Moving bed biofilm reactor (MBBR)

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Water is a valuable resource. To ensure its proper conservation, it is mandatory to properly treat wastewater. Our MBBR solution is a factory-assembled, easy-to-install biological oxidation treatment designed for small requirements of up to 500 PE using a single module.  

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Bespoke solutions

Sized according to local requirements 

Factory-assembled components 

Suitable for up to 300 m3/day 

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Compact and discreet

Lightweight HDPE tanks 

Noise and odour free treatment 

Small footprint 

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Peace of mind

Robust and durable solution 

Reduced operating costs  

Suitable for all weather conditions 

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360º support

WWTP design experts 

Systems maintenance team 

More than 25 years of experience 

What is a MBBR?

Plastic media for a MBBR systems

The MBBR system is perfect for treating wastewater from commercial, institutional or industrial buildings where changes in flow rates and organic load concentrations in the discharge are frequent.  

The technology of this biological treatment system uses plastic biofilms media added to the reactor to increase biomass density in the reactor volume. The design is thus more compact and has better and more reliable performance.   

These systems consist of Rewatec high density polyethylene tanks (HDPE) that are easy and quick to install, as the internal blower and electrical components and connections are assembled in the factory.  


Examples of applications 

  • Restaurants 
  • Service stations 
  • Wineries and breweries 
  • Commercial areas 
  • Agrifood plants 
  • Commercial or municipal buildings 
  • Small communities 
MBBR system installation for the wastewater treatment from a residential building

    How does the Rewatec MBBR technology work?

    Automatic screen followed by a primary treatment chamber 

    In typical installations, wastewater first flows into an automatic screen to remove large solids. The effluent then flows into the primary treatment chamber, which allows the separation of liquids and solids. The scum layer and sludge settled at the bottom must be removed regularly.  

    Equalisation chamber (if necessary) 

    After the primary treatment, the liquids continue to be treated and flow into an equalisation chamber, which collects wastewater from the daily peak use periods and then flushes out controlled quantities to the Rewatec MBBR tank. This step could be included in the primary treatment chamber, if the design so allows it.  

    Rewatec MBBR chamber (reactor) 

    Inside the Rewatec MBBR reactor, microorganisms grow in a fine biofilm over a plastic media. These microorganisms consume organic pollutants in the wastewater, resulting in effluents composed of biomass particles and treated wastewater. 

    The specific shape of our plastic medium increases the surface area for the biological microorganisms to attach and grow. This maximises its capacity to treat wastewater and helps reduce the size of the reactor. 

    The reactor is continuously agitated by bubbles from the aeration system that mix with the contents to promote the aerobic digestion of microorganisms. Again, this improves its capacity to remove pollutants from wastewater. 

    Clarification chamber and final discharge 

    Following the treatment in the reactor, wastewater flows into the settling chamber where the liquids are separated from the biomass that may still exist after treatment.  

    Sludge is returned to the primary treatment chamber or to an accumulation tank to be subsequently pumped out. If no further treatment is needed, the effluent can then be flushed to the environment in accordance with local regulations.  

    Maintenance of the system 

    Premier Tech recommends that you follow the maintenance instructions according to the model installed. Protect your investment by performing regular checks to help extend the service life of the system and maintain your warranty. 

    If you need to check the state of your Rewatec MBBR system, please feel free to contact us.  


    We stand by our products 

    For over 25 years we have been developing sustainable, long-lasting products that make a difference for our clients, professional partners and, in particular, our planet.  

    Our experience allows us to offer the most comprehensive warranty in the industry, in an open and honest manner.  

    The warranty of Rewatec’s MBBR models includes*: 

    • 5-year for polyethylene tanks manufactured by Premier Tech.  
    • 2-year for control panels and pumps 
    • 1-year for the blower  
    • Proper functioning and performance of the system, if maintenance is carried out by our team.  
    5 year warranty


    * Provided the equipment is properly installed and maintenance is carried out in accordance with Premier Tech’s guidelines and by certified maintenance teams.  

    Contact us

    Contact our team of experts to find out more about our sustainable solutions that help improve the environment and our planet. Together we will make a difference. 

    Contact us