COMPOSITION OF LAND RECLAMATION AGENTS AND METHOD FOR HUMUS-LESS RECLAMATION OF DISTURBED TERRAINS

摘要

The composition and the method are used in terrains disturbed by mining activities, in particularly in the opencast coal mining. The general ecological vitality and productivity of the soil is being restored and improved by their application. The composition of the land reclamation agents comprises, in %, mandatory natural organic biomass from 35 to 65 - organic manure from livestock raising farms and poultry raising farms having nitrogen content from 0.55-1.10, phosphorus 0.35-1.35, potassium 0.35-0.70 or sludge from waste water-treatment stations from pig raising farms, with nitrogen content ranging from 0.22 to 2.10; phosphorus 0.30-1.40, potassium 0.05-0.15 and ashes from Thermoelectric Power Plant coal from 0 to 50, with bulk density up to 0.75 g/cm3 and mechanical composition - physical clay content (fraction under 0.01 mm) under 15%, optionally - sludge from town residential waste water treatment stations, in %, from 15 to 50, with the content of nitrogen 1.80-2.95, phosphorus 0.13-2.45, potassium 0.05-0.70 and/or sludge from the paper and cellulose industry from 15 to 50 with content, in %, of nitrogen 0.20-0.40, phosphorus 0.05-0.65, potassium 0.01-0.02 and/or phosphogypsum from 5 to 10. The method consists in laying over technically well-levelled terrains, prepared for reclaiming of a composition of reclamation agents in quantity from 15 to 35% in comparison with the quantity of the surface (0-0.30 m) layer and their joint treatment by mixing the components until the production of a homogenous soil substrate. 2 claims