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Treatment of brewery slurry in thermophilic anaerobic sequencing batch reactor.

Authors
  • Zupancic, Gregor D
  • Straziscar, Matej
  • Ros, Milenko
Type
Published Article
Journal
Bioresource Technology
Publisher
Elsevier
Publication Date
Oct 01, 2007
Volume
98
Issue
14
Pages
2714–2722
Identifiers
PMID: 17126547
Source
Medline
License
Unknown

Abstract

Treatment of brewery slurry in a thermophilic anaerobic sequencing batch reactor (ASBR) was studied using conventional fully mixed semi-continuous digestion as a control. The process phases were adapted to fit the brewery slurry discharge schedule. ASBR experiments were conducted under different organic loading rates (OLR) from 3.23 to 8.57 kg of COD/m(3)day of reactor and control was conducted with OLR of 3.0 kg of COD/m(3)day. The ASBR COD degradation efficiency was from 79.6% to 88.9%, control experiment efficiency was 65%. ASBR VSS removal efficiency was from 78.5% to 90.5%, control experiment efficiency was 54%. The ASBR methane production yield was from 371 to 418 L/kg COD inserted, control experiment methane yield was 248 L/kg COD inserted. The ASBR process was superior to conventional fully mixed digestion, and is fully adaptable to brewery slurry discharge, needs no additional collection and settling pools and experiences no solids settling problems.

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