Experimental apparatus for antimony release, migration and simulation in heavy metal contaminated soil in mining area

Abstract

The invention discloses an experimental apparatus for antimony release, migration and simulation in heavy metal contaminated soil in the mining area. The principle of peristaltic pumping is adopted tosimulate dynamic adsorption environment in the soil, the competitive adsorption of phosphorus and antimony in the soil can be analyzed effectively, and the effect of different phosphorus elements onantimony activity is analyzed; by setting a ceramic nanometer membrane, the influence of airtightness and watertightness of the inner wall of a cylinder on the soil internal migration and release canbe reduced, and the authenticity of experimental simulation is maximized; meanwhile, the setting of a guide sleeve can improve the uniformity of a solution flowing in the soil and the reliability of the experimental simulation so that antimony release and migration can be simulated under optimal conditions. By the arrangement, liquid collection can be automated, automatic liquid collection of liquid collection tubes can be achieved, and subsequent analysis is facilitated.

Description

technical field [0001] The invention relates to an antimony release migration and simulation experiment device in heavy metal polluted soil in a mining area, and belongs to the technical field of antimony release migration simulation experiment technology in a mining area. Background technique [0002] Antimony is a toxic heavy metal, which is highly toxic to human health. Therefore, the form and geochemical behavior of antimony in the environment have attracted extensive attention from the scientific community. For the long-term large-scale antimony ore mining and smelting waste rocks, waste residues, waste water and waste gas, a large amount of toxic elements are released into the water and soil, which seriously damages the ecological environment of the mining area and threatens human health. Although the heavy metal antimony exists mostly as insoluble residues in the soil, its activity is low, and there is no evidence of serious damage to the soil so far, but the environm...

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Problems solved by technology

Although the heavy metal antimony exists mostly as insoluble residues in the soil, its activity is low, and there is no evidence of serious damage to the soil so far, but the environment will change the activity of antimony, and even greatly increase its activity , thereby increasing its bioavailability, promoting migration into plants, and ultimately endangering human health

[0003] At the same time, in order to increase the yield of crops, a large amount of phosphorus fertilizers are applied in agricultural production, and some phosphorus-containing substances will also be added in soil restoration. Current research has found that there is a competitive adsorption between element phosphorus and antimony, and phosphorus in the soil will Reduce the adsorption of antimony and enhance the activity of antimony. Then, a large amount of phosphorus enters the soil, which may have an impact on the release of phosphorus, which in turn may cause antimony to migrate into organisms and affect human health through the food chain. Therefore , how to simulate and study the release, migration, and parasitic simulation experiments of antimony in heavy metal-contaminated soils in mining areas plays an extremely important role

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