MBBR/FMR
The MBBR system consists of an aeration tank with special plastic carriers (MBBR Media) that provide a surface where a biofilm (Aerobic Bacteria) can grow. The carriers are made of a material with a density close to the density of water (1 g/cm3). An example is high-density polyethene (HDPE) which has a density close to 0.95 g/cm3. The carriers will be mixed in the tank by the aeration system and thus will have good contact between the substrate in the influent wastewater and the biomass on the carriers. To prevent the plastic carriers from escaping the aeration it is necessary to have a sieve on the outlet of the tank. MBBR processes in general require less space than the activated sludge processes because the biomass is more concentrated, and the efficiency of the system is less dependent on the final sludge separation.
Some advantages are:
- Higher effective Sludge Retention Time (SRT) is favourable for nitrification.
- Responds to load fluctuations without operator intervention.
- Lower sludge production.
- Less area required.
- Resilient to toxic shock.
- Easy to expand capacity in future.
- Easy to operate and maintain.
Introduction:
Fluidized Media Reactor (FMR) system is a “SINGLE TANK DESIGN UNIT” consisting of:
- FMR aeration tank with floating media.
- Lamella Settler.
- Chlorine Contact Tank.
Features of FMR Media
- High Surface Area.
- High physical & chemical resistance.
- Low Annual Losses (3-5%) in the case of foam media.
- Good biomass retention capability.
- Durable anticorrosive Special type paint used for internal and external tank surface.
FMR Advantages
- Significant reduction in space requirement due to its single tank design and compactness.
- Reduced power due to the elimination of sludge recirculation.
- No moving mechanical parts, less maintenance.
- Increased SRT and hence well-nitrified effluent and low sludge volumes.
- Easy up-gradation and extension of existing wastewater treatment plants.
Features
- Single tank design.
- 1/3 space of conventional sewage treatment plant.
- Uses high porosity moving media for bacteria to grow.
- Useful for modification/capacity extension of existing sewage treatment plant.
Advantages
- Minimum land usage.
- Minimum power & chemical requirement.
- Low operating cost.
Applications
INDION FMR delivers treated water to meet local discharge norms and can be used as a decentralised compact sewage treatment plant for housing complexes, hotels, commercial complexes, industries and rural communities. The treated water can be used for gardening, toilet flushing and other low-end applications.