Investigation of Bacterial Populations Producing Elevated MPN Values and False Positive Fecal Coliform Counts and Applicable Disinfectants in an Industrial Wastewater

This poster presents data on the types of bacteria which produced elevated, most probable number (MPN) fecal coliform values in an industrial waste treatment plant effluent. The principal influent stream, a pulp and paper mill wastewater, contained principally Klebsiella species of environmental, not enteric origin. Fecal streptococci and enterococci were low in numbers. Eight disinfectants were tested on a small (currently acid disinfected) municipal wastewater incoming stream and on the main plant effluent.