// multi-utility computation suite · offline · instant · precise
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eng.sedimentation-tank-overflow Calculator
Calculates sedimentation tank surface overflow rate, detention time, and effluent quality from flow and suspended solids data. Primary sedimentation tanks are designed at overflow rates of 25–50 m³/m²/day — at this rate, particles with settling velocity above the overflow rate are captured.
Inputs
Flow M3 Day
Volume of fluid per unit time. Used to size pipes, pumps, and ducts.
Tank Surface M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Particle Density Kg M3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
D50 Um
Distance across a circle through its centre. Always confirm units match the rest of the calculation.
Results
surface overflow rate OR (m³/m²·day)
The value at the specified point or condition.
Stokes settling velocity vs (m/day)
Sample size or count used in the calculation.
removal efficiency
Useful output divided by total input, as a percentage. True 100% efficiency is impossible — losses appear as heat. LEDs: 30–50%. Electric motors: 85–97%. Switching supplies: 85–95%.
OR guideline
Sample size or count used in the calculation.
vs = ρp·g·d²/(18μ)
Reference formula or conversion factor shown for context.