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

 

 

 

#### Veolia Water Technologies AnoxKaldnes has launched a new generation of biofilm carriers for moving bed biofilm reactors: AnoxKaldnes Z-MBBR. The new carrier is the result of two decades of development work.



    [CONTACT AN EXPERT](https://www.veoliawatertechnologies.com/en/contact)

 



 

 



 [Overview](#1) [Product range](#2) 

 

 

## Overview

 

 

 

**A different approach to carrier development**   
Traditionally, carrier development has aimed for larger protected surface area, but has allowed for a more or less uncontrolled growth of the biofilm.  
  
This lack of control of biofilm thickness is a major uncertainty for process design based on carrier surface area, and also limits the applications for which the MBBR can be a competitive solution.

**Z-MBBR - The new dimension**  
The new carrier design is covered with a grid of defined height, allowing the biofilm to grow on the outside of the carrier in a protected environment.  
  
Due to scouring from other carriers, the biofilm cannot grow higher than the grid height, and so biofilm thickness is controlled.

**Applications of Z-MBBR**  
As all process limitations related to uncontrolled growth of biofilm and clogging of carriers are eliminated with the Z-carriers, they are especially useful in applications where the biofilm tends to grow thick, such as nitrification at higher organic loads.  
  
Z-carriers with different biofilm thicknesses have been evaluated for different applications, with very interesting results. As for example, extremely thin biofilms have shown to open for a new, more efficient application of mainstream ANITA Mox.

**Benefits of biofilm control**

- By precisely controlling the thickness of the biofilm it is possible to develop an environment that will favor selected bacteria.
- It eliminates variations in performance due to changes in biofilm thickness and removes limitations associated with clogging of the carriers.
- Z-MBBR delivers all the conventional advantages of MBBR; small footprint, stability, low maintenance and robust treatment while offering the ability to customize unique solutions.



 

 

 



 

 

 

## Product range

 

 

 

 

 

 



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### AnoxKaldnes™ LagoonGuard™

Aerated lagoons are used extensively for the treatment of both municipal and industrial wastewater.

 

 

Aerobic Wastewater Treatment

 

 

 

 ](/en/technologies/anoxkaldnes-lagoonguard) 



 

 [   ![](/sites/g/files/dvc3601/files/styles/vwt_product_content_push/public/image/2019/04/34_MBBR-bassins.jpg.webp?itok=doVBwibl)   





 

### AnoxKaldnes BAS™

The BAS™ biological wastewater treatment process is the optimally designed combination of MBBR and activated sludge processes and is a leading edge process used for treatment of industrial and municipal wastewater.

 

 

Aerobic Wastewater Treatment

 

 

 

 ](/en/technologies/anoxkaldnes-bas) 



 

 [   ![](/sites/g/files/dvc3601/files/styles/vwt_product_content_push/public/image/2022/12/MBBR-Push.jpg.webp?itok=FjMPg_xL)   





 

### AnoxKaldnesⓇ MBBR

Moving bed biofilm reactor for cost-efficient removal of pollutants from municipal and industrial wastewater. High efficiency for BOD, ammonia and nitrogen removal.

 

 

Aerobic Wastewater Treatment

 

 

 

 ](/en/solutions/technologies/anoxkaldnes-mbbr)