How does the SMALLBOSS MBBR media carriers work? In an aeration tank, the tiny MBBR pieces disperse throughout the wastewater, and their tremendous surface area provides a hospitable environment for microorganism growth. The biofilm that grows on the media then decomposes the waste in the tank.

Diffusers send oxygen into the tank to promote continuous microorganism growth, and a mesh sieve in the tank helps keep the media carriers from flowing away with the wastewater. MBBR media carriers have a density similar to that of water, so they mix well with the wastewater to promote consistent waste digestion.

Using MBBR media is particularly advantageous because the tiny pieces take up minimal space, are easy to maintain and digest waste efficiently. The microorganisms on the media can eat.

To select the correct moving bio bed media for your wastewater applications, you’ll want to consider a few different factors.

Media Surface Area

Adequate surface area is necessary to facilitate microorganism growth. Media surface area sometimes correlates with biodegradation rates, but other factors can affect biodegradation as well, so the correlation is not a perfect one.

In general, a wastewater treatment plant should maximize media surface area while still making sure the media carriers meet the facility’s needs in their other characteristics. MBBR media carriers in the shape of spoked wheels, for example, offer a tremendous surface area for their size to help a plant meet its waste digestion needs.

Performance and Required Biodegradation Rates

Optimal performance and biodegradation rates are critical for helping a plant move wastewater through secondary treatment quickly and efficiently. Performance and biodegradation rates often rise with increased media surface area. They also depend on factors like influent and effluent characteristics, fluctuations in the wastewater’s pollutant concentrations, the tank’s minimum temperature, and the biological metabolisms of the tank’s microorganisms.

In general, to optimize performance and biodegradation rates, plants should seek out MBBR media carriers of the correct shape and material quality to provide efficient, effective waste digestion.

Design and Shape

As we’ve discussed above, the design and shape of MBBR bio-media carriers help determine waste breakdown efficiency and effectiveness. Media carriers with intricate, cut-out shapes tend to offer more surface area per media weight to enhance bacterial growth and promote biosolid breakdown.

The MBBR media carriers’ design should also give them a density close to the wastewater’s density. The right density promotes even dispersal throughout the tank and ensures thorough waste digestion. Different materials offer different densities — the more economical re-granulates, for instance, may have substantial fluctuations in density between carrier pieces, whereas polyethylene may provide more consistency.

Wear Resistance

The wear-resistant characteristics of MBBR media carriers determine how they hold up to the demands of wastewater treatment. More resistant media carriers last longer and require fewer changes over time. Some MBBR media carriers, such as sponge-types, have limited resistance to abrasion, so they wear out more easily. Chip-type carriers tend to offer better resistance and a longer life span. Tube-shaped versions may suffer wear because the insides of the tubes tend to accumulate biomatter, which then dies and inhibits active waste digestion.

Maintenance

MBBR media systems require relatively little maintenance. Some materials like polyethylene last longer than others and minimize maintenance needs, so facility managers will want to look into different materials and determine what life span the plant requires for its media.

Features

●Strong and efficient biological process – high removal rates

●Up to 50% smaller footprint

●Less air requirement

●COD/BOD/Nitrogen removal.

●Usage of fine or coarse bubbles diffusers for aeration

●No need to recycle sludge back to the reactor

●Carbon recovery is part of the process

●High removal rates compared to alternative systems such as activated sludge and SBR

●Superior self-cleaning of the carriers and screens

Benefits

●Low operational expenses – energy savings up to 30% compared to other MBBR processes

●Simple operation

●Can be used to retrofit existing plants in existing tanks & reactors

●Minimal biological clogging on the carriers and media screens

●Fast recovery

SMALLBOSS™ Biofilm Media Carriers are supplied in 1 m³ & 1.5m³ super sacks and shipped on pallets for ease of transportation. The carriers can be loaded into basins and tanks via a fork truck or a crane. 

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