Sequencing batch reactors

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

Pre-assembled options

Models for any soil condition

No project too big or too small

sequencing batch reactor rewatec unrivaled versatility
Unrivaled versatility

Operating modes adapt to conditions

Fine or coarse bubble aeration

Modular design is easy to expand

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Flexible operation

Organic and hydraulic load variations

Phosphorus removal

Nitrification or denitrification

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

Dedicated project managers

Expert commissioning

Proven maintenance services

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 25 mgd, 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. 

Where are our SBR systems used?

Rewatec SBR systems are most often solutions for:

  • 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

SBR brochures and guides





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.

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UV disinfection

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

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Phosphorus removal

Make phosphorus removal from wastewater safe and simple with our technology, specially designed to protect the environment near your business or community.

Talk with an expert

Contact our expert in your area for more information about the Rewatec SBR and additional treatment options that are right for you.

Talk with an expert