INVESTIGADORES
FUENTES MORA Mauren
congresos y reuniones científicas
Título:
Optimization of hybrid anaerobic-aerobic SBR-based systems.
Autor/es:
FUENTES, M.; SCENNA, N.; AGUIRRE, P.
Lugar:
Londres
Reunión:
Simposio; ESCAPE22: 22nd European Symposium on Computer Aided Process Engineering; 2012
Resumen:
This work deals with optimization of
biological hybrid systems based on both anaerobic and aerobic sequential batch
reactors (SBRs). The global model can address the differences between aerated
and anaerobic systems by assigning adequate parameter values related to the
presence of oxygen in the medium, aeration and sedimentation times, and
selecting the kinetics model to represent the digestion stage. An existing set
of experimental data is used for model validation. Fluctuating operation
conditions during cycles such as disturbances in the organic loading rate, feed
and recycle flow rates and changes in the hydrodynamic regime result in strong
numerical discontinuities that are included in the simulation schedules. Optimization
results are based on minimizing the reaction time/total cycle time ratio
subjected to (pH, DO and nitrite) path constraints and interior- and end-point
constraints related to the (COD and nitrogen) pollutant removal efficiency and
settling conditions. A decrease of 29% in the total cycle time, i.e. an
increase in the organic loading rate from 443 to 611 mg dm-3 d-1
is reached without modifying the quality of effluent. gOPT tool of gPROMS was
used to perform the dynamic optimization.