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Printing and dyeing wastewater decoloration flocculating agent and preparation method thereof

A decolorizing flocculant, a technology for printing and dyeing sewage, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. Easy to store and use, reduce chroma, COD reduction effect

Inactive Publication Date: 2016-07-06
南通海陵环境检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of treating printing and dyeing wastewater generally uses pure organic flocculants or inorganic flocculants, the reaction time is slow, and in the process of flocculation, the color of printing and dyeing wastewater cannot be removed at the same time

Method used

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  • Printing and dyeing wastewater decoloration flocculating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present embodiment provides a kind of printing and dyeing sewage decolorizing flocculant and preparation method thereof:

[0020] 10 parts of polyacrylamide;

[0021] 2 parts diatomaceous earth;

[0022] 20 parts of lignin;

[0023] Sodium perborate 3 parts.

[0024] Add diatomaceous earth and lignin into a powder mixer, stir evenly, then slowly add polyacrylamide, finally add sodium perborate, continue stirring, and you get it.

Embodiment 2

[0026] The present embodiment provides a kind of printing and dyeing sewage decolorizing flocculant and preparation method thereof:

[0027] 30 parts of polyacrylamide;

[0028] 4 parts diatomaceous earth;

[0029] 40 parts of lignin;

[0030] Sodium perborate 15 parts.

[0031] According to the steps described in Example 1, the above components were mixed to obtain the sewage treatment agent.

Embodiment 3

[0033] The present embodiment provides a kind of printing and dyeing sewage decolorizing flocculant and preparation method thereof:

[0034] 20 parts of polyacrylamide;

[0035] 3 parts diatomaceous earth;

[0036] 30 parts of lignin;

[0037] Sodium perborate 9 parts.

[0038] According to the steps described in Example 1, the above components were mixed to obtain the sewage treatment agent.

[0039] Implementation Effect:

[0040] Sewage treatment: Take the sewage finally discharged from the printing and dyeing factory. The COD is 2200 and the chromaticity is 50°C. The results after flocculation are shown in the table below:

[0041]

[0042] From the test results of the above examples, it can be seen that after adding the three flocculants, the COD of the printing and dyeing sewage has dropped significantly, all of which have dropped to the second-level discharge standard, and the chroma has also dropped significantly, which can show that the organic Floccula...

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PUM

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Abstract

The invention provides a printing and dyeing sewage decolorizing flocculant and a preparation method thereof, comprising the following components in parts by weight: 10-30 parts of polyacrylamide, 2-4 parts of diatomaceous earth, 20-40 parts of lignin, and sodium perborate 3‑15 parts, the preparation method is to add diatomaceous earth and lignin in a powder mixer, stir evenly, then slowly add polyacrylamide, finally add sodium perborate, and continue stirring to obtain the printing and dyeing sewage treatment agent prepared by the present invention It is a solid powder, which is easy to store and use. After adding to the water body, it can reduce the COD of printing and dyeing wastewater in a short time, and at the same time reduce the chroma of printing and dyeing wastewater.

Description

technical field [0001] The invention relates to the field of sewage purification treatment, in particular to a printing and dyeing sewage decolorization flocculant and a preparation method thereof. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from printing and dyeing factories that mainly process cotton, hemp, chemical fibers and their blended products. Printing and dyeing wastewater has a large amount of water, 100-200 tons of water is consumed per ton of textile printing and dyeing, of which 80-90% becomes wastewater. Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. It is one of the most difficult industrial wastewater to treat. Impurities, sand substances, inorganic salts, etc. [0003] The main methods used to treat printing and dyeing wastewater include physical and chemical methods, biochemical methods,...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
CPCC02F1/56C02F1/5236C02F1/5263C02F2103/30
Inventor 丁俊铭
Owner 南通海陵环境检测有限公司
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