Plate Settler Capacity Calculation
How Much Flow Can a Unit Treat?
The inverse of sizing: given an existing plate settler’s projected area, calculate the flow it can clarify to a target effluent quality.
Plate Settler Capacity Calculation
When evaluating an existing unit — for a retrofit, capacity check or second-hand assessment — you calculate capacity rather than size from scratch. The projected area is known; the question is the treatable flow.
Multiply the total projected settling area by the surface loading rate the application can sustain to obtain maximum treatable flow. Choose the SLR conservatively if effluent quality is critical.
This calculation is also used to check whether an existing conventional tank, once fitted with a lamella pack, will meet a higher throughput — the basis of most retrofit projects.
Q_max = A_projected × SLRMaximum treatable flow for the given area and loading rate.
Calculation Basis
Free Sizing Check
Try the interactive Plate Settler Sizing Calculator, or send us your flow and water-quality data for a preliminary sizing at no cost.
Key Considerations
Retrofit Check
Confirm an upgraded tank meets the new target flow before committing.
Conservative SLR
Lower the SLR where effluent quality must be guaranteed.
Sludge Limit
Verify the sludge system can handle the higher solids load at Q_max.
Request an Engineering Assessment
Our engineers will review your application, flow rates, and water quality data to recommend the optimal plate settler configuration.