A large regional canning facility's biochemical
oxygen demand (BOD) levels in their wastewater ranged
from several hundred to a few thousand milligrams
per liter (mg/L). The wastewater BOD load exceeded
the assimilative capacity of the treatment lagoons
leading to extended periods of anaerobic conditions.
These anaerobic conditions, in turn, cause unacceptable
groundwater conditions. Enhanced oxygenation of
the lagoons was believed to be one potential option
to assist in greater reduction of BOD beyond that
of traditional surface aerators.
A demonstration of the DynamOx prototype was performed
resulting in significant reduction in BOD (91% removal),
NO2/NO3 nitrogen (75% removal), ammonia nitrogen
(97% removal), and total inorganic nitrogen (96%
removal). Some reduction was also found for suspended
solids (37% removal).
|
