title: Aerobic granules formation and simultaneous nitrogen and phosphorus removal treating high strength ammonia wastewater in sequencing batch reactor.
abstract: The objective of this study was to evaluate aerobic granules formation and simultaneous nitrogen and phosphorus removal treating high strength ammonia wastewater in sequencing batch reactor (SBR). After successful aerobic granulation, mixed liquor suspended solids (MLSS) concentrations of the SBR increased from 3.11 to 14.52 g/L, while sludge volume index (SVI) values decreased from 144.61 to 30.32 mL/g. Protein (PN) and polysaccharide (PS) concentrations increased from 60.2 and 12.5 mg/L to 101.1 and 15.8 mg/L, respectively. Simultaneous nitrogen and phosphorus removal was enhanced by altering the influent chemical oxygen demand/nitrogen (COD/N) ratio. At COD/N ratio of 9, total nitrogen (TN) and total phosphorus (TP) removal efficiencies were up to 89.8% and 77.5%, respectively. Three-dimensional excitation-emission matrix (3D-EEM) spectroscopy showed that the chemical compositions of sludge EPS were changed during granulation process. The results could provide useful information to promote nitrogen and phosphorus removal using aerobic granular sludge technology.
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Wei
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.
authors.forename: Li
authors.initials: L
authors.lastname: Shi
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Yan
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.
authors.forename: Ge
authors.initials: G
authors.lastname: Zhang
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China.
authors.forename: Yifan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, PR China. Electronic address: dubin61@gmail.com.
authors.forename: Bin
authors.initials: B
authors.lastname: Du
mesh_terms: D000332:Aerobiosis; D000641:Ammonia / Q000032:analysis*; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D009584:Nitrogen / Q000302:isolation & purification* / Q000378:metabolism; D010758:Phosphorus / Q000302:isolation & purification* / Q000378:metabolism; D013050:Spectrometry, Fluorescence; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis* / Q000382:microbiology; D018508:Water Purification / Q000379:methods*
chemical_list: D000641:Ammonia; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater
keywords: Aerobic granular sludge; High strength ammonia wastewater; Sequencing batch reactor; Simultaneous nitrification and denitrification (SND)