In the last two decades, Computational Fluid Dynamics (CFD) has proven to be a powerful and efficient tool to study turbulent phenomena occurring in the units of water treatment plants.Specifically, some literature studies focused the attention on the hydraulic and sanitary efficiency of disinfection reactors and on flow and tracer transport in those tanks.The traditional contact tanks, being structurally constituted by rectangular cham- bers and vertical baffles, present several zones with a whirling motion. Specifically, the flow field is characterized by large areas in which water speed decreases or even vanishes, or where stable recirculation phenomena occur. These turbulent phenomena inside disinfection basins must be avoided since they modify flow from the ideal plug-flow conditions.
Large Eddy Simulation of Contact Tanks for Disinfection in Drinking Water Treatment
Di Bella, G.;De Marchis, M.
2020-01-01
Abstract
In the last two decades, Computational Fluid Dynamics (CFD) has proven to be a powerful and efficient tool to study turbulent phenomena occurring in the units of water treatment plants.Specifically, some literature studies focused the attention on the hydraulic and sanitary efficiency of disinfection reactors and on flow and tracer transport in those tanks.The traditional contact tanks, being structurally constituted by rectangular cham- bers and vertical baffles, present several zones with a whirling motion. Specifically, the flow field is characterized by large areas in which water speed decreases or even vanishes, or where stable recirculation phenomena occur. These turbulent phenomena inside disinfection basins must be avoided since they modify flow from the ideal plug-flow conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
