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Ion exchange resin suitable for petrochemical wastewater treatment and preparation method thereof

A technology of ion exchange resin and petrochemical wastewater, applied in ion exchange, cation exchange, ion exchange water/sewage treatment, etc., can solve problems such as poor conductivity, weak adsorption capacity, and small exchange capacity, and reduce regeneration voltage and energy consumption , Conductivity improvement, and the effect of improving performance

Active Publication Date: 2022-03-22
NINGBO POLYTECHNIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional strong-acid cation exchange resins have strong adsorption capacity and excellent conductivity, but are difficult to regenerate and have small exchange capacity; conventional weak-acid cation exchange resins are easy to regenerate and have large exchange capacity, but weak adsorption capacity and poor conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 5 parts of graphene to 120 parts of styrene for 2 hours for ultrasonic oscillation, then add 4 parts of graphene, and ultrasonically vibrate for 1 hour to obtain a suspension. Add 30 parts of graphene / styrene suspension, 120 parts of divinylbenzene, 120 parts of polyvinyl alcohol, 5 parts of benzoyl peroxide, 20 parts of zinc chloride, and 200 parts of toluene into pure water at 50°C and stir evenly Form a mixed liquid, heat the mixed liquid to 80°C and then keep it warm for suspension polymerization reaction. After the heat preservation is over, cool it down to 40°C, wash with water, filter, and dry to obtain graphene composite copolymerized white balls with a particle size of 0.5mm;

[0025] (2) Phosphonylate the graphene composite copolymerized white balls and condensing agent at 150°C at a volume ratio of 1:2. The condensing agent is triethyl phosphite. After the reaction is completed, cool down to 30°C and wash with water until neutral Afterwards, the phosp...

Embodiment 2

[0028] (1) Firstly add 10 parts of graphene to 110 parts of styrene and ultrasonically vibrate for 2 hours, then add 5 parts of graphene and ultrasonically vibrate for 1 hour to obtain a suspension. Add 10 parts of graphene / styrene suspension, 150 parts of divinylbenzene, 150 parts of polyvinyl alcohol, 8 parts of benzoyl peroxide, 30 parts of zinc chloride, and 300 parts of toluene into pure water at 60°C and stir evenly Form a mixed liquid, heat the mixed liquid to 120°C and then keep it warm for suspension polymerization reaction. After the heat preservation is over, cool it down to 40°C, wash with water, filter, and dry to obtain graphene composite copolymerized white balls with a particle size of 0.5mm;

[0029] (2) Phosphonylate the graphene composite copolymerized white balls and condensing agent at 180°C at a volume ratio of 1:6. The condensing agent is triethyl phosphite. After the reaction is completed, cool down to 30°C and wash with water until neutral Afterwards, ...

Embodiment 3

[0032] (1) Add 5 parts of graphene to 100 parts of styrene for 2 hours for ultrasonic oscillation, then add 3 parts of graphene, and ultrasonically oscillate for 1 hour to obtain a suspension. Add 10 parts of graphene / styrene suspension, 100 parts of divinylbenzene, 50 parts of polyvinyl alcohol, 3 parts of benzoyl peroxide, 10 parts of zinc chloride, and 150 parts of toluene into pure water at 60°C and stir evenly Form a mixed liquid, heat the mixed liquid to 120°C and then keep it warm for suspension polymerization reaction. After the heat preservation is over, cool it down to 40°C, wash with water, filter, and dry to obtain graphene composite copolymerized white balls with a particle size of 0.5mm;

[0033] (2) Phosphonylate the graphene composite copolymerized white balls and condensing agent at 180°C at a volume ratio of 1:1. The condensing agent is triethyl phosphite. After the reaction is completed, cool down to 30°C and wash with water until neutral Afterwards, the pho...

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Abstract

The invention discloses ion exchange resin suitable for petrochemical wastewater treatment and a preparation method thereof, and belongs to the field of ion exchange resin preparation. Graphene composite copolymerization white balls and a condensing agent are subjected to a phosphorylation reaction at the temperature of 80-200 DEG C, a phosphorylation product obtained after cooling and acid are subjected to an acidification hydrolysis reaction at the temperature of 50-180 DEG C, cooling is conducted to the room temperature after the reaction is completed, and then the ion exchange resin obtained after aftertreatment is suitable for treating petrochemical wastewater through a membrane-free electrodeionization system. The resin is excellent in comprehensive performance, and has relatively good processing performance, electric regeneration performance and conductivity. Compared with the conventional weak acid resin, the treatment performance and the conductivity are greatly improved; compared with conventional strong acid resin, the exchange capacity is large, and the electric regeneration performance is improved.

Description

technical field [0001] The invention belongs to the field of ion exchange resin preparation and relates to a preparation method of ion exchange resin used for petrochemical wastewater treatment. Background technique [0002] The petrochemical industry is a pillar industry of the national economy. It needs to use catalysts to improve the reaction efficiency in the production process, so it will produce a large amount of wastewater containing heavy metals. Improper treatment of these wastewater will pose a great threat to environmental safety. On the other hand, heavy metals are a kind of precious resources. It is of great practical significance to realize the recovery of heavy metals and the reuse of wastewater while treating wastewater. [0003] Membraneless electrodeionization technology is a very promising advanced wastewater treatment technology, which can realize heavy metal recovery and wastewater reuse. The technology is divided into two stages of treatment and regene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/17C02F1/42C08F212/08C08F212/36C08F8/40
CPCB01J39/17C02F1/42C08F212/08C08F212/36C08F8/40C02F2001/425
Inventor 申小兰俞均益史海波斯文婷
Owner NINGBO POLYTECHNIC