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Comparison of A(2)O and SBR Processes for the Advanced Biological Wastewater Treatment
Guo Lei; Lu Qihong; Xie Wenbiao; Shim Hojae
Conference Name5th International Congress of Chemistry and Environment
Conference DateMay 27-29, 2011
Conference PlacePort Dickson, Malaysia
Bench-scale anaerobic/anoxic/oxic (A2O) and sequencing batch reactor (SBR) processes were operated for the simultaneous organics and nutrient removal from synthetic wastewater. The effect of operating parameter, namely hydraulic retention time (HRT) was investigated at first. The optimized cycle time for SBR was as short as 6 hours, corresponding to 13.8 hours HRT, while the optimum total HRT for A2O process was also 13.8 hours. The A2O process possessed a relatively higher treatment capacity when the two reactors were with the same working volume. Under optimized HRT, the removal efficiencies for chemical oxygen demand (COD) and NH3-N were above 92 and 98% respectively for both processes. But effluent concentrations of nitrite and nitrate in A2O reactor were relatively higher than that in SBR reactor Phosphorus release and uptake in A2O reactor was negatively affected due to disrupt of anaerobic condition in the first tank. As a result, significant amounts of total nitrogen (TN, 93%) and total phosphorus (TP, 85%) were removed from synthetic wastewater in the SBR process, while slightly lower removal efficiencies of nitrogen and phosphorus were obtained in the A2O process.
KeywordSequencing Batch Reactor Anaerobic/anoxic/oxic (A2o) Reactor Biological Nutrients Removal
Indexed BySCI
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS SubjectChemistry, Multidisciplinary ; Environmental Sciences
WOS IDWOS:000294373200115
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionFaculty of Science and Technology
AffiliationDepartment of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Guo Lei,Lu Qihong,Xie Wenbiao,et al. Comparison of A(2)O and SBR Processes for the Advanced Biological Wastewater Treatment[C],2011:629-632.
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