid-Rodríguez, Nigel J Horan
Feb 5, 2013·Waste Management·H GregorM Kuhn
Jul 6, 2021·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Maria Rosaria BoniSimone Leoni

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