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Method for treatment of waste material

A technology of waste treatment and waste, applied in waste treatment, chemical instruments and methods, solid waste removal, etc., can solve problems such as complicated steps

Inactive Publication Date: 2002-10-02
KYOWA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its steps are relatively complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0033] Examples 1-2 100 4.0 60.0 1.64

Embodiment 1-3

[0034] Examples 1-3 100 8.0 60.0 1.04

[0035] Examples 1-4 100 12.0 60.0 0.72

[0036] Examples 1-5 100 15.0 60.0 0.68

[0037] Embodiment 1-6 100 20.0 60.0 <0.1

[0038] Embodiment 1-7 100 30.0 60.0 <0.1

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PUM

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Abstract

The present invention relates to providing a treatment method capable of stabilizing harmful metals, especially lead, in waste materials, especially fly ash. It is characterized in that adding and mixing water glass and water to waste containing harmful metals and stirring.

Description

technical field [0001] The present invention relates to a waste treatment method useful for the stabilization of waste containing harmful heavy metals such as lead, cadmium, chromium, mercury, copper, zinc and the like. Background technique [0002] At present, in order to treat wastes containing harmful metals, a method of stabilizing them by mixing these wastes with cement, stirring them with water, curing and solidifying to prevent the dissolution and precipitation of harmful metal ions is used. However, the existing treatment method of only solidifying with cement cannot stabilize all harmful metals, and it is necessary to limit the use. Rules cannot be made according to usage. [0003] For example, in order to collect hydrochloric acid gas generated by an incinerator at an incineration site, a method of injecting slaked lime or quicklime before a vacuum cleaner is used. However, since slaked lime and the like remain in the fly ash in an unreacted state, the fly ash ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/33A62D101/08A62D101/43B09B3/00B09B5/00
CPCY02W30/20B09B2101/30B09B3/20
Inventor 铃木隆文祖父江久惠
Owner KYOWA CHEM IND
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