Question

A town is required to treat 5.0 m³/min of raw water for daily domestic supply. Flocculating particles are to be produced by chemical coagulation. A column analysis indicated that an overflow rate of 0.3 mm/s will produce satisfactory particle removal in a settling basin at a depth of 4.0 m. The required surface area (in m²) for settling is (approx.)

• A. 277.7
• B. 200.5
• C. 350.7
• D. 150.5

Answer 1

Answer: (A)