Appearance
Process Unit Models
Comprehensive documentation for all wastewater treatment process unit models in ErgoPlanner.
Categories
Preliminary Treatment
- Screens - Bar screens and fine screens
- Grit Removal - Grit chambers and classifiers
- Flow Measurement - Weirs and flumes
Primary Treatment
- Primary Clarifier - Gravity settling
- Chemically Enhanced Primary Treatment - Coagulation/flocculation
Secondary Treatment - Suspended Growth
- Activated Sludge - CSTR reactors
- SBR - Sequencing batch reactors
- MBR - Membrane bioreactors
Secondary Treatment - Attached Growth
- Trickling Filters
- RBC - Rotating biological contactors
- MBBR - Moving bed biofilm reactors
Secondary Clarification
- Secondary Clarifier - Activated sludge settling
Tertiary Treatment
- Filtration - Sand, dual-media, membrane
- Disinfection - UV, chlorine, ozone
- Nutrient Recovery - Struvite, ammonia stripping
Sludge Treatment
- Thickening - Gravity, DAF, centrifuge
- Digestion - Aerobic and anaerobic
- Dewatering - Belt press, centrifuge, filter press
Flow Elements
Model Modes
All process units support two calculation modes:
Basic Mode
- Efficiency-based calculations
- Simple removal percentages
- Quick mass balance estimates
- Suitable for preliminary design
Advanced Mode
- Mechanistic equations
- Kinetic parameters
- Dynamic simulation capable
- Suitable for detailed design and optimization
Documentation Structure
Each process unit documentation includes:
- Overview - Process description and applications
- Theory and Equations - Mathematical models for both modes
- Model Parameters - Complete parameter tables with defaults and ranges
- Design Criteria - Industry standard design parameters
- Worked Examples - Step-by-step calculations
- Assumptions and Limitations - Model constraints
- Troubleshooting - Common issues and solutions
- References - Academic and industry sources
Using This Documentation
- Use the category navigation above to find specific process units
- Each unit page includes both basic and advanced calculation methods
- Worked examples demonstrate practical application
- Parameter tables show default values and typical ranges
- Cross-references link related process units
Contributing
To add or update documentation:
- Use the template in
templates/process-unit-template.md - Ensure equations are mathematically correct
- Include worked examples with verified results
- Add cross-references to related units
- Follow markdown formatting standards