Granular filter media (effective sizes from 0.5 to 1.5 mm) generally remove particles larger than 7 to 10 percent of the smallest grains. Most water treatment applications try to remove color and all solids greater than 10 to 20 microns. Smaller particles are removed with the...
Rehabilitating Gravity Filters
A dual parallel lateral configuration in a media filter underdrain offers advantages in effective backwashing and efficient filtration.
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