Sequencing batch reactors (SBRs)

SBR solutions for residential projects

The Rewatec Solido SMART is the ideal SBR system for residential wastewater treatment projects. It is CE-marked and fully compliant with European Standard EN 12566-3.

Designed for projects serving up to 25 PE, the system uses activated sludge processes and performs all treatment in a single chamber.

Advantages:

• pre-fabricated
• quality controlled
• easy to install
• low maintenance
• minimal visual impact
   

How does the Rewatec Solido SMART work?

The Rewatec Solido SMART is different than traditional systems for homes and cottages. Wastewater enters the treatment tank directly, so there is no need to add a septic tank. This design reduces costs and simplifies installation.

The system operates through cycles of filling, treating, and releasing effluent using a low-load activated sludge process in a single reactor.

There are two 12-hour cycles per day, each consisting of three phases: aeration, clarification, and discharge. Cycles occur sequentially through predefined timings on the system's control panel.
 

Filling and aeration

Aeration is achieved through a low-energy blower that injects air via fine-bubble diffusers. This promotes biological treatment by allowing microorganisms to thrive.
 

Clarification

Solids, including microorganisms, settle to the bottom of the tank during this phase.
 

Discharge

Treated effluent is discharged using a patented airlift system.

Some solids remain in the tank as activated sludge, which is crucial for treating the next batch of wastewater. Over time, excess sludge builds up and must be removed according to the guidelines provided in our user manual.
 

Rewatec SBR treatment results

Our SBR technologies fully comply with Directive 91/271/EEC of the European Council (May 21, 1991).

Our systems remove 92% to 95% of organic matter from urban wastewater. Effluent leaving our treatment plants comply with the following limits:

• COD < 125 mg/L
• BOD₅ < 25 mg/L
• TSS < 35 mg/L
• TN < 15 mg/L (if the system has a denitrification module)

Rewatec SBR system maintenance

At Premier Tech, we help you maintain your Rewatec SBR system for optimal efficiency and reliability. By following our model-specific guidelines, you can protect your investment, uphold your warranty, and contribute to a healthier environment. Trust us to keep your wastewater treatment system in peak condition.
 

Get regular inspections

Whether you own a residential or larger-scale Rewatec SBR system, regular inspections are crucial to extending its lifespan and ensuring it operates efficiently. Our team is here to help you assess your equipment’s condition and provide expert guidance. To discover our inspection solutions, contact our team today.
 

Count on our user-friendly design

Rewatec SBR systems are designed with ease of maintenance in mind. Most tasks, including inspections and parts replacements, can be performed without the need to empty the tank. This thoughtful design saves you both time and effort.

Rewatec SBR system warranty

For more than 25 years, we have developed sustainable, long-lasting products that make a difference for our clients, our professional partners, and our planet.

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

The Rewatec SBR system warranty* includes:

• 5 years for polyethylene tanks manufactured by Premier Tech
• 2 years for control panels and pumps
• 1 year for blowers
• proper system functioning and performance, if maintenance is carried out by our team

 

* Equipment must be properly installed and maintenance must be carried out in accordance with Premier Tech’s guidelines and by certified maintenance teams.

Rewatec SBR documents

Brochure (50 - 250 PE)

Assembly kit

SBR solutions for business, community, and industrial projects

We offer innovative, efficient, and sustainable SBR technologies to meet the needs of small communities and other projects serving up to 2,000 PE.

Our solutions fall into two categories: submersible injector aeration systems and membrane diffuser aeration systems.

Each type of system is tailored to meet your specific needs.
 

Submersible injector aeration systems

The BIOTRIT system is a compact, eco-friendly biological wastewater treatment solution designed for small communities, housing developments, campgrounds, hotels, and similar applications.

Ideal for capacities up to 1,000 PE, it offers reliable and cost-effective wastewater management — all within a single tank.

Key features:

• Proven efficiency: Removes more than 95% of contaminants, meeting European Directive 91/271/EEC.
• Compact: Allows for installation in small spaces with minimal operational costs.
• Innovative: Oxyjet aeration ensures uniform mixing and reduces energy consumption.
• Versatile: Treated wastewater can be reused for irrigation, promoting sustainability and resource reuse.
• Simple: Automated operation with low maintenance requirements.
• Discreet: Ideal for noise-sensitive areas.
   

How does the BIOTRIT system work?

The BIOTRIT system is an SBR that operates through automated cycles.

The standard system performs three daily cycles of aeration, clarification, discharge phases.

For situations that require additional treatment, an anoxic cycle can be added to remove nitrogen. This cycle not only boosts wastewater treatment performance but also enables automatic control of energy consumption and precise oxygen adjustment for the biomass. The anoxic cycle can be integrated during manufacturing or added after commissioning, based on your requirements.

Thanks to its optimized energy consumption, the BIOTRIT system can reduce electricity usage by up to 50%, leading to significant savings on your electricity bill. This energy efficiency can result in a quick return on investment, typically within 14 months, and as fast as 12 months under optimal conditions.
 

Filling and aeration

During the aeration phase, oxyjets guarantee a uniform mixture, promoting greater contaminant removal and optimizing energy consumption.
 

Clarification

Suspended solids and microorganisms separate from treated wastewater and settle at the bottom of the tank.
 

Discharge

Discharge of the treated effluent is carried out using a submersible pump equipped with a suction system, with a skimmer to avoid the suction of supernatants and settled sludge.
 

Membrane diffuser aeration systems

Our SBRs with membrane diffuser aeration are compact, pre-fabricated solutions that provide an efficient approach to wastewater treatment.

Ideal for projects serving 50 to 450 PE, these adaptable systems perform all treatment processes in one tank, which eliminates the need for a septic tank or equalization tank.

Key features:

• Efficient operation: Operates in predefined 8-hour cycles that can be adjusted based on the project’s needs.
• Robust and durable: Made of HDPE and engineered to withstand harsh conditions.
• Operational efficiency: Reduced costs thanks to optimized degradation within the reactor.
• Advanced components: Aeration system with fine-bubble membrane diffusers powered by an external blower.
   

How do our membrane diffuser aeration systems work?

Our membrane diffuser aeration technology lowers costs and simplifies installation by allowing wastewater to enter the tank directly.

The system operates in cycles of filling, treating, and discharging effluent using a low-load activated sludge process in a single reactor. Each cycle includes aeration, clarification, and discharge, all controlled by a set schedule. The system runs three 8-hour cycles daily.

For projects greater than 50 PE, we recommend adding a screening system before the reactor to improve performance.
 

Filling and aeration

Aeration is provided by a low-energy blower that pumps air through fine-bubble diffusers, supporting the microorganisms that make biological treatment possible.

Clarification

Wastewater is allowed to settle, causing suspended solids and microorganisms to sink to the tank's bottom.

Discharge

Treated wastewater is discharged using a submersible pump with a suction system, which includes a skimmer to prevent the intake of supernatants and settled sludge.

Activated sludge remains in the tank to treat subsequent batches of wastewater. Over time, excess sludge accumulates and must be removed following the guidelines in our user manual.