Method for removing iodo-X-ray contrast medium in water

An X-ray and water-removing technology, which is applied in the field of removing iodine X-ray contrast agents in water, can solve problems such as difficult removal and human hazards, and achieve the effects of outstanding safety, good stability, and simple operation
CN109293103AInactive Publication Date: 2019-02-01SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIVERSITY OF ELECTRIC POWER
Publication Date
2019-02-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for removing an iodo-X-ray contrast medium in water. The method includes the steps: oxidant feeding, to be more specific, adding sodium persulfate into to-be-treatedwater until the concentration of sodium persulfate in the water reaches 23.8-71.4mg / L; ultraviolet irradiation, to be more specific, subjecting the to-be-treated water to ultraviolet irradiation for 5-10 minutes after oxidant feeding. Compared with the prior art, the method has advantages that high degradation efficiency is achieved, the concentration of the ICM (iodo-X-ray contrast medium) in thewater can be decreased by 87% or more, the method is slightly affected by pH (potential of hydrogen) changes, and reaction products are mainly sulfate ions and iodate ions and can be removed by simple coagulation, precipitation or membrane filtration, so that the method is a safe and stable drinking water treatment method.
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Description

technical field

[0001] The invention relates to a method for degrading contrast agents, in particular to a method for removing iodine X-ray contrast agents in water. Background technique

[0002] Due to the development and progress of society and industrial technology, the types and quantities of artificially synthesized organic substances continue to increase and are widely used. Among them, pharmaceuticals and personal care products (PPCPs) are the most widely used. According to incomplete statistics, there are more than 3,000 types of PPCPs. In recent years, with the improvement of detection technology, different concentrations of PPCPs have been detected in the environment of different countries and regions in the world, and many of them have been proved to be harmful substances with neurotoxicity and genotoxicity. Although the detected concentrations of these substances are very low and belong to trace organic substances, the harm to human body and environment cannot ...

Claims

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