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Five rectangular settling basins are operated in parallel to settle a total of 8200 m³/d water.

Each basin has the following dimensions: 32 m long, 6 m wide, and 4 m deep.

Determine the detention time and the Overflow rate?

O The detention time=5 hrs and the Overflow rate=19.3 m³/(m².d)

O The detention time=3 hrs and the Overflow rate=31 m³/(m².d)

The detention time=7 hrs and the Overflow rate=112 m³/(m².d)

O The detention time=11 hrs and the Overflow rate=8.5 m³/(m².d)

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