A method for ecological restoration of landfill closure by utilizing deeply mineralized stale garbage

Abstract

The invention relates to the technical field of garbage treatment, in particular to a method for compounding the use of deeply mineralized stale garbage for ecological restoration of landfill closures. The sealing ecological restoration filling layer of the present invention is successively a vegetation layer, a drainage layer, an anti-seepage layer and an exhaust layer from top to bottom; the vegetation layer is a composite layer of humus soil and general soil; the drainage layer includes an upper grain The gravel layer with a diameter of 20-50mm and the humus layer of the lower layer; the anti-seepage layer includes the geomembrane of the upper layer and the clay and humus soil composite layer of the lower layer; the exhaust layer includes the particle size of the upper layer of 20-50mm gravel layer and the underlying humus layer. The present invention applies deeply mineralized stale waste humus soil to the filler layer, fully utilizes the microbial degradation and adsorption characteristics of the humus soil, and improves the protection against organic pollutants on the surface of the garbage heap, Landfill leachate, odor, methane produced by biological metabolism and other pollution biological decomposition ability, strengthen the ecological restoration function of landfill.

Description

technical field [0001] The invention relates to the technical field of waste treatment and comprehensive utilization of resources, in particular to a method for compounding deep mineralized stale waste for ecological restoration of landfill closures. Background technique [0002] At present, the relevant regulations stipulate that the structure of the landfill closure and covering system is sequenced from the surface of the garbage pile to the top surface: exhaust layer, anti-seepage layer, drainage layer, and vegetation layer. At present, crushed stone is generally used for the exhaust layer in the industry, and the anti-seepage layer can be composed of geomembrane and compacted cohesive soil or geotechnical polymer clay liner (GCL), or the compacted cohesive soil layer can be used alone. Gravel is generally used for the layer, and the vegetation layer should be composed of the vegetative vegetation layer and the covering and supporting soil layer, and the soil is generally...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in view of the above-mentioned existing problems, a method of using deeply mineralized stale waste compound for ecological restoration of landfill closure, applying deeply mineralized stale waste humus to landfill In the sealing packing layer, give full play to the characteristics of deeply mineralized old waste humus, and improve the pollution of the landfill sealing packing layer to the surface of the garbage dump, such as organic pollutants, landfill leachate, odor, and methane produced by biological metabolism. The ability to eliminate waste, accelerate the stabilization process of landfills, and strengthen the ecological restoration function of landfills

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