How do our SBR systems work?
Aeration cycles
Inside our SBR systems, intermittent aeration cycles break down solids and provide oxygen to microorganisms that feed on organic wastewater pollutants.
Rest phase
After aeration, remaining solids — including microorganisms — sink to the bottom of the tank. Some remain inside the tank to treat the next batch of wastewater. They are what is 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 over-design 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 SBR, treated wastewater forms at the surface. An SBR decanter with a solids-exclusion feature drains this wastewater so that it can be safely released into the environment.
