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Adsorbent resin and synthetic method thereof and method for treating wastewater

A technology for adsorbing resin and wastewater, applied in the fields of adsorbing water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of weak intermolecular force, small adsorption capacity, poor adsorption effect, etc., to overcome the removal of Incomplete, stable performance

Active Publication Date: 2020-04-28
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a kind of adsorption resin rich in polar groups, which overcomes the problem that ordinary polystyrene macroporous resins do not contain polar groups or only contain a small amount of Adsorption group, weak intermolecular force when adsorbing aldehydes leads to defects such as small adsorption capacity and poor adsorption effect

Method used

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  • Adsorbent resin and synthetic method thereof and method for treating wastewater
  • Adsorbent resin and synthetic method thereof and method for treating wastewater
  • Adsorbent resin and synthetic method thereof and method for treating wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Add α-amino-β-hydroxybutyric acid 88.0g and 0.0.53g methanesulfonic acid (the ratio is 0.6wt%) to the reactor equipped with stirring, thermometer, reflux condenser and N,N-dimethylformamide solution , heated to 60°C at a stirring speed of 200 rpm and an absolute pressure of 35kPa, and reacted for 1.5h. After the reaction was completed, 8.5 g of p-hydroxystyrene and 0.2 g of polymerization inhibitor 701 were added; the temperature was raised to 120° C. to continue the reaction for 2.0 h. After the reaction was completed, 9.7 g of deionized water was added to extract methanesulfonic acid to obtain hydroxystyrene with pendant amino groups.

[0084] The molecular weight distribution of hydroxystyrene with side amino groups measured by GPC is as follows, and the range of n corresponding to the molecular weight distribution is 2 to 19:

[0085] molecular weight 500-1500 1500—2500 content 32％ 68％

[0086] 56.8 g of p-chlorostyrene and 25.6 g of hydrazi...

Embodiment 2

[0091] Add α-amino-β-hydroxybutyric acid 61.5g and 0.5g methanesulfonic acid (ratio is 0.8wt%) in the reactor equipped with stirring, thermometer, reflux condenser, N,N-dimethylformamide solution, Heat to 80°C at a stirring speed of 250 rpm and an absolute pressure of 25kPa, and react for 2.0h. After the reaction was completed, 5.3 g of p-hydroxystyrene and 0.15 g of polymerization inhibitor 701 were added; the temperature was raised to 100° C. to continue the reaction for 1.5 h. After the reaction was completed, 6.7 g of deionized water was added to extract methanesulfonic acid to obtain hydroxystyrene with pendant amino groups.

[0092] The molecular weight distribution of hydroxystyrene with side amino groups measured by GPC is as follows, and the range of n corresponding to the molecular weight distribution is 2 to 19:

[0093] molecular weight 500-1500 1500—2500 content 26％ 74％

[0094] Add 77.3 g of p-chlorostyrene and 15.8 g of hydrazine hydrate...

Embodiment 3

[0099] Add α-amino-β-hydroxybutyric acid 57.3g and 0.6g (1.1wt%) methanesulfonic acid in the reactor equipped with stirring, thermometer, reflux condenser, N,N-dimethylformamide solution, at 250 Stirring speed at rev / min, heating to 70°C under 25kPa absolute pressure, and reacting for 1.5h. After the reaction was completed, 4.2 g of p-hydroxystyrene and 0.15 g of polymerization inhibitor 701 were added; the temperature was raised to 130° C. to continue the reaction for 2.5 h. After the reaction was completed, 8.0 g of deionized water was added to extract methanesulfonic acid to obtain hydroxystyrene with pendant amino groups.

[0100] The molecular weight distribution of hydroxystyrene with side amino groups measured by GPC is as follows, and the range of n corresponding to the molecular weight distribution is 2 to 19:

[0101] molecular weight 500-1500 1500—2500 content 30％ 70％

[0102] 19.3 g of p-chlorostyrene and 15.8 g of hydrazine hydrate were re...

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Abstract

The invention provides aldehyde adsorption resin and a preparation method and application thereof. Amino groups of the resin are rich in amino and hydrazino polar groups, the content of the amino groups is 10-20 times that of common modified macroporous resin, the amino groups and the hydrazino groups play a synergistic effect, a better removal effect on aldehydes is achieved, acid / alkali regeneration is easy, and the performance is stable. After the wastewater passes through the azeotropic tower and the stripping tower and is adsorbed by resin, an aqueous solution of which the COD is less than 1000mg / L and the total aldehyde is less than 500mg / L is obtained and can be subjected to biochemical treatment. According to the method, the wastewater treatment cost is effectively reduced, or organic matters in the wastewater are recycled, the waste gas emission is reduced, and economic and environment-friendly values are realized.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to an adsorption resin, a synthesis method thereof and a method for treating waste water. Background technique [0002] The production of methacrylic acid mainly includes acetone cyanohydrin method and isobutylene oxidation method. The acetone cyanohydrin method uses concentrated sulfuric acid as a catalyst and highly toxic hydrocyanic acid as a raw material, resulting in limited production capacity and high equipment investment. The isobutylene method has sufficient raw materials, is economical and environmentally friendly, and is the main production method. [0003] In the isobutene oxidation method, under the action of a catalyst, isobutene is oxidized in one or two stages to obtain a gas containing methacrylic acid, and the gaseous product is cooled to recover heat and absorbed by water to obtain an aqueous solution containing 30wt% to 60wt% methacrylic acid. T...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F212/36C08F212/14B01J20/26C02F1/28B01J20/30
CPCC08F290/061B01J20/264C02F1/285C08F212/36C08F212/14
Inventor 徐赛田宇张宏科徐世伟陈俊葛飞朱子忠张捍东
Owner WANHUA CHEM GRP CO LTD
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