A light-assisted porous copper bismuth acid activated persulfate treatment method

A technology for activating persulfate and copper bismuthate, which can be used in illumination water/sewage treatment, oxidized water/sewage treatment, chemical instruments and methods, etc., and can solve problems such as poor treatment effect

Active Publication Date: 2018-04-20
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0005] The present invention aims at the polluted water body containing coumarin, in order to solve the problem of poor treatment effect of existing conventional sewage, innovatively proposes a light-assisted porous copper bismuthate activated persulfate salt water treatment method, and the porous copper bismuthate catalyst The preparation and application conditions are described

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  • A light-assisted porous copper bismuth acid activated persulfate treatment method

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specific Embodiment approach 1

[0011] Specific embodiment one: the preparation method of the porous copper bismuth acid of this embodiment is: (1) preparation of precursor solution, the bismuth nitrate that quality is 0.01mol is dissolved in the nitric acid solution that 20mL concentration is 0.5mol / L, and continuous stirring makes Bismuth nitrate dissolves completely; In the above-mentioned solution, add the copper nitrate that quality is 0.005mol, keep stirring and make bismuth nitrate dissolve completely; Add polyvinylpyrrolidone 0.167g in the above-mentioned solution, keep stirring and make bismuth nitrate dissolve completely; (2) precipitation agent Preparation, adding 40.0 g of sodium hydroxide into 40 mL of water to form a sodium hydroxide solution with a concentration of 25.0 mol / L; (3) Precipitation, adding the precipitant in (2) dropwise to the precursor prepared in (1) In the body solution, a mixed precipitate is formed until the pH of the solution reaches 13.45; (4) Aging, the precipitate prepare...

specific Embodiment approach 2

[0014] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the application method of light-assisted porous copper bismuth acid activated persulfate decontamination technology in water treatment is as follows: urban domestic sewage passes through the grid-grit chamber-primary After the sedimentation tank-biochemical tank-secondary sedimentation tank is treated, the light-assisted porous copper bismuthate activates persulfate treatment, and then the water is discharged.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the application method of light-assisted porous copper bismuthate activated persulfate decontamination technology in water treatment is: industrial wastewater passes through the grid-grit chamber-primary sedimentation After the pool-biochemical pool-secondary sedimentation tank is treated, the light-assisted porous copper bismuthate activates persulfate treatment, and then the water is discharged.

[0016] The porous copper bismuthate catalyst prepared in this embodiment can remove more than 60% of coumarin by activating persulfate under light-assisted conditions, which is higher than that of simple ultraviolet light degradation, ultraviolet light activation of persulfate, light Copper bismuth acid activated persulfate can significantly improve the removal efficiency of coumarin, realizing the enhanced removal of coumarin in water.

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Abstract

The invention provides a construction and application method of light-assisted porous copper bismuth acid activated persulfate salt water treatment advanced oxidation technology, which belongs to the field of water treatment technology and environmental functional materials. Porous copper bismuthate can be in the shape of powder or granules, and bismuth nitrate, copper nitrate and polyvinylpyrrolidone are used as the main materials to prepare porous copper bismuthate materials with high specific surface area, which can improve the freedom of activated persulfate under light-assisted conditions. Based on the degradation ability of coumarin. The present invention aims at the poor removal effect of coumarin in existing conventional sewage treatment, proposes a novel porous copper bismuthate as a catalyst, and realizes its successful application in the persulfate system, which is a coumarin compound The removal technology provides a theoretical reference, and provides a scientific basis and technical support for ensuring water quality safety and improving the water quality environment.

Description

technical field [0001] The invention relates to water pollution control technology and an environmental functional material. Background technique [0002] Coumarin compounds are a class of aromatic compounds that widely exist in nature. They are distributed in many plants and spices, and also exist in metabolites of animals and microorganisms. Their core is a benzo-a-pyrone structure. According to the different substituents of the benzene ring and their positions, coumarins can be divided into simple coumarins, furanocoumarins, pyranocoumarins and other coumarins, etc., which are an important flavor enhancer and are widely used Used in light industries such as perfumes, cosmetics, and detergents. Coumarin compounds not only have antihypertensive and anticoagulant pharmacological effects on the human body, but also have harmful effects on the physiological toxicity of organisms. For example, some coumarin compounds can cause liver damage. With the increasing production, usa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/72B01J23/843
Inventor 齐飞董博男张钰婷徐冰冰
Owner BEIJING FORESTRY UNIVERSITY
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