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Method for water disinfection and degradation of iodinated contrast agent in water

A contrast agent and iodine technology, which is applied in chemical instruments and methods, reduced water/sewage treatment, water/sludge/sewage treatment, etc., to achieve effective degradation, wide application range, and cost savings

Inactive Publication Date: 2020-03-06
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, medical wastewater contains a large number of pathogenic bacteria, which must be disinfected and discharged only after reaching the standard

Method used

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  • Method for water disinfection and degradation of iodinated contrast agent in water
  • Method for water disinfection and degradation of iodinated contrast agent in water
  • Method for water disinfection and degradation of iodinated contrast agent in water

Examples

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Embodiment 1

[0024] This embodiment is three different methods for water disinfection and degradation of iodine contrast agents in water, the first is a method of water disinfection and degradation of iodine contrast agents in water according to the present invention, and the second method is when processing Only copper-containing inorganic salts are added alone, and the third method is to only add a reducing agent during treatment, and then detect the concentration of iodine contrast agent on the medical wastewater treated by the three methods.

[0025] The first method: a method for disinfecting water and degrading an iodized contrast agent in water according to the present invention, the method is as follows: in medical waste water to be tested (containing an iodized contrast agent with a concentration of 5 μM) whose pH is 7, add an iodized contrast agent containing Copper inorganic salt copper sulfate 0.1mM and reducing agent sulfite 2mM, and stirred for 0.5min, mixed evenly.

[0026] ...

Embodiment 2

[0031] The present embodiment is the method for disinfecting water provided by the present invention and degrading an iodine contrast agent in water. 0.1 mM copper-containing inorganic salt copper nitrate and 2 mM reducing agent nitrite were added to the iodine contrast agent with a concentration of 5 μM, and stirred for 0.5 min to mix well.

[0032] The concentration of the iodine contrast agent in the pharmaceutical wastewater to be tested (containing the iodine contrast agent with a concentration of 5 μM) at a pH of 4-8 (4, 5, 6, 7, 8) after 60 minutes of treatment by the above method was detected by a conventional method.

[0033] Test results such as figure 2 As shown, in the medical wastewater to be tested (containing the iodine contrast agent with a concentration of 5 μM) at a pH of 4-8 (4, 5, 6, 7, 8), the concentration of the iodine contrast agent treated by the above method The drop rate is between 21% and 97%.

Embodiment 3

[0035] This embodiment is the method for disinfecting water and degrading iodine contrast agents in water provided by the present invention. The method is as follows: to multiple portions of medical wastewater to be tested (containing iodine contrast agents at a concentration of 5 μM) with a pH of 7, respectively add Reducing agent ascorbic acid 2mM, then add copper-containing inorganic salt copper chloride 2mM, 0.1mM, 0.05mM, 0.04mM, 0.02mM respectively, wherein the molar ratio of copper-containing inorganic salt copper chloride and reducing agent ascorbic acid is 1:1-100 (1:1, 1:20, 1:40, 1:50, 1:100), and stir for 0.5min, mix well.

[0036] The concentration degradation rate of the iodine contrast agent in the multiple portions of medical wastewater (containing the iodine contrast agent at a concentration of 5 μM) with a pH of 7 60 min after the treatment with the above method was detected by a conventional method.

[0037] Test results such as image 3 As shown, in the ph...

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Abstract

Belonging to the field of water treatment application, the invention relates to a method for water disinfection and degradation of an iodinated contrast agent in water. The method for water disinfection and degradation of an iodinated contrast agent in water includes: adding a copper-containing inorganic salt or copper oxide and a reducing agent into to-be-detected water, and mixing the substancesuniformly. The invention provides the method for synchronously realizing disinfection of pharmaceutical wastewater and degradation of an iodinated contrast agent in pharmaceutical wastewater, the method solves the problem of poor degradation effect of conventional biological treatment method on an iodinated contrast agent, realizes effective degradation of the iodinated contrast agent, and also achieves the effect of effectively killing pathogenic bacteria in the pharmaceutical wastewater.

Description

technical field [0001] The invention relates to a method for disinfecting water and degrading an iodine contrast agent in water, belonging to the field of water treatment applications. Background technique [0002] Because iodine contrast agents are widely used in medical imaging of the human body, a large amount of iodine contrast agents enter medical wastewater. The iodine contrast agent is very stable, and its degradation effect is not good by conventional biological treatment methods; it is difficult to effectively degrade it even by advanced treatment processes. Although there is no research to prove that iodine contrast agents can directly endanger human health, they can be converted into iodo organic by-products such as methyl iodide and iodoacetic acid during the metabolic process. Iodo organic by-products are a species of higher geno and cytotoxicity than chlorinated and brominated organic by-products and are therefore closely watched by the water treatment industr...

Claims

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Application Information

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IPC IPC(8): C02F1/50C02F1/70C02F101/36
CPCC02F1/50C02F1/70C02F2101/36
Inventor 杨兢欣王川王平山
Owner GUANGZHOU UNIVERSITY
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