Preliminary Sizing
Determine the required thickener surface area, the number of operating units, and circular tank diameter based on the design solids loading.
Engineering Excel Workbook
Gravity Thickener Design Calculation
Design a circular gravity thickener for combined primary sludge and waste activated sludge using a structured Excel workbook. Evaluate dry-solids loading, required surface area, unit diameter, estimated thickened-sludge flow, and preliminary design compliance.
Excel WorkbookLinked Design DashboardEngineering Review
What This Module Helps You Design
Sludge Thickening Evaluation
Estimate combined sludge characteristics, thickened underflow, supernatant flow, and the expected reduction in sludge volume.
Engineering Review
Review hydraulic loading, sludge blanket considerations, and design checks in one traceable calculation workbook.
Calculation Coverage
A linked calculation sequence from sludge feed characteristics through circular thickener sizing, estimated underflow, and design review.
Sludge Feed & Solids Load
- Primary sludge and WAS flow inputs
- Sludge solids concentration and specific gravity
- Combined feed flow and dry-solids load
- Combined sludge solids content
Circular Thickener Sizing
- Selected solids loading rate
- Required thickener surface area and unit count
- Calculated thickener diameter per unit
- Hydraulic loading rate and sludge blanket volume
Thickening Performance & Review
- Target thickened sludge solids concentration
- Estimated thickened sludge underflow
- Supernatant flow and volume reduction
- Solids-loading, hydraulic, geometry, and sludge blanket checks
Workbook Experience
See the Complete Engineering Workflow
Review actual calculation inputs and the linked Dashboard before purchasing the workbook.
Actual Gravity Thickener dashboard excerpt. The displayed figures are illustrative workbook results, not a guarantee of project-specific performance.
Built-in Design Checks
Screen the preliminary thickener sizing against the adopted hydraulic and solids-loading requirements.
| Review Item | Workbook Evaluation |
|---|---|
| Solids loading | Check the selected loading rate against the adopted solids-loading range |
| Hydraulic loading | Evaluate thickener hydraulic loading at the combined sludge flow |
| Thickener diameter | Review the circular tank diameter against the selected limit |
| Target underflow | Review the adopted thickened-solids concentration and estimated flow |
| Sludge blanket and volume ratio | Check sludge blanket depth and operating volume relationship |
These checks support preliminary process evaluation only. Sludge settleability, tank mechanical equipment, rake torque, feedwell design, outlet weir, and vendor requirements must be reviewed separately.
What's Included
READ ME
Purpose & instructions
Cover
Project information
Calculation
Sludge loading, sizing & thickening
Dashboard
General arrangement & design summary
Design Criteria
Design basis & evaluation guidance
Abbreviations
Symbols & units
AIDIA supports preliminary engineering calculation and review. Final project decisions remain subject to project-specific criteria, professional engineering judgement, and vendor confirmation.
Complete Your Gravity Thickener Design
Move from sludge feed data and loading assumptions to a structured gravity thickener sizing and design-review workbook.