WHOLE-PLANT SIMULATIONS FOR TWO PURE-OXYGEN ACTIVATED SLUDGE PLANTS IN SAN FRANCISCO

This paper discusses the usage of settling column tests, full-scale stress tests, and whole-plant simulators as planning tools to assess the ultimate treatment plant capacity as well as impacts of process changes to effluent quality, process performance, side streams, and biosolids production rates. These planning tools are described in detail and the results of their implementation are presented for the two pure-oxygen activated sludge plants in San Francisco, California.