An existing rectangular clarifier at a drinking water treatment plant is 18 ft wide and 72 ft long. It was originally designed for an overflow rate of 600 gpd/ft2 and it is currently operating at its design capacity. Inclined-tube settling bundles are to be added and will occupy 80 percent of the plan area, inlet flow distribution systems for the retrofitted tube bundles excludes flow through the remaining 20 percent of the surface area. Tube bundles will have a design overflow rate of 5,000 gpd/ft2 . Complete an analysis to determine the present capacity in gal/day, and the increased capacity in gal/day after the tube bundles are installed.
An existing rectangular clarifier at a drinking water treatment plant is 18 ft wide and 72 ft long. It was originally designed for an overflow rate of 600 gpd/ft2 and it is currently operating at its design capacity. Inclined-tube settling bundles are to be added and will occupy 80 percent of the plan area, inlet flow distribution systems for the retrofitted tube bundles excludes flow through the remaining 20 percent of the surface area. Tube bundles will have a design overflow rate of 5,000 gpd/ft2 . Complete an analysis to determine the present capacity in gal/day, and the increased capacity in gal/day after the tube bundles are installed.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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An existing rectangular clarifier at a drinking water treatment plant is 18 ft wide and 72 ft
long. It was originally designed for an overflow rate of 600 gpd/ft2 and it is currently
operating at its design capacity. Inclined-tube settling bundles are to be added and will
occupy 80 percent of the plan area, inlet flow distribution systems for the retrofitted tube
bundles excludes flow through the remaining 20 percent of the surface area. Tube
bundles will have a design overflow rate of 5,000 gpd/ft2
. Complete an analysis to
determine the present capacity in gal/day, and the increased capacity in gal/day after the
tube bundles are installed.
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