What is an SBR Treatment System?
Sequencing Batch Reactor
At Xealio, we offer SBR wastewater treatment technology as a compact, flexible, and highly effective solution for treating domestic, municipal, and industrial wastewater. SBR is a well-established biological treatment technology which recycles a single biological treatment tank as multiple stages in the treatment process, including filling, aeration, biological reaction, settling and discharge of treated water.
In an SBR system, the process is performed in time instead of in space, as is the case with conventional wastewater treatment systems which usually have separate tanks for each treatment step. This implies that the wastewater is processed in a controlled batch in a single reactor tank. This results in less need for extra clarifiers, sludge return pumps and complicated hydraulic arrangements, and makes it particularly suitable for compact and containerized treatment plants.
SBR Steps
Fill Phase
The typical stages of the SBR process include five steps. In the fill phase, the wastewater enters the reactor. This phase can be performed aerated or without aeration, or with and without mixing. Such conditions facilitate biological treatments like removal of organic matter, reduction of nitrogen and reduction of phosphorus.
SBR STEPS
Reaction Phase
Following the reaction phase, the system goes into a settle phase. The entire aeration and mixing is stopped and the biological sludge will settle naturally at the bottom of the tank. During this period the tank is stationary and solids separation may be very efficient as compared to continuous-flow systems.
SBR Steps
Settle Phase
The draw / decant process starts when the sludge has settled. The treated water is gently pumped from the top clear section of the tank through the decanting mechanism of the tank and not disturbing the settled sludge at the bottom of the tank. If desired, an idle time phase may follow that provides flexibility in the system before the next cycle starts and permits the removal of excess sludge when required.
SBR STEPS
Decant Phase
Following the reaction phase, the system goes into a settle phase. The entire aeration and mixing is stopped and the biological sludge will settle naturally at the bottom of the tank. During this period the tank is stationary and solids separation may be very efficient as compared to continuous-flow systems.
One of the most important benefits of SBR technology is its capacity to enable high levels of nutrient removal. The system can be designed to remove organic pollution, nitrogen and phosphorus, since aerobic and anoxic, as well as anaerobic conditions can be created in the same tank.
At Xealio we incorporate SBR technology into engineered wastewater treatment systems that are practical, automated and flexible to meet site needs. Controlling modern SBR systems can be achieved using timers, sensors, dissolved oxygen monitoring and PLC based automation, resulting in a flexible process control while maintaining the reliability of operation.
When space efficiency, treatment performance and flexibility of operation are significant, SBR technology provides a good balance between compact design and high quality effluent. The Xealio engineering approach allows for the transfer of this technology to containerized plants, remote sites, industrial facilities, communities, and projects needing reliable wastewater treatment in challenging environments.
