AnoxKaldnes - MBBR - Biofilm For Wastewater Treatment

In the AnoxKaldnes MBBR biofilm technology, the biofilm grows protected within engineered plastic carriers, which are carefully designed with high internal surface area. These biofilm carriers are suspended and thoroughly mixed throughout the water phase. With this technology, it is possible to handle extremely high loading conditions without any problems of clogging, and treat industrial and municipal wastewater within a relatively small footprint.

The AnoxKaldnes MBBR biofilm technology is efficient, compact and easy to operate. It can be an excellent solution as a stand-alone process, a Moving Bed biofilm reactor, or it can be used to specifically enhance or upgrade treatment potential of activated sludge processes.

The MBBR can be used as sole biological treatment or in combination with other technologies. The AnoxKaldnes pure MBBR could be designed as a single step, or a multi-step process. It works well together with chemical treatment. When operated at low organic loading and as a multi-step process, a unique microflora is developed in each step and this will significantly increase the possibility for removal of both easily degradable organic matter and more hard-to-degrade organic matter in the different steps.

The AnoxKaldnes MBBR biofilm technology can be used as a preliminary treatment stage as in BAS biological process, as a combined IFAS hybrid stage in the Hybas combination process, treaten reject water from anaerobic digestion in an ANITATM Mox process and as a final polishing step in the LagoonGuard biofilm process.

The AnoxKaldnes MBBR biofilm technology is based on specially designed plastic biofilm carriers or biocarriers that are suspended and in continuous movement within a tank or reactor of specified volume. The design of associated aerators, grids, sieves, spray nozzles and other integral parts to the reactor is also of great importance in making up the system as a whole, which is what AnoxKaldnes is marketing.

The industrial and municipal wastewater is led to the MBBR treatment reactor where biofilm, growing within the internal structures of the biocarriers, degrade the pollutants.The biocarrier design is critical due to requirements for good mass transfer of substrate and oxygen to the microorganisms and there is a continuous R&D in the area of the AnoxKaldnes MBBR biofilm technology. Excess biofilm sloughs off the biocarrier in a natural way.

An aeration grid located at the bottom of the reactor supplies oxygen to the biofilm along with the mixing energy required to keep the biocarriers suspended and completely mix within the reactor. Treated water flows from reactor through a grid or a sieve, which retains the biocarriers in the reactor. Depending on the wastewater, the reactors may be equipped with special spray nozzles that prevent excessive foam formation.

Patent protected technology
The AnoxKaldnes MBBR biofilm technology is protected by several patents.

BioCarriers
AnoxKaldnes has developed a complete range of biocarriers to suite different processes and wastewaters. Take contact with us to find the most suitable biocarrier for your application.