Cella™ is a new biofilm technology for sustainable wastewater treatment for municipalities.

Turning wastewater treatment into a renewable resource supply and creating value through responsible and sustainable solutions is possible now. Cella™ is a biofilm technology utilizing the power of nature to provide flexible, compact, and robust wastewater treatment while minimizing the use of fossil resources, maximizing energy efficiency and recovery, without compromising treatment performance.


A sustainable future with Cella™

Cella is a new biofilm technology developed with a strong emphasis on sustainability, reuse and ensuring clean water for future generations. Designed to maximize energy efficiency and recovery in the form of biogas from excess biomass, Cella promotes a positive energy balance in treatment plants. Furthermore, this technology facilitates the integration of biological phosphorus removal into the treatment process, reducing reliance on chemicals for phosphate precipitation.

How does Cella™ work?
Cella features the Moving Bed Biofilm Reactor (MBBR) technology while incorporating additional benefits, including a new biobased support material for biofilm growth, no limitation in biofilm surface with high treatment rates, and an all-in-one solution for the treatment of carbon, nitrogen and phosphorus.  The exposed surface facilitates the efficient transfer of contaminants and products into and out of the biofilm, resulting in a highly effective process that can handle high loading rates within a small footprint.
Cella combines the flexibility of the activated sludge process with the compactness and stability of biofilm processes – in one and the same tank.

Features and benefits

Sustainable and efficient: a valuable resource for municipalities on the path towards decarbonization. 

Minimizes the use of fossil-based resources: permits for the integration of circular economy principles in biofilm-based biotreatment. 

Maximize energy efficiency and recovery: biogas from excess biomass, promoting a positive energy balance in treatment plants. 

Facilitate the integration of biological phosphorus removal: reducing reliance on chemicals for phosphate precipitation.

Flexible, simple and robust operation: support material provides a large exposed surface area for biofilm growth due to its small size within the millimeter range, leading to effortless transfer of contaminants and products into and out of the biofilm

Fast startup and biofilm establishment: unique features of the support material  

All-in-one solution: simultaneous biological treatment of carbon, nitrogen, and phosphorus

Efficient process: handles high loading rates in a small footprint, meeting stringent discharge requirements



AnoxKaldnes’ technologies are found in more than 1,200 treatment plants around the world. Contact us for references related to your specific needs.

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