Captor effluent flows into two activated sludge basins for further treatment. The
average M.L.S.S. in the aeration basins during the summer months is 1400 to 1600
mg/l and during the winter months is 2200 mg/l. D.O. is maintained at 2.5 to 3.5
mg/l by two direct drive centrifugal blowers with a third blower reserved for backup.
Air from the blowers is distributed throughout the basins by high efficiency EPDM
membrane diffusers. The sludge age ranges from 5 days to 15 days. The S.V.I. ranges
from 100 o 380 depending on the mode of operation.
Inf. Avg. mg/l
Eff. Avg. mg/l
% Rem Avg.
The performance of the Captor/Activated sludge after 23 years of operation is shown below