Current application of clean water aeration test standards for wastewater treatment systems
is reviewed with a focus on problematic interpretations and practices of the most commonly …

The hydraulic efficiency of water process tanks can be significantly improved by performing
simple modifications in the initial geometries of the tanks. This concept was applied in the …

A three-dimensional three-phase fluid model, supplemented by laboratory data, was
developed to simulate the hydrodynamics, oxygen mass transfer, carbon oxidation …

The operating condition of an oxidation ditch (OD) has significant impact on energy
consumption and effluent quality of wastewater treatment plants (WWTPs). An …

A general dynamic model, including biological processes, hydraulics, oxygen transfer and
temperature, was developed for the activated sludge reactor. Transport of wastewater …

Oxidation-ditch operation modes were simulated using sequencing batch reactors (SBRs)
with alternate stirring and aerating. The nitrogen-removal efficiencies and nitrifying …

The use of artificial neural networks (ANN) for modeling complex processes is an attractive
approach that has been successfully applied in various fields. However, in many cases the …

A river water quality model is presented for the prediction of the concentration fields of the
water quality variables in an oxidation ditch performing carbon oxidation, nitrification and …

The aim of this work is to investigate the co-influence of hydrodynamics, oxygen transfer and
biological activity in an oxidation ditch via the comparison of a predictive model and …

In order to optimize the flow field in a full-scale Carrousel oxidation ditch with many sets of
disc aerators operating simultaneously, an experimentally validated numerical tool, based …