In this paper we studied the characteristics of microflora in the apparatus for pre-treatment of wastewater from styrene and propylene oxide production. The composition of microbial community that participated in the process of biological treatment of wastewater in the bioreactor was studied. The values of organic loading of influent and effluent wastewaters were established. The operating efficiency of the bioreactor was estimated. The COD values of the influent wastewater reached 80000 mg/l during the analyzed period. The amount of microorganisms in the bioreactor apparatus of the studied wastewater pretreatment ranged from 0.74×10 5 to 0.23×10 6 and from 1.68×10 5 to 1.7×10 6 for suspended and immobilized microflora, respectively. It was established that bacteria from the genera Pseudomonas and Lysinibacillus contributied mainly in the treatment process.
нефтехимические сточные воды, стирол, окись пропилена, биологическая предварительная обработка, суспендированная микрофлора, иммобилизованная микрофлора, petrochemical wastewater, styrene, propylene oxide, biological pre-treatment, suspended microflora, immobilized microflora
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