removal efficiencies were similar for BOD, COD, TKN and ammonia,
but higher for solids, grease/oil, and phosphorus.
Shorter retention time and
reduced aeration is the suspected cause, but more data is needed to confirm
this result.
During long periods of processing plant shutdown, addition of fish food was
found to maintain performance of the wastewater treatment system.
The treatment system is capable of producing an effluent which meets the EPA
effluent limitations in terms of BOD, SS and grease/oil.