High-concentration wastewater resource utilization method

A high-concentration wastewater and resource-recycling technology, applied in chemical instruments and methods, water pollutants, multi-stage water treatment, etc. Treatment cost, effect of improving adsorption capacity

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

AI Technical Summary

Problems solved by technology

[0006] If the adsorption capacity 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 adsorption capacity and large amount of adsorbent in the adsorption and decolorization process of cationic dye dyeing wastewater can be overcome

Method used

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  • High-concentration wastewater resource utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add strong acidic hydrogen-type cation exchange resin to high-concentration water-based ink printing wastewater, and stir the reaction to reduce the solubility of the water-soluble polymer binder and destroy the stability of the binder, so that the extractable substances in the wastewater just condense into Insoluble fine solid particles;

[0029] (2) Separating the cation exchange resin, slowly adding an appropriate amount of potassium bicarbonate powder to the wastewater, reacting with the wastewater to generate micro-bubbles, making the bubbles adhere to the fine solid particles in the wastewater, and forming gas, liquid and solid particles between the fine solid particles. Contact interface;

[0030] (3) Heating to a temperature higher than 25°C above the softening point of the binder, gradually making the fine solid particles bond to each other to form a large solid extract with tiny air bubbles and water inside;

[0031](4) Keep warm for 25 minutes, use the f...

Embodiment 2

[0037] (1) Add weakly acidic hydrogen-type cation exchange resin to high-concentration water-based ink printing wastewater, and stir the reaction to reduce the solubility of the water-soluble polymer binder and destroy the stability of the binder, so that the extractable substances in the wastewater just condense into Insoluble fine solid particles;

[0038] (2) Separating the cation exchange resin, slowly adding an appropriate amount of sodium bicarbonate powder to the wastewater, reacting with the wastewater to generate micro-bubbles, making the bubbles adhere to the fine solid particles in the wastewater, and forming gas, liquid and solid particles between the fine solid particles. Contact interface;

[0039] (3) Heating to a temperature 20°C higher than the softening point of the binder, gradually making the fine solid particles bond to each other to form a large solid extract with tiny air bubbles and water inside;

[0040] (4) Keep warm for 30 minutes, use the force suc...

Embodiment 3

[0046] (1) Add strong acidic hydrogen-type cation exchange resin to high-concentration water-based ink printing wastewater, and stir the reaction to reduce the solubility of the water-soluble polymer binder and destroy the stability of the binder, so that the extractable substances in the wastewater just condense into Insoluble fine solid particles;

[0047] (2) Separate the cation exchange resin, slowly add appropriate amount of sodium carbonate powder to the wastewater, react with the wastewater to generate micro-bubbles, make the bubbles adhere to the fine solid particles in the wastewater, and form three phases of gas, liquid and solid between the fine solid particles contact interface;

[0048] (3) Heating to a temperature 15°C higher than the softening point of the binder, gradually making the fine solid particles bond to each other to form a large solid extract with tiny air bubbles and water inside;

[0049] (4) Keep warm for 30 minutes, use the force such as the curl...

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Abstract

The invention discloses a high-concentration wastewater resource utilization method. The high-concentration wastewater resource utilization method comprises the following steps: adding a cation exchanger in wastewater, and carrying out stirring reaction to enable extractable substances in the wastewater to be exactly condensed into insoluble fine and small solid particles; separating out the cation exchanger, slowly adding a proper amount of chemical agent in the wastewater to generate small air bubbles, and enabling the air bubbles to adhere to the fine and small solid particles in the wastewater so as to reduce viscosity of the wastewater; heating to the temperature which is higher than a connecting material softening point by 0-30 DEG C, and enabling the fine and small solid particles to adhere to one another so as to form large-particle solids; carrying out insulation treatment for a certain time so that a blocky extract is formed; cooling the extract with a saturated potassium hydroxide solution; and carbonizing and activating the pulverized and dried blocky extract at one step for 1-4 h at the temperature of 700 DEG C under the protection of nitrogen, and breaking the blockyextract to obtain an adsorbent. The adsorption capacity of the adsorbent prepared by the method to cationic dyestuff can reach 450 mg / g or above.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for resource utilization of high-concentration wastewater. Background technique [0002] Ink is an important material for printing, which can be divided into oil-based ink and water-based ink. Oil-based inks use organic solvents as solvents, which cause serious pollution and are gradually eliminated. Water-based ink is mainly composed of water-soluble binder (resin), pigment, alcohol, amine or ammonia and other additives and water. Water-based ink has been widely used in various fields because of its health, environmental protection and safety characteristics. At present, a large number of packaging materials such as plastics are increasingly using water-based inks in printing and printing. When changing colors, printing equipment and ink storage tanks need to be cleaned, resulting in a certain amount of high-concentration water-based ink p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F9/10C02F101/30C02F101/16
CPCB01J20/20B01J2220/4875C02F1/02C02F1/283C02F1/42C02F9/00C02F2001/425C02F2101/16C02F2101/308C02F2301/08
Inventor 柳荣展张克瑞张宾潘颖石宝龙
Owner QINGDAO UNIV
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