Temperature sensitive type chelate adsorption resin and preparation method thereof and method for treating wastewater by using temperature sensitive type chelate adsorption resin

A temperature-sensitive, chelating adsorption technology, applied in the direction of adsorption water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as constraints

Active Publication Date: 2019-10-11
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above problems have restricted the application of the adsorption resin method in the treatment of printing and dyeing wastewater containing heavy metal ions and highly toxic and refractory naphthalene substances.

Method used

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  • Temperature sensitive type chelate adsorption resin and preparation method thereof and method for treating wastewater by using temperature sensitive type chelate adsorption resin
  • Temperature sensitive type chelate adsorption resin and preparation method thereof and method for treating wastewater by using temperature sensitive type chelate adsorption resin
  • Temperature sensitive type chelate adsorption resin and preparation method thereof and method for treating wastewater by using temperature sensitive type chelate adsorption resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] At room temperature, a premixed water phase was added, and the composition was 292.3 g of deionized water, 9.0 g of sodium chloride, 0.2 g of polyvinyl alcohol, and 0.3 mg of methylene blue. Add the premixed oil phase, and the composition is 40g of divinylbenzene, 10g of ethylstyrene, 25.0g of toluene, 25.0g of 3# white oil, and 0.5g of benzoyl peroxide. Start stirring, raise the temperature to 85°C, keep the temperature constant for 6 hours, wash with water, extract the porogen, and dry to obtain porous white balls containing suspended double bonds, with a particle size distribution of 400-1200μm and a specific surface area of ​​750m 2 / g, the average pore diameter is 7.0nm, and the pore volume is 1.3mL / g.

[0059]Take the above 50.0 g of porous white balls containing pendant double bonds and place them in 150 mL of tetrahydrofuran, add 15.0 g of N-isopropylacrylamide, 15.0 g of 3-ethylene-dopamine, and 0.8 g of azobisisobutyronitrile, and replace by bubbling with nitr...

Embodiment 2

[0073] At room temperature, the premixed water phase was added, and the composition was 654.3 g of deionized water, 73.1 g of sodium chloride, 3.6 g of gelatin, and 7.3 mg of methylene blue. Add the premixed oil phase, and the composition is 50.0 g of trivinylbenzene, 40.9 g of styrene, 136.4 g of xylene, 136.4 g of 200# solvent naphtha, and 1.8 g of azobisisobutyronitrile. Start stirring, raise the temperature to 65°C, keep the temperature for 12 hours, wash with water, extract the porogen, and dry to obtain porous white balls containing suspended double bonds, with a particle size distribution of 200-800 μm and a specific surface area of ​​800 m 2 / g, the average pore diameter is 4.0nm, and the pore volume is 2mL / g.

[0074] Take the above 50.0 g of porous white balls containing dangling double bonds and place them in 500 mL of N,N-dimethylformamide, add 40.0 g of N-n-propyl acrylamide, 5.0 g of 3,5-divinyl-dopamine, peroxide Dibenzoyl 4.8g, argon gas bubbling for 20min to ...

Embodiment 3

[0077] At room temperature, the premixed water phase was added, and the composition was 473.0 g of deionized water, 4.8 g of sodium chloride, 47.8 mg of hydroxypropyl methylcellulose, and 0.05 mg of methylene blue. Add the premixed oil phase, and the composition is 50.0 g of divinyltoluene, 21.4 g of chlorinated styrene, 11.9 g of ethylbenzene, 11.9 g of C20 alkanes, and 0.36 g of dibenzoyl peroxide. Start stirring, raise the temperature to 95°C, keep the temperature constant for 4 hours, wash with water, extract the porogen, and dry to obtain porous white balls containing suspended double bonds, with a particle size distribution of 600-2000 μm and a specific surface area of ​​200m 2 / g, the average pore diameter is 40.0nm, and the pore volume is 0.3mL / g.

[0078] Take the above 50.0g porous white balls containing pendant double bonds and place them in 50mL of nitrobenzene, add 5.0g of N,N-diethylacrylamide, 40.0g of 5-ethylene-dopamine, and 0.1g of tert-butyl peroxypivalate ...

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Abstract

The invention discloses a temperature sensitive type chelate adsorption resin and a preparation method thereof and a method for treating wastewater by using the temperature sensitive type chelate adsorption resin. The preparation method comprises the following steps that (1), porous white balls containing hanging double bonds are mixed with a swelling agent, a temperature sensitive type monomer, adopamine monomer and an initiator, and swelling is conducted; (2), the mixed system is heated in an inert gas environment, polymerization of the temperature sensitive type monomer, the dopamine monomer and double bonds in the porous white balls containing the hanging double bonds is initiated, under the action of the initiator, the dopamine monomer is subjected to self-crosslinking to form polydopamine, and the temperature sensitive type chelate adsorption resin is obtained. The resin is specially suitable for treating printing and dyeing wastewater which contains heavy metal ions and high-toxicity and nonbiodegradable naphthalene matter. The resin adsorbs and recycles the heavy metal ions and the naphthalene matter in the wastewater, the treated wastewater is discharged to reach the standards, and a feasible solution is provided for zero emission of the industrial wastewater containing the heavy metal ions and the naphthalene matter.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, specifically relates to a temperature-sensitive chelating adsorption resin and a preparation method thereof, and also relates to using the resin to treat waste water, especially one containing heavy metal ions and highly toxic and refractory naphthalene substances at the same time The method of printing and dyeing wastewater. Background technique [0002] With the increasingly stringent national environmental protection policies and regulations and the continuous enhancement of social environmental protection awareness, industrial wastewater treatment and recycling processes have received widespread attention. Among them, printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, and complex components. Among them, naphthalene substances and heavy metal ions are more difficult to treat. Naphthalene substances in printing and dyeing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/261B01J20/30C02F1/285C02F2101/20C02F2101/30
Inventor 欧洋赵伟国孙家宽华卫琦
Owner WANHUA CHEM GRP CO LTD
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