Description
Technical Parameters
The MBBR wastewater treatment process occurs within specifically engineered containment units – typically called MBBR reactors, aeration tanks, or biofilm reactor basins. These modular mbbr tanks are designed with three critical components:
Carrier Retention Screens
- Prevent loss of mbbr biofilm carriers while allowing treated effluent flow
- Mesh sizes (3-8mm) optimized for specific mbbr system configurations
Aeration/Mixing Systems
- Fine bubble diffusers for aerobic MBBR (DO maintained at 2-4 mg/L)
- Submersible mixers in anaerobic MBBR applications
Multi-Stage Configuration
- Primary basin for BOD removal (HRT 4-6 hours)
- Secondary mbbr bioreactor for nitrification (HRT 6-8 hours)
- Tertiary polishing tank for final effluent standards
Design Considerations for MBBR Basins:
✔️ Hydraulic Retention Time: 4-12 hours based on mbbr wastewater load (150-2,000 mg/L BOD)
✔️ Carrier Fill Ratio: 30-70% of tank volume for optimal moving bed biofilm reactor performance
✔️ Tank Geometry: Circular (diameter <8m) or rectangular (L:W ratio 2:1) designs for industrial mbbr system for wastewater treatment
For large-scale STP MBBR plants, cascading reactors achieve:
- 95% COD reduction through sequential mbbr process stages
- 40% space savings compared to conventional mixed bed bioreactor layouts
