Ecological Systems and Devices Annotation << Back Flocculating agents utilizing in sewage treatment Perov S.N., Korneeva O.S. The reasons for use of microorganisms as bioflocculants for effluents treatment are presented in the article. The culture of actinomycete Str. chromogenes s.g. 0832 was the object of investigations. A relationship between the in velocity of sedimentation of flakes, turbidity and the time of sedimentation ware established. Is shown, that the best effect of defecation was observed through 2 h of settling. Is marked, that the greatest effectiveness of wastewater clearing was exhibited at importation of a cultural liquid after 2 days of microorganism cultivation that correlated with its maximal proteolytic activity. The conclusion about positive influence of actinomycete on flocculation process on is made.