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Adsorbent resin used for treating phenolic wastewater and preparing method and application thereof

A technology of resin and pore adsorption, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problem of low efficiency in the treatment of organic wastewater

Active Publication Date: 2016-04-20
NINGBO ZHENGGUANG RESIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many achievements in the prior art regarding the research on adsorption resins. Among them, CN101338019A discloses a method for synthesizing adsorption resins with high specific surface area. This material is used as a raw material, and the raw material, solvent, and catalyst are added to the reactor, heated to a certain temperature for continuous or indirect reaction for a period of time, then cooled, then boiled with dilute acid, extracted with an extractor, finally washed with distilled water, and vacuum-dried , the obtained adsorption resin product is mainly used in air purification; CN1814632A discloses a preparation method of high specific surface area acrylic ester adsorption resin, its synthesis reaction system is composed of water phase and oil phase, and the described High specific surface area acrylate adsorption resins can be used to treat related organic wastewater, but at present, due to the specific surface area of ​​the adsorption resin is only 500-600m 2 / g, its efficiency in treating organic wastewater is not high

Method used

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preparation example Construction

[0025] The invention provides a method for preparing a high specific surface area macroporous adsorption resin for treating phenol-containing wastewater, which is characterized in that it comprises:

[0026] Step 1: Use the aqueous solution of polyvinyl alcohol and sodium chloride as the water phase, add methylene blue solution as the water phase polymerization inhibitor, and use the mixed solution of styrene and divinylbenzene dissolved in BPO and the porogen as the oil phase, macroporous cross-linked polystyrene was obtained by suspension polymerization, the porogen was recovered, and white balls were obtained by drying;

[0027] Step 2: Swell the white balls with a chloromethylation solvent, then add a catalyst for chloromethylation reaction, wash and dry to obtain chlorine balls;

[0028] Step 3: expand the chlorine balls with an expansion agent dichloroethane, and then react under the action of a catalyst, then recover the expansion agent, wash and adjust the acid to obta...

Embodiment 1

[0045] 5g of polyvinyl alcohol and 60g of sodium chloride were added into a three-necked flask with 1000ml of pure water for dissolution, and 5 drops of a mass fraction of 0.1% methylene blue solution were added, and 375g of styrene and 125g of divinylbenzene were added to the beaker as Monomer phase, add BPO accounting for 1% of the total amount of monomers in the monomer phase, adjust the crosslinking degree of the macroporous white balls by controlling the proportion of divinylbenzene in the monomer phase, and then add 300g of isobutanol as a The porogen, the oil phase and the water phase are mixed and started to stir, the speed is adjusted to 100r / min, the temperature of the oil bath is raised to 75°C and kept for 4h, and then the temperature is raised to 95°C, kept for 6 hours, and the porogen is recovered by vacuum distillation. The microspheres were washed with hot water and cold water in turn, and dried; the synthesized macroporous white balls were expanded with chlorom...

Embodiment 2

[0049] Add 5g polyvinyl alcohol and 60g sodium chloride into a three-necked flask with 1000ml pure water for dissolution, and add 5 drops of 0.1% methylene blue solution in mass fraction, add 395g styrene and 105g divinylbenzene in the beaker as Monomer phase, add BPO accounting for 1% of the total amount of monomers to the monomer phase, adjust the crosslinking degree of the macroporous white balls by controlling the proportion of divinylbenzene in the monomer phase, and then add 350g of isobutanol as a The porogen, the oil phase and the water phase are mixed and started to stir, the speed is adjusted to 100r / min, the temperature of the oil bath is raised to 75°C and kept for 4h, and then the temperature is raised to 95°C, kept for 6 hours, and the porogen is recovered by vacuum distillation. The microspheres were washed with hot water and cold water in turn, and dried; the synthesized macroporous white balls were expanded with chloromethyl ether for 2 hours, and an appropriat...

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Abstract

The invention provides a preparing method of high-specific-surface-area macroporous adsorbent resin used for treating phenolic wastewater. The preparing method includes the steps that a water solution of polyvinyl alcohol and sodium chloride is used as a water phase, a methylene blue solution is added, and styrene and divinyl benzene mixed liquor and a pore-foaming agent are used as an oil phase, wherein BPO (benzoyl peroxide) is dissolved in the mixed liquor, macroporous crosslinked polystyrene is obtained through a suspension polymerization method, the pore-foaming agent is recovered, and a polystyrene-divinylbenzene copolymer is obtained through drying; the polystyrene-divinylbenzene copolymer is expanded with chloromethylation solvent, a catalyst is added to carry out a chloromethylation reaction, and a chloromethylated polystyrene-divinylbenzene copolymer is obtained after washing and drying; the chloromethylated polystyrene-divinylbenzene copolymer is expanded with dichloroethane and reacts under the action of a catalyst, an expanding agent is recovered, and the resin is obtained through washing and acid adjusting. The resin obtained through the method has a remarkable effect of treating the phenolic wastewater, the maximum treatment capacity can reach 500 mg / L or above, in addition, the preparing method is simple and easy to implement, and equipment and a feeding method in the prior art continue to be used.

Description

technical field [0001] The invention relates to an adsorption resin, in particular to a high specific surface area macroporous adsorption resin for treating phenol-containing wastewater, a preparation method and application thereof. Background technique [0002] Adsorption resin is a resin adsorbent characterized by adsorption and has a porous three-dimensional structure. It is a newly developed porous resin in the field of polymers in recent years. It is widely used in wastewater treatment, pharmaceutical separation and purification, as a carrier for chemical reaction catalysts, gas chromatography and gel permeation chromatography molecular weight fractionation column. filler. It is characterized by easy regeneration and can be used repeatedly. [0003] At present, there are many achievements in the prior art regarding the research on adsorption resins. Among them, CN101338019A discloses a method for synthesizing adsorption resins with high specific surface area. This ma...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F2/40C08F2/20C08F8/24C08J9/28B01J20/26B01J20/28B01J20/30
Inventor 钟轶泠虞常波楼政
Owner NINGBO ZHENGGUANG RESIN CO LTD
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