Title:
Co-treatment of Wastewater from the Meat-producing Industry and Blood-waste in an Anaerobic Membrane Bioreactor (AnMBR)
Author(s):
Hummel, F., Gabauer, W., Fuchs, W.
Document(s):
Paper
Abstract:
This study aims at utilizing an anaerobic membrane bioreactor (AnMBR) for the combined treatment of wastewater from meat processing operations and slaughterhouse blood, with the goal of enhancing biogas production and mitigating the challenges associated with low energy density and high dilution in wastewater streams. A lab-scale AnMBR was constructed to investigate the efficacy of this approach, testing various feeding rates for wastewater, ranging from 6 kg/d to 17 kg/d, as well as exploring the co-digestion of the wastewater with blood at a constant feeding rate of 6 kg/d and varying blood-to-wastewater ratios. The results demonstrate that the co-digestion with blood yielded significantly higher methane production, (up to 0.034 Nm³/day), compared to the highest wastewater feeding rate. However, the specific yield per fed COD and oDM was lower in the co-digestion scenario. Interestingly, the oDM removal in the co-digestion process was much higher with 99.1 % on average. Further, the study addressed the challenges associated with blood digestion resulting in increased H2S levels in the raw biogas and elevated amounts of dissolved NH4-N in the permeate stream. These side products were subsequently valorised and treated through a combined process involving a biological desulfurization column and a hollow fibre membrane extractor.
Keywords:
anaerobic digestion, filtration, biofertilisers, hydrogen sulphide, ammonium, co-treatment
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Anaerobic digestion for biogas and biomethane production
Event:
32nd European Biomass Conference and Exhibition
Session:
4DO.1.3
Pages:
531 - 534
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-4DO.1.3
Price:
FREE
