Biological Control of Sphaerotilus Natans and Related Species in Waste Waters.

摘要

Six bacteriophage specific for Sphaerotilus natans were isolated. One bacteriophage,SN-1,was characterized in detail. Experiments employing an extended aeration unit were conducted to determine the practicality of biological control of Shaerotilus under simulated field conditions. Streptomycin resistant Sphaerotilus was employed as seed in the system. Numbers of surviving Sphaerotilus,numbers of bacteriophage,sludge volume index and suspended solids were measured over several weeks. Results indicate that bacteriophage control of Sphaerotilus in systems which have a high flow-through rate is impractical because of the high wash-out rate of the bacteriophage.