In this paper we considered the pretreatment system of petrochemical wastewater from production of styrene and propylene oxide in the bioreactor. The values of organic pollution of the influent and effluent wastewaters were established. The concentrations of aromatic compounds before and after the biofilter were determined. The efficiency of the bioreactor and biofilter operation was estimated. The efficiency of operation of one and two biofilters for removing volatile compounds was analyzed. It was shown that the efficiency of the biofilter operation is sufficiently high and allows for the reduction of the concentration of aromatic compounds in the output of the biofilter up to 100%.
нефтехимические сточные воды, стирол, окись пропилена, биофильтр, биологическая предварительная обработка, petrochemical wastewater, styrene, propylene oxide, biofilter, biological pre-treatment
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