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Method for treating printing and dyeing waste water by domestic garbage burning fly ash

A technology for domestic waste incineration and printing and dyeing wastewater, applied in the field of environmental engineering

Inactive Publication Date: 2009-10-28
南通市联缘染业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant report on the decolorization of printing and dyeing wastewater by using solid waste such as domestic waste incineration fly ash. Fly ash surface particles have a large number of voids and contain a large number of silicon-aluminum activation sites, which meet the basic requirements for adsorption materials.

Method used

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  • Method for treating printing and dyeing waste water by domestic garbage burning fly ash
  • Method for treating printing and dyeing waste water by domestic garbage burning fly ash
  • Method for treating printing and dyeing waste water by domestic garbage burning fly ash

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Experimental program
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Effect test

Embodiment 1

[0011] Under normal temperature and pressure conditions, add 800mL of printing and dyeing wastewater from cotton spinning mills into a beaker, take 100g of municipal solid waste incineration fly ash dried at 105°C for 24 hours, start the agitator to fully mix the two, and keep the temperature constant at 25°C. Stir for 20-40 minutes, and then stand still for 10-20 minutes. After separating the fly ash and printing and dyeing wastewater, analyze the chroma and TOC of the supernatant after treatment, and analyze the residual chlorine content in the fly ash. The experimental results are shown in Table 1.

[0012] Table 1 Printing and dyeing wastewater treatment effect

[0013]

Embodiment 2

[0015] Under normal temperature and pressure conditions, add 160mL100mg / L MB printing and dyeing wastewater prepared in the laboratory into a beaker, take 20g of municipal solid waste incineration fly ash dried at 105°C for 24 hours, start the agitator to fully mix the two, and keep the temperature constant at 25 ℃. Stir for 20-40 minutes, then stand still for 10-20 minutes, separate the fly ash and printing and dyeing wastewater, analyze the concentration and TOC of the supernatant after treatment, and measure the concentration of heavy metals in the supernatant. The concentration of heavy metals except Pb is lower than the wastewater discharge standard; analysis The residual chlorine content in the fly ash after treatment, the leaching concentration of heavy metals was measured by the TCLP standard leaching test on the fly ash samples, and the leaching concentrations were all lower than the US EPA standard. The experimental results are shown in Tables 2, 3, and 4.

[0016] ...

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PUM

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Abstract

The invention relates to a method for treating printing and dyeing wastewater by utilizing fly ash incinerated of urban living garbage, and belongs to the technical field of environmental engineering. The method is to incinerate fly ash of a certain proportion of printing and dyeing wastewater and urban domestic waste under normal temperature and pressure conditions, stir at a constant temperature to fully mix, and then separate the fly ash and printing and dyeing wastewater after standing still. After being treated by the method of the invention, the chroma of the printing and dyeing wastewater is reduced to 50, the TOC value is reduced to less than 10 mg / L, and the chlorine ions in the fly ash are reduced to less than 0.5% in the printing and dyeing wastewater, which meets the basic requirements for resource utilization of the fly ash. At the same time, the leaching concentration of fly ash heavy metal TCLP does not exceed the standard, achieving the purpose of synergistic effect.

Description

Technical field: [0001] The invention relates to a method for treating printing and dyeing wastewater by utilizing fly ash incinerated of urban living garbage, and belongs to the technical field of environmental engineering. Background technique: [0002] The printing and dyeing industry consumes a lot of water, 100-200m of water is consumed per ton of textile printing and dyeing 3 . 80% to 90% of them are discharged as waste water. The content of organic pollutants in printing and dyeing wastewater is high, the color is deep, and the water quality changes rapidly. With the development of the printing and dyeing industry, new dyes and auxiliaries and other organic substances that are difficult to biodegrade enter the printing and dyeing wastewater in large quantities, making the printing and dyeing wastewater more biodegradable. In order to reduce become one of the difficult industrial wastewater. At present, most domestic manufacturers use biochemical treatment, which req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F103/30
Inventor 钱光人杨晓燕仉博孙福成王辉
Owner 南通市联缘染业有限公司
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