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Method for preparing adsorption decoloring agent with photocatalytic function

An adsorption decolorization and photocatalytic technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, adsorbed water/sewage treatment, etc., can solve the problems of low adsorption capacity and large amount of decolorizing agent, so as to reduce the pollution load and improve the Utilization rate, the effect of facilitating subsequent processing

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 decolorizing agent is 5g / L wastewater, which obviously has the defects of low adsorption capacity and large amount of decolorizing agent

Method used

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  • Method for preparing adsorption decoloring agent with photocatalytic function
  • Method for preparing adsorption decoloring agent with photocatalytic function
  • Method for preparing adsorption decoloring agent with photocatalytic function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add an appropriate amount of 200-400 mesh powdered sulfonated coal to the high-concentration water-based ink printing wastewater, stir and react, and use the exchangeable ions ionized by the sulfonated coal to suppress the ionizable group of the water-soluble binder in the wastewater The degree of ionization of the cluster reduces its solubility and destroys the stability of the connecting material, so that the extractable substances in the wastewater just condense into insoluble fine solid particles, and at the same time the exchangeable ions combine with the amine (ammonia) in the wastewater to promote ion exchange and fix the wastewater. Amines (ammonia);

[0029](2) Stir the wastewater at high speed (240r / min) to prevent the flocculation of the fine solid particles and keep the waste liquid mixed evenly. Use ultrasonic treatment and heat at the same time, slowly decelerate the stirring (50r / min), and gradually make the fine solid particles together with the fixed...

Embodiment 2

[0035] (1) Add an appropriate amount of 200-400 mesh powdered sulfonated coal to the high-concentration water-based ink printing wastewater, stir and react, and use the exchangeable ions ionized by the sulfonated coal to suppress the ionizable group of the water-soluble binder in the wastewater The degree of ionization of the cluster reduces its solubility, destroys the stability of the binder, and makes the extractable substances in the wastewater condense into insoluble fine solid particles. At the same time, the exchangeable ions combine with the amine (ammonia) in the wastewater to promote ion exchange and fix the amine Amines (ammonia);

[0036] (2) Stir the wastewater at high speed (300r / min) to prevent the generated fine solid particles from flocculating and keep the waste liquid mixed evenly, use ultrasonic treatment and heat at the same time, stir slowly (30r / min), gradually make the fine solid particles together with the fixed organic amine The sulfonated coal is bon...

Embodiment 3

[0042] (1) Add an appropriate amount of 200-400 mesh powdered sulfonated coal to the high-concentration water-based ink printing wastewater, stir and react, and use the exchangeable ions ionized by the sulfonated coal to suppress the ionizable group of the water-soluble binder in the wastewater The degree of ionization of the cluster reduces its solubility, destroys the stability of the binder, and makes the extractable substances in the wastewater condense into insoluble fine solid particles. At the same time, the exchangeable ions combine with the amine (ammonia) in the wastewater to promote ion exchange and fix the amine Amines (ammonia);

[0043] (2) Stir the wastewater at high speed (240r / min) to prevent the generated fine solid particles from flocculating and keep the waste liquid mixed evenly, use ultrasonic treatment and heat at the same time, stir slowly (40r / min), gradually make the fine solid particles together with the fixed organic amine The sulfonated coal is bon...

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Abstract

The invention discloses a method for preparing an adsorption decoloring agent with a photocatalytic function. The method includes the following steps: adding sulfonated coal into high-concentration aqueous ink printing waste water, stirring and reacting to condense extractables in the waste water into insoluble fine particles, performing ion exchange at the same time, and fixing amine (ammonia); stirring the waste water at a high speed to prevent the generated fine particles from flocculating, treating with ultrasonic wave and heating at the same time, and stirring the waste water at a slow speed to form the large particle extract with multiple holes inside; keep preforming ultrasonic treatment and heat preservation until the temperature is more than 5-25 DEG C above the softening point ofa water-soluble binder; stopping the ultrasonic treatment until the volume of the extract is fully contracted, discharging water, and rapidly cooling the surface of the extract; taking out the extract, fully cooling, crushing and drying; and carbonizing the dried extract in a muffle furnace at 450-550 DEG C for 1-4 hours under the protection of nitrogen to prepare the C3N4-containing adsorptiondecoloring agent with the photocatalytic function.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for preparing an adsorption decolorant with photocatalytic function by using high-concentration printing wastewater extract. Background technique [0002] Water-based ink is mainly composed of water-soluble resin binder, 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, resulting in a certain amount of high-concentration water-based ink wastewater. This kind of water-based ink wastewater contains pigments, water-soluble acrylic resin binders, alcohols, amines (ammonia) and other pollutant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/02B01J27/24C02F1/28C02F1/30C02F9/10C02F101/30
CPCB01J20/0259B01J20/20B01J27/24B01J2220/4875C02F1/02C02F1/281C02F1/283C02F1/30C02F1/36C02F1/42C02F9/00C02F2101/308C02F2301/08C02F2305/10
Inventor 柳荣展张克瑞石宝龙张宾潘颖蔡豆豆
Owner QINGDAO UNIV
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