Sequencing batch reactors

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sequencing batch reactor rewatec solutions for any site
Solutions for any site

Pre-assembled and ready-to-use options.  
Models for all soil conditions. 
No project too big or too small.  

sequencing batch reactor rewatec unrivaled versatility
Unrivaled versatility

Operating modes adapt to changing conditions.  
Fine or coarse bubble aeration.  
Easily expands to meet growing needs. 

sequencing batch reactor rewatec custom designs and flexible operation
Flexible operation

Manage organic and hydraulic load variations. 
Phosphorus removal. 
Nitrification or denitrification. 

sequencing batch reactor rewatec premier tech's 360 support
360° support

Managers dedicated to your project.
Commissioning by our experts.
Maintenance to protect your investment.

What is a sequencing batch reactor?

sequencing batch reactor sbr rewatec

A sequencing batch reactor (SBR) is the ideal wastewater treatment solution for commercial and municipal projects striving for high performance with minimal energy consumption.

Designed for flows of up to 100,000 m3 per day, Rewatec SBR systems treat wastewater in optimized batches using tried and tested biological processes that deliver exceptional reliability and efficiency.

If your needs evolve after installation, our modular systems have the versatility to keep pace. They can be easily expanded, and their treatment parameters can be personalized to meet changing regulations in your area. 

Rewatec SBR systems combine treatment and clarification in a single tank, giving you a streamlined design that optimizes your equipment and operating costs. 



  • municipal and industrial treatment plants 
  • leachate treatment for landfills and technical landfills 
  • agri-food processing plants 
  • residential developments 
  • upgrades to faulty systems

How do our SBR systems work?

Primary treatment tank or fine screen

In typical installations, wastewater first flows into a primary treatment tank. This tank allows liquids to separate from solids. Solids that settle on the bottom of the tank are called primary sludge. They are removed from the tank by a septic pumper as often as needed.

In some cases, a fine screen takes the place of the primary treatment tank. It provides a simple barrier that removes solids from wastewater before they can move downstream.

Equalization tank (if needed)

After primary treatment, liquids flow into an equalization tank. This tank collects wastewater from daily peak-use periods and sends measured doses to the Rewatec SBR.

When Rewatec SBR systems are designed specifically for continuous flow, the equalization tank is not needed.

Rewatec SBR 

Inside the Rewatec SBR, intermittent aeration cycles break down solids and provide oxygen to microorganisms that feed on organic wastewater pollutants.

After aeration, remaining solids – including microorganisms – sink to the bottom of the tank. Some remain in the Rewatec SBR to treat the next batch of wastewater. They are known as activated sludge. Remaining solids are extracted and returned to the primary treatment tank or a sludge storage tank.

During periods of very high flow, the system can shift from a batch-flow strategy to a continuous-flow strategy with intermittent discharge. This versatility eliminates the need to overdesign the system to cope with fluctuating flow rates, and it has no effect on treatment performance.

Receiving system and final discharge

As solids settle on the bottom of the Rewatec SBR, treated wastewater forms at the surface. A floating decanter with a solids-exclusion feature drains this wastewater so that it can be safely released into the environment.

Premier Tech’s 360° support

Local expertise is the bedrock of our global team. Together, we have the technical knowledge and industry experience to help you succeed in every phase of your project.


  • engineering support to guarantee the best solution
  • help with technical drawings and diagrams
  • advice for electromechanical equipment
  • control panel design, including electrical diagrams

Construction and installation

  • dedicated project managers
  • fast answers to all questions
  • on-site support to ensure high-quality installations
  • real-time troubleshooting


  • commissioning by a qualified technician 
  • verification of installation success 
  • rapid responses to any areas of concern 


  • full support from our process and mechanical experts 
  • maintenance services from local technicians 
  • remote support available

Where do we offer SBR systems?

We proudly offer Rewatec SBR systems in the following countries:

Available models

No two projects are the same. That is why we offer a range of Rewatec SBR systems, each designed according to your unique wastewater treatment needs and preferences.

Additional options

When regulations call for tighter controls, take advantage of our additional treatment options to maximize the performance of your Rewatec SBR system.

uv desinfection septic system rewatec
UV disinfection

Eliminate wastewater pathogens and safely send effluent into a ditch or watercourse with our reliable and chemical-free UV disinfection solutions. 

Phosphorous removal polyethylene open
Phosphorus removal

Take wastewater treatment to another level and protect the lakes and rivers around your property with our safe and simple phosphorus removal solutions.  

Get in touch

We are here to help. For more information about our products and services, including their availability around the world and in your home country, please contact our team of experts today.

Contact us