FIELD: waste water treatment.
SUBSTANCE: invention is meant to be applied for removing petroleum products from industrial waste waters and can be used at enterprises of petroleum, petroleum processing, petrochemical, and has processing industries. Process comprises flotation, biological intensive aeration, biological aftertreatment, and fine aftertreatment. In biological intensive aeration and biological aftertreatment, biocenosis packing utilized is nonwoven polypropylene material with pore size 80-230 μm, cloth thickness 0.30-0.55 mm, and in amount 0.45 to 1.43 g per 1 L water to be treated. Excess biomass is subjected to anaerobic fermentation and 1/3 thereof is used in flotation stage, while the rest is sent to biological treatment of oil slime.
EFFECT: reduced number of treatment stages, investment and operation expenses, and speeded up treatment process.
2 cl, 3 tbl, 9 ex
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