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Method for using domestic garbage incineration flyash as decolorizing material of industrial dye waste water

A technology of domestic waste incineration and dye wastewater, applied in the direction of adsorption water/sewage treatment, etc., can solve the problem of high cost of activated carbon production and regeneration, achieve the goal of harmless wastewater, and reduce the effect of chromaticity

Inactive Publication Date: 2008-11-12
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used in adsorption decolorization, such as activated carbon, silica gel, bauxite, montmorillonite, etc., have good decolorization effects. When activated carbon absorbs water-soluble dyes, the adsorption rate is high, but it does not adsorb suspended solids and insoluble dyes. In addition, activated carbon production and regeneration The cost is relatively high, which limits its use to a certain extent

Method used

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  • Method for using domestic garbage incineration flyash as decolorizing material of industrial dye waste water
  • Method for using domestic garbage incineration flyash as decolorizing material of industrial dye waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Under normal temperature and pressure conditions, add 1000mL of dark blue dye wastewater from a cotton spinning and dyeing factory into four beakers, weigh 50g, 100g, 125g, and 150g of domestic waste incineration fly ash dried at 105°C for 24 hours and put them into the beakers.

[0014] Table 1 The decolorization effect of different fly ash dosages on dye wastewater

[0015]

[0016] The fly ash particle diameter is 30-150um, and 50% of the fly ash particle diameter is distributed in the range of 38.5-74um. Start the electric mixer to mix the fly ash and industrial dye wastewater evenly. After stirring for 30 minutes, let it stand for 30 minutes to separate the fly ash from the dark blue dye wastewater, and analyze the chroma of the treated dye wastewater. The experimental results are shown in Table 1.

Embodiment 2

[0018] Under normal temperature and pressure conditions, add 1000mL of dark blue dye wastewater from cotton spinning and printing and dyeing factories into four beakers respectively, weigh 50g, 100g, 125g, and 150g of domestic waste incineration fly ash calcined at a high temperature of 500°C and put them into the beakers Among them, the fly ash particle diameter is 30-150um, and 50% of the fly ash particle size distribution is within the range of 38.5-74um. Start the electric mixer to mix the fly ash and industrial dye wastewater evenly. After stirring for 30 minutes, let it stand for 30 minutes, separate the calcined fly ash from the dark blue dye wastewater, and analyze the chroma of the treated dye wastewater. The experimental results are shown in Table 2.

[0019] Table 2 Effect of different fly ash dosages on decolorization of dye wastewater after high temperature calcination

[0020]

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Abstract

The invention relates to household waste incinerated fly ash for a discoloring material of industrial dye wastewater, which belongs to the environmental engineering technical application field. Under conditions of normal temperature and atmosphere, the invention utilizes the characteristics that the surface of household waste incinerated fly ash particles is provided with mass micropores and has a large surface area; the fly ash with a certain amount is added to the industrial dye wastewater; and the discoloring and harmless treatment of the dye wastewater is realized by a physical absorption method. Under the conditions of normal temperature and atmosphere, the reaction process has simple operation; the chroma analysis of the treated dry wastewater proves that the chroma of the industrial dye wastewater is reduced from over 1000 before the treatment to 30 after the treatment minimally, thereby achieving the dye printing wastewater emission standard and a harmless target.

Description

technical field [0001] The invention relates to domestic waste incineration fly ash used as a decolorization material for industrial dye wastewater, and belongs to the application field of environmental engineering technology. Utilize domestic waste incineration fly ash as decolorization material to treat industrial dye wastewater, so as to achieve the purpose of decolorization and harmless treatment of dye wastewater. Background technique [0002] With the rapid development of the dye industry, my country's water environment has been seriously polluted. According to statistics, nearly 200 million m 3 The dye wastewater is discharged into various water bodies. These dye wastewaters have complex components, high concentration, high chroma, and many refractory substances. They contain a variety of organic substances with biological toxicity or tertiary properties, which are difficult to treat by conventional methods. The dyes contained in dye wastewater are mainly some hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28
Inventor 杨晓燕钱光人孙福成
Owner SHANGHAI UNIV
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