You would like to adapt a "roll-off box" as a sediment settling tank . A typical "roll-off" box is rectangular, 2.5 m wide by 4 m long by 1.5 m high. You plan to pump the water into one end of the tank such that it is uniformly distributed across the width and depth of the tank. Similarly, at the other end of the tank, water will be drawn uniformly from the full width and depth of the tank. Assume the sediment settles at a constant velocity and that any sediment that settles to the bottom of the tank sticks to the bottom and is removed. You can ignore diffusion as a transport process. How much flow can you pass through the box and still achieve 85% removal?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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You would like to adapt a "roll-off box" as a
sediment settling tank. A typical "roll-off" box is
rectangular, 2.5 m wide by 4 m long by 1.5 m
high. You plan to pump the water into one end of
the tank such that it is uniformly distributed across
the width and depth of the tank. Similarly, at the
other end of the tank, water will be drawn
uniformly from the full width and depth of the
tank. Assume the sediment settles at a constant
velocity and that any sediment that settles to the
bottom of the tank sticks to the bottom and is
removed. You can ignore diffusion as a transport
process. How much flow can you pass through
the box and still achieve 85% removal?
Transcribed Image Text:You would like to adapt a "roll-off box" as a sediment settling tank. A typical "roll-off" box is rectangular, 2.5 m wide by 4 m long by 1.5 m high. You plan to pump the water into one end of the tank such that it is uniformly distributed across the width and depth of the tank. Similarly, at the other end of the tank, water will be drawn uniformly from the full width and depth of the tank. Assume the sediment settles at a constant velocity and that any sediment that settles to the bottom of the tank sticks to the bottom and is removed. You can ignore diffusion as a transport process. How much flow can you pass through the box and still achieve 85% removal?
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