Finding design basis
Collecting flow, water quality and project requirements.
Engineering Calculation System
Engineering calculations shouldn’t start from scratch every time.
AIDIA helps engineers perform common water and wastewater design calculations through structured Excel modules with transparent formulas, engineering criteria, automated checks, and review-ready outputs.
Transparent Formulas
Design Criteria
Built-in Checks
Review-Ready Outputs
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AIDIA
Circular Sedimentation Basin Design
Design Inputs
| Parameter | Value | Unit |
|---|---|---|
| Design flow rate | 10,000 | m³/d |
| Surface overflow rate | 30 | m³/m²·d |
| Side water depth | 3.0 | m |
| Freeboard | 0.3 | m |
| Number of basins | 2 | — |
| Peak factor | 1.5 | — |
Calculated Outputs
| Parameter | Value | Unit |
|---|---|---|
| Surface area / basin | 166.7 | m² |
| Basin diameter | 14.6 | m |
| Side water depth | 3.0 | m |
| Detention time | 2.4 | hr |
| Weir length | 45.8 | m |
READ MECOVERCALCULATIONDASHBOARDDESIGN CRITERIAABBREVIATIONS
The calculation is often not the hardest part.
Much of an engineer’s time is spent around the calculation — finding references, tracing formulas, checking criteria, and keeping workbooks consistent.
Searching criteria
Looking through references and design guidelines.
Rebuilding old sheets
Copying and modifying previous project workbooks.
Tracing formulas
Understanding how outputs were actually calculated.
Reviewing inconsistent workbooks
Different formats and logic across projects.
Repeating manual checks
Rechecking calculations and criteria every time.
Built from the kind of spreadsheets we wished we had.
Engineering spreadsheets often grow from old project files, textbook equations and repeated revisions. They work, but over time they can become difficult to trace, standardize and share.
AIDIA was created to make this workflow more structured — with consistent layouts, clear formulas, built-in design criteria and review-ready outputs, based on real engineering practice.
Textbook equations →
Project experience →
Design criteria →
A more structured and consistent engineering workflow.
How AIDIA Works
A structured workflow from input to engineering output.
1
Design Input
Enter project data and design parameters.
2
Engineering Calculation
Apply transparent formulas.
3
Design Criteria
Check against relevant standards.
4
Design Check
Automatic checks and flagging.
5
Equipment Sizing
Calculate and size key equipment.
6
Engineering Output
Generate review-ready outputs.
Inside Every AIDIA Module
A consistent structure across every calculation.
READ MEOverview, scope, assumptions and user instructions.
COVERProject information, revision history and general notes.
CALCULATIONMain calculation sheet with inputs, formulas and results.
DASHBOARDSummary of key results, charts and design highlights.
DESIGN CRITERIAApplicable design criteria and references.
ABBREVIATIONSCommon symbols and abbreviations used in the module.
Designed for Engineering Review
A calculation should be understandable by the next engineer who opens it.
| Description | Symbol | Formula | Unit | Notes |
|---|---|---|---|---|
| Design flow rate | Q | Input | m³/d | From project data |
| Surface overflow rate | SOR | Input | m³/m²·d | Typical range: 20–40 |
| Required surface area | A | A = Q / SOR | m² | Per basin |
| Basin diameter | D | D = √(4A/π) | m | Circular basin |
| Side water depth | h | Input | m | Typical range: 2.5–4.0 |
| Detention time | t | t = (A × h) / Q | hr | Hydraulic retention time |
| Weir length | Lw | Lw = π × D | m | Per basin |
No Black Box
Know how the result was calculated.
Formula Trace Example: Surface Area Calculation
Inputs
Q = 10,000 m³/d
SOR = 30 m³/m²·d
SOR = 30 m³/m²·d
→
Formula
A = Q / SOR
10,000 / 30
→
Output
333.3 m²
Required surface area
- ✓ Inputs remain visible
- ✓ Formulas remain traceable
- ✓ Design criteria are identified
- ✓ Results remain reviewable
⚖ AIDIA supports engineering judgement — it does not replace it.
