Optimization of sbr system for enhanced biological phosphorus and nitrogen removal

摘要

Aims: The aim of this study was the optimization of the SBR system forudenhanced biological phosphorus and nitrogen removal.udMaterials And Methods: A lab-scale SBR consisting filling, pre-anoxic,udanerobic, anoxic, aerobic, settling, decanting, and idle phases was proposedudfor simultaneous enhanced biological phosphorus and nitrogen removalud(SEBPNR) from wastewater. Synthetic wastewater was used in this research.udGlucose was used as a carbon source. The SBR was seeded with sludge fromuda local municipal wastewater treatment plant.udResults: The results indicates that the lab-scale SBR was capable to removeudsoluble phosphorus (SP), SCOD, TCOD, and ammonia, with efficiencies ofudaround 92%, 95%, 80%, and 85%, respectively. Optimized lab-scale SBRudoperational condition for SEBPNR consists of a fill (15 min), pre-anoxic (30 min),udanerobic (90 min), 1st aerobic (210 min), 2nd anoxic (55 min), 2nd aerobicud(10 min), settling (90 min), decant (10 min), and idle (10 min) phases.udConclusion: This study concludes that effective biological removal ofudphosphorus and nitrogen from wastewater using SBR occurs in sufficient HRTudin the anaerobic and aerobic stages, adequate COD/TP ratios (up to 35). Thisudsystem is suitable for high removal of P and N in both municipal and industrialudwastewater