System and method for removing inorganic inert impurities in humus soil

Abstract

The invention relates to a system and a method for removing inorganic inert impurities in humus soil. The system comprises a stirring tank, an overflow tank, a water collecting chamber and an air compressor communicated with the water collecting chamber which are communicated in sequence, the top of the stirring tank is provided with a feed inlet, and the overflow tank is internally provided with a drain board mud-water separation mechanism communicated with the water collecting chamber; the method comprises the steps that humus soil and water are added into the stirring tank to be stirred and mixed, inorganic inert impurities in the humus soil are precipitated at the bottom of the stirring tank, a solution formed by dissolving the humus soil in the water enters the overflow tank to be subjected to vacuum suction dehydration, and the dehydrated water enters the water collecting chamber to be collected. Compared with the prior art, through wet-process stirring and cleaning, the problem that inorganic impurities such as gravels and cullet with more and smaller particles in humus soil cannot be separated is solved; the drainage plate is used for vacuum preloading treatment, and efficient mud-water separation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of stock garbage mining and screening humus soil treatment, and relates to a system and method for removing inorganic inert impurities in humus soil. Background technique [0002] Humus soil is the component with the highest proportion of stale garbage after screening. It is rich in organic matter, microorganisms and nutrients, and has excellent physical and chemical properties. It can be used as fertile soil for urban greening and as a bioreactor with superior performance Filler or medium use. [0003] At present, the humus soil under the sieve of the mineralized waste mined from domestic landfills is mainly used for urban greening soil after treatment or for mine pit backfill. However, the humus soil contains many inorganic substances such as broken stones and broken glass with small particles. Especially in the southern region, due to the large amount of precipitation in summer, the organic matter in the...

AI Technical Summary

Problems solved by technology

However, the humus soil contains many inorganic substances such as broken stones and broken glass with small particles. Especially in the southern region, due to the high precipitation in summer, the organic matter in the humus soil will be lost after the heavy rain washes, leaving more broken stones and broken glass. Glass has a great impact on the perception and function of humus soil as greening soil

Existing humus soil screening technology cannot separate small-grain sandstone from humus soil, which greatly restricts the resource regeneration and utilization of humus soil

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