Built-in Design Checks
Not just calculated. Checked.
| Parameter | Result | Criteria | Status | Notes |
|---|---|---|---|---|
| Surface overflow rate (SOR) | 30 m³/m²·d | ≤ 40 m³/m²·d | PASS | Within typical range |
| Detention time (HRT) | 2.4 hr | 1.5–4.0 hr | PASS | Within typical range |
| Side water depth | 3.0 m | 2.5–4.0 m | PASS | OK |
| Weir loading rate | 218 m³/m·d | ≤ 250 m³/m·d | PASS | OK |
| Sludge storage volume | 120 m³ | ≥ 100 m³ | PASS | OK |
| Freeboard | 0.3 m | ≥ 0.3 m | PASS | Minimum recommended |
| Diameter to depth ratio | 4.9 | 3–5 | REVIEW | Confirm against project-specific criteria |
Calculation Library
Modular tools for water and wastewater design.
Water Treatment
- Sedimentation BasinAvailable
- Circular Sedimentation BasinAvailable
- FlocculatorAvailable
- Pressure Sand FilterAvailable
- Activated Carbon FilterIn Development
- UV DisinfectionIn Development
Wastewater Treatment
- Activated Sludge (ASP)Available
- SBRAvailable
- MBBRIn Development
- Anaerobic DigesterIn Development
- Equalization TankIn Development
- Trickling FilterIn Development
Sludge Treatment
- Gravity ThickenerAvailable
- Belt Filter PressAvailable
- CentrifugeIn Development
- Sludge Storage TankAvailable
- Sludge ConditioningIn Development
- Sludge Drying BedIn Development
Separation & Environmental
- Gas StrippingAvailable
- Air StripperIn Development
- BiofilterIn Development
- API SeparatorAvailable
- Oil Water SeparatorIn Development
- Carbon AdsorberIn Development
Engineering Resources
Useful engineering references and guides.
Understanding Surface Overflow Rate
What it is, how it affects performance and typical design ranges.
Read more →Gravity Thickener Design Criteria
Key parameters, design considerations and common criteria.
Read more →How to Select Flocculation G-Value
Factors affecting G-value and typical ranges for different applications.
Read more →Hydraulic Retention Time Explained
Definition, calculation and its role in treatment performance.
Read more →Where AIDIA fits in your work.
Process Engineer
Design and evaluate treatment processes.
Consultant
Prepare calculations for client projects.
Freelancer
Deliver consistent, professional workbooks.
Junior Engineer
Learn and apply standard methods.
Engineering Team
Standardize calculations across projects.
AIDIA helps with
- Structured calculations
- Equipment sizing
- Criteria checking
- Documentation
- Repeatable workflows
AIDIA does not replace
- Engineering judgement
- Project-specific decisions
- Regulatory review
- Vendor confirmation
- Professional approval
A Growing Engineering System
From calculation modules to engineering system.
▤Design Basis
◫Mass Balance
⚙Process Design
▦Equipment Calculation
▤Process Datasheet
▣Engineering Report
AIDIA is being developed as a modular engineering ecosystem, with calculation modules as the foundation for a more complete set of engineering tools.
Simple and flexible access.
Individual Module
US$49
- Single calculation module
- Full features and updates
- Use in commercial projects
Engineering Bundle
US$199
- Any 5 calculation modules
- Full features and updates
- Use in commercial projects
Complete Library
US$499
- All current and future modules
- Full features and updates
- Use in commercial projects
Frequently Asked Questions
Yes. The workbook is designed to keep engineering logic visible and reviewable. Final protection settings can be adjusted later based on your product policy.
Each module can include design criteria, references, calculation notes, and the basis used for the design method.
This placeholder answer can later be replaced with the exact supported Microsoft Excel desktop versions you decide to publish.
The final license terms should define commercial usage, redistribution limits, and project-specific engineering responsibility.
No. AIDIA supports structured calculations and review; it does not replace project-specific engineering judgement, regulatory review, vendor confirmation, or professional approval.