||Parallel Evaluation of Air- and Oxygen-Activated Sludge.
Austin, Scott ;
Yunt, Fred ;
Wuerdeman, Donald ;
Garrison, Walter E. ;
||Los Angeles County Sanitation Districts, Whittier, CA.;Municipal Environmental Research Lab., Cincinnati, OH.
Sewage treatment ;
Activated sludge process ;
Pilot plants ;
Performance evaluation ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
To provide data on the relative merits of air and oxygen in the activated sludge process, two 1900-cu m/day (0.5-mgd) activated sludge pilot plant, one air and one oxygen system, were operated side-by-side at the Joint Water Pollution Control Plant, Carson, California. Both of the pilot plants met the applicable discharge limitations for everything but three trace metals, but the oxygen system provided a more stable operation. Primary differences in performance concerned ammonia nitrogen removals and energy consumption. Differences in sludge production were not significant.