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Innocent treatment process for industrial heavy metal waste residue by utilizing treating waste with waste

An industrial metal and harmless technology, applied in the field of environmental protection engineering and environmental chemistry, can solve the problems of poor curing effect of high permeability and high cost of materials, and achieve an effect that is conducive to environmental protection

Inactive Publication Date: 2011-06-29
湖南布鲁斯凯碳资产管理有限公司
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  • Abstract
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Problems solved by technology

However, the high permeability and high porosity of the traditional cement curing matrix have poor curing effects on some metals such as lead, arsenic, mercury, chromium, etc. At the same time, some patents on waste treatment technology have been published, and the cost of materials is high. The process should insist on achieving the purpose of governance at a lower cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0010] Embodiment: First prepare the cement solidification matrix according to the prescribed formula. The mixing ratio of solidified matrix based on waste incineration fly ash and industrial heavy metal solid waste is selected as 1.5 / 1.0. The components and proportions of the curing matrix are as follows: 60% of municipal waste incineration fly ash, 20% of aluminum-containing industrial waste slag powder, and 20% of calcium control agent lime powder.

[0011] Treat 400 kg of electroplating heavy metal nickel and chrome sludge, 360 kg of urban waste incineration fly ash, 120 kg of aluminum-containing industrial waste, and 120 kg of calcium control agent lime powder to make a cement-like solidification matrix. The solidified matrix and heavy metal sludge are mixed with appropriate amount of water, then mechanically stirred, and then made into 1000 kg (dry weight) of cement block solidified body, which is preserved at room temperature for five days and then buried in a landfill....

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Abstract

The invention relates to an innocent treatment process for industrial heavy metal waste residue by utilizing treating waste with waste. In the process provided by the invention, a novel cement curing matrix taking the urban trash firing fly ash as a main component is utilized, wherein the curing matrix comprises following the components in percentage by weight: 60-70% of the urban trash firing fly ash, 10-20% of aluminum-containing additive (aluminum-containing industrial waste residue powder) and 6-20% of calcium controlling agent (lime powder). The process provided by the invention comprises the following components: mixing the trash firing fly ash curing matrix prepared from the components with the industrial heavy metal solid waste residue or sludge to be treated together; adding a proper amount of water, and stirring uniformly; and then preparing a cement curing body; after conserving for five days at normal temperature, embedding in a landfill site. The process provided by the invention is an innocent treatment method of treating waste with waste.

Description

technical field [0001] The invention relates to a harmless treatment process for industrial heavy metal waste slag, which belongs to the technical fields of environmental protection engineering and environmental chemistry. Background technique [0002] A considerable part of the solid waste discharged from industrial processes is hazardous waste of heavy metals. The impact of these wastes on human beings was invisible at the beginning of economic development, so they were basically disposed of in the form of direct stacking or landfill in the past. With the gradual manifestation of these hidden effects, it is necessary to consider the safe treatment of these heavy metal wastes before landfill. [0003] Garbage incineration is an important means of municipal solid waste, but the incineration process will produce a large amount of fly ash and bottom ash, which will affect the ecological environment on which human beings depend. Therefore, fly ash should be safely disposed of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 孔祥勇刘晓文刘修建刘卓锫
Owner 湖南布鲁斯凯碳资产管理有限公司
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