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Updated: Jul 11, 2026
11:31
Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
Published on: July 13, 2012
Improved split feed anaerobic baffled reactor (SFABR) for shorter start-up period and higher process performance
S Uyanik1, P J Sallis, G K Anderson
1Department of Civil Engineering, University of Newcastle, Newcastle upon Tyne, UK.
Summary
This study introduces the Split Feed Anaerobic Baffled Reactor (SFABR) for wastewater treatment. Using improved seed materials significantly shortens start-up times and enhances efficiency, even for challenging ice-cream wastewater.
Area of Science:
- Environmental Engineering
- Wastewater Treatment Technologies
- Anaerobic Digestion
Background:
- Conventional anaerobic reactors face challenges with slow start-up times and stability, especially for high-strength industrial wastewaters.
- Ice-cream wastewater presents unique treatment difficulties due to its composition.
- Optimizing seed material is crucial for efficient anaerobic digestion performance.
Purpose of the Study:
- To introduce the Split Feed Anaerobic Baffled Reactor (SFABR) design.
- To investigate the impact of modified seed materials on SFABR start-up and performance.
- To evaluate SFABR efficiency in treating problematic wastewater like ice-cream effluent.
Main Methods:
- Implementation of a novel Split Feed Anaerobic Baffled Reactor (SFABR) configuration.
- Utilizing modified seed materials, including polymer-conditioned anaerobic sludge and granular sludge.
- Comparative analysis against conventional Attached Growth Reactor (AGR) systems.
- Employing Scanning Electron Photo-micrographs (SEM) to analyze sludge granulation and microbial populations.
Main Results:
- Shorter and more reliable start-up times were achieved with SFABR using improved seed materials.
- Rapid sludge granulation was observed in SFABR compared to other configurations.
- SFABR demonstrated efficient treatment of ice-cream wastewater.
- The reactor maintained a diverse population of methanogens across all compartments.
- Polymer-conditioned and granular sludge outperformed suspended growth sludge.
Conclusions:
- The SFABR, particularly with improved seed materials, offers a more efficient and stable solution for wastewater treatment.
- The enhanced granulation and microbial diversity contribute to the reactor's superior performance.
- SFABR is a promising technology for handling challenging industrial wastewaters.
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