Combined rapid gravity filtration and backwash models have been applied to simulate filtration and backwash cycles. The simulated results from the backwash model suggest that an optimum air flow rate exists to maximise particle removal efficiency in the backwash operation for a certain backwash system. The simulation of combined rapid gravity filtration and backwash models suggests that the filter shouldn't be completely cleaned up in the backwash and a certain amount of particles retained on filter grains after backwash can be beneficial for subsequent filtration runs. This is consistent with the experimental results in the literature.
Research Article|June 01 2009
Simulation on combined rapid gravity filtration and backwash models
S. J. Han
C. S. B. Fitzpatrick
Water Sci Technol (2009) 59 (12): 2429-2435.
S. J. Han, C. S. B. Fitzpatrick, A. Wetherill; Simulation on combined rapid gravity filtration and backwash models. Water Sci Technol 1 June 2009; 59 (12): 2429–2435. doi: https://doi.org/10.2166/wst.2009.308
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