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Method for repairing uranium polluted water body

A technology for uranium pollution and water bodies, which is applied in the field of restoration of uranium-polluted water bodies, can solve problems such as those that have not been widely used, and achieve the effects of no secondary pollution, high restoration efficiency and low cost.

Inactive Publication Date: 2015-09-23
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of the treatment of uranium-containing wastewater, many experimental studies and practices have been carried out at home and abroad, and almost all the treatment methods and technologies in the field of water treatment have been tried, mainly physical and chemical methods, mainly including chemical precipitation, membrane separation, ion Exchange, evaporative concentration, and activated carbon adsorption methods, in addition, electrodialysis, electrophoresis, reverse osmosis, soil infiltration, flotation, foam separation, redox and other methods can be used to treat radioactive wastewater, but due to the treatment technology and actual operation process There are many problems to be solved in , and it has not been widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The initial concentration in uranium-containing wastewater is C 0 =50mg / L, cell concentration C b Under the condition of =0.3g / L, put live bacteria into the uranium-containing wastewater with pH of 3, 4, 5, 6, 7 and 8 respectively. After 60 minutes of treatment, the content of uranium in the water was detected respectively. When the pH value was 6, the removal rate and removal amount of uranium both reached the maximum, which were 81.2% and 135.3mg / g respectively, which had a good removal effect.

Embodiment 2

[0028] When the initial concentration of uranium-containing wastewater is 50mg / L, the bacterial cell concentration C b = 0.3g / L, adjust its pH to 6.0, and detect the content of uranium in the water after the treatment time is 5, 15, 30, 60, 120 and 180min respectively. The maximum removal rate reached 81.5% when the treatment time was 60 minutes, and then it was in a dynamic equilibrium process.

Embodiment 3

[0030] In the case of pH=6, maintain the cell concentration C b = 0.3g / L, put live bacteria into water bodies with initial uranium concentrations of 5, 10, 20, 50, 80 and 100 mg / L, respectively, and detect the uranium content in the water after 60 minutes of treatment. The bacterium has a high removal rate at low concentration, and the removal rate is still as high as 82.2% when the initial concentration is 50mg / L.

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PUM

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Abstract

The invention discloses a method for repairing a uranium polluted water body by utilizing facultative marine microorganisms. According to the method, bacteria are utilized for biological reduction effect for U(VI) by putting living Pseudomonas monteilii in the uranium polluted water body so as to reach the effect of removing the U(VI) in the water body. The removal rate of uranium in U(VI)-containing waste water with the concentration of 0-100 mg / L can reach more than 80% through putting one time; and the method disclosed by the invention has the advantages of simple processing steps, convenient material taking, low cost, environmental protection, high repair efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of remediation of uranium-polluted water bodies, and relates to a complete set of technologies for remediating uranium pollution in water bodies through facultative marine microorganism Pseudomonas monsonii screened from deep-sea surface sediments. Background technique [0002] Uranium is a radioactive heavy metal element, which can release alpha rays and cause radioactive radiation damage to the human body. Uranium-containing wastewater is extremely harmful to the ecological environment and human health. If it is allowed to be discharged into the environment, it will cause extremely serious consequences. The harmfulness of radioactive wastewater is mainly caused by the radionuclides contained in it, which will cause various damage and pathogenic effects on organisms and human body. In terms of the treatment of uranium-containing wastewater, many experimental studies and practices have been carried out at h...

Claims

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Application Information

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IPC IPC(8): G21F9/18
CPCG21F9/18
Inventor 李浩然袁飞
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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