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Note:

  1. The particle diameter assumed in this calculation is 200 microns.
  2. Specific density (d) = 2.65
  3. Vertical velocity range = 0.016-0.021 m/s for 0.2 mm particles
  4. Horizontal velocity limit = 0.15-0.30 m/s usually 0.2 m/s
  5. Detention time (at peak flow) =30-90sec usually 60s
  6. Depth range = 1-1.5 m
  7. Length range = 3-25 m
  8. Allowance for inlet and outlet turbulence = 25% to 50% (based on theoretical length)