Advantages of MBBR Technology in Municipal Wastewater Treatment
By: Kate Nana
Post Date: August 19th, 2025
Email:Kate@aquasust.com
Post Tags: MBBR, Secondary Wastewater Treatment, MBBR System，Moving Bed Biofilm Reactor (MBBR)
The Moving Bed Biofilm Reactor (MBBR) process offers significant advantages for municipal wastewater treatment applications:
1. Compact Footprint
With a typical carrier filling rate of 15%, MBBR systems require only 20-40% of the tank volume compared to conventional biological reactors (anoxic, anaerobic, and aerobic) under equivalent pollution loading conditions.
2. Ideal for Plant Expansion
Most wastewater treatment plants have limited reserved space. MBBR technology enables capacity expansion while maintaining original tank dimensions and meeting designed effluent standards, even when influent quality and quantity exceed original design parameters.
3. Effective for Plant Upgrades
The MBBR process demonstrates exceptional design flexibility and operational simplicity, adapting to various tank configurations. Its strong compatibility allows integration with most existing treatment processes including A²O, AO, SBR, CASS, and oxidation ditch systems, facilitating upgrades to meet Class 1A or 1B discharge standards.
4. Robust Process Performance
Combining the advantages of biofilm and activated sludge processes, MBBR offers:
- High resistance to shock loads
- Long sludge age with minimal excess sludge production
- Complete avoidance of sludge bulking
- Operational flexibility comparable to activated sludge
- Superior temperature tolerance (significantly more stable than activated sludge systems)
- Strong resistance to variations in wastewater composition and toxicity
5. Enhanced Nitrogen Removal
The biofilm carriers create simultaneous aerobic, anoxic and anaerobic zones within a single reactor, enabling efficient nitrification and denitrification for excellent ammonia nitrogen removal.
6. High Biomass Concentration
MBBR systems maintain sludge concentrations 5-10 times higher than conventional activated sludge processes, reaching 30-40 g/L. This results in:
- Improved organic removal efficiency
- Exceptional load variation tolerance
The combination of these advantages makes MBBR particularly suitable for space-constrained municipal treatment applications requiring reliable performance under variable conditions.
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