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Decolorant for textile printing and dyeing wastewater

A technology of textile printing and dyeing and decolorizing agent, which is applied in the direction of textile industry wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of low decolorization efficiency, secondary pollution, high production cost, etc., and achieves the preparation method Simple, high decolorization efficiency, low cost effect

Inactive Publication Date: 2016-08-17
TAICANG JINDA PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the flocculants used in printing and dyeing wastewater have problems such as poor decolorization effect, large input amount, and easy to cause secondary pollution.
[0004] The printing and dyeing wastewater flocculants in the prior art have the disadvantages of high production cost and low decolorization efficiency, so it is urgent to provide a flocculant with high decolorization efficiency and can significantly reduce the COD of printing and dyeing wastewater

Method used

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  • Decolorant for textile printing and dyeing wastewater
  • Decolorant for textile printing and dyeing wastewater
  • Decolorant for textile printing and dyeing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Grind calcium carbonate and gac respectively, and sieve;

[0025] (2) Mix calcium carbonate, activated carbon, polyferric sulfate, macroporous resin D301, macroporous resin D101, and anion exchange resin D290 according to the mass ratio of 2:3:10:2:1 to obtain a mixture, that is, textile printing and dyeing wastewater Depigmentation agent.

Embodiment 2

[0027] (1) Grind calcium carbonate and gac respectively, and sieve;

[0028] (2) Mix calcium carbonate, activated carbon, polyferric sulfate, macroporous resin D301, macroporous resin D101, and anion exchange resin D290 according to the mass ratio of 3:2:15:5:2:2 to obtain a mixture, that is, to obtain a textile Printing and dyeing wastewater decolorizer.

Embodiment 3

[0030] (1) Grind calcium carbonate and gac respectively, and sieve;

[0031] (2) Mix calcium carbonate, activated carbon, polyferric sulfate, macroporous resin D301, macroporous resin D101, and anion exchange resin D290 according to the mass ratio of 1:2:10:5:2:2 to obtain a mixture, that is, to obtain a textile Printing and dyeing wastewater decolorizer.

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Abstract

The invention provides a decolorant for the textile printing and dyeing wastewater. The decolorant comprises the following components in weight part: 2-5 parts of calcium carbonate, 1-5 parts of active carbon, 5-15 parts of polymeric ferric sulfate, 1-8 parts of macroporous resin D301, 1-3 parts of macroporous resin D101, and 2-5 parts of anion exchange resin D290. The decolorant is simple in preparation method, convenient in operation and low in cost. The macroporous resin and the anion exchange resin are added into the decolorant, so that the decolorization efficiency improved. The decolorization efficiency can be up to over 80%.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to a textile printing and dyeing wastewater decolorizer. Background technique [0002] The printing and dyeing industry is a large discharge of industrial wastewater. According to incomplete statistics, the daily discharge of printing and dyeing wastewater in the country is 3×10 6 ~4×10 6 m 3 , Printing and dyeing wastewater contains a variety of biologically toxic organic substances, and even if the residual dye components are discharged into the water body at a low concentration, it will cause low light transmittance of the water body and lead to the destruction of the water body ecosystem. [0003] It is one of the main harmful and difficult-to-treat industrial wastewater in my country. It is characterized by a large amount of wastewater, complex water quality, high concentration of organic matter, many refractory substances, and deep color. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F103/30
CPCC02F1/52C02F1/5245C02F1/56C02F2103/30
Inventor 张惠忠
Owner TAICANG JINDA PRINTING & DYEING CO LTD
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