title: Simulation of combined rapid gravity filtration and backwash models.
abstract: Combined rapid gravity filtration and backwash models are applied to simulate filtration and backwash cycles. The simulated results from the backwash model suggest that air flow rate can be optimised to maximise particle removal efficiency in the backwash for a particular system. The simulation of combined rapid gravity filtration and backwash models suggests that efficient backwash operation is essential for maintaining the life time of a filter. However, the filter is not advised to be completely cleaned up in the backwash and the particles retained on filter grains after the backwash can be beneficial for subsequent filtration runs.
authors.affiliation: Department of Civil, Environmental & Genomatic Engineering, University College London. London, UK. shan@merpro.com
authors.forename: S J
authors.initials: SJ
authors.lastname: Han
authors.forename: C S B
authors.initials: CS
authors.lastname: Fitzpatrick
authors.forename: A
authors.initials: A
authors.lastname: Wetherill
mesh_terms: D000388:Air / Q000032:analysis; D005374:Filtration / Q000379:methods*; D006112:Gravitation; D008962:Models, Theoretical; D013997:Time Factors; D018508:Water Purification / Q000379:methods*