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Resource treatment process of 1-amino anthraquinone sulfurization reduction wastewater

A technology of aminoanthraquinone and treatment process, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, inorganic chemistry, etc., and can solve problems such as inability to remove salt in wastewater, long treatment time, and large footprint , to achieve the effect of reducing organic matter, simple operation and lower operating cost

Inactive Publication Date: 2015-12-23
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of treatment method is still in the stage of laboratory research, and the existing defects are: long treatment time, high cost, large investment, large floor area, and none of the above methods can remove the salt in wastewater

Method used

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  • Resource treatment process of 1-amino anthraquinone sulfurization reduction wastewater

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Experimental program
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Effect test

Embodiment 1

[0024] 1-aminoanthraquinone sulfidation reduction wastewater from a chemical plant, COD is 33030mg / L, NH 3 -N is 620mg / L, salt content is 14%, pH=14, and the biodegradability is extremely poor. The sewage is treated as follows:

[0025] (1) Add sulfuric acid dropwise to the 1-aminoanthraquinone sulfidation reduction waste water to adjust the pH to 2, and absorb the harmful acid gas produced during the acid addition process with 10% sodium hydroxide. The waste water is filtered to remove the precipitated anthraquinone residue 1;

[0026] (2) Add 1% powdered activated carbon to waste water, stir and decolorize for 30 minutes, remove residue 2 by filtration to obtain purified waste water;

[0027] (3) adjust the pH of the purified waste water to 11 with 30% sodium hydroxide, then evaporate and concentrate to remove moisture, concentrate until the sodium sulfate content reaches 42%, and crystallize and filter to obtain sodium sulfate solid;

[0028] (4) The step (3) filter mothe...

Embodiment 2

[0030] 1-aminoanthraquinone sulfidation reduction wastewater from a chemical plant, COD is 28010mg / L, NH 3 -N is 530mg / L, salt content is 12%, pH=14, and the biodegradability is extremely poor. The sewage is treated as follows:

[0031] (1) Add sulfuric acid dropwise to the 1-aminoanthraquinone sulfidation-reduction wastewater to adjust the pH to 3, and absorb the harmful acid gas generated during the acid addition with 10% sodium hydroxide. The waste water is filtered to remove the precipitated anthraquinone residue 1;

[0032] (2) Add 1.5% powdered activated carbon to waste water, stir and decolorize for 50 minutes, remove residue 2 by filtration to obtain purified waste water;

[0033] (3) adjust the pH of purified waste water to 12 with 40% sodium hydroxide, then evaporate and concentrate to remove moisture under a vacuum of 0.85 MPa, concentrate until the sodium sulfate content reaches 50%, and crystallize and filter to obtain sodium sulfate solid;

[0034] (4) The moth...

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Abstract

The invention relates to a resource treatment process of 1-amino anthraquinone sulfurization reduction wastewater. The resource treatment process is characterized in that aiming at the characteristics of sulfurization reduction wastewater, most anthraquinone substances are separated out by adjusting pH of wastewater, the wastewater is purified by activated carbon decolorization, and the purified wastewater is subjected to concentration and fractional precipitation to recover sodium sulfate and sodium thiosulfate. By adopting the resource treatment process, the resource treatment of 1-amino anthraquinone sulfurization reduction wastewater is realized, pollution is eliminated, the pertinency is strong, the treatment effect is good, the difficulty in treatment of high-salinity high-concentration refractory organic wastewater generated in the production process of 1-amino anthraquinone is solved, and economy is improved. The treatment process is simple in operation, mild in conditions, good in treatment effect and low in operation cost. The shortcomings of great difficulty, high condition requirement and more water needed for diluting in treatment of the 1-amino anthraquinone sulfurization reduction wastewater are overcome.

Description

1. Technical field [0001] The invention relates to a resource-based treatment process for high-salinity, high-concentration refractory organic wastewater, especially a resource-based treatment process for 1-aminoanthraquinone vulcanization reduction wastewater, belonging to the technical fields of wastewater treatment and chemical industry. 2. Background technology [0002] 1-Aminoanthraquinone is an intermediate in the synthesis of vat dyes, disperse dyes, reactive dyes and acid dyes. Although there are many research methods for the synthesis of 1-aminoanthraquinone, the nitrification reduction method is still used in today's production practice. The disadvantage of this method is that a large amount of waste water is generated in the production process and it is not easy to handle, but there is still no other feasible method so far. method to replace the nitrification reduction method. The sulfidation reduction wastewater produced in the production process of 1-aminoanthr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01D5/00C01B17/64C02F101/34
Inventor 贾寿华左鹏石栋赵青花
Owner SHANDONG AGRICULTURAL UNIVERSITY
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