Page 21 - Simplified Wastewater Treatment Fundamentals\SBR

Sequential Batch Reactors (SBR)

SBR Operation

SBR’s require preliminary treatment, including debris, rag and grit removal.

Without preliminary treatment the SBR tanks would quickly lose capacity due to

sediment accumulation.

SBR’s require support systems, including automatic actuator valves which open

and close to initiate a cycle or phase of a cycle. SBR’s need a source of air provided

by blowers.

SBR treatment can be enhanced with flocculants (metal salts) or coagulants

(polymer).

As with conventional activated sludge, SBR’s must maintain a calculated Sludge

Retention Time (SRT) achieved by daily calculated wasting. The SBR can remove

the excess biomass by pumping to a sludge thickening device, digestor, or by

offsite transport.