Construction and application method of photoassisted porous copper bismuthate activated persulfate water treatment high-grade oxidation technology

A technology of activating persulfate and advanced oxidation technology, which is applied in the direction of light water/sewage treatment, oxidized water/sewage treatment, chemical instruments and methods, etc., and can solve the problems of poor treatment effect and so on

Active Publication Date: 2015-09-16
BEIJING FORESTRY UNIVERSITY
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the polluted water body containing coumarin, and in order to solve the problem of poor treatment effect of the existing conventional sewage, it innovatively proposes a light-ass

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Construction and application method of photoassisted porous copper bismuthate activated persulfate water treatment high-grade oxidation technology

Examples

Experimental program
Comparison scheme
Effect test

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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a construction and application method of a photoassisted porous copper bismuthate activated persulfate water treatment high-grade oxidation technology, and belongs to the field of water treatment technologies and environmental functional materials. The shape of porous copper bismuthate can be powder or particles, and a porous copper bismuthate material with a high specific surface area is prepared by using bismuth nitrate, copper nitrate and polyvinylpyrrolidone as main materials, so the coumarin degradation ability of free radicals generated in the activation process of persulfate under photoassisted conditions is improved. The novel porous copper bismuthate is provided as a catalyst to solve the problem of poor coumarin removal effect of present routine sewage treatment, realizes successful application in a persulfate system, provides theoretic reference for coumarin compound removal technologies, and provides scientific basis and technical support for water safety and water environment improvement.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F1/30C02F1/72B01J23/843
Inventor 齐飞董博男张钰婷徐冰冰
Owner BEIJING FORESTRY UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap