Method of treating printing and dyeing wastewater through flocculation oxidation

A technology for printing and dyeing wastewater and oxidation treatment, which is used in oxidized water/sewage treatment, flocculation/sedimentation water/sewage treatment, energy wastewater treatment, etc. It can solve the problems of weak oxidation capacity, poor mineralization effect, and slow oxidation speed. Achieve the effect of fast reaction rate, short processing time and high decolorization rate

Inactive Publication Date: 2013-11-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the decolorization of dyes, peroxides such as hydrogen peroxide are often used as oxidizing agents, but when used alone, the oxidation ability is weak, the oxidation speed is slow, and the mineralization effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 5g / L hexaamminecobalt(Ⅲ) phosphate to 40ml of printing and dyeing wastewater containing reactive brilliant blue KN-19, then add 10ml of 2.7% hydrogen peroxide, stir for 30 minutes, wait for the completion of the decolorization reaction, let it settle After 30 minutes, the decolorization rate of the dye solution is over 90%.

Embodiment 2

[0025] Add 10ml of 4.5% hydrogen peroxide to 40ml of printing and dyeing wastewater containing reactive brilliant blue KN-19, then add 8g / L tris(ethylenediamine)cobalt(Ⅲ) phosphate, stir for 30 minutes, and wait for the decolorization reaction to complete , let it settle for 40 minutes, and the decolorization rate of the dye solution is over 90%.

Embodiment 3

[0027] In 40ml of printing and dyeing wastewater containing rhodamine B, add 10ml of potassium hydrogen persulfate aqueous solution with a concentration of 3%, and then add 7g / L hexaamminecobalt(Ⅲ) phosphate, stir for 40 minutes, and wait for the decolorization reaction to complete. After settling for 40 minutes, the decolorization rate of the dye solution is over 85%.

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PUM

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Abstract

The invention relates to a method of treating printing and dyeing wastewater through flocculation oxidation, which comprises the following steps: adding a Co (III) phosphate coordination compound and an oxidizing agent into the printing and dyeing wastewater, stirring, decoloring, static settlement or settling to obtain the treated printing and dyeing wastewater. According to the method, disclosed by the invention, the adding and reaction sequences of various reagents are not needed to consider; the method can be realized through conventional equipment and devices, and special modification is not needed for the equipment; the method can be carried out on natural conditions without illumination.

Description

technical field [0001] The invention belongs to the field of wastewater treatment methods, and in particular relates to a method for flocculation and oxidation treatment of printing and dyeing wastewater. Background technique [0002] With the development of the dye industry, the environmental pollution problems it brings are becoming more and more prominent. While these colorful fine chemicals bring us visual enjoyment, a large number of colored chemicals produced in dye production, textile printing and dyeing, pulp, paper and other industries Sewage has also become a source of pollution that damages the environment. [0003] A major environmental problem faced by dye-containing wastewater is the removal of chroma, because even if the dye in the water affects the normal function of the receiving water, hinders the self-purification of the water, and is toxic to aquatic microorganisms and fish; at the same time, the water The dyes in the water weaken the transmission of sun...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/72C02F103/30
CPCY02W10/37
Inventor 邢彦军胡晓霞
Owner DONGHUA UNIV
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