MBBR technology is based on the biofilm principle with an active biofilm growing on small specially designed plastic carriers that are kept suspended in the reactor. The technology utilizes the advantages of both activated sludge and other biofilm systems (e.g. biofilters, biorotors etc.) without being restrained by their disadvantages.

The carriers are designed to provide a large protected surface area for the biofilm and optimal conditions for the bacteria culture when the carriers are suspended in water.

Solutions based on MBBR technology is mainly used in the following applications:

+ For new plants, especially those requiring a small footprint and easy operation, for BOD/COD and nitrogen removal

+ As a high loading system in front of existing biological treatment - roughing reactor

+ To increase the amount of nitrifying bacteria in existing activated sludge system using the WOCK OLIVER carrier in a hybrid plant to meet ammonia limits

+ To implement post-treatment to existing plants for process improvements

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