Composite decolorizing agent for printing and dyeing wastewater treatment

A printing and dyeing wastewater and decolorizing agent technology, which is applied in textile industry wastewater treatment, water/sewage treatment, special compound water treatment, etc., can solve the problems of being in the blank, and achieve the effect of less usage, sufficient active functional groups, and short settling time

Inactive Publication Date: 2016-03-30
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems existing in the above-mentioned prior art, and provides a composite decolorizing agent for printing and dyeing wastewater treatment, which solves the problem that the prior art is still blank

Method used

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  • Composite decolorizing agent for printing and dyeing wastewater treatment
  • Composite decolorizing agent for printing and dyeing wastewater treatment
  • Composite decolorizing agent for printing and dyeing wastewater treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add dicyandiamide, formaldehyde, ammonium chloride, urea, melamine into the reactor, dicyandiamide: formaldehyde: ammonium chloride: urea: melamine = 1:3.5:0.75:0.13:0.03, mix well, heat up After reacting at 70°C for 5 hours, an organic flocculating decolorizing agent was obtained.

[0028] figure 1 It is the infrared spectrogram of the flocculation decolorizer.

Embodiment 2

[0030] Under the same conditions as in Example 1, the reaction time was changed, and the simulated dye wastewater was processed with the resulting product, and the results were as follows: figure 2 shown.

Embodiment 3

[0032] Under the same conditions as in Example 1, the temperature of reaction is changed, and the simulated dye waste water is processed with the product obtained, the results are as follows image 3 shown.

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PUM

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Abstract

The invention provides a composite decolorizing agent for printing and dyeing wastewater treatment. The composite decolorizing agent is prepared from an organic flocculation decolorizing agent and an inorganic flocculation decolorizing agent. The composite decolorizing agent is mainly used for decolorizing the printing and dyeing wastewater, the organic flocculation decolorizing agent and an inorganic flocculation decolorizing agent are used in cooperation, decolorizing performance is improved, the use amount of the organic decolorizing agent can be reduced, and treatment cost can be reduced.

Description

technical field [0001] The invention relates to a composite decolorizing agent used for printing and dyeing wastewater treatment, in particular to a preparation method of an organic flocculating decolorizing agent and its compounding with an inorganic flocculant; it belongs to the technical field of sewage. Background technique [0002] In recent years, with the rapid development of my country's printing and dyeing industry, while a large amount of clean water resources are being consumed, the amount of colored wastewater produced is also increasing. According to relevant research reports, about 10% to 20% of dyes are wasted and discharged with sewage in the dyeing process. The discharge of colored wastewater not only destroys the beauty of the water body, but also the dyes contained in it will accumulate in the environment, which greatly affects human life and the ecological environment. At present, the methods for treating dye wastewater mainly include activated carbon ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F103/30
CPCC02F1/5236C02F1/5245C02F1/54C02F2103/30C02F2303/18C02F2305/04
Inventor 高肖汉顾传海杨艳秋吕雪川耿仁勇焦玉娟张晓帆罗冠华
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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