Studies on the effect of inoculation of activated sludge with bacteria actively degrading hydrocarbons on the biodegradation of petroleum products.

摘要: Eighteen strains of bacteria were isolated from activated sludge purifying petroleum-refining wastewaters. These plated on solidified mineral medium supplemented with oil fraction in concentration 1000 mg/l. Four the that grew best presence selected for further studies. The identified based Bonde's scheme and microscopic observations. Three them belonged to genus Arthrobacter one Micrococcus. Stationary cultures single their mixtures set up containing (sterile non-sterile) as sole carbon source oils found be removed most efficiently by a mixture strains. After 14 days culture amount was utilized 63 95%. In next stage studies used inoculate sludge. oil. utilisation petroleum products non-inoculated (control), inoculated strain or all four examined. both approximately 80% removed, compared 60% control Therefore, showed 20% higher effectiveness removal derivatives.