Reciprocating leaching experimental device and experimental method

Abstract

The invention discloses a reciprocating leaching experimental device and an experimental method. The device comprises an experimental platform deck, a leaching device and a monitoring device, whereinthe leaching device comprises a leaching column, a filtrate mechanism, an air supply mechanism and an overturning mechanism; the monitoring device comprises a master controller, an overturning counting device and a timing unit, a first air pressure measuring unit and a second air pressure measuring unit; the experimental method comprises the following steps: I, preparation of the leaching experiment; II, assembling and adjusting of the leaching experimental device; III, multiple reciprocating leaching experiments and data finishing; and IV, finishing and cleaning of the reciprocating leachingexperiment. The device is reasonable in design, achieves reciprocating leaching of multiple media, reduces the consumption of the leaching liquid, can simulate the leaching experiments in various conditions, acquire the target element total amount difference and the leaching rate after the leaching test or the change condition of the medium adsorption rate, improves the leaching experimental efficiency and precision, and is high in practicality.

Description

technical field [0001] The invention belongs to the technical field of leaching experimental equipment, and in particular relates to a reciprocating leaching experimental device and an experimental method. Background technique [0002] Leaching, also known as "leaching", usually refers to the process of atmospheric precipitation infiltrating into the ground, and the seepage water dissolves and takes away the fine broken materials near the surface and the easily soluble components in the surrounding rocks. This process is called leaching. The purpose of leaching experiments often carried out in environmental science is to simulate the infiltration process of sewage, to study the adsorption, transformation, and self-purification mechanism of pollutants in the aerated zone, to determine the protective ability of the aerated zone, and to evaluate the impact of sewage seepage on groundwater quality. provide evidence for the impact of pollution. Through the experiment of leachate...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing leaching experimental device is simple and mainly includes leaching and peristaltic pumps, etc., and the control and collection of parameters such as leaching time, leachate flow, and driving force are not accurate enough;

[0006] 2. Only a single leached medium can be placed in the leaching column, and it is impossible to simulate complex geological conditions under the superposition of multiple layers of media;

[0007] 3. In the case of continuous dynamic leaching, the leachate enters the medium to be leached in one pass, resulting in a large consumption of leachate, and the concentration of target elements in the leachate is low, resulting in low accuracy and poor reproducibility of the experimental results

[0008] 4. After the leaching experiment, most of the experiments are the content changes of the target elements in the leachate, and very few experiments are carried out on the medium after leaching, and the sum calculation and verification of the total amount of target elements cannot be realized.

[0009] 5. The automation of the leaching experiment device is low, time-consuming and labor-intensive, and it is easy to make mistakes in the experiment

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