Models for any soil condition
No project too big or too small
Operating modes adapt to conditions
Fine or coarse bubble aeration
Modular design is easy to expand
Organic and hydraulic load variations
Nitrification or denitrification
Dedicated project managers
Proven maintenance services
What is a sequencing batch reactor?
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.
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.
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