Component separation process of soil sample

Abstract

The invention provides a component separation process of a soil sample, relates to the technical field of soil purification, and particularly relates to a process for separating heavy metals in the soil sample and equipment used by the process. The process comprises the following steps of: step 1, taking the soil sample, and directly pouring soil onto a roller through a conveyor belt; step 2, crushing the soil by using a pair of grinding rollers; step 3, enabling the crushed soil to directly fall onto a screen, sieving the soil by using a 50-mesh sieve, and removing block-shaped substances; and step 4, enabling the sieved soil to directly enter a soil separator 4, blowing the soil by using a blowing device below, meanwhile, rotating the soil separator, blowing the soil onto the inner wall of the soil separator by using wind power, and respectively separating the soil at different heights into upper and lower different cavities of a soil collector by using a rotating centrifugal force, so that the soil with different specific gravities is separated. The process provided by the invention solves the problems that the heavy metals are not uniformly distributed in the soil, a large number of soil samples need to be taken for detection, the content of the heavy metals in the soil is low, and the detection accuracy is low.

Description

technical field [0001] The invention relates to the technical field of soil purification, in particular to a process and equipment for separating heavy metals in soil samples. Background technique [0002] Soil has many and complex components, generally including minerals, organic matter, water, air, microorganisms, etc. Soil provides nutrients and water for plants, and is the main place for plant growth, photosynthesis and energy exchange. [0003] Today's soil environmental problems mainly include: soil erosion, soil erosion, land desertification, soil salinization and soil pollution, among which soil pollution is an important problem that needs to be solved urgently. With the development of the economy, the soil is gradually polluted by industrial waste gas, waste water, and waste residue. Some people even use industrial waste water to irrigate crops directly, resulting in cadmium, copper, arsenic, chromium, mercury, nickel, iron, aluminum, zinc, A large amount of heavy...

AI Technical Summary

Problems solved by technology

[0010] The invention provides a component separation process of soil samples, which solves the problems of uneven distribution of heavy metals in the soil, the need to take a large number of soil samples for detection, and the low detection accuracy of heavy metal content in soil

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