Redirigiendo al acceso original de articulo en 15 segundos...
ARTÍCULO
TITULO

Hydrodynamic analysis of particle collection efficiency: comparing downflow and upflow filtration - doi: 10.4025/actascitechnol.v34i2.10803

Alexandre Botari    
Luiz di Bernardo    

Resumen

Models of the filtration phenomenon describe the mass balance in bed filtration in terms of particle removal mechanisms, and allow for the determination of global particle removal efficiencies. These models are defined in terms of the geometry and characteristic elements of granule collectors, particles and fluid, and also the composition of the balance of forces that act in the particle collector system. This work analyzes particles collection efficiency comparing downflow and upflow direct filtration, taking into account the contribution of the gravitational factor of the settling removal efficiency in future proposal of initial collection efficiency models for upflow filtration. A qualitative analysis is also made of the proposal for the collection efficiency models for particle removal in direct downflow and upflow filtration using a Computational Fluid Dynamics (CFD) tool. This analysis showed a strong influence of gravitational factor in initial collection efficiency (t = 0) of particles, as well as the reasons of their values to be smaller for upflow filtration in comparison with the downflow filtration. 

 Artículos similares

       
 
Yueling Wang and Xiaoliu Yang    
To simulate flood processes at the basin level, the GPU-based High-Performance Integrated Hydrodynamic Modelling System (HiPIMS) is gaining interest as computational capability increases. However, the difficulty of coping with rainfall input to HiPIMS re... ver más
Revista: Water

 
Khalid Oubennaceur, Karem Chokmani, Miroslav Nastev, Marion Tanguy and Sebastien Raymond    
A reliability approach referred to as the point estimate method (PEM) is presented to assess the uncertainty of a two-dimensional hydraulic model. PEM is a special case of numerical quadrature based on orthogonal polynomials, which evaluates the statisti... ver más
Revista: Water

 
Tanja Vonach, Franz Tscheikner-Gratl, Wolfgang Rauch and Manfred Kleidorfer    
Although calibration of a hydrodynamic model depends on the availability of measurement data representing the system behavior, advice for the planning of necessary measurement campaigns for model calibration is scarce. This work tries to address this que... ver más
Revista: Water

 
Zhen Cui, Zong-fu Fu, Wen-hong Dai and Zheng-qing Lai    
The implementation of floating structures has increased with the construction of new sluices for flood control. The overturning moment of floating structure and its influencing factors are the important parameters that determine the structural safety. It... ver más
Revista: Water

 
Yong Ma, Chao Hu, Yulong Li, Lei Li, Rui Deng and Dapeng Jiang    
Revista: Water