title: Simulation on combined rapid gravity filtration and backwash models.
abstract: 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 should not 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.
authors: Department of Civil, Environmental & Geomatic Engineering, University College London, London WC1E 6BT, UK. shejiao.han@ucl.ac.uk
authors: S J
authors: SJ
authors: Han
authors: C S B
authors: CS
authors: Fitzpatrick
authors: A
authors: A
authors: Wetherill
mesh_terms: D005374:Filtration / Q000379:methods*; D008962:Models, Theoretical; D018508:Water Purification / Q000379:methods