title: Model-based optimisation of the biological performance of a sidestream MBR.
abstract: A model-based optimisation of the operation in view of the biological performance in terms of nitrogen (N) and phosphorus (P) removal of a pilot-scale side-stream MBR has been performed by means of a two-tier scenario analysis. The methodology uses two different scenario analyses to simulate the effect of three degrees of freedom in the MBR system: (1) DO set-point in the aerobic reactor, (2) sludge residence time and (3) internal recirculation rate. The scenarios are simulated using a calibrated ASM2d MBR model. Effluent quality, in terms of nitrate, ammonia and phosphate, is used to select the best scenario. It proved to be a compromise between nitrogen and phosphorus removal as these are linked. A 42% reduction in ammonium and a 32% reduction in nitrate concentration were achieved. Phosphate removal is partly sacrificed (39% increase) compared to the standard operation.
authors: BIOMATH, Department of Applied Mathematics, Biometrics and Process Control, Ghent University, Coupure Links 653, 9000 Gent, Belgium. ingmar.nopens@.ugent.be
authors: I
authors: I
authors: Nopens
authors: G
authors: G
authors: Sin
authors: T
authors: T
authors: Jiang
authors: L
authors: L
authors: d'Antonio
authors: S
authors: S
authors: Stama
authors: J
authors: J
authors: Zhao
authors: P A
authors: PA
authors: Vanrolleghem
mesh_terms: D019149:Bioreactors; D008962:Models, Theoretical; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism; D010758:Phosphorus / Q000302:isolation & purification / Q000378:metabolism; D015203:Reproducibility of Results; D012722:Sewage / Q000032:analysis; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods
chemical_list: D012722:Sewage; D010758:Phosphorus; D009584:Nitrogen