PROCESSING METHOD OF SEWAGE DISPOSAL PLANTS SLUGS OF OIL-AND- GAS AND OIL-REFINING INDUSTRIES Russian patent published in 2008 - IPC C02F11/00 B09B3/00 B09C1/00 

FIELD: oil-and-gas industry.

SUBSTANCE: invention can be used in oil-and-gas and oil-refining industry for deactivation of slugs and wastewater mud of oil-and-gas and oil-refining industries as well as during recultivation of providing ground of industrial waste. The method includes layered distribution of slug on the space with water-proof fundament; mixing slug with organic location detacher; adding mineral fertilisers containing nitrogen, phosphorous and clean ground to slug; regular ripping, moistening and sowing perennial grasses on prepared slug. Before adding mineral fertilisers, clean ground and detacher, slug is dried to the humidity of 60-70%. After mineral fertilisers and detacher have been added, slug is kept. After clean ground has been added to dried slug surface, new-mown grass or hay is added in a layer of 10-20 cm as an organic detacher. Mixture of slug, ground, grass or hay is stirred by plowing. The prepared mixture is kept till phytotoxity of less than 50%. Then, hayseed sowing is added. Seeds of lawn grass mixture are used for sowing. In the composition of lawn grass mixture, weed seeds content constitutes no less than 20% and seeds sowing dose is 5-10 g/m² for processing mixture. When the grass reaches the height of 15-20 cm, its green mass is plawn down and grass is resown one move time. There should be no less than three sowing and plowing cycles in one spring-winter season.

EFFECT: effective and simple method for processing slug with application of ecologically friendly processes of farming engineering and creation of ground available for practical use.

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