Multiple choice technology

The rate of discharge over rapid sand filter is more than how many times that of slow sand filter

  1. 20

  2. 30

  3. 10

  4. 40
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rapid sand filters operate at significantly higher filtration rates (typically 100-200 m³/m²/day) compared to slow sand filters (3-5 m³/m²/day), resulting in approximately 30 times higher discharge rate. Options A (20x) and C (10x) underestimate the difference, while D (40x) overestimates it.

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