Design and Construction of Slow Sand Filtersby Ronald C. Sims, Utah State Univ, Logan, UT, USA,
J. Val Toronto, Utah State Univ, Logan, UT, USA,
Abstract: The belief that large area requirements are necessary is based on old concepts and contemporary engineering designs that overstate area requirements. Large area requirements result from the utilization of low flow rates, and inflexibility in the utilization of the entire plant. A population of 10,000, using 250 g.p.c.d. from a 100 g.p.d./s.f. plant, could be served by a 0.86 acre surface water facility. For area comparison, a lagoon waste water plant at a load of 50 lb. B.O.D./ac/pd requires 40 acres of surface water. This comparison indicates that s.s.f. requirements are 2.2% of a conventional lagoon waste water plant. Additional aspects of the subject are discussed.
Subject Headings: Water treatment plants | Sand filters | Flow rates | Surface water | Comparative studies | Lagoons | Wastewater management | Wastewater treatment plants
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