Page 19 - Simplified Wastewater Treatment Fundamentals\SBR

Sequential Batch Reactors (SBR)

Advantages

SBR’s provide the Operator with flexibility. During low seasonal flows, the Operator

can reduce the number of SBR tanks online. During high flows, the Operator can

place additional SBR Tanks online.

During colder seasonal temperatures, the Operator can extend aeration time and

settling time when colder temperatures slow metabolisms and result in denser

water and slower settling mixed liquor.

During seasonally warmer weather, aeration time and settling time can be

decreased.

If an SBR facility is infected with a population of slow settling filamentous bacteria,

the Operator can lengthen settling time to help bulking sludge to better settle

until the core cause (filaments) can be reduced in population utilizing a calculated

low dose of chlorine or sodium hypochlorite.