The reduction in BOD loading to the
contact-assisted activated sludge process carries
several additional advantages to DAF clarification.
There is a direct reduction in the amount of
air required on the aeration process and the indirect
impacts of lower solid production. The reduced
BOD loading to the aeration process will
also result in a reduced solids loading to the 2nd
stage DAF process and reduced waste sludge
pumping, both of which have either direct or indirect
cost savings to the facility.