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Detection of Industrial Pollutants and Toxic Chemical Wastes in Sewage Treatment Plant Influents by Use of a Biological Monitor

Heterogeneous mixtures of toxic chemical wastes affecting the normal operations of a sewage treatment facility employing anaerobic digestion were detected by dark-field observation of uncoordinate flagellar orientation patterns displayed by cells of Spirillum volutans. These results were compared with plant parameters determined by gas production, volatile fatty acids, and alkalinity measurements.