Achieving stably enhanced biological phosphorus removal from aerobic granular sludge system via phosphorus rich liquid extraction during anaerobic period
Journal
Bioresource Technology
Journal Volume
346
Date Issued
2022
Author(s)
Abstract
In order to sustainably manage wastewater treatment plants and the environment, enhanced biological phosphorus (P) removal (EBPR) was proposed to achieve P recovery through extracting P-rich liquid (i.e., Phostrip) from the bottom of aerobic granular sludge (AGS)-based sequencing batch reactors (SBRs) under no mixing during the anaerobic phase. Results showed both tested bacterial AGS (BAGS) and algal-bacterial AGS (A-BAGS) systems stably produced low effluent P (<0.05 mg-P/L) with little impact on their organics and NH4+-N removals (>99%). The collected P-rich liquids (55–83 mg-P/L) from both systems showed great potential for P recovery of about 83.85 ± 0.57 % (BAGS) or 83.99 ± 0.77% (A-BAGS), which were contributed by the influent P (>95%) and P reserves in granules based on P balance analysis. This study suggests that the AGS-based SBRs coupling the Phostrip holds great potentials for P recovery profit and further reduction in energy consumption. ? 2021 Elsevier Ltd
Subjects
Algal-bacterial aerobic granular sludge
Bacterial aerobic granular sludge
Enhanced biological phosphorus removal
Phosphorus-rich liquid extraction
Bacteria
Batch reactors
Biological water treatment
Effluent treatment
Effluents
Energy utilization
Granular materials
Liquids
Recovery
Solvent extraction
Wastewater treatment
Aerobic granular sludges
Anaerobics
Granular sludge systems
Liquid extraction
Sequencing batch reactors
Phosphorus
anoxic conditions
effluent
extraction method
oxic conditions
phosphorus
pollutant removal
sludge
wastewater treatment plant
Article
aerobic metabolism
anaerobic growth
bioreactor
sewage
nitrogen
Aerobiosis
Anaerobiosis
Bioreactors
Nitrogen
Sewage
Waste Disposal, Fluid
SDGs
Type
journal article