A sequencing batch reactor (SBR) is an advanced technology used for wastewater treatment. It is a process that operates in cycles, where different phases of the treatment process occur sequentially in a single tank. The term "SBR" is sometimes used interchangeably with "batch reactor" or "sequential batch reactor." However, there are several other synonyms for the term, including intermittent cycle extended aeration, continuous flow SBR, and fill and draw systems. These systems all rely on a similar workflow, where wastewater is treated in batches and processed in different phases before being discharged. Regardless of the terminology used, SBR systems are an effective and efficient way to treat wastewater in various applications and industries.