Industrial Filtration, Separation & Dust Collection worked example

Sludge Volume at 92% dewatering efficiency: a worked example

This scenario runs the sludge volume calculation on the strong side: 92% dewatering efficiency, with every other input held at its documented default. Use it when planning filter press cake handling, settling tank removal, liquid filter sludge disposal, or wastewater solids handling.

The inputs for this scenario

  • Slurry volume processed: 12,000 gal (unchanged)
  • Sludge generated per gallon: 0.04 gal / gal (unchanged)
  • Dewatering efficiency: 92 % (raised for this scenario; the documented default is 80)

Working through the calculation

  • Applying the documented formula (Required sludge volume = slurry volume processed × sludge generated per gallon ÷ dewatering efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 457 gal for required quantity, the number this scenario is built around.
  • At this operating point the engine returns 420 gal for theoretical sludge volume.
  • At this operating point the engine returns 36.52 gal for sludge volume allowance.
  • At this operating point the engine returns 92 % for efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where dewatering efficiency sits at 80% and the headline result is 525 gal, this scenario comes in 13.04% below the baseline at 457 gal.
  • Use it when sizing sludge holding tanks, planning haul-off frequency, or evaluating a new dewatering unit's effect on disposal volume. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required quantity: 457 gal (headline result)
  • Theoretical sludge volume: 420 gal
  • Sludge volume allowance: 36.52 gal
  • Efficiency: 92 %

Run it with your numbers

  • Every input above is editable in the live Sludge Volume calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.