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Adsorbent for printing and dyeing wastewater treatment and preparation method thereof

A printing and dyeing wastewater and adsorbent technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of unsatisfactory decolorization effect, narrow application range and high cost, and achieve good results. Adsorption treatment effect, good decolorization effect, large specific surface area effect

Inactive Publication Date: 2020-08-14
董晓明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional adsorbent is activated carbon, which has strong adsorption capacity and high removal rate, but the regeneration efficiency of activated carbon is low, the water quality of the treated water is difficult to meet the reuse requirements, the cost is high, and the application is limited
[0004] Patent CN104826577B discloses a modified slag adsorbent for the treatment of anionic dye wastewater. Its decolorization effect is not ideal, and it is limited to the treatment of anionic dye wastewater, especially Acid Green 27. However, the composition of printing and dyeing wastewater produced in actual production is complex , the scope of application is narrow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method for an adsorbent for printing and dyeing wastewater treatment, the specific steps are as follows:

[0042] (1) First mix polyethersulfone resin with tourmaline powder modified by N-(β-aminoethyl)-γ-aminopropyltriethoxysilane, and melt-spin to obtain polyethersulfone fibers;

[0043] (2) Then add acrylonitrile, itaconic acid, and methyl methacrylate into the polymerization kettle, then add the initiator and solvent, and continue to add tetraethylenepentamine, mix well, transfer to the microwave reactor, and microwave processing to obtain spinning dope, and wet spinning to obtain polyacrylonitrile fibers;

[0044] (3) Mixing the polyethersulfone fiber obtained in step (1) with the polyacrylonitrile fiber obtained in step (2) according to a mass ratio of 1:2, carding, laying, and needle-punching reinforcement to obtain a mixed fiber;

[0045] (4) Finally, soak the mixed fiber in the aluminum sulfate-magnesium sulfate mixed aqueous solution, add freshl...

Embodiment 2

[0068] A preparation method for an adsorbent for printing and dyeing wastewater treatment, the specific steps are as follows:

[0069] (1) First mix polyethersulfone resin with tourmaline powder modified by N-(β-aminoethyl)-γ-aminopropyltriethoxysilane, and melt-spin to obtain polyethersulfone fibers;

[0070] (2) Then add acrylonitrile, itaconic acid, and methyl methacrylate into the polymerization kettle, then add the initiator and solvent, and continue to add tetraethylenepentamine, mix well, transfer to the microwave reactor, and microwave processing to obtain spinning dope, and wet spinning to obtain polyacrylonitrile fibers;

[0071] (3) Mixing the polyethersulfone fiber obtained in step (1) with the polyacrylonitrile fiber obtained in step (2) according to a mass ratio of 1:3, carding, laying, and needle-punching to obtain a mixed fiber;

[0072] (4) Finally, soak the mixed fiber in the aluminum sulfate-magnesium sulfate mixed aqueous solution, add freshly prepared pol...

Embodiment 3

[0095] A preparation method for an adsorbent for printing and dyeing wastewater treatment, the specific steps are as follows:

[0096] (1) First mix polyethersulfone resin with tourmaline powder modified by N-(β-aminoethyl)-γ-aminopropyltriethoxysilane, and melt-spin to obtain polyethersulfone fibers;

[0097] (2) Then add acrylonitrile, itaconic acid, and methyl methacrylate into the polymerization kettle, then add the initiator and solvent, and continue to add tetraethylenepentamine, mix well, transfer to the microwave reactor, and microwave processing to obtain spinning dope, and wet spinning to obtain polyacrylonitrile fibers;

[0098] (3) Mixing the polyethersulfone fiber obtained in step (1) with the polyacrylonitrile fiber obtained in step (2) according to a mass ratio of 1:2.5, carding, laying, and needle-punching to obtain a mixed fiber;

[0099] (4) Finally, soak the mixed fiber in the aluminum sulfate-magnesium sulfate mixed aqueous solution, add freshly prepared p...

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PUM

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Abstract

The invention provides an adsorbent for printing and dyeing wastewater treatment and a preparation method thereof. Polyether sulfone fibers and polyacrylonitrile fibers are mixed to prepare mixed fibers, the mixed fibers are soaked in an aluminum sulfate-magnesium sulfate mixed aqueous solution, freshly prepared polysilicic acid is added, and the mixture is stirred, reacted and aged to obtain theadsorbent. The polyether sulfone fibers are obtained by mixing polyether sulfone resin and tourmaline powder modified by N-(beta-aminoethyl)-gamma-aminopropyltriethoxysilane, melting and spinning. Thepolyacrylonitrile fibers are obtained by performing polymerization by taking acrylonitrile, itaconic acid and methyl methacrylate as raw materials, then performing tetraethylenepentamine modificationand performing wet spinning. The adsorbent disclosed by the invention is rich in pores and large in specific surface area, has a good adsorption treatment effect on printing and dyeing wastewater with complex components, and has a good decolorization effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an adsorbent for treating printing and dyeing wastewater and a preparation method thereof. Background technique [0002] With the rapid development of global modernization and industrialization, the environmental pollution caused by industrial wastewater has become more and more serious, posing a serious threat to human health and human survival. Among all kinds of industrial wastewater, printing and dyeing wastewater is especially difficult to treat. Textile wastewater is mainly wastewater containing organic matter such as natural impurities, fat, and starch produced during the cooking, rinsing, bleaching, and sizing of raw materials. Printing and dyeing wastewater is produced in multiple processes such as washing, printing, and sizing, and contains inorganic pollutants (alkali, sulfide, various salts, etc.) and a large amount of refractory organic matter (dyes, starch...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/10B01J20/04B01J20/32D06M11/56D06M11/57D06M11/79D01F6/94D01F1/10D01F6/38C02F101/30D06M101/28D06M101/30
CPCC02F1/288B01J20/103B01J20/045B01J20/0248B01J20/0281B01J20/3295D06M11/56D06M11/57D06M11/79D01F6/94D01F1/10D01F6/38C02F2101/308D06M2101/30D06M2101/28
Inventor 董晓明
Owner 董晓明
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