FIELD: cleaning of sulfurous alkaline runoff of fuel refining and petrochemical processes.
SUBSTANCE: proposed local cleaning of sulfurous alkaline runoff includes two stages: oxidizing stage performed by means of catalyst (modified phthalocyanine catalyst on polypropylene base) and continued for 24 h at temperature of 60-90°C and delivery of air at flow rate of 20-25 m3/h for 24 h and biological stage performed in aerobic reactor with use of biocenosis of nonwoven material-geotextile- as packing; sizes of pores of this material range from 80 to 320 mcm at thickness of cloth of 0.30-0.55 mm in the amount of 0.45-1.43 g/l; after first stage of treatment, sulfurous alkaline runoff is diluted with cleaned drainage water at mass ratio of 1:200.
EFFECT: high degree of cleaning; possibility of throwing cleaned water into pools.
2 cl, 1 tbl, 10 ex
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