CE 412A: Sequencing Batch Reactors (SBR) for Wastewater Treatment

Aerobic and anoxic conditions are produced intermittently, allowing for the removal of carbonaceous BOD and nitrification/denitrification to occur.

The majority of denitrification takes place in the mixed-fill phase.

Phosphorus is released during the mixed-fill phase, and then taken up during the react phase.

<p>The purpose of the settle phase is to allow the activated sludge to settle, forming a distinctive interface with the clear supernatant, known as the sludge blanket.</p> Signup and view all the answers

<p>Sludge washout can occur, leading to a degradation of effluent quality.</p> Signup and view all the answers

<p>The biochemical reactions allow for the removal of carbonaceous BOD at rapid rates.</p> Signup and view all the answers

<p>SBR operates in batches in the same reactor, with each batch sequenced through a series of treatment stages, whereas conventional activated sludge processes have separate reactors for each stage.</p> Signup and view all the answers

<p>Fill, React, Settle, Decant, and Idle</p> Signup and view all the answers

<p>To create an initial start-up phase of a facility, or for plants that do not need to nitrify or denitrify</p> Signup and view all the answers

<p>Mechanical mixers are used to produce a uniform blend of influent wastewater and biomass, without aeration, promoting anoxic or anaerobic conditions.</p> Signup and view all the answers

<p>Aerated Fill involves both mechanical mixing and aeration, whereas Mixed Fill only involves mechanical mixing.</p> Signup and view all the answers

<p>It combines all treatment stages in a single reactor, making it more efficient and cost-effective.</p> Signup and view all the answers