Veolia introduces Hybas Fusion™ wastewater system

Veolia Water Technologies UK (Veolia) is pleased to announce the launch of Hybas Fusion™, its new biological treatment solution for wastewater, for the municipal and industrial markets, including: food and beverage, pulp and paper, oil, gas and petrochemical. This modular, flexible product is an adaptation to the AnoxKaldnes™ pioneering Hybas™ process which integrates biofilm technology and activated sludge in the same tank, to efficiently reduce both organic material and nitrogen. AnoxKaldnes is a subsidiary of Veolia Water Technologies and provides turnkey project capabilities with the complete suite of water treatment products and engineering solutions.

Hybas Fusion™ is fabricated off-site and provides a cost-effective means of upgrading an existing activated sludge plant to increase nitrogen removal and increase plant performance. The containerised system reflects the concept of Hybas by adding the moving bed biofilm reactor (MBBR) carriers to part of the aerated activated sludge volume, increasing the nitrification capacity within the existing volume. Typically applied to existing systems, the carriers allow for increased biological capacity by providing a space for the nitrifying bacterial to grow.

The prefabricated Hybas Fusion™ containers can be easily retrofitted to an existing activated sludge plant, reducing the costs and risk of downtime associated with a conventional installation. This solution can be used where:

  • Plants cannot be taken off line for significant periods of time for construction or structural modifications
  • The geometry of the reactors do not fit naturally into a conventional Hybas configuration
  • The construction time and costs are critically important.


The Hybas Fusion™ solution makes it easier to implement further expansion to meet current and future demands, with a negligible impact on the plant’s footprint.

Veolia remain the market leader in MBBR technology with more than 900 references Worldwide.  This unique development allows Veolia to offer a well-proven technology to locations where restrictions previously limited the application. 

Visit  for more information.


Veolia group is the global leader in optimized resource management. With over 163 000 employees worldwide, the Group designs and provides water, waste and energy management solutions that contribute to the sustainable development of communities and industries. Through its three complementary business activities, Veolia helps to develop access to resources, preserve available resources, and to replenish them.

In 2016, the Veolia group supplied 100 million people with drinking water and 61 million people with wastewater service, produced 54 million megawatt hours of energy and converted 30 million metric tons of waste into new materials and energy. Veolia Environment (listed on Paris Euronext: VIE) recorded consolidated revenue of €24.39 billion in 2016.