Treatment method of anthraquinone dye waste acid

A treatment method, the technology of anthraquinones, applied in the direction of filtration treatment, special treatment targets, multi-stage water treatment, etc., can solve the problems of unsatisfactory COD reduction effect, unsuitable recovery and treatment of high-concentration anthraquinone sulfuric acid waste acid, etc. Achieve efficient recycling and reduce COD content

Inactive Publication Date: 2020-02-07
CHANGZHOU WUJIN YOUBANG WATER PURIFICATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies that the existing anthraquinone waste acid treatment technology is not suitable for the recovery and treatment of high-concentration sulfuric acid anthraquinone waste acid, and the effect of COD reduction is not ideal, and provides an anthraquinone dye Treatment method of waste acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A treatment method for anthraquinone dye waste acid, comprising the steps of:

[0039] S1. Preparation of resin balls: take divinylbenzene, p-chlorostyrene and activated clay with a weight ratio of 1:3:4, carry out suspension polymerization reaction at a speed of 5000r / min, and a water bath temperature of 80°C for a reaction time of 5 hours, and evaporate to dryness Obtain the resin pellet, get the particle diameter of synthesis 0.5mm, specific surface area 650m 2 / g resin balls, sulfonated and modified with 70% sulfuric acid for 8 hours, then neutralized and washed with 5% ammonia water until neutral;

[0040] S2. Waste acid adsorption treatment: the above-mentioned adsorption resin balls are packed into a resin column, and an adsorption column with a length-to-diameter ratio of 10:1 is formed. The flow rate of waste acid is 5BV / h;

[0041] S3. Deep oxidation treatment: 17.4g / L3 times (the amount of potassium permanganate added is 3 to 5 times of the COD content in t...

Embodiment 2

[0047] A treatment method for anthraquinone dye waste acid, comprising the steps of:

[0048] S1. Preparation of resin balls: take divinylbenzene, p-chlorostyrene and activated clay with a weight ratio of 1:3:4, carry out suspension polymerization reaction at a speed of 5000r / min, and a water bath temperature of 80°C for a reaction time of 5 hours, and evaporate to dryness Obtain the resin pellet, get the particle diameter of synthesis 0.5mm, specific surface area 650m 2 / g resin balls, sulfonated and modified with 70% sulfuric acid for 8 hours, then neutralized and washed with 5% ammonia water until neutral;

[0049] S2. Waste acid adsorption treatment: the above-mentioned adsorption resin balls are packed into a resin column, and an adsorption column with a length-to-diameter ratio of 30:1 is formed. The flow rate of waste acid is 5BV / h;

[0050] S3. Deep oxidation treatment: 4.5g / L (3 times) of potassium permanganate was added to the waste acid for adsorption and decolori...

Embodiment 3

[0056] A treatment method for anthraquinone dye waste acid, comprising the steps of:

[0057] S1. Preparation of resin balls: take divinylbenzene, p-chlorostyrene and activated clay with a weight ratio of 1:3:4, carry out suspension polymerization reaction at a speed of 5000r / min, and a water bath temperature of 80°C for a reaction time of 5 hours, and evaporate to dryness Obtain the resin pellet, get the particle diameter of synthesis 0.5mm, specific surface area 650m 2 / g resin balls, sulfonated and modified with 70% sulfuric acid for 8 hours, then neutralized and washed with 5% ammonia water until neutral;

[0058] S2. Waste acid adsorption treatment: the above-mentioned adsorption resin balls are packed into a resin column, and an adsorption column with a length-to-diameter ratio of 10:1 is formed. The flow rate of waste acid is 5BV / h;

[0059] S3. Deep oxidation treatment: 29.1g / L (5 times) of potassium permanganate was added to the waste acid for adsorption and decolor...

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Abstract

The invention discloses a treatment method of anthraquinone dye waste acid. The treatment method comprises the following steps: preparing resin balls and carrying out sulfonation modification; washingwith ammonia water to be neutral, filling a resin column with the adsorption resin balls, performing adsorption decolorization on the filtered anthraquinone dye waste acid through an adsorption column, adding potassium permanganate into the adsorption decolorized waste acid, filtering and separating to obtain a colorless sulfuric acid solution, desorbing the resin by adopting a desorbing agent, and recycling the desorbed resin to the step S2. According to the invention, a recovery process of combining specific adsorption resin with adsorption treatment and deep oxidation treatment is adopted;according to the method, the anthraquinone dye waste acid is efficiently recycled, the recovery rate of sulfuric acid can be close to about 90%, the removal rate of the COD content of the waste acidcan reach 99% or above, and the method can be used for treating the anthraquinone sulfate waste acid with the COD content of 5,000 ppm to 20,000 ppm.

Description

technical field [0001] The invention relates to the technical field of waste acid treatment, in particular to a method for treating waste acid of anthraquinone dyes. Background technique [0002] Anthraquinone is an important chemical intermediate, widely used in the industrial production of disperse dyes such as disperse blue 56, disperse blue 60, disperse red 60 turquoise blue HBF, vat gray BG and acid dyes. At present, the output of anthraquinone dye intermediates in my country has exceeded 63,000 t / a, and the waste acid of dyes discharged during the production process has caused a huge impact on the environment. This kind of waste acid has high chroma, high organic matter content, and high pH, ​​and the treatment effect of traditional physical and chemical methods is not ideal. At the same time, the anthraquinone dye waste acid also contains a relatively high content of sulfuric acid. If the chroma of the waste acid can be effectively removed and the COD can be reduced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/34
CPCC02F9/00C02F1/285C02F1/72C02F1/001C02F2101/34C02F2101/308C02F2303/16C02F2209/08C02F2301/08
Inventor 朱松锋居银栋黄莉君陈炎彬
Owner CHANGZHOU WUJIN YOUBANG WATER PURIFICATION MATERIALS
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