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Composite material for printing and dyeing wastewater treatment and preparation method thereof

A composite material, fly ash technology, applied in water/sewage treatment, special compound water treatment, light water/sewage treatment, etc., can solve the problems of slow overall reaction rate and low quantum yield, and achieve excellent service life, The effect of improving catalytic efficiency and good mechanical properties

Inactive Publication Date: 2019-02-15
青岛亿天环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this part of the light only accounts for 5% of the sunlight hitting the ground, and TiO 2 The quantum yield is very low, currently the highest is no more than 20%, and its overall reaction rate is slow, so it is difficult to treat large-volume and high-concentration printing and dyeing wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of composite material, comprises the following steps:

[0026] (1) Mix 34g of butyl titanate with 200ml of ethyl acetate, add 100ml of 15wt% zinc nitrate aqueous solution, and mix well to obtain a mixed solution; feed water-containing gas and stir for 3h, obtain a white powder after filtration, dry and dry at 500 Calcined at ℃ for 1h to obtain zinc-doped TiO 2 of nanoparticles;

[0027] (2) 150ml of 10wt% cerium nitrate solution, add the zinc-doped TiO that step (1) obtains 2 The nano-particles were impregnated for 12 hours, dried and calcined at 700°C for 2 hours to obtain nano-titanium oxide doped with zinc oxide and cerium oxide;

[0028] (3) Sieve the fly ash through 600 meshes to remove larger particles, add the obtained fine fly ash to the acid solution and react for 1 hour, then add it to the lye and react for 1 hour to obtain surface-modified fly ash;

[0029] (4) Mix the surface-modified fly ash obtained in step (3), the nano-titanium ...

Embodiment 2

[0031] The preparation method of composite material, comprises the following steps:

[0032](1) Mix 34g of butyl titanate with 150ml of methyl acetate, add 200ml of 15wt% zinc nitrate aqueous solution, and mix uniformly to obtain a mixed solution; feed water-containing gas and stir for 2h, obtain a white powder after filtration, dry and dry at 700 Calcined at ℃ for 1h to obtain zinc-doped TiO 2 of nanoparticles;

[0033] (2) 100ml of 10wt% cerium sulfate solution, add the zinc-doped TiO that step (1) obtains 2 The nano-particles were impregnated for 24 hours, dried and calcined at 900°C for 1 hour to obtain nano-titanium oxide doped with zinc oxide and cerium oxide;

[0034] (3) Sieve the fly ash through 600 meshes to remove larger particles, add the obtained fine fly ash to the acid solution and react for 6 hours, then add it to the lye and react for 6 hours to obtain surface-modified fly ash;

[0035] (4) Mix the surface-modified fly ash obtained in step (3), the nano-tit...

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PUM

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Abstract

The invention discloses a composite material for printing and dyeing wastewater treatment. An active component of the composite material is nanometer titanium oxide doped with zinc oxide and cerium oxide; a carrier of the composite material comprises surface-modified fly ash and aluminum oxide; the molar ratio of the zinc oxide to the titanium oxide is (1-10):1; the molar ratio of the cerium oxideto the titanium oxide is (0.2-5):1; the mass ratio of the surface-modified fly ash to the aluminum oxide is (1-10):1; in the composite material, the molar ratio of the active component to the carrieris (0.1-5):1. The composite material significantly improves the catalytic efficiency of a photooxidation catalyst and has relatively strong organic matter adsorbing capacity; the prepared composite material has good mechanical properties, can be repeatedly recycled for use, and has the service life being much longer than that of the composite material in the prior art.

Description

technical field [0001] The invention belongs to the field of water pollution control, and in particular relates to a composite material used for printing and dyeing wastewater treatment and a preparation method thereof. Background technique [0002] With the rapid development of industrial technology and the continuous expansion of production scale, the amount of industrial wastewater in my country is increasing day by day, of which the amount of printing and dyeing wastewater accounts for about 10% of the total amount of wastewater, and about 600-700 million tons of printing and dyeing wastewater are discharged into the water environment every year . Due to the different fiber raw materials, product varieties, processing techniques and processing methods, the composition and properties of wastewater vary greatly. Commonly used fiber materials are cotton, wool, silk, hemp, polyester, acrylic, vinylon and viscose. The processing procedures and processing methods of each fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10C02F1/32C02F1/72
CPCC02F1/32C02F1/725B01J23/002B01J23/10C02F2305/10B01J2523/00B01J35/39B01J2523/27B01J2523/3712B01J2523/47
Inventor 王英美
Owner 青岛亿天环保科技有限公司
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