A MBBR is a specific implementation of an Aerobic digestion reactor.
It consists of plastic modules or carriers, typically made in PE, freely floating within the aerated reactor, providing a growing support for the bacterial colonization. Growing on support enables the bacteria to develop “shielding” strategies which render the entire reactor less susceptible to shock load or temporary contamination, the outer layers protecting the inner ones. Compared to traditional activated sludge technology, reactors can be smaller and consequently reduce plant footprint.
Additionally, a MBBR does not require the entire COD to be digested for efficient operations and produce good sludge quality which makes it particularly adapted as a pre-treatment prior to sewer discharge for the food and beverage industry. Traditional extensive secondary clarifier is replaced by a smaller DAF unit.
