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Printing and dyeing sewage decoloring flocculating agent based on visible light polymerization and preparation method thereof

A decolorizing flocculant, a technology for printing and dyeing sewage, applied in chemical instruments and methods, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. damage and other problems, to achieve the effects of energy saving, high salt tolerance, and short polymerization time

Active Publication Date: 2018-12-18
义乌市鹏之友新材料研究所有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, if the usual ultraviolet light polymerization technology is used, ozone will be generated, which will affect the environment and health, and will also cause damage to functional monomers during the polymerization process. Therefore, the use of visible light polymerization technology is a possible way to solve the problem

Method used

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  • Printing and dyeing sewage decoloring flocculating agent based on visible light polymerization and preparation method thereof
  • Printing and dyeing sewage decoloring flocculating agent based on visible light polymerization and preparation method thereof
  • Printing and dyeing sewage decoloring flocculating agent based on visible light polymerization and preparation method thereof

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preparation example Construction

[0060] A preparation method of a printing and dyeing sewage decolorizing flocculant based on visible light polymerization, including the following steps:

[0061] 1) Dissolve the monomers AM, AE1, AE2 and AE3 in water according to the pre-designed ratio, add the pre-dissolved visible light sensitizing dye or pre-dissolved free radical initiator and visible light sensitizing dye, and transfer to the visible light photoreactor In the process, pass nitrogen gas for 30-50min.

[0062] 2) Irradiate with an LED lamp matching the wavelength of the dye for 20-40 minutes. After the temperature no longer rises, keep irradiating for 20-40 seconds. The polymerization reaction is completed and the colloid is obtained.

[0063] 3) The obtained colloid is granulated, dried at 40-70°C, and the finished product is obtained after grinding and sieving.

[0064] Optionally, in step 1), the free radical initiator is a supramolecule composed of water-soluble azo compounds, modified benzophenone wa...

Embodiment 1

[0074] (1) 720g (10.0mol, 40%) acrylamide, 1950g (10.0mol, 40%) acryloyloxyethyltrimethyl ammonium chloride, 1423g (5mol, 20%) acryloyloxyethyl dimethyl P-methyl benzyl ammonium chloride, be dissolved in 17 liters of deionized water, after treating to dissolve completely, add initiator azobisisobutyl ether hydrochloride 1.35g and the squarylium dye 6.8g of above-mentioned code name SQ1, import volume is In a 20-liter photoreactor, pass nitrogen gas at 25°C for 40 minutes, and then irradiate with an LED light source with a wavelength of 650nm for 26 minutes. The thermometer shows that the temperature is 43 degrees. After continuing to irradiate for 30 seconds, the temperature begins to drop, and the light is stopped. Remove the colloid. Use a colloid granulator to granulate with a particle size of 3-8mm. Put it into a 65°C oven, dry it completely after three hours, grind and sieve to obtain the cationic polymer flocculant powder product.

[0075] (2) Take 0.1g of the above-me...

Embodiment 2

[0077] (1) 360g (5mol, 16.7%) of acrylamide, 3100g (15mol, 50%) of methacryloyloxyethyltrimethyl ammonium chloride, 2705g (10mol, 33.3%) of acryloyloxyethyl di-p-benzyl Hydroxyl ammonium chloride, be dissolved in 25 liters of deionized water, after treating to dissolve completely, add initiator BPQ0.8g and the cycloalkane ketone dyestuff 1.80g of above-mentioned code name CP-1, import volume is in the photoreactor of 30 liters, in Nitrogen was passed for 40 minutes at 25°C, and then irradiated with an LED light source with a wavelength of 560nm for 22 minutes. The thermometer showed a temperature of 48°C. After continuing to irradiate for 30 seconds, the temperature began to drop. Stop the light and take out the colloid. Use a colloid granulator to granulate with a particle size of 3-8mm. Put it into a 60°C oven, dry it completely after three hours, grind and sieve to obtain the cationic polymer flocculant powder product.

[0078] (2) Take 0.1g of the above-mentioned cationic...

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Abstract

The invention relates to the field of sewage processing, and discloses a printing and dyeing sewage decoloring flocculating agent based on visible light polymerization and a preparation method thereof. The flocculating agent is obtained by ternary or quaternary copolymerization, has good solubility and strong flocculation ability, has the ability to efficiently remove dyes in printing and dyeing sewage, and has high salt tolerance; The flocculating agent can be added as appropriate without re-dispersing of a flocculate. The method of the invention adopts visible light polymerization, the process does not cause ozone pollution, and the visible light selects LED irradiation matched with a sensitized dye wavelength, and energy consumption during a production process is saved; and the reactionprocess has the shorter polymerization time and higher efficiency than the existing polymerization process.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a printing and dyeing sewage decolorizing flocculant based on visible light polymerization and a preparation method thereof. Background technique [0002] Sewage from the printing and dyeing industry is relatively difficult to treat. It has a long treatment cycle, high cost, large amount of sludge, and serious odor emissions during the treatment process. It is difficult for the wastewater after biochemical treatment to meet the discharge standards. The reason is that most of the dyes are toxic to microorganisms, and most of the microorganisms die in the process of dyeing and become sludge. So far, no effective solution has been found. Therefore, it is an important issue to develop new functional materials that can effectively remove dyes in printing and dyeing wastewater. [0003] Although cationic polyacrylamide is an efficient flocculant, the cationic polyacrylamide so far has ...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F103/30C02F101/30
Inventor 吴飞鹏黄武宁
Owner 义乌市鹏之友新材料研究所有限公司
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