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Sequencing Batch Reactors (SBR)

Sequencing Batch Reactor is a type of activated sludge system
that allows treatment to take place directly in the reactor.

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What is a Sequencing Batch Reactor (SBR)? In simple terms, and as its name suggests, an SBR treats the wastewater in batches. A Sequencing Batch Reactor is a very compact process typically used in small- to medium-sized plants. A small SBR consists of two equal-sized tanks that alternate between treatment stages. The process begins with the filling of one of the tanks. As soon as the first tank is filled, wastewater is diverted to the second tank and the process begins again. The multiple tank (reactor) design allows the plant to operate continuously and larger plants use more reactors to accommodate higher loads.

How Do Sequencing Batch Reactors Work? There are four steps in an SBR system:

  1. The wastewater enters the 1st chamber, also known as primary treatment; this is where solid substances in the water are found. 
  2. Next the wastewater is then transferred to the second chamber, which is the SBR tank.
  3. Third is aeration! Activated sludge develops in the SBR tank and the bacteria will start cleaning the wastewater thoroughly.
  4. A rest phase is next. In this step, the activated sludge sinks to the bottom of the system, which allows a clarified water zone to form at the top of the SBR tank.
  5. The purified wastewater is now fed into a discharge system (stream, river, sea) or into an infiltration system.
  6. The activated sludge is fed back from the SBR tank into the first chamber and the tank is idle until a new cycle starts.
SBR atlas copco wastewater treatment

Aeration Technologies for Sequencing Batch Reactor

Atlas Copco offers seven different blower and aeration technologies for wastewater and industrial applications. We fit the absolute best technology to you – no favoritism involved. Having a complete range means that the technology we select for you will be the most efficient product for your application over the cost of its lifetime, when you factor the cost of purchase, electricity usage, and service (downtime) costs. What’s more? We have the calculators to show you the complete payback analysis before you even part with one dollar.

Atlas Copco innovates in all aspects of compressed air and gas production. Our promise to you is we do more. What does that mean? Simply, we go further and deeper in every aspect of our offering to you and that promise extends way beyond just products. With a presence across the entire United States, and over 350 technicians on the road every day, Atlas Copco specializes in finding ways to make your wastewater and industrial processes more efficient. 

Aeration Blowers for Wastewater Treatment

Additional Wastewater Treatment Applications