Contaminant-Based Adsorption Screening
Select a contaminant and review linked Freundlich isotherm parameters, estimated adsorption capacity, and carbon usage.
Engineering Excel Workbook
GAC Contactor Design Calculation
Size a fixed-bed granular activated carbon (GAC) contactor using contaminant-specific adsorption isotherm data. Evaluate carbon capacity, vessel dimensions, GAC inventory, specific throughput, and capacity-based estimated bed life in a structured Excel workflow.
Excel WorkbookAutomatic Isotherm SelectionLinked Design Dashboard
What This Module Helps You Design
Contactor & Carbon Sizing
Estimate contactor count, vessel diameter, GAC bed volume and depth, total vessel height, and required carbon inventory.
Capacity & Engineering Review
Assess EBCT, approach velocity, specific throughput, bed volumes treated, and capacity-based estimated bed life, with design-screening checks.
Calculation Coverage
A linked workflow from contaminant selection and Freundlich isotherm data through GAC contactor sizing, carbon requirement, and preliminary capacity-based operating estimates.
Design Inputs & Isotherm Selection
- Contaminant selection and Freundlich parameters
- Influent and target effluent concentration
- Design flow, GAC bulk density, EBCT, and velocity
- Automatic or manual sizing basis
Fixed-Bed Vessel Sizing
- Number of parallel contactors and flow per unit
- Bed volume, vessel cross-section, and diameter
- GAC bed depth and backwash expansion allowance
- Straight-side and total internal vessel height
Carbon Capacity & Design Review
- Estimated equilibrium adsorption capacity
- Carbon usage rate and total carbon inventory
- Specific throughput and bed volumes treated
- Capacity-based estimated bed life and design checks
Workbook Experience
See the Complete Engineering Workflow
Explore actual Calculation Sheet and Dashboard excerpts before purchasing the workbook.
Actual GAC contactor dashboard excerpt. Values are illustrative, capacity-based estimates and require project-specific verification.
Built-in Design Checks
Review the preliminary hydraulic and vessel criteria alongside the separate adsorption-capacity assumptions.
| Review Item | Workbook Evaluation |
|---|---|
| Empty bed contact time | Screen EBCT against the adopted design range |
| Approach velocity | Evaluate superficial flow through the GAC bed area |
| Bed depth & vessel height | Review bed depth, expansion allowance, and vessel internal dimensions |
| Carbon usage & throughput | Evaluate capacity-based carbon requirement and estimated treated-water volume |
| Adsorption feasibility | Review isotherm-based estimates separately from hydraulic PASS indicators |
Design checks are preliminary. Equilibrium isotherm capacity does not replace breakthrough-curve testing, pilot data, or final media/vessel vendor verification. A hydraulic PASS does not establish adsorption performance.
What's Included
READ ME
Purpose & user instructions
Cover
Project information
Calculation
Contactor sizing & carbon usage
Dashboard
Vessel GA & design summary
Abbreviations
Symbols & units
Isotherm Data
Compound parameters & sizing controls
AIDIA supports preliminary engineering calculations and review. Isotherm-based bed-life estimates require project-specific confirmation; final design remains subject to professional judgement and vendor verification.
Complete Your GAC Contactor Design
Move from contaminant selection and adsorption assumptions to preliminary GAC vessel sizing, carbon inventory, and engineering review in one structured Excel workbook.