1113results about How to "Solve the pollution of the environment" patented technology

The invention provides a planting soil and a preparation method thereof. The planting soil comprises the following raw materials in parts by mass: 100-120 parts of sludge, 40-50 parts of iron tailingssand, 10-15 parts of a decomposed organic fertilizer and 20-30 parts of tailings-sludge activated carbon. The preparation method comprises the following steps: (1) uniformly mixing the sludge, iron tailings sand, the decomposed organic fertilizer and the tailings-sludge activated carbon according to a mass ratio of (100-120):(40-50):(10-15):(20-30) to obtain a mixture; and (2) adding a sludge fermentation strain into the mixture, uniformly mixing the materials, and decomposing the mixture for 10-15 days to obtain the planting soil. According to the planting soil provided by the invention, coal slime, molybdenum tailings, phosphorus tailings, magnesite slag and the iron tailings sand are widely applied in abandoned mines, so that the problems of land resource occupation and environmental pollution caused by tailings stacking are solved, the resource utilization of tailings is realized, wastes are changed into valuables, and the effective utilization rate of resources is improved; and meanwhile, the application of sludge to the planting soil also provides a solution for recycling, reduction and harmless treatment of sludge.