MBBR (Moving Bed Biofilm Reactor) Bio Filter Media is a specially designed plastic carrier used in biological wastewater treatment systems to support the growth of beneficial microorganisms (biofilm). These media enhance the biological degradation of organic matter by providing a large protected surface area for bacteria to colonize, improving treatment efficiency and reducing system size.
Key Features
High specific surface area (350–1200 m²/m³ depending on type)
Durable material – typically made from virgin HDPE (High-Density Polyethylene)
Lightweight – allows for good suspension and mixing
UV and chemical resistant
Non-clogging and low maintenance
Suitable for aerobic, anaerobic, and anoxic processes
How It Works
In an MBBR system, the bio filter media are suspended in an aerated tank where they continuously move with water flow or air agitation. Microorganisms grow on the surface of the media, forming a biofilm that consumes organic pollutants, nitrogen compounds, and other contaminants in the wastewater.
The constant motion ensures:
Good contact between water and biofilm
Self-cleaning action (excess biofilm is sloughed off)
High treatment capacity in a compact system
Specifications
Property
Value
Material
Virgin HDPE
Shape
Cylindrical or wheel-shaped with internal fins
Diameter
10 – 25 mm (varies by type)
Surface area
350 – 1200 m²/m³
Density
~0.93 – 0.97 g/cm³
Void ratio
>85%
Color
White, black, or custom (usually for identification)
Advantages of MBBR Media
Increases biological treatment efficiency
Reduces footprint of treatment plants
Handles shock loads effectively
No need for backwashing
Energy efficient and scalable
Applications
Municipal wastewater treatment
Industrial effluent treatment
Aquaculture systems
Sewage treatment plants (STPs)
Effluent treatment plants (ETPs)
Upgrading existing activated sludge systems
Moving bed bioreactors (MBBR) and Integrated Fixed-film Activated Sludge (IFAS) systems