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Method for restoring uranium contaminated water body employing floating plant

A technology for floating water plants and uranium pollution, which is applied in the field of repairing uranium-contaminated water bodies to achieve the effects of strong uranium enrichment ability, simple management, and increased nutrition

Active Publication Date: 2010-01-20
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on phytoremediation of uranium-contaminated water bodies has not been reported. The screening of super-enrichment plants for uranium-contaminated water bodies is the prerequisite and key step for phytoremediation of uranium-contaminated water bodies, which requires the screening of uranium-enriched plants for floating water bodies.

Method used

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  • Method for restoring uranium contaminated water body employing floating plant
  • Method for restoring uranium contaminated water body employing floating plant
  • Method for restoring uranium contaminated water body employing floating plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Plant 5g, 10g, and 15g of Manjianghong in 2L of uranium-containing water bodies of 1.25mg / l in 3 groups respectively, and see the relationship of the removal effect of uranium with time figure 1 . After 9 days, the uranium content of Manjianghong was 650mg / kg. The greater the amount of Manjianghong, the better the removal effect, but the density should not be too large, 15g in 2L of water is the best.

Embodiment 2

[0036] Plant 5g, 10g, and 15g of Manjianghong respectively in 2L water bodies containing 2.5mg / l of uranium in 3 groups. See the attached figure 2 . After 9 days, the uranium content of Manjianghong was 1177mg / kg. The greater the amount of Manjianghong, the better the removal effect, but the density should not be too large, 15g in 2L of water is the best.

Embodiment 3

[0038] Plant 5g, 10g, and 15g of Manjianghong in three groups of 2L water containing 5.0mg / l of uranium respectively. See the attached image 3 . After 9 days, the uranium content of Manjianghong was 2118mg / kg. The greater the amount of Manjianghong, the better the removal effect, but the density should not be too large, 15g in 2L of water is the best.

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Abstract

The invention provides a method for restoring uranium contaminated water body employing floating plant which adopts floating fern azolla as material to repair uranium contaminated water body. The method comprises the following specific steps: (1) planting 2.5-7.5g of azolla for each litre of wastewater which contains 1.25-10mg / L of uranium; (2) adjusting the pH value of the wastewater to 6-10; (3) taking out azolla after 9 days; (4) transferring azolla to another safe place to dry, grind and burn, and finally landfilling the obtained product in a uranium tailing warehouse for concentrated treatment. By using the method of the invention, the uranium content of the wastewater which contains 1.25-10mg / L of uranium can be reduced by 60-90%. The method has simple operation and management, high repairing efficiency, low cost, small environmental risk and good environmental benefit, social benefit and economic benefit.

Description

technical field [0001] The invention relates to the technical field of repairing uranium-contaminated water bodies, and relates to a complete set of technologies for quickly removing uranium pollution in water bodies by planting floating water ferns Azolla imbricata (Roxb.) . Background technique [0002] Uranium and its compounds are one of the indispensable and important raw materials in the nuclear industry. With the continuous development of the global atomic energy industry, the types and quantities of radioactive waste water produced in the process of uranium mining, smelting and decommissioning nuclear facilities are increasing. The potential threats to human health and the natural ecological environment are becoming more and more serious, and people have put forward higher requirements for the treatment of radioactive wastewater. In the treatment of radioactive wastewater, especially uranium-containing wastewater, the main treatment methods and technologies include c...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F101/20
CPCY02W10/10
Inventor 丁德馨李广悦胡南刘玉龙吴彦琼王永东谢红艳殷杰胡劲松刘洋马少维
Owner NANHUA UNIV
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