METHOD OF DECONTAMINATION OF HYDROCARBON WASTE Russian patent published in 2001 - IPC

FIELD: processing of production waste from metal working plants and metallurgical works. SUBSTANCE: waste is mixed with calcium-containing reagent, water-oil soluble surfactant is added, the whole is mixed in turbulent mode till stable suspension state of mixture is attained, and film-forming component is added at the end of mixing process. Mixing is carried out, ratios of components being as follows, wt %: water-oil soluble surfactant, 0.15-0.50 refractory production quicklime with particle dispersity of 150-500 mcm calculated for active ingredient, 10-40; film-forming component, 0.25-1; water, 15-20; hydrocarbon slurry waste from metal- working plants and metallurgical works, up to 100. The resulting product is utilized. Method makes it possible to increase decontamination efficiency by improving mechanical strength and water repellent properties of granules which encapsulate hydrocarbon waste. EFFECT: more efficient decontamination method. 8 cl, 1 ex, 2 tbl