A sequencing batch reactor (SBR) is a treatment process that consists of a sequence of steps that are carried out in the same containment structure, usually a tank reactor. A typical sequence for a SBR system is:
1. FILL, when the tank is filled with fresh wastewater
2. REACT, when aeration and mixing are used to promote microbial removal of waste constituents
3. SETTLE, when aeration and mixing devices are turned off to allow settling of suspended solids
4. DRAW, when clear effluent is drawn from the top of the reactor. Waste solids can be removed from the reactor after the DRAW stage from the bottom of the tank, or during the REACT stage while the wastewater is completely mixed.
FEATURES:
1. Equalization, Primary clarification, Biological treatment & Secondary clarification can be achieved in a single reactor vessel.
2. Minimal footprint
3. Flexibility in operating conditions allows for optimizing different treatment objectives.
4. Maintains a consistent quality of the effluent
