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Simulation device and simulation method for repairing uranium-polluted underground water and recovering uranium

The technology of a simulation device and simulation method, which is applied in the field of repair and uranium recovery simulation devices, can solve the problems of low recovery efficiency, secondary pollution, impracticality, etc., and achieve the effects of increasing reaction rate, full reaction, and large reaction area

Active Publication Date: 2021-11-16
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a uranium-contaminated groundwater remediation and uranium recovery simulation device and simulation method, from the perspective of laboratory simulation technology, to realize the technical thinking of solar-driven in-situ remediation of uranium-contaminated groundwater and synchronous recovery of uranium , in order to solve the problems existing in the existing technology of uranium-contaminated groundwater treatment technology such as impracticality, easy to produce secondary pollution, and low recovery efficiency

Method used

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  • Simulation device and simulation method for repairing uranium-polluted underground water and recovering uranium
  • Simulation device and simulation method for repairing uranium-polluted underground water and recovering uranium
  • Simulation device and simulation method for repairing uranium-polluted underground water and recovering uranium

Examples

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Effect test

Embodiment 1

[0040] In the model of polluted groundwater containing uranium 10mg / L, the layered thin iron material is used as the anode, the high-strength conductive carbon material is used as the cathode, and the light intensity is controlled at 51200Lux. After 2 hours of reaction, uranium-containing magnetite is formed, and the uranium in the solution The removal rate reached 85.92%; the uranium-containing magnetic iron tetroxide was placed in a muffle furnace, roasted at 650°C for 1h, cooled to room temperature, taken out, and stirred and leached with 30g / L dilute sulfuric acid for 1h, the recovery rate of uranium Reaching 81%, the dissolution rate of iron is only 0.34%.

Embodiment 2

[0042] In the model of polluted groundwater containing uranium 10mg / L, the layered thin iron material is used as the anode, the high-strength conductive carbon material is used as the cathode, and the light intensity is controlled to 44000Lux. After 2 hours of reaction, uranium-containing magnetite is formed, and the uranium in the solution The removal rate reached 84.21%; put the uranium-containing magnetic iron tetroxide in a muffle furnace, roast it at 700°C for 1h, take it out after cooling to room temperature, and use 30g / L dilute sulfuric acid to stir and leach for 1h. The recovery rate of uranium Reaching 83%, the dissolution rate of iron is only 0.32%.

Embodiment 3

[0044] In the polluted groundwater model with uranium content of 10 mg / L, layered thin iron material is used as the anode, high-strength conductive carbon material is used as the cathode, and the light intensity is controlled at 33500 Lux. After 2 hours of reaction, uranium-containing magnetite is formed, and the uranium in the solution The removal rate reached 88.68%; take the uranium-containing magnetic ferroferric oxide and place it in a muffle furnace, roast it at 700°C for 1h, take it out after cooling to room temperature, and use 20g / L dilute sulfuric acid to stir and leach for 1h. The recovery rate of uranium Reaching 82%, the dissolution rate of iron is only 0.27%.

[0045] See Table 1 for the changes in the indicators of the polluted water body before and after the treatment of the specific embodiments above.

[0046] serial number Light intensity (Lux) Initial U 6+ Concentration (mg / L)

[0047] In the process of treating uranium-contaminated water, th...

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Abstract

The invention discloses a simulation device and a simulation method for repairing uranium-polluted underground water and recovering uranium. The simulation device comprises a uranium tailing pond geological structure simulation chamber and a solar energy conversion system or an illumination system; the simulation chamber comprises an injection well and an extraction well; the extraction well is arranged as a cathode hole, and the injection well is arranged as an anode hole; the center of the cathode hole is a drawing column, the periphery of the cathode hole is a cathode column made of a conductive carbon composite material, and the outside of the cathode hole is a perforated cylinder made of a corrosion-resistant material; the interlayer part of the bottom of the cylinder is a weak magnetic material which is used for adsorbing sediment, the center of the anode hole is an iron anode column, the upper part of the anode hole is provided with a distribution plate, and the drawing column is connected with the distribution plate through a pipeline; and the solar energy conversion system or the illumination system provides electric energy for the cathode and the anode. The method is wide in application range and high in repairing efficiency, secondary pollution can be avoided, and the method has important significance in repairing uranium-polluted underground water and researching uranium recovery.

Description

technical field [0001] The invention relates to the technical field of in-situ restoration of groundwater, in particular to a simulation device and simulation method for the restoration of uranium-contaminated groundwater and the recovery of uranium. Background technique [0002] At present, most of the uranium mining in my country comes from in-situ leaching. In-situ leaching uranium mining is a very advanced mining technology in the world. Inject the ground leaching liquid into the liquid injection hole, so that the ground leaching liquid and uranium can fully react, and then lift it up to the surface through the liquid pumping hole, and carry out the process of extracting uranium in the surface factory. Improper treatment or treatment has a high potential for percolation to contaminate groundwater. [0003] The most commonly used contaminated groundwater remediation technologies at home and abroad mainly include two categories: ex-situ remediation technology and in-situ re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C22B60/02C22B7/00C02F103/06
CPCC02F1/46109C22B60/0252C22B7/006C02F2001/46133C02F2103/06C02F2201/009Y02P10/20
Inventor 李密张玉苏玲张晓文吴晓燕滑熠龙
Owner NANHUA UNIV