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Preparation method for improving adsorption performance of adsorbent prepared from printing waste liquid

A technology for adsorption properties and extracts, which is applied in the field of improving the adsorption properties of adsorbents prepared from printing waste liquid extracts, can solve the problems of large amount of adsorbents and low adsorption properties of adsorbents, and achieve improved utilization and adsorption properties , The effect of saving processing costs

Inactive Publication Date: 2019-01-04
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

"The dosage of the adsorbent is 5g / L wastewater, which obviously has the defects of low adsorption performance and large amount of adsorbent
[0006] If the adsorption performance of the prepared adsorbent can be improved, the amount of adsorbent can be greatly reduced, the cost can be saved, the treatment effect can be improved, and the defects of low adsorbent adsorption performance and large amount of adsorbent used in the adsorption and decolorization process of cationic dye dyeing wastewater can be overcome

Method used

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  • Preparation method for improving adsorption performance of adsorbent prepared from printing waste liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 98% concentrated sulfuric acid to the high-concentration water-based ink printing waste liquid, and stir the reaction to inhibit the ionization degree of the ionizable group of the water-soluble polymer linking material in the waste liquid, reduce the solubility of the linking material, and destroy the connection The stability of the material, so that the extractable substances in the waste liquid just condense into insoluble fine solid particles and cannot be flocculated;

[0027] (2) Stir continuously to make the fine solid particles release bound water, reduce the viscosity of the waste liquid and prevent the further flocculation of the generated fine solid particles, and at the same time add the chemical agent sodium bicarbonate that reacts with the waste liquid to form tiny bubbles into the waste liquid 5g / L, make the air bubbles adhere to the fine solid particles in the waste liquid, form a three-phase contact interface of gas, liquid and solid between the ...

Embodiment 2

[0034] (1) Add 98% glacial acetic acid to the high-concentration water-based ink printing waste liquid, stir the reaction, inhibit the ionization degree of the ionizable group of the water-soluble polymer binder in the waste liquid, reduce the solubility of the binder, and destroy the connection The stability of the material, so that the extractable substances in the waste liquid just condense into insoluble fine solid particles and cannot be flocculated;

[0035] (2) Stir continuously to make the fine solid particles release bound water, reduce the viscosity of the waste liquid and prevent the further flocculation of the generated fine solid particles, and add 8g of sodium carbonate, a chemical agent that reacts with the waste liquid to form tiny bubbles, into the waste liquid / L, make the bubbles adhere to the fine solid particles in the waste liquid, form a gas, liquid and solid three-phase contact interface between the fine solid particles, prevent the fine solid particles ...

Embodiment 3

[0042] (1) Add 40% hydrochloric acid to the high-concentration water-based ink printing waste liquid, stir the reaction, inhibit the ionization degree of the ionizable group of the water-soluble polymer linking material in the waste liquid, reduce the solubility of the linking material, and destroy the linking material Stability, so that the extractable substances in the waste liquid just condense into insoluble fine solid particles and cannot be flocculated;

[0043] (2) Stir continuously to make the fine solid particles release bound water, reduce the viscosity of the waste liquid and prevent the further flocculation of the generated fine solid particles, and at the same time add 10g of potassium carbonate, a chemical agent that reacts with the waste liquid to form tiny bubbles, into the waste liquid / L, make the bubbles adhere to the fine solid particles in the waste liquid, form a gas, liquid and solid three-phase contact interface between the fine solid particles, prevent ...

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Abstract

The invention discloses a preparation method for improving an adsorption performance of adsorbent prepared from printing waste liquid. The method includes steps: adding chemical agents capable of generating hydrogen ions into high-concentration water-based ink printing waste liquid to enable extractable substances to be just coagulated into insoluble fine solid particles without flocculation; stirring, and adding chemical agents capable of generating tiny bubbles through reaction with the waste liquid into the waste liquid to form a gas-liquid-solid three-phase contact interface among the finesolid particles; heating to form large-particle solid extract; after the temperature is 5-25 DEG C higher than a softening point of a connection material, keeping the temperature to form block extract; after the block extract is completely contracted in volume, discharging water, and hardening the extract; taking out the block extract, cooling, and subjecting to low-temperature drying or naturaldrying; crushing the dried extract, adding an activating agent, well mixing, performing one-step carbonizing and activating at 500-800DEG C for 1-4h under nitrogen protection, and crushing to obtain the adsorbent with the excellent adsorption performance.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a preparation method for improving the adsorption performance of an adsorbent prepared from printing waste liquid extract. Background technique [0002] Ink is composed of pigments, binders, fillers, additives, etc., and can be divided into oil-based inks and water-based inks. Oil-based ink contains a large amount of organic solvents, which is seriously polluted and gradually eliminated. Water-based ink is mainly composed of water-soluble resin, pigment, alcohol, amine or ammonia and other additives and water. Water-based ink is widely used in various fields because of its health, environmental protection and safety characteristics. At present, a large number of plastic packaging materials are increasingly using water-based inks in printing and printing. When changing colors, printing equipment and water-based ink storage tanks need to be cleaned, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F9/10C02F101/30
CPCB01J20/20B01J2220/4875C02F1/02C02F1/24C02F1/283C02F9/00C02F2101/308C02F2301/08
Inventor 柳荣展蔡豆豆石宝龙张克瑞张宾潘颖
Owner QINGDAO UNIV
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