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Method for treating acrylic-acid-containing waste water by microwave radiation technique

A technical treatment and microwave radiation technology, which is applied in water/sewage treatment, chemical instruments and methods, textile industry wastewater treatment, etc., can solve the problems of high cost of acrylic acid wastewater, reduced reaction time, and toxic intermediate products, etc., to shorten the synthesis time , reduce pollution and reduce costs

Inactive Publication Date: 2019-03-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for treating acrylic acid-containing wastewater by using microwave radiation technology, which overcomes the defects of the existing acrylic acid wastewater treatment methods such as complexity, environmental pollution, toxic intermediate products, long treatment cycle, high cost, and low efficiency. The method utilizes microwave radiation new technology to treat wastewater containing acrylic acid, and synthesizes soaping agent through polymerization reaction, which can not only solve the problems of high cost and low efficiency in traditional treatment of acrylic acid wastewater, but also greatly reduce the reaction time by using microwave to synthesize soaping agent, Energy saving and environmental protection, combining the treatment of acrylic acid wastewater with the preparation of soaping agent to realize the recycling and reuse of wastewater

Method used

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  • Method for treating acrylic-acid-containing waste water by microwave radiation technique
  • Method for treating acrylic-acid-containing waste water by microwave radiation technique
  • Method for treating acrylic-acid-containing waste water by microwave radiation technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Utilize microwave method to treat the waste water containing acrylic acid to prepare reactive dye soaping agent, concrete steps are:

[0035] 100g of waste water containing acrylic acid (the content of acrylic acid and its oligomers in the waste water is about 10%) is added in the four-necked flask, and another 1.2 g of initiator ammonium persulfate is dissolved in water, and the mass fraction is 10%. solution, another 20 g of acrylic acid monomers were placed in the dropping funnel; then the reaction condition parameters of the microwave reactor were set as follows: the microwave power was 500W, the reaction time was 20min, and the reaction temperature was 50°C. After temperature, start to add the initiator ammonium persulfate solution and acrylic acid monomer drop by drop. After the heating time ends, when the temperature drops below 50°C, add dropwise an aqueous NaOH solution with a mass fraction of 40% to the resulting product, adjust the pH to 7, and finally obtain...

Embodiment 2

[0037] Utilize microwave method to treat the waste water containing acrylic acid to prepare reactive dye soaping agent, concrete steps are:

[0038] 100g of waste water containing acrylic acid (the content of acrylic acid and its oligomers in the waste water is about 17%) is added in the four-necked flask, and another 1.2g of initiator ammonium persulfate is dissolved in water, and the mass fraction is 10%. The solution, another 20g of acrylic acid monomer is taken, respectively placed in the dropping funnel; then the reaction condition parameters of the microwave reactor are set as follows: the microwave power is 500W, the reaction time is 30min, and the reaction temperature is 50°C. After the temperature was fixed, the initiator ammonium persulfate solution and acrylic acid monomer were added dropwise. After the heating time ends, when the temperature drops below 50°C, add dropwise an aqueous NaOH solution with a mass fraction of 40% to the resulting product, adjust the pH t...

Embodiment 3

[0040] Utilize microwave method to treat the waste water containing acrylic acid to prepare reactive dye soaping agent, concrete steps are:

[0041] 100g of waste water containing acrylic acid (the content of acrylic acid and its oligomers in the waste water is about 17%) is added in the four-necked flask, and another 1.2g of initiator ammonium persulfate is dissolved in water, and the mass fraction is 10%. of the solution, another 20 g of acrylic acid monomers were placed in the dropping funnel; the reaction condition parameters of the microwave reactor were then set as follows: the microwave power was 500W, the reaction time was 20min, and the reaction temperature was 60°C. After the temperature was fixed, the initiator ammonium persulfate solution and acrylic acid monomer were added dropwise. After the heating time ends, when the temperature drops below 50°C, add dropwise an aqueous NaOH solution with a mass fraction of 40% to the resulting product, adjust the pH to 7, and ...

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Abstract

The invention relates to a method for treating acrylic-acid-containing waste water by the microwave radiation technique, including the steps of pre-treating acrylic-acid-containing waste water, placing the pre-treated waste water in a four-neck flask, adding acrylic acid monomer and an initiator on the condition of microwave radiation, reacting for a certain time, cooling to the room temperature after the reaction is stopped, and regulating the pH through aqueous alkali; the product can be used as a reactive dye soaping agent. The method is simple in process, realizes recycling of waste waterand accords with the concept of ecological environmental protection; the soaping agent has excellent performance.

Description

technical field [0001] The invention belongs to the field of waste water treatment methods, in particular to a method for treating waste water containing acrylic acid using microwave radiation technology. Background technique [0002] Acrylic acid has a carboxyl structure and a double bond structure, and the carboxyl group helps it to generate acrylate through esterification; the double bond makes it possible to polymerize. Acrylic acid can be polymerized into sodium polyacrylate, which is a raw material for the production of various thickeners, dispersants, and water-absorbent materials. Acrylic acid can participate in the esterification reaction and can be produced as methyl acrylate, etc. Most of these products are coatings. The process of producing acrylic acid needs to go through processes such as separation and refining, and these processes require a large amount of water to absorb the oxidation products in the reaction process, so the production of acrylic acid and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C08F120/06C08F2/46D06P5/08C02F101/34C02F103/30
CPCC02F1/00C02F1/30C02F2101/34C02F2103/30C08F2/46C08F120/06D06P5/08
Inventor 沈丽朱泉陆佳锦高自港
Owner DONGHUA UNIV
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