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Heavy metal stabilization treatment method for heavy metal dust

A technology for stabilization treatment and heavy metals, applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of increased landfill disposal, high cement addition, and inability to stably conform, and achieves reduction of landfill disposal and reduction. Environmental impact and low cost

Active Publication Date: 2011-12-14
KURITA WATER INDUSTRIES LTD
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AI Technical Summary

Problems solved by technology

In addition, there are cases where heavy metal-containing dust that does not meet the standard value of the domestic waste landfill pollution control standard GB16889-2008 is treated as a dangerous substance and treated as a dangerous substance
[0003] In the cement solidification technology as the conventional technology, in the case of dust with high content of heavy metals such as Pb, Cd, Zn, Cu, etc., in the test according to the method of the People's Republic of China HJT300-2007 Solid waste leaching toxicity leaching method acetic acid buffer solution method , there is a problem that the standard value of the domestic waste landfill pollution control standard GB16889-2008 cannot be met stably, and even if it can be treated, the amount of cement added is very large, which leads to the problem that the amount of landfill treatment needs to be greatly increased

Method used

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  • Heavy metal stabilization treatment method for heavy metal dust
  • Heavy metal stabilization treatment method for heavy metal dust
  • Heavy metal stabilization treatment method for heavy metal dust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1: Dust GZ discharged from municipal waste incineration (user: GZ)

Embodiment 2

[0084] Example 2: Dust ZH discharged from municipal waste incineration (user: ZH)

[0085] The composition analysis results of dust GZ and dust ZH are shown in Table 1.

[0086] Table 1 Component analysis results

[0087] Analysis Project

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Abstract

The invention relates to a stabilization treatment method for heavy metal, in particular to a P-alkalinity displaying stabilization treatment method for heavy metal containing heavy metal dust. Alkaline reagents and heavy metal fixing agents are added and mixed. The invention provides a stable and long-term treatment method for heavy metal containing heavy metal dust; in a test method of an acetic acid buffer solution method according to a People's Republic of China (PRC) HJT 300-2007 solid waste leaching toxicity leaching method, a standard value of household refuse landfill pollution control standard GB16889-2008 can be stably reached, the cost is low, and the environmental load can be lightened.

Description

technical field [0001] The present invention relates to a method for making the heavy metals contained in the dust produced during incineration or burning or melting general waste or industrial waste harmless, especially according to the People's Republic of China HJT300-2007 solid waste leaching toxicity leaching method The acetic acid buffer solution method stably handles heavy metals. The harmless treatment ash can be landfilled. Background technique [0002] For heavy metal dust, it is generally used to add a certain amount of cement and water to make the heavy metal harmless through cement solidification. In addition, heavy metal-containing dust that does not meet the standard value of the domestic waste landfill pollution control standard GB16889-2008 may be treated as a dangerous substance and treated as a hazardous substance. [0003] In the cement solidification technology as the conventional technology, in the case of dust with high content of heavy metals such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/33A62D101/43A62D101/08
Inventor 水品惠一
Owner KURITA WATER INDUSTRIES LTD
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