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A sealing process for hazardous solid waste and its sealing structure

A technology for hazardous solids and wastes, which is applied in the field of the sealing process of hazardous solid wastes and their sealing structures, can solve the problems of low comprehensive utilization rate and difficult disposal of waste residues, etc. effect of function

Active Publication Date: 2022-05-06
河南华泰新材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material includes 15% to 40% of slag, 20% to 45% of steel slag, 5% to 15% of desulfurization ash, and 15% to 40% of calcium phosphate slag in terms of mass percentage. The raw materials are all from industrial waste slag, desulfurization ash and calcium phosphate The slag is difficult to handle, and the comprehensive utilization rate is low

Method used

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  • A sealing process for hazardous solid waste and its sealing structure
  • A sealing process for hazardous solid waste and its sealing structure
  • A sealing process for hazardous solid waste and its sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A sealing process for hazardous solid waste, comprising the steps of:

[0042] Step S1: providing a sealing site 1, pouring 8-10 cm foam concrete on the surface of the sealing site 1 to form a first foam concrete layer 2;

[0043] Step S2: Provide the following raw materials: hazardous solid waste, gelling material, water and foaming agent, prepare the hazardous solid waste, gelling material, water and foaming agent into slurry, and cast in-situ to obtain discontinuous The foam concrete block 3 is sealed once;

[0044] Step S3: pouring 5-10 cm of foam concrete around the foam concrete block 3 and its top to form a second foam concrete layer 4, and the first foam concrete layer 2 is connected to the second foam concrete layer 4 The foam concrete block 3 is subjected to secondary sealing.

[0045] Wherein, the first foamed concrete layer 2 and the second foamed concrete layer 4 are both cast-in-place by conventional foamed concrete, and the foamed concrete does not cont...

Embodiment 2

[0049] This embodiment provides a sealing process for hazardous solid waste, which is different from Embodiment 1 in that:

[0050] The parts by weight of the hazardous solid waste, gelling material, water and foaming agent are: 400 parts, 120 parts, 150 parts and 3 parts in sequence.

[0051] Specifically, the hazardous solid waste is red mud; the cementitious material is cement; and the foaming agent is HTW-1 vegetable protein composite foaming agent.

Embodiment 3

[0053] This embodiment provides a sealing process for hazardous solid waste, which is different from Embodiment 1 in that:

[0054] Both the first foam concrete layer 2 and the second foam concrete layer 4 are formed by cast-in-place foam concrete, and the foam concrete does not contain hazardous solid waste.

[0055] The parts by weight of the hazardous solid waste, gelling material, water and foaming agent are: 700 parts, 250 parts, 200 parts and 4 parts in sequence.

[0056] Specifically, the hazardous solid waste is red mud; the cementitious material is cement; and the foaming agent is HTW-1 vegetable protein composite foaming agent.

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Abstract

The invention provides a hazardous solid waste sealing process, which belongs to the technical field of hazardous solid waste treatment, and includes the following steps: providing a sealing site, pouring 8-10 cm foam concrete on the surface of the sealing site to form the first A foam concrete layer; provide the following raw materials: hazardous solid waste, cementitious material, water and foaming agent, prepare hazardous solid waste, cementitious material, water and foaming agent into slurry, and cast in-situ to obtain discontinuous The foam concrete block is sealed once; the foam concrete of 5-10cm is poured around the foam concrete block and its top to form the second foam concrete layer, and the first foam concrete layer is connected to the second foam concrete layer to the foam concrete block Perform secondary sealing. Using the foam concrete production process to convert hazardous solid waste into foam concrete, optimize the composition and adjust the pore structure, block the water passage to the greatest extent, and reduce the pollution of hazardous solid waste to groundwater.

Description

technical field [0001] The invention belongs to the technical field of hazardous solid waste treatment, and in particular relates to a sealing process of hazardous solid waste and a sealing structure thereof. Background technique [0002] Hazardous solid waste, also known as hazardous waste, toxic waste residue, etc., usually refers to solid waste with one or more hazardous characteristics such as toxicity, corrosiveness, flammability, reactivity, and infectivity. If this kind of waste is not treated, it will be piled up in nature for a long time, which will not only pollute the atmospheric environment, but also have a great impact on water conservancy and geology. However, due to the uncertain hazards of hazardous solid waste, it is also harmful if people come into direct contact with it during the treatment process. Therefore, how to do a good job of harmless disposal of hazardous solid waste and solve the adverse impact on the environment is particularly important. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/27C04B28/02C04B111/40
CPCC04B28/02C04B2111/00767C04B2111/40B09B3/25C04B24/14C04B18/0409C04B38/10
Inventor 张建华华振贵许言言范志广孙根生
Owner 河南华泰新材科技股份有限公司