Investigation of biological nitrogen removal for an industrial wastewater treatment plant.

摘要

Scope and Method of Study. The purpose of this study was to determine if biological nitrogen removal is occurring at the industrial wastewater treatment plant of interest. Two seasonal sampling events were performed, one winter and one summer event. The samples were then analyzed in the Oklahoma State University Environmental Engineering laboratories for a variety of parameters.;Findings and Conclusions. It was determined from the samples collected that biological nitrogen removal is occurring at the industrial wastewater treatment plant of interest. Ammonia-nitrogen is oxidized biologically by autotrophic bacteria and converted to nitrate-nitrogen. The nitrate-nitrogen is then serves as the final electron acceptor for heterotrophic bacteria under no or low DO concentrations and is reduced to nitrogen gas. The nitrogen gas is insoluble, therefore, coming out of solution and dissipating into the atmosphere. Since the industrial wastewater treatment plant is not designed or operated as a biological nitrogen removal plant, it was determined that nitrogen removal is occurring through simultaneous nitrification/denitrification.