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Method for treating garbage burning flying ash

A technology for waste incineration fly ash and compounds, which is used in the field of stabilization treatment, harmless hazardous waste, and chemical stabilization treatment of waste incineration fly ash. Reaching the entry standard of domestic waste landfill and other issues, achieving the effect of low treatment cost, low capacity increase ratio, and reduced treatment cost

Inactive Publication Date: 2010-06-02
沈恩善
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used cement curing, asphalt curing, inorganic chemical stabilization, organic chemical stabilization and other methods either have a large volume increase ratio, or have long-term stability problems or high cost of chemicals, and generally cannot reach domestic waste landfill. field entry standard

Method used

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Embodiment Construction

[0013] A method for processing waste incineration fly ash, the steps of the processing method are as follows:

[0014] (1): The mass components are as follows: 0.3-3 parts of pentahydroxyacetate-containing compounds; 0.5-12 parts of dimethylaminosulfate-containing compounds; 20-50 parts of water, at 50-80 °C Prepare stabilizer solution at high temperature;

[0015] The optimum quality components of the stabilizer solution are: 2 parts of compounds containing pentahydroxyacetate; 7 parts of compounds containing dimethylaminosulfate; and 35 parts of water. The compound containing pentahydroxyacetate can be sodium pentahydroxyacetate, magnesium pentahydroxyacetate, aluminum pentahydroxyacetate, etc.; the compound containing dimethylaminosulfate can be sodium dimethylaminosulfate, dimethylaminosulfate Magnesium sulfate, aluminum dimethylaminosulfate, etc.

[0016] (2): Add the stabilizer solution obtained in step 1) to 100 parts by mass of waste incineration fly ash while stirri...

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PUM

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Abstract

The invention discloses a method for treating refuse burning fly ash, which comprises steps as follows: (1) preparing a stabilizer solution from (by weight part) compounds containing pentahydroxy acetate 0.3-3, compounds containing dimethylamino sulfate 0.5-12 and water 20-50; (2) adding the stabilizer solution into 100 weight parts of refuse burning fly ash while stirring, and stirring to obtaina thick slurry; (3) adding 1-10 weight parts of compounds containing silicate into the thick slurry, and stirring to obtain a grout mixture; (4) feeding the grout mixture into an extruding machine, and extruding to obtain massive blanks; and (5) placing the blanks in a steam chamber, standing, curing, and conducting landfill disposal. The method has the advantages of low treatment cost, low volume-added ratio, and no secondary pollution; and can be widely used in treating refuse burning fly ash.

Description

technical field [0001] The invention relates to a harmless and stabilizing treatment method for hazardous waste, which belongs to the technical field of solid waste treatment, and in particular to a chemical agent stabilization treatment method for waste incineration fly ash. Background technique [0002] Waste incineration fly ash is produced in the process of municipal waste incineration. During the process of waste incineration, most of it is discharged into the atmosphere in the form of gas, part of it is left on the incineration grate in the form of slag, and a small amount is collected by the dust collector of the flue gas treatment system of the incinerator in the form of fly ash, forming a waste incineration fly Ash. Fly ash contains a variety of heavy metals and dioxins, etc. According to my country's national hazardous waste list, it belongs to hazardous waste and must be stabilized. For landfill disposal. [0003] At present, the commonly used cement curing, asp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B1/00B09B3/00
Inventor 沈恩善
Owner 沈恩善
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