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 28 Sep. 2022 



 

 

 

## Four ways to save money while removing nitrogen with Hybas™



 

 

 



Without nitrogen, there would be no life, but too much of it in wastewater is a danger to both human health and our whole ecosystem. Here are four ways AnoxKaldnes Hybas™ provides a cost-effective way to remove nitrogen and improve the capacity of your existing nitrogen-removal process.

#### Energy efficient

AnoxKaldnes Hybas™ is equipped with carriers that improve oxygen transfer into the biofilm. The Hubgrade online control system optimizes performance and prevents over-aeration. Being an activated sludge, only a smaller part of sludge volumes utilizes carriers. That means the same energy efficiency numbers apply to all other volumes. Biogas potential from sludge is approximately 30% higher than the biogas yield obtained from an activated sludge designed for extended nitrogen removal without carriers.

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Higher biomass activity through shorter sludge age

The denitrification rate in Hybas™ can be several times higher than rates found in activated sludge processes with long sludge age. The anoxic fraction of the total volume is also higher, keeping denitrifiers working for a larger percentage of the time.

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Better removal of micropollutants

By combining activated sludge and biofilm in Hybas™ you can expect a 20% improvement in micropollutant removal. Combining Hybas with post-treatment for further micropollutant removal can decrease operating costs downstream compared to treatment after activated sludge only.

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Chemical-free phosphorus removal 

You can apply all different types of Enhanced Biological Phosphorus Removal (EBPR) in AS-systems in Hybas™.



 

 

 



 

 

   ![Marquette-lez-Lille, France, WWTP](/sites/g/files/dvc4056/files/styles/media/public/image/2022/08/HYBAS-Marquette-lez-Lille%2C%20France%201.png.webp?itok=Ywc2WO-C)   





 

 





 [   ![Hybas/IFAS](/sites/g/files/dvc4056/files/styles/content_push_teaser/public/image/2020/09/Push_Hybas.jpg.webp?itok=OJFlf-K2)   



 ](/en/technologies/hybas/anoxkaldnes-hybas-qa "Hybas™ - Questions and Answers") 

  

 [Hybas™ - Questions and Answers](/en/technologies/hybas/anoxkaldnes-hybas-qa "Hybas™ - Questions and Answers") 

 Hybas™ is a solution for nitrogen removal based on Integrated Fixed Film Activated sludge (IFAS) technology, where the best properties of MBBR and Activated Sludge (AS) are merged into one compact, energy-efficient system. 

 

 

    

 

 

 

 

 

 [Read more](/en/technologies/hybas/anoxkaldnes-hybas-qa "Read more") 





 

 

 



 

 

 

 





**Find out more** about AnoxKaldnes Hybas™

[Read the Hybas™ Questions & Answers here](/en/technologies/hybas/anoxkaldnes-hybas-qa "AnoxKaldnes Hybas™ - Q&A")