Method for harmless treatment of incineration fly ash and composite structure made thereof

A technology of harmless treatment and treatment method, which is applied in the field of incineration fly ash treatment, can solve the problems of limited burial land, increase of treatment cost, waste of raw materials, etc., and achieve the effect of improving environmental protection, improving economic benefits, and improving economic benefits
CN102993647BInactive Publication Date: 2015-05-20柴浣兰 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
柴浣兰
Publication Date
2015-05-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for harmless treatment of incineration fly ash and a composite structure made thereof are provided. The treatment method comprises firstly sieving and drying incineration fly ash to obtain a powder fly ash component with a moisture content lower than or equal to 0.5 wt%; then adding, in the fly ash component, poly(ethylene terephthalate) plastics which have a grain diameter smaller than or equal to 1 mm and are already subjected to drying treatment, so as to obtain an admixture; and performing hot-press molding of the admixture which then is made into a composite structure wrapping the incineration fly ash. The fly ash can be tightly wrapped in the structure, by mixing the poly(ethylene terephthalate) plastics in the fly ash and performing hot-press molding to form the specific structure. In addition to reduction of the waste amount of the fly ash and the pollution of air and dust, heavy metal or toxic components in the fly ash are effectively prevented from being released, thereby satisfying the environmental protection demand and also achieving the practical values.
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Description

technical field

[0001] The invention relates to a treatment method of incineration fly ash, in particular to a harmless treatment method of incineration fly ash and a composite structure prepared therefrom. Background technique

[0002] In countries with limited land, the main treatment method of waste is incineration. The incinerated waste ash contains 5-8% of the total waste fly ash, because the fly ash contains heavy metals with high concentration and easily exceeds the domestic control standards. (Cd, Pb, Zn, Cr and Cu), may harm the environment and human body, therefore, fly ash after incineration is usually classified as hazardous waste and needs to be managed. At present, the domestic and foreign treatment of fly ash is mainly to bury the fly ash after solidification treatment with cement coating or as a paving material.

[0003] However, with the increase in the amount of waste caused by changes in consumption patterns, the amount of fly ash produced after incinerat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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