[     Product listing ](/en/solutions/technologies "  Product listing")

 

 

 

## eXeno™ removes drug residuals and other complex compounds from wastewater using an effective, economical and environmentally friendly MBBR technology.



 

 

 

#### Find out how we can help you:



[Contact an expert](https://www.veoliawatertechnologies.com/en/contact)

 



 

 



 [Overview](#1) [Applications](#2) [Services](#3) [Product range and resources](#4) [Contact](#5) 

 

 

## Overview

 

 

 

## Micropollutants – an environmental & health issue

**Micropollutants are difficult to degrade compounds in municipal or industrial wastewater stemming from pharmaceuticals, x-ray contrast agents, cosmetics, household chemicals, biocides, pesticides, and industrial chemicals.**

Even at low concentrations (ng-µg/l) these residues **can be toxic** for aquatic organisms. They also pose risks for our water supply, for example **spreading antibiotic resistant** genes into the environment. Due to their persistent nature these residues accumulate over time if not properly treated.

Conventional wastewater treatment plants are not designed to specifically remove micropollutants from wastewater. Additional treatment is required which typically uses strong oxidising agents such as ozone or adsorption through activated carbon. But there is a more sustainable way to tackle this challenge.

## Intelligent bacteria to remove micropollutants

Our patented eXeno™ technology uses **specialised microorganisms to biologically degrade micropollutants** with **less or no chemical dosing** and low energy consumption.



 

 

 





 

 

 



   ![](/sites/g/files/dvc3601/files/styles/crop_freeform/public/image/2020/02/eXeno%E2%84%A2-illustration-New.jpg.webp?itok=Qohayu01)   





 

 

 



 

 

 





 

 

## eXeno™ benefits

- **Effective**  
     High removal (50-80%) of difficult degradable pharmaceuticals
- **Economical**  
     Reduced energy and chemical consumption using more bacteria and less ozone and/or activated carbon
- **Environmentally friendly**  
     Avoiding the release of by-products
- **Proven**  
     30+ years of experience with >25 references in the pharmaceutical industry and two projects in the emerging municipal market



 

 

 



 

 

 

 





### The eXeno™ process: biological treatment of pharmaceuticals & co.

eXeno™ is an MBBR technology that typically consists of **multiple bioreactors in series**. Each reactor contains a moving bed of **specialised bacteria** growing on plastic carriers that target the wide variety of complex compounds. In the first stages, more easily degradable compounds are removed while the more difficult compounds are removed in the succeeding reactors.



 

 

 



   ![eXeno micropollutant removal process](/sites/g/files/dvc3601/files/styles/crop_freeform/public/image/2022/07/exeno-micropollutant-removal-process.JPG.webp?itok=HDJrMKrk)   





 

 

 



 

 

 





MBBR technology enables the development of biomass with significantly longer sludge retention times compared to conventional systems. This encourages the development of slower growing organisms capable of removing difficult pharmaceuticals and other micopollutants.

eXeno™ solutions range **from complete treatment including carbon and nitrogen removal** of pharmaceutical/industrial wastewater and hospital wastewater **to tertiary solutions** for municipal applications.

Can eXeno™ solve your challenges?

[Contact an expert](https://www.veoliawatertechnologies.com/en/contact)

 



 

 

 



 

 

 

## Applications

 

 

 

eXeno™ is a proven micropollutants solutions for wastewater streams in many sectors:

- [Pharmaceutical](/en/core-markets/pharmaceutical-cosmetics "pharmaceutical water treatment") & industrial production
- [Hospitals](/en/core-markets/healthcare "Water for healthcare applications")
- [Municipal treatment plants](/en/core-markets/municipal-archived "municipal water and wastewater solutions")



 

 

 



 [   ![](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2023/04/Municipal-wastewater.jpg.webp?itok=Kq3O3Wjb)   ](/en/applications/municipal-wastewater "Municipal wastewater treatment") 

  

 [Municipal wastewater treatment](/en/applications/municipal-wastewater "Municipal wastewater treatment") 

 Optimized management of effluents and wastewater. 

 

 

    

 

 

 

 

 

 [Read more](/en/applications/municipal-wastewater "Municipal wastewater treatment") 





 

 



 

 [   ![Two workers wearing helmets, masks and gloves in a wastewater treatment plant. © Médiathèque VEOLIA - Jérôme Sevrette / ANDIA](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2022/05/VEOLIA_StJeanLaPoterie_JeromeSevrette_Andia_52.jpg.webp?itok=HYuWBupL)   ](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") 

  

 [Industrial wastewater treatment](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") 

 Technologies, services and process expertise to meet environmental requirements, remove contaminants and transform wastewater into a resource. 

 

 

    

 

 

 

 

 

 [Read more](/en/applications/industrial-wastewater-treatment "Industrial wastewater treatment") 





 

 



 

 

 





 

 

 

## Services

 

 

 

 

 

 



 [   ![Service man controlling valves](/sites/g/files/dvc3601/files/styles/content_push_teaser/public/image/2019/06/Service.jpg.webp?itok=E5-W4Usp)   ](/en/services/installed-base-services "Installed Base Services") 

  

 [Installed Base Services](/en/services/installed-base-services "Installed Base Services") 

 Providing best-in-class water treatment services tailored to your exact needs to optimize the operational performance of your facility. 

 

 

    

 

 

 

 

 

 [LEARN MORE](/en/services/installed-base-services) 





 

 



 

 

 





 

 

 

## Product range and resources

 

 

 

  Product range

   

 

 



 

 

 

 

 

  Resources

   

 

 



 

 [PDF

  eXeno™ Biological Micropollutant Removal - Brochure  (3.66 MB)  

    ](/sites/g/files/dvc3601/files/document/2022/07/eXeno-micropollutant-removal-brochure.pdf) 

 



 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

## Contact