This study focuses on the settling step (solid-liquid gravity driven separation) in conventional
drinking water treatment plants. To simulate settler performance, a numerical model is
presented herein. The model takes into account the presence of the sludge by adding a 1D
settling source term. The expression of the source term is fitted on a well-known test case, the
single batch-settling test. An advection equation is solved by a finite difference method and
validated experimentally. Moreover, the comparison between batch and numerical settling
curves gives a sludge parameter estimation of the Takacs settling velocity model. The
coupling of this model with CFD is implemented in the ESTET-ASTRID software. First
results on an industrial application show the model efficiency. A lab-scale pilot dedicated to
the validation of the CFD model is described and hydrodynamics results are presented. Includes 17 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 450 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/02/2003 |
