Understanding the SBR (Sequencing Batch Reactor) Technology for Wastewater Treatment
What is SBR? Sequencing Batch Reactors, or SBRs, utilize a single tank (or sometimes two tanks) to sequentially perform multiple wastewater treatment functions. This advanced system is both space-efficient and effective, optimizing the treatment process without requiring separate physical chambers. GRAF systems, for example, are capable of cleaning wastewater with an efficiency of up to 98%, significantly exceeding legal standards.
How Does the SBR System Work? The SBR system processes wastewater through a series of timed stages within the same tank, controlled by an automated system:
- Charging Phase:
- Wastewater enters the tank and solid particles begin to settle. This stage acts as a virtual “first chamber” for preliminary settling.
- Aeration Phase:
- The system then introduces air to aerate the water, promoting the growth and activity of beneficial microorganisms which break down pollutants. This serves as the virtual “second chamber” for biological treatment.
- Settling Phase:
- After aeration, the microorganisms and heavier solids settle at the bottom, creating a sludge layer. This phase mimics a “third chamber,” allowing clearer water to be distinguished from the sludge.
- Clear Water Extraction:
- The clear water, typically located at a mid-level to avoid floating solids and bottom sludge, is then extracted and directed for infiltration or discharged into surface water bodies like rivers and streams.
Why Choose SBR? This compact and highly effective system not only meets but exceeds environmental standards, providing a reliable and sustainable solution for wastewater management across various applications.
