Updated on August 29, 2020


Created on October 2, 2018

AnoxKaldnes Moving Bed Biofilm Reactor

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The AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) is a wastewater treatment technology composed of an aeration tank are plastic pieces on which biofilm can grow.

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Product Description

The AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) is a wastewater treatment technology that uses biofilm carriers to optimize bacteria cultures for use in industrial and municipal applications. The plastic carriers are mixed with the wastewater by an aeration system, and the treated water flows out of the tank through a sieve.  The compact system removes BOD, ammonia, and nitrogen, and the design of systems in flexible based on application.

Distributors / Implementing Organizations

Manufacturing/Building Method

The AnoxKaldnes MBBR is built to bespoke configurations and customised to meet the sites specific requirements.

Intellectural Property Type

Patent Protected

User Provision Model

MBBRs are designed with and then purchased though the manufacturer, to ensure that treatment is optimal for specific applications.

Distributions to Date Status

More than 600 MBBR systems have been implemented worldwide.

Flow rate (L/min)

100 – 800 L/min

Power Supply Type


Technology type

MBBR, aeration, biofilm

BOD Removal Efficiency

COD removal efficiency

NH4-N Removal Efficiency

TSS removal efficiency

Total Phosphorus Removal Efficiency

Fecal Coliform Removal Efficiency

Design Specifications

The AnoxKaldnes MBBR system is designed as a tank with an inlet for wastewater and an outlet, covered by a sieve, for the treated wastewater. Small plastic biofilm carriers are mixed in the tank through aeration from the bottom of the tank. These carriers are designed to provide the optimal surface area for biofilm to grow on, effectively treating the wastewater. This video further explains how the system works.

Technical Support

Technical support is provided by the manufacturer through various water services and maintenance support packages. These packages include water plant maintenance and chemicals for water treatment. In addition all of the packages include remote technical support.

Replacement Components

Individual components are available from the manufacturer for replacement through the technical support plans.


The AnoxKaldnes MBBR has has an observed operational lifespan of over 15 years with no reduction in performance.

Manufacturer Specified Performance Parameters

The manufacturer specifies performance targets related to small plant footprints, accommodating high loading, and creating optimal bacteria culture conditions.

Vetted Performance Status

The product has been tested by a range of academic institutions including Lund University, Aarhus UniversityThe University of Auckland, and the University of Ottawa related to design, functionality, and impact of temperature.


The AnoxKaldnes MBBR must be operated safely and correctly to ensure that users are not harmed by either the growing bacteria or the untreated wastewater.

Complementary Technical Systems

The system can be coupled with settlers, clarifiers, or disk filters which enable downstream separation of sludge from treated water.

Academic Research and References

McQuarrie, J., Boltz, J., 2011, “Moving Bed Biofilm Reactor Technology: Process Applications, Design, and Performance,” Water Environment Research, 83, pp. 560-75.

Hoang, V. et. al., 2014, “Nitrifying moving bed biofilm reactor (MBBR) biofilm and biomass response to long term exposure to 1C,” Water Research, 49, pp. 215-224.

Biswas, K., Taylor, M., Turner, S., 2013, “Successional development of biofilms in moving bed biofilm reactor (MBBR) systems treating municipal wastewater,” Applied Microbiology and Biotechnology, 98, pp. 1429-1440.

Casas, M. et. al., 2015, “Biodegradation of pharmaceuticals in hospital wastewater by staged Moving Bed Biofilm Reactors (MBBR),” Water Research, 83, pp. 293-302.

Hoang, V., et al., 2014, “An Investigation of Moving Bed Biofilm Reactor Nitrification during Long-Term Exposure to Cold Temperatures,” Water Environment Research, 86, pp. 36-42.

Piculell, M., 2016, “New dimensions of moving bed biofilm carriers influence of biofilm thickness and control possibilities,” Ph.D dissertation, Lund University, Lund, Sweden.

Compliance with regulations

Veolia Water Technologies builds systems tailored to meet site objectives and to comply with regulations for applications such as water reuse, wastewater treatment and sewage treatment.

Other Information

MBBR systems can be used in a variety of applications from wasterwater management to environmental protection. Here are the case studies related to two treatment projects: Marine Harvest Dalsford Aquacria-Piscicolas Turbot Fish Farm

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