Preparation method of fiber membrane used for treating dye wastewater

A technology of dye wastewater and manufacturing methods, which is applied in the field of fiber membrane manufacturing, can solve problems such as explosive aggregation, and achieve the effects of low production cost, easy salvage and recovery, and fast and efficient complexation of metal ions

Active Publication Date: 2016-09-28
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polymers containing carboxylic acid groups, such as polyacrylic acid (PAA), are non-toxic and can complex metal ions. However, when PAA is synthesized by solution polymerization, the AA monomer is extremely explosive, and as a polyelectrolyte, it is difficult to synthesize PAA spun into fibers by electrospinning technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Weigh 70g of acrylic acid, put it in a suitable beaker, weigh 30g of hydroxyethyl methacrylate, and add it to the above beaker, weigh 0.5g of benzoyl peroxide, and add it to the above beaker , stir with a glass rod until benzoyl peroxide is completely dissolved in the mixed solution of acrylic acid and hydroxyethyl methacrylate, after that, weigh 100g of deionized water and add it to the above-mentioned acrylic acid, hydroxyethyl methacrylate , benzoyl peroxide, and stir to make it evenly mixed, then move the above solution to the polymerization kettle, start stirring, feed nitrogen to exhaust the residual air in the polymerization kettle, and raise the temperature of the polymerization kettle to 85 Start timing at ℃, after reacting for 2.5h, take out the colloidal product, wash it three times with deionized water to remove unreacted monomers and oligomers, in order to prevent the coloring of the polymerized product, and dry it in a vacuum dryer at 80℃ for 96h Finally, p...

Embodiment 2

[0041] Present embodiment technological process and parameter are identical with embodiment 1, and only the ratio of deionized water and ferrous chloride is changed, and deionized water becomes 70g by 90g in embodiment 1, and ferrous chloride is changed from 90g in embodiment 1 10g becomes 30g.

[0042] Take 10ml concentration of 20mg / L methylene blue aqueous solution, add 0.5ml hydrogen peroxide, pass through 1min ozone, after 90 minutes, the removal efficiency of methylene blue dye is 8%; take 10ml concentration of 20mg / L methylene blue aqueous solution, add 0.5ml hydrogen peroxide, pass Put 0.002g of fiber membrane into the above solution after injecting ozone for 1min, and the removal efficiency of methylene blue dye reaches 100% after 10 minutes.

Embodiment 3

[0044] Present embodiment technological process and parameter are identical with embodiment 1, only the ratio of deionized water and ferrous chloride is changed, and deionized water becomes 95g by 90g in embodiment 1, and ferrous chloride is changed from 90g in embodiment 1 10g becomes 5g.

[0045] Take 10ml concentration of 20mg / L methylene blue aqueous solution, add 0.5ml hydrogen peroxide, pass through 1min ozone, after 90 minutes, the removal efficiency of methylene blue dye is 8%; take 10ml concentration of 20mg / L methylene blue aqueous solution, add 0.5ml hydrogen peroxide, pass Put 0.002g of fiber membrane into the above solution after injecting ozone for 1min, and the removal efficiency of methylene blue dye reaches 50% after 90 minutes.

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PUM

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Abstract

The invention discloses a preparation method of a fiber membrane capable of catalyzing oxidizing agents to rapidly and efficiently decompose various dyes through oxidation, belonging to the technical field of fiber membrane preparation. The preparation method is characterized by firstly synthesizing a copolymer with excellent electrostatic spinnability by adopting a precipitation polymerization process, then preparing a fiber membrane through electrostatic spinning and carrying out ion crosslinking and finally completing preparation of a complex fiber membrane in a soluble ferrous salt solution. The fiber membrane has the characteristic of catalyzing the oxidizing agents to decompose the dyes through oxidation. Compared with powdery or granular components, which have the catalytic function, in a Fenton reagent, the fiber membrane has the advantages of high catalytic activity, high dye treatment speed, easiness in recovery from water bodies, low possibility of causing secondary pollution, reusability and the like, also serves as a filter medium to carry out purification treatment on the dye wastewater containing the oxidizing agents, such as H2O2 and O3, and completes the pollutant interception and oxidative decomposition processes by one step. Compared with existing composite Fenton catalytic membranes, the fiber membrane has the advantages of short preparation flow, low cost, low energy consumption and the like, so the fiber membrane further meets the industrial practical requirements.

Description

technical field [0001] The invention relates to a manufacturing technology of a fiber membrane, in particular to a manufacturing method of a fiber membrane capable of catalyzing an oxidant to rapidly and efficiently oxidize and decompose a variety of dyes. The manufacturing method utilizes precipitation polymerization, electrospinning, ion crosslinking and iron Ion and other technologies, the obtained fiber membrane can be used for dye wastewater treatment. Background technique [0002] With the development of dye production and printing and dyeing industry, the discharge of dye industrial wastewater has increased dramatically. According to the survey, about 160 million cubic meters of dye wastewater is discharged into the water environment in China every year. Dye wastewater has the characteristics of large chroma, high content of organic pollutants, complex components, water quality changes, high biological toxicity, and difficult biochemical degradation, and is developing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/28D06M11/56D06M11/65D06M11/155D06M11/17C08F220/06C08F222/06C08F220/28D01F6/36D04H1/728D04H1/4282B01J35/06B01J31/06B01J31/22D06M101/26
CPCD01F6/36D04H1/4282D04H1/728D06M11/155D06M11/17D06M11/28D06M11/56D06M11/65C08F220/06B01J31/06B01J31/2213B01J31/2239D06M2101/26B01J35/59C08F220/281
Inventor 徐乃库鲁玉瑶
Owner TIANJIN POLYTECHNIC UNIV
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