Vigneswaran, S, Tam, DM & Visvanathan, C 1983, 'Water filtration technologies for developing countries', ENVIRON. SANIT. REV., vol. 10 . 12.
Vigneswaran, S 1970, 'IMPORTANCE OF SIMULATION IN DEEP BED FILTRATION.', pp. 331-334.
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In deep bed filtration, the removal of particles in the suspension is complex and depends on numerous filtration parameters. The mathematical models describing deep bed filtration involve several filtration coefficients which are characteristic of the particular suspension to be filtered and the type of filter media used. If these coefficients are evaluated from a limited number of filter experiments, filtration performance can be simulated for any operating conditions which would be helpful in designing the filter in a rational manner. This paper presents the simulation of dual media and radial filters from a limited number of conventional (vertical down flow) filter experiments. The simulated and experimental results are found to be comparable which indicates the usefulness of simulation in deep bed filtration.
Vigneswaran, S, Rabbani, WI & Naw, MS 1970, 'IMPORTANCE OF LABORATORY SCALE STUDY FOR THE DESIGN OF MOBILE-BED FILTER.', pp. 169-178.
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Filters with mobile-bed arrangement eliminate the problem of back washing and use the entire filter bed in efficient filtration action. The optimum values of operational parameters of mobile-bed filter (sand-recycling rate, sludge-withdrawal rate, filter media specifications, filtration rate) can be evaluated from laboratory-scale experiments with the particular water to be treated. These values can be used to design a plant-scale mobile-bed filter in a rational manner.
