Method for preparing bricks from stale refuse landfill humus soil

Abstract

The invention relates to the field of comprehensive treatment of stale refuse landfills, in particular to a method for preparing bricks from stale refuse landfill humus soil. The method for preparing the bricks by using the humus soil of the stale refuse landfill comprises the following steps: (1) analyzing and testing the composition of the humus soil, and selecting proper humus soil; (2) crushing the humus soil, and sieving after crushing to obtain a humus soil undersize product; (3) uniformly mixing the humus screen underflow, the clay mineral additive and the building residue soil according to different proportions, and carrying out a brick making test, so as to determine the material proportions suitable for different brick types; and (4) uniformly mixing the humus screen underflow, the clay mineral additive and the building residue soil according to the material ratio determined in the step (3), and adding 18% of water for mixing. And (5) aging, drying and sintering according to a conventional brick making process to obtain a finished product. The invention provides a feasible humus brick making scheme, and high utilization of waste resources is realized.

Description

technical field [0001] The invention relates to the field of comprehensive treatment of outdated garbage landfills, in particular to a method for making bricks with humus soil in outdated garbage landfills. Background technique [0002] Obsolete waste, also known as mineral waste, refers to municipal solid waste that has been in landfills or piled up for many years. Since the 1970s, my country has gradually adopted the landfill method to dispose of municipal solid waste. With the large-scale land development in recent years, these landfill sites have become scarce resources and have huge development value. [0003] Recycling disposal of stale waste is the most important problem faced by landfill management, especially the disposal of humus with the highest content. 40-70% of the stale waste after excavation is humus under sieve. Humus can be used as greening soil, backfill soil, etc., but its use as greening planting soil or greening maintenance soil must meet the standard...

AI Technical Summary

Problems solved by technology

Humus soil can be used as soil for greening land, backfill soil, etc., but its use as soil for greening planting or soil for greening maintenance must meet the "Green Planting Soil" (cj / t340-2016) standard, and the main excessive indicators in general humus soil are Salt content, organic matter, heavy metals, etc., it is difficult to realize large-scale greening soil and backfilling soil, even humus soil without pollution still faces a large demand for greening soil

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